WIP: working toward storing entity instances in a session-local cache.

.gitignore

@@ -1,8 +1,3 @@
-.gradle/
-build/
-gradle/
-gradlew
-gradlew.bat
 *.iml
 .idea
 infer-out

.idea/eclipseCodeFormatter.xml

@@ -3,6 +3,7 @@
   <component name="EclipseCodeFormatterProjectSettings">
     <option name="projectSpecificProfile">
       <ProjectSpecificProfile>
+        <option name="formatter" value="ECLIPSE" />
         <option name="pathToConfigFileJava" value="$PROJECT_DIR$/../newton/formatting/onshape-eclipse-general-preferences.epf" />
       </ProjectSpecificProfile>
     </option>

NOTES

@@ -1,202 +0,0 @@
-Operation/
-|-- AbstractStatementOperation
-|   |-- AbstractOperation
-|   |   |-- AbstractFilterOperation
-|   |   |   |-- CountOperation
-|   |   |   |-- DeleteOperation
-|   |   |   `-- UpdateOperation
-|   |   |-- BoundOperation
-|   |   `-- InsertOperation
-|   |-- AbstractOptionalOperation
-|   |   |-- AbstractFilterOptionalOperation
-|   |   |   |-- SelectFirstOperation
-|   |   |   `-- SelectFirstTransformingOperation
-|   |   `-- BoundOptionalOperation
-|   `-- AbstractStreamOperation
-|       |-- AbstractFilterStreamOperation
-    |       |   |-- SelectOperation
-|       |   `-- SelectTransformingOperation
-|       `-- BoundStreamOperation
-|-- PreparedOperation
-|-- PreparedOptionalOperation
-`-- PreparedStreamOperation
-
-
-----
-@CompoundIndex()
-create a new col in the same table called __idx_a_b_c that the hash of the concatenated values in that order is stored, create a normal index for that (CREATE INDEX ...)
-if a query matches that set of columns then use that indexed col to fetch the desired results from that table
-could also work with .in() query if materialized view exists
-----
-
-
-    // TODO(gburd): create a statement that matches one that wasn't prepared
-    //String key =
-    //    "use " + preparedStatement.getQueryKeyspace() + "; " + preparedStatement.getQueryString();
-    //for (Object param : params) {
-    //  key = key.replaceFirst(Pattern.quote("?"), param.toString());
-    //}
-
-
-
-
-primitive types have default values, (e.g. boolean, int, ...) but primative wrapper classes do not and can be null (e.g. Boolean, Integer, ...)
-
-create table wal {
-  id timeuuid,
-  follows timeuuid,
-  read <Counting Quotient Filter, Set<{keyspace, col, schema generation, timestamp}>>
-  write <Counting Quotient Filter, Set<{keyspace, col, schema generation, timestamp}>>
-  primary key (id, follows)
-}
-begin:
-  - insert into wal (timeuuid, parent timeuuid,
-
-
-
-        // NOTE: Update operations have no meaning when they only contain primary key components, so
-        // given that `properties` is ordered with the keys first if we find that the last element
-        // is either a partition key or clustering column then we know we should just skip this operation.
-        ColumnType ct = ((HelenusProperty) properties.toArray()[properties.size() - 1]).getColumnType();
-        if (ct != ColumnType.PARTITION_KEY && ct != ColumnType.CLUSTERING_COLUMN) {
-            return;
-        }
-
-
-
-	public Stream<E> sync() {
-	    ListenableFuture<Stream<E>> future = async();
-        Futures.addCallback(future, new FutureCallback<String>() {
-            @Override
-            public void onSuccess(String contents) {
-                //...process web site contents
-            }
-
-            @Override
-            public void onFailure(Throwable throwable) {
-                log.error("Exception in task", throwable);
-            }
-        });
-	}
--------
-  private mergeCache(Map<String, Set<Object>>
-
-  private static <E> Iterable<E> concat(
-          Iterable<? extends E> i1,
-          Iterable<? extends E> i2) {
-    return new Iterable<E>() {
-      public Iterator<E> iterator() {
-        return new Iterator<E>() {
-          Iterator<? extends E> listIterator = i1.iterator();
-          Boolean checkedHasNext;
-          E nextValue;
-          private boolean startTheSecond;
-
-          void theNext() {
-            if (listIterator.hasNext()) {
-              checkedHasNext = true;
-              nextValue = listIterator.next();
-            } else if (startTheSecond)
-              checkedHasNext = false;
-            else {
-              startTheSecond = true;
-              listIterator = i2.iterator();
-              theNext();
-            }
-          }
-
-          public boolean hasNext() {
-            if (checkedHasNext == null)
-              theNext();
-            return checkedHasNext;
-          }
-
-          public E next() {
-            if (!hasNext())
-              throw new NoSuchElementException();
-            checkedHasNext = null;
-            return nextValue;
-          }
-
-          public void remove() {
-            listIterator.remove();
-          }
-        };
-      }
-    };
-  }
-----------------------------------
-      if ("ttl".equals(methodName) && method.getParameterCount() == 1 && method.getReturnType() == int.class) {
-          Getter getter = (Getter) args[0];
-          if (getter == null) {
-              return false;
-          }
-          HelenusProperty prop = MappingUtil.resolveMappingProperty(getter).getProperty();
-          String getterName = prop.getPropertyName();
-          String ttlKeyForProperty = prop.getColumnName().toCql() + "_ttl";
-          if (src.containsKey(ttlKeyForProperty)) {
-              return src.get(ttlKeyForProperty);
-          } else {
-              return 0;
-          }
-      }
-
-      if ("written".equals(methodName) && method.getParameterCount() == 1 && method.getReturnType() == int.class) {
-          Getter getter = (Getter) args[0];
-          if (getter == null) {
-              return false;
-          }
-          HelenusProperty prop = MappingUtil.resolveMappingProperty(getter).getProperty();
-          String getterName = prop.getPropertyName();
-          String ttlKeyForProperty = prop.getColumnName().toCql() + "_ttl";
-          if (src.containsKey(ttlKeyForProperty)) {
-              return src.get(ttlKeyForProperty);
-          } else {
-              return 0;
-          }
-      }
-
-
-
------------------
-
-
-/*else {
-			    Cache<String, Object> cache = session.getSessionCache();
-				Map<String, Object> rowMap = this.cache.rowMap();
-				for (String rowKey : rowMap.keySet()) {
-					String keys = flattenFacets(facets);
-					for (String key : keys) {
-						Object value = cache.getIfPresent(key);
-						if (value != null) {
-							result = Optional.of(value);
-							break;
-						}
-					}
-				}
-			    cache.put
-            }
-			*/
-------------------
-
-InsertOperation
-
-
-		Class<?> iface = entity.getMappingInterface();
-		boolean includesNonIdentityValues = values.stream().map(t -> {
-					ColumnType type = t._1.getProperty().getColumnType();
-					return !((type == ColumnType.PARTITION_KEY) || (type == ColumnType.CLUSTERING_COLUMN));
-				})
-				.reduce(false, (acc, t) -> acc || t);
-		if (resultType == iface) {
-			if (values.size() > 0 && includesNonIdentityValues) {
-				boolean immutable = iface.isAssignableFrom(Drafted.class);
--------------------
-
-    final Object value;
-    if (method.getParameterCount() == 1 && args[0] instanceof Boolean && src instanceof ValueProviderMap) {
-      value = ((ValueProviderMap)src).get(methodName, (Boolean)args[0]);
-    } else {
-      value = src.get(methodName);
-    }
---------------------

README.md

@@ -1,5 +1,5 @@
 # Helenus
-Fast and easy, functional style cutting edge Java 8 Cassandra client for C* 3.x
+Fast and easy, functional style cutting edge Java 8 and Scala 2.11 Cassandra client for C* 3.x
 
 
 ### Features
@@ -9,13 +9,14 @@ Fast and easy, functional style cutting edge Java 8 Cassandra client for C* 3.x
 * Reactive asynchronous and synchronous API
 * Provides Java mapping for Tables, Tuples, UDTs (User Defined Type), Collections, UDT Collections, Tuple Collections
 * Uses lazy mapping in all cases where possible
-* Supports Java 8 Futures and Guava ListenableFuture
+* Supports Guava ListenableFuture and Scala Future
 
 ### Requirements
 
 * JVM 8
 * Datastax Driver 3.x
 * Cassandra 3.x
+* Scala 2.11+
 * Maven
 
 ### Maven
@@ -31,6 +32,27 @@ Latest release dependency:
 </dependencies>
 ```
 
+Active development dependency for Scala 2.11:
+```
+<dependencies>
+	<dependency>
+		<groupId>net.helenus</groupId>
+		<artifactId>helenus-core</artifactId>
+		<version>1.2.0_2.11-SNAPSHOT</version>
+	</dependency>
+</dependencies>
+
+<repositories>
+    <repository>
+        <id>oss-sonatype</id>
+        <name>oss-sonatype</name>
+        <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
+        <snapshots>
+            <enabled>true</enabled>
+        </snapshots>
+    </repository>
+</repositories>
+```
 
 ### Simple Example
 
@@ -110,6 +132,7 @@ public interface AbstractRepository {
 
 Account repository:
 ```
+import scala.concurrent.Future;
 
 public interface AccountRepository extends AbstractRepository {
 

bin/deploy.sh

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-
-mvn clean jar:jar javadoc:jar source:jar deploy -Prelease

bin/format.sh

@@ -1,14 +0,0 @@
-#!/usr/bin/env bash
-
-if [ "X$1" == "Xall" ]; then
-  for f in $(find ./src -name \*.java); do
-    echo Formatting $f
-    java -jar ./lib/google-java-format-1.3-all-deps.jar --replace $f
-  done
-else
-  for file in $(git status --short | awk '{print $2}'); do
-    echo $file
-    java -jar ./lib/google-java-format-1.3-all-deps.jar --replace $file
-  done
-fi
-

deploy.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+mvn clean jar:jar javadoc:jar source:jar deploy -Prelease 

helenus-core.iml

@@ -11,7 +11,10 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="Maven: com.datastax.cassandra:cassandra-driver-core:3.3.2" level="project" />
+    <orderEntry type="library" name="Maven: com.github.ben-manes.caffeine:caffeine:2.5.3" level="project" />
+    <orderEntry type="library" name="Maven: io.dropwizard.metrics:metrics-core:3.2.3" level="project" />
+    <orderEntry type="library" name="Maven: org.scala-lang:scala-library:2.13.0-M1" level="project" />
+    <orderEntry type="library" name="Maven: com.datastax.cassandra:cassandra-driver-core:3.3.0" level="project" />
     <orderEntry type="library" name="Maven: io.netty:netty-handler:4.0.47.Final" level="project" />
     <orderEntry type="library" name="Maven: io.netty:netty-buffer:4.0.47.Final" level="project" />
     <orderEntry type="library" name="Maven: io.netty:netty-common:4.0.47.Final" level="project" />
@@ -28,15 +31,14 @@
     <orderEntry type="library" name="Maven: com.github.jnr:jnr-x86asm:1.0.2" level="project" />
     <orderEntry type="library" name="Maven: com.github.jnr:jnr-posix:3.0.27" level="project" />
     <orderEntry type="library" name="Maven: com.github.jnr:jnr-constants:0.9.0" level="project" />
-    <orderEntry type="library" name="Maven: com.datastax.cassandra:cassandra-driver-extras:3.3.2" level="project" />
+    <orderEntry type="library" name="Maven: org.aspectj:aspectjrt:1.8.10" level="project" />
-    <orderEntry type="library" name="Maven: com.diffplug.durian:durian:3.4.0" level="project" />
     <orderEntry type="library" name="Maven: org.aspectj:aspectjweaver:1.8.10" level="project" />
     <orderEntry type="library" name="Maven: org.apache.commons:commons-lang3:3.6" level="project" />
     <orderEntry type="library" name="Maven: org.springframework:spring-core:4.3.10.RELEASE" level="project" />
     <orderEntry type="library" name="Maven: commons-logging:commons-logging:1.2" level="project" />
-    <orderEntry type="library" name="Maven: javax.cache:cache-api:1.1.0" level="project" />
     <orderEntry type="library" name="Maven: com.google.guava:guava:20.0" level="project" />
-    <orderEntry type="library" name="Maven: io.dropwizard.metrics:metrics-core:3.2.2" level="project" />
+    <orderEntry type="library" name="Maven: com.github.ben-manes.caffeine:caffeine:2.5.3" level="project" />
+    <orderEntry type="library" name="Maven: io.dropwizard.metrics:metrics-core:3.2.3" level="project" />
     <orderEntry type="library" name="Maven: javax.validation:validation-api:2.0.0.CR3" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.codehaus.jackson:jackson-mapper-asl:1.9.13" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: com.anthemengineering.mojo:infer-maven-plugin:0.1.0" level="project" />
@@ -112,11 +114,10 @@
     <orderEntry type="library" scope="TEST" name="Maven: org.fusesource:sigar:1.6.4" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.eclipse.jdt.core.compiler:ecj:4.4.2" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.caffinitas.ohc:ohc-core:0.4.4" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: com.github.ben-manes.caffeine:caffeine:2.2.6" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.jctools:jctools-core:1.2.1" level="project" />
-    <orderEntry type="library" scope="TEST" name="Maven: ca.exprofesso:guava-jcache:1.0.4" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: commons-io:commons-io:2.5" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: com.github.stephenc:jamm:0.2.5" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-library:1.3" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.mockito:mockito-core:2.8.47" level="project" />

pom.xml

@@ -4,8 +4,8 @@
 
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.helenus</groupId>
-    <artifactId>helenus-net-core</artifactId>
+    <artifactId>helenus-core</artifactId>
-    <version>2.1</version>
+    <version>2.0.5-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>helenus</name>
@@ -40,9 +40,6 @@
     <properties>
         <dist.id>helenus</dist.id>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <maven.compiler.target>1.8</maven.compiler.target>
-        <maven.compiler.source>1.8</maven.compiler.source>
     </properties>
 
     <repositories>
@@ -106,22 +103,22 @@
 
     <dependencies>
 
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-library</artifactId>
+            <version>2.13.0-M1</version>
+        </dependency>
+
         <dependency>
             <groupId>com.datastax.cassandra</groupId>
             <artifactId>cassandra-driver-core</artifactId>
-            <version>3.3.2</version>
+            <version>3.3.0</version>
         </dependency>
 
         <dependency>
-            <groupId>com.datastax.cassandra</groupId>
+            <groupId>org.aspectj</groupId>
-            <artifactId>cassandra-driver-extras</artifactId>
+            <artifactId>aspectjrt</artifactId>
-            <version>3.3.2</version>
+            <version>1.8.10</version>
-        </dependency>
-
-        <dependency>
-            <groupId>com.diffplug.durian</groupId>
-            <artifactId>durian</artifactId>
-            <version>3.4.0</version>
         </dependency>
 
         <dependency>
@@ -142,23 +139,25 @@
             <version>4.3.10.RELEASE</version>
         </dependency>
 
-        <dependency>
-            <groupId>javax.cache</groupId>
-            <artifactId>cache-api</artifactId>
-            <version>1.1.0</version>
-        </dependency>
-
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
             <version>20.0</version>
         </dependency>
 
+        <!-- Caching -->
+        <dependency>
+            <groupId>com.github.ben-manes.caffeine</groupId>
+            <artifactId>caffeine</artifactId>
+            <version>2.5.3</version>
+        </dependency>
+
         <!-- Metrics -->
+        <!-- https://mvnrepository.com/artifact/io.dropwizard.metrics/metrics-core -->
         <dependency>
             <groupId>io.dropwizard.metrics</groupId>
             <artifactId>metrics-core</artifactId>
-            <version>3.2.2</version>
+            <version>3.2.3</version>
         </dependency>
 
         <!-- Validation -->
@@ -211,24 +210,6 @@
             <scope>test</scope>
         </dependency>
 
-
-        <dependency>
-            <groupId>ca.exprofesso</groupId>
-            <artifactId>guava-jcache</artifactId>
-            <version>1.0.4</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.google.guava</groupId>
-                    <artifactId>guava</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>javax.cache</groupId>
-                    <artifactId>cache-api</artifactId>
-                </exclusion>
-            </exclusions>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -243,6 +224,13 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>com.github.stephenc</groupId>
+            <artifactId>jamm</artifactId>
+            <version>0.2.5</version>
+            <scope>test</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest-library</artifactId>
@@ -277,6 +265,7 @@
             <version>1.7.1</version>
             <scope>runtime</scope>
         </dependency>
+
     </dependencies>
 
     <build>

sign.sh

@@ -1,3 +1,3 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
 mvn clean jar:jar javadoc:jar source:jar install -Prelease

src/main/java/com/datastax/driver/core/DefaultMetadata.java

@@ -5,19 +5,18 @@ import java.util.List;
 
 public class DefaultMetadata extends Metadata {
 
-  public DefaultMetadata() {
+    public DefaultMetadata() { super(null); }
-    super(null);
-  }
 
-  private DefaultMetadata(Cluster.Manager cluster) {
+    private DefaultMetadata(Cluster.Manager cluster) {
-    super(cluster);
+        super(cluster);
-  }
+    }
 
-  public TupleType newTupleType(DataType... types) {
+    public TupleType newTupleType(DataType... types) {
-    return newTupleType(Arrays.asList(types));
+        return newTupleType(Arrays.asList(types));
-  }
+    }
+
+    public TupleType newTupleType(List<DataType> types) {
+        return new TupleType(types, ProtocolVersion.NEWEST_SUPPORTED, CodecRegistry.DEFAULT_INSTANCE);
+    }
 
-  public TupleType newTupleType(List<DataType> types) {
-    return new TupleType(types, ProtocolVersion.NEWEST_SUPPORTED, CodecRegistry.DEFAULT_INSTANCE);
-  }
 }

src/main/java/com/datastax/driver/core/querybuilder/IsNotNullClause.java

@@ -1,49 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package com.datastax.driver.core.querybuilder;
-
-import com.datastax.driver.core.CodecRegistry;
-import java.util.List;
-
-public class IsNotNullClause extends Clause {
-
-  final String name;
-
-  public IsNotNullClause(String name) {
-    this.name = name;
-  }
-
-  @Override
-  String name() {
-    return name;
-  }
-
-  @Override
-  Object firstValue() {
-    return null;
-  }
-
-  @Override
-  void appendTo(StringBuilder sb, List<Object> variables, CodecRegistry codecRegistry) {
-    Utils.appendName(name, sb).append(" IS NOT NULL");
-  }
-
-  @Override
-  boolean containsBindMarker() {
-    return false;
-  }
-}

src/main/java/com/datastax/driver/core/schemabuilder/CreateCustomIndex.java

@@ -1,155 +1,132 @@
 package com.datastax.driver.core.schemabuilder;
 
-import static com.datastax.driver.core.schemabuilder.SchemaStatement.*;
-
 import com.google.common.base.Optional;
 
+import static com.datastax.driver.core.schemabuilder.SchemaStatement.STATEMENT_START;
+import static com.datastax.driver.core.schemabuilder.SchemaStatement.validateNotEmpty;
+import static com.datastax.driver.core.schemabuilder.SchemaStatement.validateNotKeyWord;
+
 public class CreateCustomIndex extends CreateIndex {
 
-  private String indexName;
+    private String indexName;
-  private boolean ifNotExists = false;
+    private boolean ifNotExists = false;
-  private Optional<String> keyspaceName = Optional.absent();
+    private Optional<String> keyspaceName = Optional.absent();
-  private String tableName;
+    private String tableName;
-  private String columnName;
+    private String columnName;
-  private boolean keys;
+    private boolean keys;
 
-  CreateCustomIndex(String indexName) {
+    CreateCustomIndex(String indexName) {
-    super(indexName);
+        super(indexName);
-    validateNotEmpty(indexName, "Index name");
+        validateNotEmpty(indexName, "Index name");
-    validateNotKeyWord(
+        validateNotKeyWord(indexName, String.format("The index name '%s' is not allowed because it is a reserved keyword", indexName));
-        indexName,
+        this.indexName = indexName;
-        String.format(
-            "The index name '%s' is not allowed because it is a reserved keyword", indexName));
-    this.indexName = indexName;
-  }
-
-  /**
-   * Add the 'IF NOT EXISTS' condition to this CREATE INDEX statement.
-   *
-   * @return this CREATE INDEX statement.
-   */
-  public CreateIndex ifNotExists() {
-    this.ifNotExists = true;
-    return this;
-  }
-
-  /**
-   * Specify the keyspace and table to create the index on.
-   *
-   * @param keyspaceName the keyspace name.
-   * @param tableName the table name.
-   * @return a {@link CreateIndex.CreateIndexOn} that will allow the specification of the column.
-   */
-  public CreateIndex.CreateIndexOn onTable(String keyspaceName, String tableName) {
-    validateNotEmpty(keyspaceName, "Keyspace name");
-    validateNotEmpty(tableName, "Table name");
-    validateNotKeyWord(
-        keyspaceName,
-        String.format(
-            "The keyspace name '%s' is not allowed because it is a reserved keyword",
-            keyspaceName));
-    validateNotKeyWord(
-        tableName,
-        String.format(
-            "The table name '%s' is not allowed because it is a reserved keyword", tableName));
-    this.keyspaceName = Optional.fromNullable(keyspaceName);
-    this.tableName = tableName;
-    return new CreateCustomIndex.CreateIndexOn();
-  }
-
-  /**
-   * Specify the table to create the index on.
-   *
-   * @param tableName the table name.
-   * @return a {@link CreateIndex.CreateIndexOn} that will allow the specification of the column.
-   */
-  public CreateIndex.CreateIndexOn onTable(String tableName) {
-    validateNotEmpty(tableName, "Table name");
-    validateNotKeyWord(
-        tableName,
-        String.format(
-            "The table name '%s' is not allowed because it is a reserved keyword", tableName));
-    this.tableName = tableName;
-    return new CreateCustomIndex.CreateIndexOn();
-  }
-
-  String getCustomClassName() {
-    return "";
-  }
-
-  String getOptions() {
-    return "";
-  }
-
-  @Override
-  public String buildInternal() {
-    StringBuilder createStatement =
-        new StringBuilder(STATEMENT_START).append("CREATE CUSTOM INDEX ");
-
-    if (ifNotExists) {
-      createStatement.append("IF NOT EXISTS ");
-    }
-
-    createStatement.append(indexName).append(" ON ");
-
-    if (keyspaceName.isPresent()) {
-      createStatement.append(keyspaceName.get()).append(".");
-    }
-    createStatement.append(tableName);
-
-    createStatement.append("(");
-    if (keys) {
-      createStatement.append("KEYS(");
-    }
-
-    createStatement.append(columnName);
-
-    if (keys) {
-      createStatement.append(")");
-    }
-    createStatement.append(")");
-
-    createStatement.append(" USING '");
-    createStatement.append(getCustomClassName());
-    createStatement.append("' WITH OPTIONS = {");
-    createStatement.append(getOptions());
-    createStatement.append(" }");
-
-    return createStatement.toString();
-  }
-
-  public class CreateIndexOn extends CreateIndex.CreateIndexOn {
-    /**
-     * Specify the column to create the index on.
-     *
-     * @param columnName the column name.
-     * @return the final CREATE INDEX statement.
-     */
-    public SchemaStatement andColumn(String columnName) {
-      validateNotEmpty(columnName, "Column name");
-      validateNotKeyWord(
-          columnName,
-          String.format(
-              "The column name '%s' is not allowed because it is a reserved keyword", columnName));
-      CreateCustomIndex.this.columnName = columnName;
-      return SchemaStatement.fromQueryString(buildInternal());
     }
 
     /**
-     * Create an index on the keys of the given map column.
+     * Add the 'IF NOT EXISTS' condition to this CREATE INDEX statement.
      *
-     * @param columnName the column name.
+     * @return this CREATE INDEX statement.
-     * @return the final CREATE INDEX statement.
      */
-    public SchemaStatement andKeysOfColumn(String columnName) {
+    public CreateIndex ifNotExists() {
-      validateNotEmpty(columnName, "Column name");
+        this.ifNotExists = true;
-      validateNotKeyWord(
+        return this;
-          columnName,
+    }
-          String.format(
+
-              "The column name '%s' is not allowed because it is a reserved keyword", columnName));
+    /**
-      CreateCustomIndex.this.columnName = columnName;
+     * Specify the keyspace and table to create the index on.
-      CreateCustomIndex.this.keys = true;
+     *
-      return SchemaStatement.fromQueryString(buildInternal());
+     * @param keyspaceName the keyspace name.
+     * @param tableName    the table name.
+     * @return a {@link CreateIndex.CreateIndexOn} that will allow the specification of the column.
+     */
+    public CreateIndex.CreateIndexOn onTable(String keyspaceName, String tableName) {
+        validateNotEmpty(keyspaceName, "Keyspace name");
+        validateNotEmpty(tableName, "Table name");
+        validateNotKeyWord(keyspaceName, String.format("The keyspace name '%s' is not allowed because it is a reserved keyword", keyspaceName));
+        validateNotKeyWord(tableName, String.format("The table name '%s' is not allowed because it is a reserved keyword", tableName));
+        this.keyspaceName = Optional.fromNullable(keyspaceName);
+        this.tableName = tableName;
+        return new CreateCustomIndex.CreateIndexOn();
+    }
+
+    /**
+     * Specify the table to create the index on.
+     *
+     * @param tableName the table name.
+     * @return a {@link CreateIndex.CreateIndexOn} that will allow the specification of the column.
+     */
+    public CreateIndex.CreateIndexOn onTable(String tableName) {
+        validateNotEmpty(tableName, "Table name");
+        validateNotKeyWord(tableName, String.format("The table name '%s' is not allowed because it is a reserved keyword", tableName));
+        this.tableName = tableName;
+        return new CreateCustomIndex.CreateIndexOn();
+    }
+
+    public class CreateIndexOn extends CreateIndex.CreateIndexOn {
+        /**
+         * Specify the column to create the index on.
+         *
+         * @param columnName the column name.
+         * @return the final CREATE INDEX statement.
+         */
+        public SchemaStatement andColumn(String columnName) {
+            validateNotEmpty(columnName, "Column name");
+            validateNotKeyWord(columnName, String.format("The column name '%s' is not allowed because it is a reserved keyword", columnName));
+            CreateCustomIndex.this.columnName = columnName;
+            return SchemaStatement.fromQueryString(buildInternal());
+        }
+
+        /**
+         * Create an index on the keys of the given map column.
+         *
+         * @param columnName the column name.
+         * @return the final CREATE INDEX statement.
+         */
+        public SchemaStatement andKeysOfColumn(String columnName) {
+            validateNotEmpty(columnName, "Column name");
+            validateNotKeyWord(columnName, String.format("The column name '%s' is not allowed because it is a reserved keyword", columnName));
+            CreateCustomIndex.this.columnName = columnName;
+            CreateCustomIndex.this.keys = true;
+            return SchemaStatement.fromQueryString(buildInternal());
+        }
+    }
+
+    String getCustomClassName() { return ""; }
+    String getOptions() { return ""; }
+
+    @Override
+    public String buildInternal() {
+        StringBuilder createStatement = new StringBuilder(STATEMENT_START).append("CREATE CUSTOM INDEX ");
+
+        if (ifNotExists) {
+            createStatement.append("IF NOT EXISTS ");
+        }
+
+        createStatement.append(indexName).append(" ON ");
+
+        if (keyspaceName.isPresent()) {
+            createStatement.append(keyspaceName.get()).append(".");
+        }
+        createStatement.append(tableName);
+
+        createStatement.append("(");
+        if (keys) {
+            createStatement.append("KEYS(");
+        }
+
+        createStatement.append(columnName);
+
+        if (keys) {
+            createStatement.append(")");
+        }
+        createStatement.append(")");
+
+        createStatement.append(" USING '");
+        createStatement.append(getCustomClassName());
+        createStatement.append("' WITH OPTIONS = {");
+        createStatement.append(getOptions());
+        createStatement.append(" }");
+
+        return createStatement.toString();
     }
-  }
 }

src/main/java/com/datastax/driver/core/schemabuilder/CreateMaterializedView.java

@@ -1,57 +0,0 @@
-package com.datastax.driver.core.schemabuilder;
-
-import com.datastax.driver.core.CodecRegistry;
-import com.datastax.driver.core.querybuilder.Select;
-
-public class CreateMaterializedView extends Create {
-
-  private final String viewName;
-  private Select.Where selection;
-  private String primaryKey;
-  private String clustering;
-
-  public CreateMaterializedView(
-      String keyspaceName,
-      String viewName,
-      Select.Where selection,
-      String primaryKey,
-      String clustering) {
-    super(keyspaceName, viewName);
-    this.viewName = viewName;
-    this.selection = selection;
-    this.primaryKey = primaryKey;
-    this.clustering = clustering;
-  }
-
-  public String getQueryString(CodecRegistry codecRegistry) {
-    return buildInternal();
-  }
-
-  public String buildInternal() {
-    StringBuilder createStatement =
-        new StringBuilder(STATEMENT_START).append("CREATE MATERIALIZED VIEW");
-    if (ifNotExists) {
-      createStatement.append(" IF NOT EXISTS");
-    }
-    createStatement.append(" ");
-    if (keyspaceName.isPresent()) {
-      createStatement.append(keyspaceName.get()).append(".");
-    }
-    createStatement.append(viewName);
-    createStatement.append(" AS ");
-    createStatement.append(selection.getQueryString());
-    createStatement.setLength(createStatement.length() - 1);
-    createStatement.append(" ");
-    createStatement.append(primaryKey);
-    if (clustering != null) {
-      createStatement.append(" ").append(clustering);
-    }
-    createStatement.append(";");
-
-    return createStatement.toString();
-  }
-
-  public String toString() {
-    return buildInternal();
-  }
-}

src/main/java/com/datastax/driver/core/schemabuilder/CreateSasiIndex.java

@@ -2,17 +2,17 @@ package com.datastax.driver.core.schemabuilder;
 
 public class CreateSasiIndex extends CreateCustomIndex {
 
-  public CreateSasiIndex(String indexName) {
+    public CreateSasiIndex(String indexName) {
-    super(indexName);
+        super(indexName);
-  }
+    }
 
-  String getCustomClassName() {
+    String getCustomClassName() {
-    return "org.apache.cassandra.index.sasi.SASIIndex";
+        return "org.apache.cassandra.index.sasi.SASIIndex";
-  }
+    }
 
-  String getOptions() {
+    String getOptions() {
-    return "'analyzer_class': "
+        return "'analyzer_class': "
-        + "'org.apache.cassandra.index.sasi.analyzer.NonTokenizingAnalyzer', "
+                + "'org.apache.cassandra.index.sasi.analyzer.NonTokenizingAnalyzer', "
-        + "'case_sensitive': 'false'";
+                + "'case_sensitive': 'false'";
-  }
+    }
 }

src/main/java/com/datastax/driver/core/schemabuilder/CreateTable.java

@@ -17,22 +17,24 @@ package com.datastax.driver.core.schemabuilder;
 
 import com.datastax.driver.core.CodecRegistry;
 
-/** A built CREATE TABLE statement. */
+/**
+ * A built CREATE TABLE statement.
+ */
 public class CreateTable extends Create {
 
-  public CreateTable(String keyspaceName, String tableName) {
+    public CreateTable(String keyspaceName, String tableName) {
-    super(keyspaceName, tableName);
+        super(keyspaceName, tableName);
-  }
+    }
 
-  public CreateTable(String tableName) {
+    public CreateTable(String tableName) {
-    super(tableName);
+        super(tableName);
-  }
+    }
 
-  public String getQueryString(CodecRegistry codecRegistry) {
+    public String getQueryString(CodecRegistry codecRegistry) {
-    return buildInternal();
+        return buildInternal();
-  }
+    }
 
-  public String toString() {
+    public String toString() {
-    return buildInternal();
+        return buildInternal();
-  }
+    }
 }

src/main/java/com/datastax/driver/core/schemabuilder/DropMaterializedView.java

@@ -1,52 +0,0 @@
-package com.datastax.driver.core.schemabuilder;
-
-import com.google.common.base.Optional;
-
-public class DropMaterializedView extends Drop {
-
-  private Optional<String> keyspaceName = Optional.absent();
-  private String itemName;
-  private boolean ifExists = true;
-
-  public DropMaterializedView(String keyspaceName, String viewName) {
-    this(keyspaceName, viewName, DroppedItem.MATERIALIZED_VIEW);
-  }
-
-  private DropMaterializedView(String keyspaceName, String viewName, DroppedItem itemType) {
-    super(keyspaceName, viewName, Drop.DroppedItem.TABLE);
-    validateNotEmpty(keyspaceName, "Keyspace name");
-    this.keyspaceName = Optional.fromNullable(keyspaceName);
-    this.itemName = viewName;
-  }
-
-  /**
-   * Add the 'IF EXISTS' condition to this DROP statement.
-   *
-   * @return this statement.
-   */
-  public Drop ifExists() {
-    this.ifExists = true;
-    return this;
-  }
-
-  @Override
-  public String buildInternal() {
-    StringBuilder dropStatement = new StringBuilder("DROP MATERIALIZED VIEW ");
-    if (ifExists) {
-      dropStatement.append("IF EXISTS ");
-    }
-    if (keyspaceName.isPresent()) {
-      dropStatement.append(keyspaceName.get()).append(".");
-    }
-
-    dropStatement.append(itemName);
-    return dropStatement.toString();
-  }
-
-  enum DroppedItem {
-    TABLE,
-    TYPE,
-    INDEX,
-    MATERIALIZED_VIEW
-  }
-}

src/main/java/net/helenus/config/DefaultHelenusSettings.java

@@ -1,48 +1,49 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.config;
-package net.helenus.config;
+
-
+import java.lang.reflect.Method;
-import java.lang.reflect.Method;
+import java.util.function.Function;
-import java.util.function.Function;
+
-import net.helenus.core.DslInstantiator;
+import net.helenus.core.DslInstantiator;
-import net.helenus.core.MapperInstantiator;
+import net.helenus.core.MapperInstantiator;
-import net.helenus.core.reflect.ReflectionDslInstantiator;
+import net.helenus.core.reflect.ReflectionDslInstantiator;
-import net.helenus.core.reflect.ReflectionMapperInstantiator;
+import net.helenus.core.reflect.ReflectionMapperInstantiator;
-import net.helenus.mapping.convert.CamelCaseToUnderscoreConverter;
+import net.helenus.mapping.convert.CamelCaseToUnderscoreConverter;
-
+
-public class DefaultHelenusSettings implements HelenusSettings {
+public class DefaultHelenusSettings implements HelenusSettings {
-
+
-  @Override
+	@Override
-  public Function<String, String> getPropertyToColumnConverter() {
+	public Function<String, String> getPropertyToColumnConverter() {
-    return CamelCaseToUnderscoreConverter.INSTANCE;
+		return CamelCaseToUnderscoreConverter.INSTANCE;
-  }
+	}
-
+
-  @Override
+	@Override
-  public Function<Method, Boolean> getGetterMethodDetector() {
+	public Function<Method, Boolean> getGetterMethodDetector() {
-    return GetterMethodDetector.INSTANCE;
+		return GetterMethodDetector.INSTANCE;
-  }
+	}
-
+
-  @Override
+	@Override
-  public DslInstantiator getDslInstantiator() {
+	public DslInstantiator getDslInstantiator() {
-    return ReflectionDslInstantiator.INSTANCE;
+		return ReflectionDslInstantiator.INSTANCE;
-  }
+	}
-
+
-  @Override
+	@Override
-  public MapperInstantiator getMapperInstantiator() {
+	public MapperInstantiator getMapperInstantiator() {
-    return ReflectionMapperInstantiator.INSTANCE;
+		return ReflectionMapperInstantiator.INSTANCE;
-  }
+	}
-}
+
+}

src/main/java/net/helenus/config/GetterMethodDetector.java

@@ -1,49 +1,47 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.config;
-package net.helenus.config;
+
-
+import net.helenus.mapping.annotation.Transient;
-import java.lang.reflect.Method;
+
-import java.lang.reflect.Modifier;
+import java.lang.reflect.Method;
-import java.util.function.Function;
+import java.util.function.Function;
-import net.helenus.mapping.annotation.Transient;
+
-
+public enum GetterMethodDetector implements Function<Method, Boolean> {
-public enum GetterMethodDetector implements Function<Method, Boolean> {
+
-  INSTANCE;
+	INSTANCE;
-
+
-  @Override
+	@Override
-  public Boolean apply(Method method) {
+	public Boolean apply(Method method) {
-
+
-    if (method == null) {
+		if (method == null) {
-      throw new IllegalArgumentException("empty parameter");
+			throw new IllegalArgumentException("empty parameter");
-    }
+		}
-
+
-    if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
+		if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
-      return false;
+			return false;
-    }
+		}
-
+
-    if (Modifier.isStatic(method.getModifiers())) {
+		// Methods marked "Transient" are not mapped, skip them.
-      return false;
+		if (method.getDeclaredAnnotation(Transient.class) != null) {
-    }
+			return false;
-
+		}
-    // Methods marked "Transient" are not mapped, skip them.
+
-    if (method.getDeclaredAnnotation(Transient.class) != null) {
+		return true;
-      return false;
+
-    }
+	}
-
+
-    return true;
+}
-  }
-}

src/main/java/net/helenus/config/HelenusSettings.java

@@ -1,33 +1,34 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.config;
-package net.helenus.config;
+
-
+import java.lang.reflect.Method;
-import java.lang.reflect.Method;
+import java.util.function.Function;
-import java.util.function.Function;
+
-import net.helenus.core.DslInstantiator;
+import net.helenus.core.DslInstantiator;
-import net.helenus.core.MapperInstantiator;
+import net.helenus.core.MapperInstantiator;
-
+
-public interface HelenusSettings {
+public interface HelenusSettings {
-
+
-  Function<String, String> getPropertyToColumnConverter();
+	Function<String, String> getPropertyToColumnConverter();
-
+
-  Function<Method, Boolean> getGetterMethodDetector();
+	Function<Method, Boolean> getGetterMethodDetector();
-
+
-  DslInstantiator getDslInstantiator();
+	DslInstantiator getDslInstantiator();
-
+
-  MapperInstantiator getMapperInstantiator();
+	MapperInstantiator getMapperInstantiator();
-}
+
+}

src/main/java/net/helenus/core/AbstractAuditedEntityDraft.java

@@ -1,38 +0,0 @@
-package net.helenus.core;
-
-import java.time.LocalDateTime;
-import java.time.ZoneId;
-import java.util.Date;
-import net.helenus.core.reflect.MapExportable;
-
-public abstract class AbstractAuditedEntityDraft<E> extends AbstractEntityDraft<E> {
-
-  public AbstractAuditedEntityDraft(MapExportable entity) {
-    super(entity);
-
-    Date in = new Date();
-    LocalDateTime ldt = LocalDateTime.ofInstant(in.toInstant(), ZoneId.systemDefault());
-    Date now = Date.from(ldt.atZone(ZoneId.systemDefault()).toInstant());
-
-    String who = getCurrentAuditor();
-
-    if (entity == null) {
-      if (who != null) {
-        set("createdBy", who);
-      }
-      set("createdAt", now);
-    }
-    if (who != null) {
-      set("modifiedBy", who);
-    }
-    set("modifiedAt", now);
-  }
-
-  protected String getCurrentAuditor() {
-    return null;
-  }
-
-  public Date createdAt() {
-    return get("createdAt", Date.class);
-  }
-}

src/main/java/net/helenus/core/AbstractEntityDraft.java

@@ -1,202 +0,0 @@
-package net.helenus.core;
-
-import com.google.common.primitives.Primitives;
-import java.io.Serializable;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-import net.helenus.core.reflect.DefaultPrimitiveTypes;
-import net.helenus.core.reflect.Drafted;
-import net.helenus.core.reflect.MapExportable;
-import net.helenus.mapping.HelenusProperty;
-import net.helenus.mapping.MappingUtil;
-import org.apache.commons.lang3.SerializationUtils;
-
-public abstract class AbstractEntityDraft<E> implements Drafted<E> {
-
-  private final MapExportable entity;
-  private final Map<String, Object> valuesMap;
-  private final Set<String> readSet;
-  private final Map<String, Object> mutationsMap = new HashMap<String, Object>();
-
-  public AbstractEntityDraft(MapExportable entity) {
-    this.entity = entity;
-    // Entities can mutate their map.
-    if (entity != null) {
-      this.valuesMap = entity.toMap(true);
-      this.readSet = entity.toReadSet();
-    } else {
-      this.valuesMap = new HashMap<String, Object>();
-      this.readSet = new HashSet<String>();
-    }
-  }
-
-  public abstract Class<E> getEntityClass();
-
-  public E build() {
-    return Helenus.map(getEntityClass(), toMap());
-  }
-
-  @SuppressWarnings("unchecked")
-  public <T> T get(Getter<T> getter, Class<?> returnType) {
-    return (T) get(this.<T>methodNameFor(getter), returnType);
-  }
-
-  @SuppressWarnings("unchecked")
-  public <T> T get(String key, Class<?> returnType) {
-    readSet.add(key);
-    T value = (T) mutationsMap.get(key);
-
-    if (value == null) {
-      value = (T) valuesMap.get(key);
-      if (value == null) {
-
-        if (Primitives.allPrimitiveTypes().contains(returnType)) {
-
-          DefaultPrimitiveTypes type = DefaultPrimitiveTypes.lookup(returnType);
-          if (type == null) {
-            throw new RuntimeException("unknown primitive type " + returnType);
-          }
-
-          return (T) type.getDefaultValue();
-        }
-      } else {
-        // Collections fetched from the valuesMap
-        if (value instanceof Collection) {
-          value = (T) SerializationUtils.<Serializable>clone((Serializable) value);
-        }
-      }
-    }
-
-    return value;
-  }
-
-  public <T> Object set(Getter<T> getter, Object value) {
-    HelenusProperty prop = MappingUtil.resolveMappingProperty(getter).getProperty();
-    String key = prop.getPropertyName();
-
-    HelenusValidator.INSTANCE.validate(prop, value);
-
-    if (key == null || value == null) {
-      return null;
-    }
-
-    mutationsMap.put(key, value);
-    return value;
-  }
-
-  public Object set(String key, Object value) {
-    if (key == null || value == null) {
-      return null;
-    }
-
-    mutationsMap.put(key, value);
-    return value;
-  }
-
-  public void put(String key, Object value) {
-    mutationsMap.put(key, value);
-  }
-
-  @SuppressWarnings("unchecked")
-  public <T> T mutate(Getter<T> getter, T value) {
-    return (T) mutate(this.<T>methodNameFor(getter), value);
-  }
-
-  public <T> T mutate(String key, T value) {
-    Objects.requireNonNull(key);
-
-    if (value != null) {
-      if (entity != null) {
-        T currentValue = this.<T>fetch(key);
-        if (!value.equals(currentValue)) {
-          mutationsMap.put(key, value);
-          return value;
-        }
-      } else {
-        mutationsMap.put(key, value);
-      }
-    }
-    return null;
-  }
-
-  private <T> String methodNameFor(Getter<T> getter) {
-    return MappingUtil.resolveMappingProperty(getter).getProperty().getPropertyName();
-  }
-
-  public <T> Object unset(Getter<T> getter) {
-    return unset(methodNameFor(getter));
-  }
-
-  public Object unset(String key) {
-    if (key != null) {
-      Object value = mutationsMap.get(key);
-      mutationsMap.put(key, null);
-      return value;
-    }
-    return null;
-  }
-
-  public <T> boolean reset(Getter<T> getter, T desiredValue) {
-    return this.<T>reset(this.<T>methodNameFor(getter), desiredValue);
-  }
-
-  private <T> T fetch(String key) {
-    T value = (T) mutationsMap.get(key);
-    if (value == null) {
-      value = (T) valuesMap.get(key);
-    }
-    return value;
-  }
-
-  public <T> boolean reset(String key, T desiredValue) {
-    if (key != null && desiredValue != null) {
-      @SuppressWarnings("unchecked")
-      T currentValue = (T) this.<T>fetch(key);
-      if (currentValue == null || !currentValue.equals(desiredValue)) {
-        set(key, desiredValue);
-        return true;
-      }
-    }
-    return false;
-  }
-
-  @Override
-  public Map<String, Object> toMap() {
-    return toMap(valuesMap);
-  }
-
-  public Map<String, Object> toMap(Map<String, Object> entityMap) {
-    Map<String, Object> combined;
-    if (entityMap != null && entityMap.size() > 0) {
-      combined = new HashMap<String, Object>(entityMap.size());
-      for (Map.Entry<String, Object> e : entityMap.entrySet()) {
-        combined.put(e.getKey(), e.getValue());
-      }
-    } else {
-      combined = new HashMap<String, Object>(mutationsMap.size());
-    }
-    for (String key : mutated()) {
-      combined.put(key, mutationsMap.get(key));
-    }
-    return combined;
-  }
-
-  @Override
-  public Set<String> mutated() {
-    return mutationsMap.keySet();
-  }
-
-  @Override
-  public Set<String> read() {
-    return readSet;
-  }
-
-  @Override
-  public String toString() {
-    return mutationsMap.toString();
-  }
-}

src/main/java/net/helenus/core/AbstractSessionOperations.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,118 +15,133 @@
  */
 package net.helenus.core;
 
-import com.codahale.metrics.MetricRegistry;
-import com.datastax.driver.core.*;
-import com.google.common.base.Stopwatch;
-import com.google.common.collect.Table;
-import com.google.common.util.concurrent.ListenableFuture;
 import java.io.PrintStream;
-import java.util.List;
 import java.util.concurrent.Executor;
-import net.helenus.core.cache.Facet;
+
-import net.helenus.mapping.value.ColumnValuePreparer;
+import com.datastax.driver.core.schemabuilder.SchemaStatement;
-import net.helenus.mapping.value.ColumnValueProvider;
-import net.helenus.support.Either;
-import net.helenus.support.HelenusException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.datastax.driver.core.*;
+import com.datastax.driver.core.querybuilder.BuiltStatement;
+import com.google.common.util.concurrent.ListenableFuture;
+
+import net.helenus.mapping.value.ColumnValuePreparer;
+import net.helenus.mapping.value.ColumnValueProvider;
+import net.helenus.support.HelenusException;
+
+import javax.xml.validation.Schema;
+
 public abstract class AbstractSessionOperations {
 
-  private static final Logger LOG = LoggerFactory.getLogger(AbstractSessionOperations.class);
+	final Logger logger = LoggerFactory.getLogger(getClass());
 
-  public abstract Session currentSession();
+	abstract public Session currentSession();
 
-  public abstract String usingKeyspace();
+	abstract public String usingKeyspace();
 
-  public abstract boolean isShowCql();
+	abstract public boolean isShowCql();
 
-  public abstract boolean showValues();
+	abstract public PrintStream getPrintStream();
 
-  public abstract PrintStream getPrintStream();
+	abstract public Executor getExecutor();
 
-  public abstract Executor getExecutor();
+	abstract public SessionRepository getSessionRepository();
 
-  public abstract SessionRepository getSessionRepository();
+	abstract public ColumnValueProvider getValueProvider();
 
-  public abstract ColumnValueProvider getValueProvider();
+	abstract public ColumnValuePreparer getValuePreparer();
 
-  public abstract ColumnValuePreparer getValuePreparer();
+	public PreparedStatement prepare(RegularStatement statement) {
 
-  public abstract ConsistencyLevel getDefaultConsistencyLevel();
+		try {
 
-  public abstract boolean getDefaultQueryIdempotency();
+			log(statement, false);
 
-  public PreparedStatement prepare(RegularStatement statement) {
+			return currentSession().prepare(statement);
-    try {
-      return currentSession().prepare(statement);
-    } catch (RuntimeException e) {
-      throw translateException(e);
-    }
-  }
 
-  public ListenableFuture<PreparedStatement> prepareAsync(RegularStatement statement) {
+		} catch (RuntimeException e) {
-    try {
+			throw translateException(e);
-      return currentSession().prepareAsync(statement);
+		}
-    } catch (RuntimeException e) {
-      throw translateException(e);
-    }
-  }
 
-  public ResultSet execute(Statement statement) {
+	}
-    return execute(statement, null, null);
-  }
 
-  public ResultSet execute(Statement statement, Stopwatch timer) {
+	public ListenableFuture<PreparedStatement> prepareAsync(RegularStatement statement) {
-    return execute(statement, null, timer);
-  }
 
-  public ResultSet execute(Statement statement, UnitOfWork uow) {
+		try {
-    return execute(statement, uow, null);
-  }
 
-  public ResultSet execute(Statement statement, UnitOfWork uow, Stopwatch timer) {
+			log(statement, false);
-    return executeAsync(statement, uow, timer).getUninterruptibly();
-  }
 
-  public ResultSetFuture executeAsync(Statement statement) {
+			return currentSession().prepareAsync(statement);
-    return executeAsync(statement, null, null);
-  }
 
-  public ResultSetFuture executeAsync(Statement statement, Stopwatch timer) {
+		} catch (RuntimeException e) {
-    return executeAsync(statement, null, timer);
+			throw translateException(e);
-  }
+		}
 
-  public ResultSetFuture executeAsync(Statement statement, UnitOfWork uow) {
+	}
-    return executeAsync(statement, uow, null);
-  }
 
-  public ResultSetFuture executeAsync(Statement statement, UnitOfWork uow, Stopwatch timer) {
+	public ResultSet execute(Statement statement, boolean showValues) {
-    try {
-      return currentSession().executeAsync(statement);
-    } catch (RuntimeException e) {
-      throw translateException(e);
-    }
-  }
 
-  public MetricRegistry getMetricRegistry() {
+		return executeAsync(statement, showValues).getUninterruptibly();
-    return null;
-  }
 
-  public void mergeCache(Table<String, String, Either<Object, List<Facet>>> uowCache) {}
+	}
 
-  RuntimeException translateException(RuntimeException e) {
+	public ResultSetFuture executeAsync(Statement statement, boolean showValues) {
-    if (e instanceof HelenusException) {
-      return e;
-    }
-    throw new HelenusException(e);
-  }
 
-  public Object checkCache(String tableName, List<Facet> facets) {
+		try {
-    return null;
-  }
 
-  public void updateCache(Object pojo, List<Facet> facets) {}
+			log(statement, showValues);
+
+			return currentSession().executeAsync(statement);
+
+		} catch (RuntimeException e) {
+			throw translateException(e);
+		}
+
+	}
+
+	void log(Statement statement, boolean showValues) {
+
+		if (logger.isInfoEnabled()) {
+			logger.info("Execute statement " + statement);
+		}
+
+		if (isShowCql()) {
+
+			if (statement instanceof BuiltStatement) {
+
+                BuiltStatement builtStatement = (BuiltStatement) statement;
+
+                if (showValues) {
+                    RegularStatement regularStatement = builtStatement.setForceNoValues(true);
+                    printCql(regularStatement.getQueryString());
+                } else {
+                    printCql(builtStatement.getQueryString());
+                }
+
+			} else if (statement instanceof RegularStatement) {
+				RegularStatement regularStatement = (RegularStatement) statement;
+				printCql(regularStatement.getQueryString());
+			} else {
+				printCql(statement.toString());
+			}
+
+		}
+	}
+
+	public abstract void cache(String key, Object value);
+
+	RuntimeException translateException(RuntimeException e) {
+
+		if (e instanceof HelenusException) {
+			return e;
+		}
+
+		throw new HelenusException(e);
+	}
+
+	void printCql(String cql) {
+		getPrintStream().println(cql);
+	}
 
-  public void cacheEvict(List<Facet> facets) {}
 }

src/main/java/net/helenus/core/AutoDdl.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,8 +16,5 @@
 package net.helenus.core;
 
 public enum AutoDdl {
-  VALIDATE,
+	VALIDATE, UPDATE, CREATE, CREATE_DROP;
-  UPDATE,
-  CREATE,
-  CREATE_DROP;
 }

src/main/java/net/helenus/core/ConflictingUnitOfWorkException.java

@@ -1,27 +1,11 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-
 package net.helenus.core;
 
 public class ConflictingUnitOfWorkException extends Exception {
 
-  final UnitOfWork uow;
+	final UnitOfWork uow;
+
+	ConflictingUnitOfWorkException(UnitOfWork uow) {
+		this.uow = uow;
+	}
 
-  ConflictingUnitOfWorkException(UnitOfWork uow) {
-    this.uow = uow;
-  }
 }

src/main/java/net/helenus/core/DslInstantiator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,15 +15,13 @@
  */
 package net.helenus.core;
 
-import com.datastax.driver.core.Metadata;
 import java.util.Optional;
+
+import com.datastax.driver.core.Metadata;
 import net.helenus.core.reflect.HelenusPropertyNode;
 
 public interface DslInstantiator {
 
-  <E> E instantiate(
+	<E> E instantiate(Class<E> iface, ClassLoader classLoader, Optional<HelenusPropertyNode> parent, Metadata metadata);
-      Class<E> iface,
+
-      ClassLoader classLoader,
-      Optional<HelenusPropertyNode> parent,
-      Metadata metadata);
 }

src/main/java/net/helenus/core/Filter.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,108 +15,99 @@
  */
 package net.helenus.core;
 
-import com.datastax.driver.core.querybuilder.Clause;
 import java.util.Objects;
+
+import com.datastax.driver.core.querybuilder.Clause;
+
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.MappingUtil;
 import net.helenus.mapping.value.ColumnValuePreparer;
 
 public final class Filter<V> {
 
-  private final HelenusPropertyNode node;
+	private final HelenusPropertyNode node;
-  private final Postulate<V> postulate;
+	private final Postulate<V> postulate;
 
-  private Filter(HelenusPropertyNode node, Postulate<V> postulate) {
+	private Filter(HelenusPropertyNode node, Postulate<V> postulate) {
-    this.node = node;
+		this.node = node;
-    this.postulate = postulate;
+		this.postulate = postulate;
-  }
+	}
 
-  public static <V> Filter<V> equal(Getter<V> getter, V val) {
+	public HelenusPropertyNode getNode() {
-    return create(getter, Operator.EQ, val);
+		return node;
-  }
+	}
 
-  public static <V> Filter<V> in(Getter<V> getter, V... vals) {
+	public Clause getClause(ColumnValuePreparer valuePreparer) {
-    Objects.requireNonNull(getter, "empty getter");
+		return postulate.getClause(node, valuePreparer);
-    Objects.requireNonNull(vals, "empty values");
+	}
 
-    if (vals.length == 0) {
+	public static <V> Filter<V> equal(Getter<V> getter, V val) {
-      throw new IllegalArgumentException("values array is empty");
+		return create(getter, Operator.EQ, val);
-    }
+	}
 
-    for (int i = 0; i != vals.length; ++i) {
+	public static <V> Filter<V> in(Getter<V> getter, V... vals) {
-      Objects.requireNonNull(vals[i], "value[" + i + "] is empty");
+		Objects.requireNonNull(getter, "empty getter");
-    }
+		Objects.requireNonNull(vals, "empty values");
 
-    HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
+		if (vals.length == 0) {
+			throw new IllegalArgumentException("values array is empty");
+		}
 
-    Postulate<V> postulate = Postulate.of(Operator.IN, vals);
+		for (int i = 0; i != vals.length; ++i) {
+			Objects.requireNonNull(vals[i], "value[" + i + "] is empty");
+		}
 
-    return new Filter<V>(node, postulate);
+		HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
-  }
 
-  public static <V> Filter<V> greaterThan(Getter<V> getter, V val) {
+		Postulate<V> postulate = Postulate.of(Operator.IN, vals);
-    return create(getter, Operator.GT, val);
-  }
 
-  public static <V> Filter<V> lessThan(Getter<V> getter, V val) {
+		return new Filter<V>(node, postulate);
-    return create(getter, Operator.LT, val);
+	}
-  }
 
-  public static <V> Filter<V> greaterThanOrEqual(Getter<V> getter, V val) {
+	public static <V> Filter<V> greaterThan(Getter<V> getter, V val) {
-    return create(getter, Operator.GTE, val);
+		return create(getter, Operator.GT, val);
-  }
+	}
 
-  public static <V> Filter<V> lessThanOrEqual(Getter<V> getter, V val) {
+	public static <V> Filter<V> lessThan(Getter<V> getter, V val) {
-    return create(getter, Operator.LTE, val);
+		return create(getter, Operator.LT, val);
-  }
+	}
 
-  public static <V> Filter<V> create(Getter<V> getter, Postulate<V> postulate) {
+	public static <V> Filter<V> greaterThanOrEqual(Getter<V> getter, V val) {
-    Objects.requireNonNull(getter, "empty getter");
+		return create(getter, Operator.GTE, val);
-    Objects.requireNonNull(postulate, "empty operator");
+	}
 
-    HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
+	public static <V> Filter<V> lessThanOrEqual(Getter<V> getter, V val) {
+		return create(getter, Operator.LTE, val);
+	}
 
-    return new Filter<V>(node, postulate);
+	public static <V> Filter<V> create(Getter<V> getter, Postulate<V> postulate) {
-  }
+		Objects.requireNonNull(getter, "empty getter");
+		Objects.requireNonNull(postulate, "empty operator");
 
-  public static <V> Filter<V> create(
+		HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
-      Getter<V> getter, HelenusPropertyNode node, Postulate<V> postulate) {
-    Objects.requireNonNull(getter, "empty getter");
-    Objects.requireNonNull(postulate, "empty operator");
-    return new Filter<V>(node, postulate);
-  }
 
-  public static <V> Filter<V> create(Getter<V> getter, Operator op, V val) {
+		return new Filter<V>(node, postulate);
-    Objects.requireNonNull(getter, "empty getter");
+	}
-    Objects.requireNonNull(op, "empty op");
-    Objects.requireNonNull(val, "empty value");
 
-    if (op == Operator.IN) {
+	public static <V> Filter<V> create(Getter<V> getter, Operator op, V val) {
-      throw new IllegalArgumentException(
+		Objects.requireNonNull(getter, "empty getter");
-          "invalid usage of the 'in' operator, use Filter.in() static method");
+		Objects.requireNonNull(op, "empty op");
-    }
+		Objects.requireNonNull(val, "empty value");
 
-    HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
+		if (op == Operator.IN) {
+			throw new IllegalArgumentException("invalid usage of the 'in' operator, use Filter.in() static method");
+		}
 
-    Postulate<V> postulate = Postulate.of(op, val);
+		HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
 
-    return new Filter<V>(node, postulate);
+		Postulate<V> postulate = Postulate.of(op, val);
-  }
 
-  public HelenusPropertyNode getNode() {
+		return new Filter<V>(node, postulate);
-    return node;
+	}
-  }
 
-  public Clause getClause(ColumnValuePreparer valuePreparer) {
+	@Override
-    return postulate.getClause(node, valuePreparer);
+	public String toString() {
-  }
+		return node.getColumnName() + postulate.toString();
+	}
 
-  public V[] postulateValues() {
-    return postulate.values();
-  }
-
-  @Override
-  public String toString() {
-    return node.getColumnName() + postulate.toString();
-  }
 }

src/main/java/net/helenus/core/Getter.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -18,5 +17,6 @@ package net.helenus.core;
 
 public interface Getter<V> {
 
-  V get();
+	V get();
+
 }

src/main/java/net/helenus/core/Helenus.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,15 +15,14 @@
  */
 package net.helenus.core;
 
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
 import com.datastax.driver.core.Cluster;
 import com.datastax.driver.core.Metadata;
 import com.datastax.driver.core.Session;
-import java.util.HashSet;
+
-import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
 import net.helenus.config.DefaultHelenusSettings;
 import net.helenus.config.HelenusSettings;
 import net.helenus.core.reflect.DslExportable;
@@ -34,170 +32,156 @@ import net.helenus.support.HelenusMappingException;
 
 public final class Helenus {
 
-  private static final ConcurrentMap<Class<?>, Object> dslCache =
+    private static volatile HelenusSettings settings = new DefaultHelenusSettings();
-      new ConcurrentHashMap<Class<?>, Object>();
+    private static final ConcurrentMap<Class<?>, Object> dslCache = new ConcurrentHashMap<Class<?>, Object>();
-  private static final ConcurrentMap<Class<?>, Metadata> metadataForEntity =
+    private static final ConcurrentMap<Class<?>, Metadata> metadataForEntity = new ConcurrentHashMap<Class<?>, Metadata>();
-      new ConcurrentHashMap<Class<?>, Metadata>();
+    private static final Set<HelenusSession> sessions = new HashSet<HelenusSession>();
-  private static final Set<HelenusSession> sessions = new HashSet<HelenusSession>();
+    private static volatile HelenusSession singleton;
-  private static volatile HelenusSettings settings = new DefaultHelenusSettings();
-  private static volatile HelenusSession singleton;
 
-  private Helenus() {}
 
-  protected static void setSession(HelenusSession session) {
+    private Helenus() {
-    sessions.add(session);
+    }
-    singleton = session;
-  }
 
-  public static HelenusSession session() {
+    protected static void setSession(HelenusSession session) {
-    return singleton;
+        sessions.add(session);
-  }
+        singleton = session;
+    }
 
-  public static void shutdown() {
+    public static HelenusSession session() {
-    sessions.forEach(
+        return singleton;
-        (session) -> {
+    }
-          session.close();
+
-          sessions.remove(session);
+    public static void shutdown() {
+        sessions.forEach((session) -> {
+            session.close();
+            sessions.remove(session);
         });
-    dslCache.clear();
+        dslCache.clear();
-  }
-
-  public static HelenusSettings settings() {
-    return settings;
-  }
-
-  public static HelenusSettings settings(HelenusSettings overrideSettings) {
-    HelenusSettings old = settings;
-    settings = overrideSettings;
-    return old;
-  }
-
-  public static SessionInitializer connect(Cluster cluster) {
-    Session session = cluster.connect();
-    return new SessionInitializer(session);
-  }
-
-  public static SessionInitializer connect(Cluster cluster, String keyspace) {
-    Session session = cluster.connect(keyspace);
-    return new SessionInitializer(session);
-  }
-
-  public static SessionInitializer init(Session session, String keyspace) {
-    return new SessionInitializer(session, keyspace);
-  }
-
-  public static SessionInitializer init(Session session) {
-
-    if (session == null) {
-      throw new IllegalArgumentException("empty session");
     }
 
-    return new SessionInitializer(session);
+    public static HelenusSettings settings() {
-  }
+        return settings;
-
-  public static void clearDslCache() {
-    dslCache.clear();
-  }
-
-  public static <E> E dsl(Class<E> iface) {
-    return dsl(iface, null);
-  }
-
-  public static <E> E dsl(Class<E> iface, Metadata metadata) {
-    return dsl(iface, iface.getClassLoader(), Optional.empty(), metadata);
-  }
-
-  public static <E> E dsl(Class<E> iface, ClassLoader classLoader, Metadata metadata) {
-    return dsl(iface, classLoader, Optional.empty(), metadata);
-  }
-
-  public static <E> E dsl(
-      Class<E> iface,
-      ClassLoader classLoader,
-      Optional<HelenusPropertyNode> parent,
-      Metadata metadata) {
-
-    Object instance = null;
-
-    if (!parent.isPresent()) {
-      instance = dslCache.get(iface);
     }
 
-    if (instance == null) {
+    public static HelenusSettings settings(HelenusSettings overrideSettings) {
+        HelenusSettings old = settings;
+        settings = overrideSettings;
+        return old;
+    }
 
-      instance = settings.getDslInstantiator().instantiate(iface, classLoader, parent, metadata);
+    public static SessionInitializer connect(Cluster cluster) {
+        Session session = cluster.connect();
+        return new SessionInitializer(session);
+    }
 
-      if (!parent.isPresent()) {
+    public static SessionInitializer connect(Cluster cluster, String keyspace) {
+        Session session = cluster.connect(keyspace);
+        return new SessionInitializer(session);
+    }
 
-        Object c = dslCache.putIfAbsent(iface, instance);
+    public static SessionInitializer init(Session session) {
-        if (c != null) {
+
-          instance = c;
+        if (session == null) {
+            throw new IllegalArgumentException("empty session");
         }
-      }
+
+        return new SessionInitializer(session);
     }
 
-    return (E) instance;
+    public static void clearDslCache() {
-  }
+        dslCache.clear();
-
-  public static <E> E map(Class<E> iface, Map<String, Object> src) {
-    return map(iface, src, iface.getClassLoader());
-  }
-
-  public static <E> E map(Class<E> iface, Map<String, Object> src, ClassLoader classLoader) {
-    return settings.getMapperInstantiator().instantiate(iface, src, classLoader);
-  }
-
-  public static HelenusEntity entity(Class<?> iface) {
-    Metadata metadata = metadataForEntity.get(iface);
-    if (metadata == null) {
-      HelenusSession session = session();
-      if (session != null) {
-        metadata = session.getMetadata();
-      }
-    }
-    return entity(iface, metadata);
-  }
-
-  public static HelenusEntity entity(Class<?> iface, Metadata metadata) {
-
-    Object dsl = dsl(iface, metadata);
-
-    DslExportable e = (DslExportable) dsl;
-
-    return e.getHelenusMappingEntity();
-  }
-
-  public static HelenusEntity resolve(Object ifaceOrDsl) {
-    return resolve(ifaceOrDsl, metadataForEntity.get(ifaceOrDsl));
-  }
-
-  public static HelenusEntity resolve(Object ifaceOrDsl, Metadata metadata) {
-
-    if (ifaceOrDsl == null) {
-      throw new HelenusMappingException("ifaceOrDsl is null");
     }
 
-    if (ifaceOrDsl instanceof DslExportable) {
+    public static <E> E dsl(Class<E> iface) {
-
+        return dsl(iface, null);
-      DslExportable e = (DslExportable) ifaceOrDsl;
-
-      return e.getHelenusMappingEntity();
     }
 
-    if (ifaceOrDsl instanceof Class) {
+    public static <E> E dsl(Class<E> iface, Metadata metadata) {
-
+        return dsl(iface, iface.getClassLoader(), Optional.empty(), metadata);
-      Class<?> iface = (Class<?>) ifaceOrDsl;
-
-      if (!iface.isInterface()) {
-        throw new HelenusMappingException("class is not an interface " + iface);
-      }
-
-      if (metadata != null) {
-        metadataForEntity.putIfAbsent(iface, metadata);
-      }
-      return entity(iface, metadata);
     }
 
-    throw new HelenusMappingException("unknown dsl object or mapping interface " + ifaceOrDsl);
+    public static <E> E dsl(Class<E> iface, ClassLoader classLoader, Metadata metadata) {
-  }
+        return dsl(iface, classLoader, Optional.empty(), metadata);
+    }
+
+    public static <E> E dsl(Class<E> iface, ClassLoader classLoader, Optional<HelenusPropertyNode> parent,
+            Metadata metadata) {
+
+        Object instance = null;
+
+        if (!parent.isPresent()) {
+            instance = dslCache.get(iface);
+        }
+
+        if (instance == null) {
+
+            instance = settings.getDslInstantiator().instantiate(iface, classLoader, parent, metadata);
+
+            if (!parent.isPresent()) {
+
+                Object c = dslCache.putIfAbsent(iface, instance);
+                if (c != null) {
+                    instance = c;
+                }
+
+            }
+        }
+
+        return (E) instance;
+    }
+
+    public static <E> E map(Class<E> iface, Map<String, Object> src) {
+        return map(iface, src, iface.getClassLoader());
+    }
+
+    public static <E> E map(Class<E> iface, Map<String, Object> src, ClassLoader classLoader) {
+        return settings.getMapperInstantiator().instantiate(iface, src, classLoader);
+    }
+
+    public static HelenusEntity entity(Class<?> iface) {
+        return entity(iface, metadataForEntity.get(iface));
+    }
+
+    public static HelenusEntity entity(Class<?> iface, Metadata metadata) {
+
+        Object dsl = dsl(iface, metadata);
+
+        DslExportable e = (DslExportable) dsl;
+
+        return e.getHelenusMappingEntity();
+    }
+
+    public static HelenusEntity resolve(Object ifaceOrDsl) {
+        return resolve(ifaceOrDsl, metadataForEntity.get(ifaceOrDsl));
+    }
+
+    public static HelenusEntity resolve(Object ifaceOrDsl, Metadata metadata) {
+
+		if (ifaceOrDsl == null) {
+			throw new HelenusMappingException("ifaceOrDsl is null");
+		}
+
+		if (ifaceOrDsl instanceof DslExportable) {
+
+			DslExportable e = (DslExportable) ifaceOrDsl;
+
+			return e.getHelenusMappingEntity();
+		}
+
+		if (ifaceOrDsl instanceof Class) {
+
+			Class<?> iface = (Class<?>) ifaceOrDsl;
+
+			if (!iface.isInterface()) {
+				throw new HelenusMappingException("class is not an interface " + iface);
+			}
+
+            metadataForEntity.putIfAbsent(iface, metadata);
+			return entity(iface, metadata);
+
+		}
+
+		throw new HelenusMappingException("unknown dsl object or mapping interface " + ifaceOrDsl);
+	}
+
 }

src/main/java/net/helenus/core/HelenusValidator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,32 +16,36 @@
 package net.helenus.core;
 
 import java.lang.annotation.Annotation;
+
 import javax.validation.ConstraintValidator;
+
 import net.helenus.mapping.HelenusProperty;
 import net.helenus.support.HelenusException;
 import net.helenus.support.HelenusMappingException;
 
 public enum HelenusValidator implements PropertyValueValidator {
-  INSTANCE;
 
-  public void validate(HelenusProperty prop, Object value) {
+	INSTANCE;
 
-    for (ConstraintValidator<? extends Annotation, ?> validator : prop.getValidators()) {
+	public void validate(HelenusProperty prop, Object value) {
 
-      ConstraintValidator typeless = (ConstraintValidator) validator;
+		for (ConstraintValidator<? extends Annotation, ?> validator : prop.getValidators()) {
 
-      boolean valid = false;
+			ConstraintValidator typeless = (ConstraintValidator) validator;
 
-      try {
+			boolean valid = false;
-        valid = typeless.isValid(value, null);
+
-      } catch (ClassCastException e) {
+			try {
-        throw new HelenusMappingException(
+				valid = typeless.isValid(value, null);
-            "validator was used for wrong type '" + value + "' in " + prop, e);
+			} catch (ClassCastException e) {
-      }
+				throw new HelenusMappingException("validator was used for wrong type '" + value + "' in " + prop, e);
+			}
+
+			if (!valid) {
+				throw new HelenusException("wrong value '" + value + "' for " + prop);
+			}
+		}
+
+	}
 
-      if (!valid) {
-        throw new HelenusException("wrong value '" + value + "' for " + prop);
-      }
-    }
-  }
 }

src/main/java/net/helenus/core/MapperInstantiator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,5 +19,6 @@ import java.util.Map;
 
 public interface MapperInstantiator {
 
-  <E> E instantiate(Class<E> iface, Map<String, Object> src, ClassLoader classLoader);
+	<E> E instantiate(Class<E> iface, Map<String, Object> src, ClassLoader classLoader);
+
 }

src/main/java/net/helenus/core/Mappers.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,8 +15,10 @@
  */
 package net.helenus.core;
 
-import com.datastax.driver.core.Row;
 import java.util.function.Function;
+
+import com.datastax.driver.core.Row;
+
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.HelenusProperty;
 import net.helenus.mapping.value.ColumnValueProvider;
@@ -25,203 +26,162 @@ import net.helenus.support.Fun;
 
 public final class Mappers {
 
-  private Mappers() {}
+	private Mappers() {
+	}
 
-  public static final class Mapper1<A> implements Function<Row, Fun.Tuple1<A>> {
+	public final static class Mapper1<A> implements Function<Row, Fun.Tuple1<A>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1;
+		private final HelenusProperty p1;
 
-    public Mapper1(ColumnValueProvider provider, HelenusPropertyNode p1) {
+		public Mapper1(ColumnValueProvider provider, HelenusPropertyNode p1) {
-      this.provider = provider;
+			this.provider = provider;
-      this.p1 = p1.getProperty();
+			this.p1 = p1.getProperty();
-    }
+		}
 
-    @Override
+		@Override
-    public Fun.Tuple1<A> apply(Row row) {
+		public Fun.Tuple1<A> apply(Row row) {
-      return new Fun.Tuple1<A>(provider.getColumnValue(row, 0, p1));
+			return new Fun.Tuple1<A>(provider.getColumnValue(row, 0, p1));
-    }
+		}
-  }
+	}
 
-  public static final class Mapper2<A, B> implements Function<Row, Fun.Tuple2<A, B>> {
+	public final static class Mapper2<A, B> implements Function<Row, Fun.Tuple2<A, B>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1;
+		private final HelenusProperty p1;
-    private final HelenusProperty p2;
+		private final HelenusProperty p2;
 
-    public Mapper2(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2) {
+		public Mapper2(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2) {
-      this.provider = provider;
+			this.provider = provider;
-      this.p1 = p1.getProperty();
+			this.p1 = p1.getProperty();
-      this.p2 = p2.getProperty();
+			this.p2 = p2.getProperty();
-    }
+		}
 
-    @Override
+		@Override
-    public Fun.Tuple2<A, B> apply(Row row) {
+		public Fun.Tuple2<A, B> apply(Row row) {
-      return new Fun.Tuple2<A, B>(
+			return new Fun.Tuple2<A, B>(provider.getColumnValue(row, 0, p1), provider.getColumnValue(row, 1, p2));
-          provider.getColumnValue(row, 0, p1), provider.getColumnValue(row, 1, p2));
+		}
-    }
+	}
-  }
 
-  public static final class Mapper3<A, B, C> implements Function<Row, Fun.Tuple3<A, B, C>> {
+	public final static class Mapper3<A, B, C> implements Function<Row, Fun.Tuple3<A, B, C>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1;
+		private final HelenusProperty p1;
-    private final HelenusProperty p2;
+		private final HelenusProperty p2;
-    private final HelenusProperty p3;
+		private final HelenusProperty p3;
 
-    public Mapper3(
+		public Mapper3(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2,
-        ColumnValueProvider provider,
+				HelenusPropertyNode p3) {
-        HelenusPropertyNode p1,
+			this.provider = provider;
-        HelenusPropertyNode p2,
+			this.p1 = p1.getProperty();
-        HelenusPropertyNode p3) {
+			this.p2 = p2.getProperty();
-      this.provider = provider;
+			this.p3 = p3.getProperty();
-      this.p1 = p1.getProperty();
+		}
-      this.p2 = p2.getProperty();
-      this.p3 = p3.getProperty();
-    }
 
-    @Override
+		@Override
-    public Fun.Tuple3<A, B, C> apply(Row row) {
+		public Fun.Tuple3<A, B, C> apply(Row row) {
-      return new Fun.Tuple3<A, B, C>(
+			return new Fun.Tuple3<A, B, C>(provider.getColumnValue(row, 0, p1), provider.getColumnValue(row, 1, p2),
-          provider.getColumnValue(row, 0, p1),
+					provider.getColumnValue(row, 2, p3));
-          provider.getColumnValue(row, 1, p2),
+		}
-          provider.getColumnValue(row, 2, p3));
+	}
-    }
-  }
 
-  public static final class Mapper4<A, B, C, D> implements Function<Row, Fun.Tuple4<A, B, C, D>> {
+	public final static class Mapper4<A, B, C, D> implements Function<Row, Fun.Tuple4<A, B, C, D>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1;
+		private final HelenusProperty p1;
-    private final HelenusProperty p2;
+		private final HelenusProperty p2;
-    private final HelenusProperty p3;
+		private final HelenusProperty p3;
-    private final HelenusProperty p4;
+		private final HelenusProperty p4;
 
-    public Mapper4(
+		public Mapper4(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2,
-        ColumnValueProvider provider,
+				HelenusPropertyNode p3, HelenusPropertyNode p4) {
-        HelenusPropertyNode p1,
+			this.provider = provider;
-        HelenusPropertyNode p2,
+			this.p1 = p1.getProperty();
-        HelenusPropertyNode p3,
+			this.p2 = p2.getProperty();
-        HelenusPropertyNode p4) {
+			this.p3 = p3.getProperty();
-      this.provider = provider;
+			this.p4 = p4.getProperty();
-      this.p1 = p1.getProperty();
+		}
-      this.p2 = p2.getProperty();
-      this.p3 = p3.getProperty();
-      this.p4 = p4.getProperty();
-    }
 
-    @Override
+		@Override
-    public Fun.Tuple4<A, B, C, D> apply(Row row) {
+		public Fun.Tuple4<A, B, C, D> apply(Row row) {
-      return new Fun.Tuple4<A, B, C, D>(
+			return new Fun.Tuple4<A, B, C, D>(provider.getColumnValue(row, 0, p1), provider.getColumnValue(row, 1, p2),
-          provider.getColumnValue(row, 0, p1),
+					provider.getColumnValue(row, 2, p3), provider.getColumnValue(row, 3, p4));
-          provider.getColumnValue(row, 1, p2),
+		}
-          provider.getColumnValue(row, 2, p3),
+	}
-          provider.getColumnValue(row, 3, p4));
-    }
-  }
 
-  public static final class Mapper5<A, B, C, D, E>
+	public final static class Mapper5<A, B, C, D, E> implements Function<Row, Fun.Tuple5<A, B, C, D, E>> {
-      implements Function<Row, Fun.Tuple5<A, B, C, D, E>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1, p2, p3, p4, p5;
+		private final HelenusProperty p1, p2, p3, p4, p5;
 
-    public Mapper5(
+		public Mapper5(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2,
-        ColumnValueProvider provider,
+				HelenusPropertyNode p3, HelenusPropertyNode p4, HelenusPropertyNode p5) {
-        HelenusPropertyNode p1,
+			this.provider = provider;
-        HelenusPropertyNode p2,
+			this.p1 = p1.getProperty();
-        HelenusPropertyNode p3,
+			this.p2 = p2.getProperty();
-        HelenusPropertyNode p4,
+			this.p3 = p3.getProperty();
-        HelenusPropertyNode p5) {
+			this.p4 = p4.getProperty();
-      this.provider = provider;
+			this.p5 = p5.getProperty();
-      this.p1 = p1.getProperty();
+		}
-      this.p2 = p2.getProperty();
-      this.p3 = p3.getProperty();
-      this.p4 = p4.getProperty();
-      this.p5 = p5.getProperty();
-    }
 
-    @Override
+		@Override
-    public Fun.Tuple5<A, B, C, D, E> apply(Row row) {
+		public Fun.Tuple5<A, B, C, D, E> apply(Row row) {
-      return new Fun.Tuple5<A, B, C, D, E>(
+			return new Fun.Tuple5<A, B, C, D, E>(provider.getColumnValue(row, 0, p1),
-          provider.getColumnValue(row, 0, p1),
+					provider.getColumnValue(row, 1, p2), provider.getColumnValue(row, 2, p3),
-          provider.getColumnValue(row, 1, p2),
+					provider.getColumnValue(row, 3, p4), provider.getColumnValue(row, 4, p5));
-          provider.getColumnValue(row, 2, p3),
+		}
-          provider.getColumnValue(row, 3, p4),
+	}
-          provider.getColumnValue(row, 4, p5));
-    }
-  }
 
-  public static final class Mapper6<A, B, C, D, E, F>
+	public final static class Mapper6<A, B, C, D, E, F> implements Function<Row, Fun.Tuple6<A, B, C, D, E, F>> {
-      implements Function<Row, Fun.Tuple6<A, B, C, D, E, F>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1, p2, p3, p4, p5, p6;
+		private final HelenusProperty p1, p2, p3, p4, p5, p6;
 
-    public Mapper6(
+		public Mapper6(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2,
-        ColumnValueProvider provider,
+				HelenusPropertyNode p3, HelenusPropertyNode p4, HelenusPropertyNode p5, HelenusPropertyNode p6) {
-        HelenusPropertyNode p1,
+			this.provider = provider;
-        HelenusPropertyNode p2,
+			this.p1 = p1.getProperty();
-        HelenusPropertyNode p3,
+			this.p2 = p2.getProperty();
-        HelenusPropertyNode p4,
+			this.p3 = p3.getProperty();
-        HelenusPropertyNode p5,
+			this.p4 = p4.getProperty();
-        HelenusPropertyNode p6) {
+			this.p5 = p5.getProperty();
-      this.provider = provider;
+			this.p6 = p6.getProperty();
-      this.p1 = p1.getProperty();
+		}
-      this.p2 = p2.getProperty();
-      this.p3 = p3.getProperty();
-      this.p4 = p4.getProperty();
-      this.p5 = p5.getProperty();
-      this.p6 = p6.getProperty();
-    }
 
-    @Override
+		@Override
-    public Fun.Tuple6<A, B, C, D, E, F> apply(Row row) {
+		public Fun.Tuple6<A, B, C, D, E, F> apply(Row row) {
-      return new Fun.Tuple6<A, B, C, D, E, F>(
+			return new Fun.Tuple6<A, B, C, D, E, F>(provider.getColumnValue(row, 0, p1),
-          provider.getColumnValue(row, 0, p1),
+					provider.getColumnValue(row, 1, p2), provider.getColumnValue(row, 2, p3),
-          provider.getColumnValue(row, 1, p2),
+					provider.getColumnValue(row, 3, p4), provider.getColumnValue(row, 4, p5),
-          provider.getColumnValue(row, 2, p3),
+					provider.getColumnValue(row, 5, p6));
-          provider.getColumnValue(row, 3, p4),
+		}
-          provider.getColumnValue(row, 4, p5),
+	}
-          provider.getColumnValue(row, 5, p6));
-    }
-  }
 
-  public static final class Mapper7<A, B, C, D, E, F, G>
+	public final static class Mapper7<A, B, C, D, E, F, G> implements Function<Row, Fun.Tuple7<A, B, C, D, E, F, G>> {
-      implements Function<Row, Fun.Tuple7<A, B, C, D, E, F, G>> {
 
-    private final ColumnValueProvider provider;
+		private final ColumnValueProvider provider;
-    private final HelenusProperty p1, p2, p3, p4, p5, p6, p7;
+		private final HelenusProperty p1, p2, p3, p4, p5, p6, p7;
 
-    public Mapper7(
+		public Mapper7(ColumnValueProvider provider, HelenusPropertyNode p1, HelenusPropertyNode p2,
-        ColumnValueProvider provider,
+				HelenusPropertyNode p3, HelenusPropertyNode p4, HelenusPropertyNode p5, HelenusPropertyNode p6,
-        HelenusPropertyNode p1,
+				HelenusPropertyNode p7) {
-        HelenusPropertyNode p2,
+			this.provider = provider;
-        HelenusPropertyNode p3,
+			this.p1 = p1.getProperty();
-        HelenusPropertyNode p4,
+			this.p2 = p2.getProperty();
-        HelenusPropertyNode p5,
+			this.p3 = p3.getProperty();
-        HelenusPropertyNode p6,
+			this.p4 = p4.getProperty();
-        HelenusPropertyNode p7) {
+			this.p5 = p5.getProperty();
-      this.provider = provider;
+			this.p6 = p6.getProperty();
-      this.p1 = p1.getProperty();
+			this.p7 = p7.getProperty();
-      this.p2 = p2.getProperty();
+		}
-      this.p3 = p3.getProperty();
+
-      this.p4 = p4.getProperty();
+		@Override
-      this.p5 = p5.getProperty();
+		public Fun.Tuple7<A, B, C, D, E, F, G> apply(Row row) {
-      this.p6 = p6.getProperty();
+			return new Fun.Tuple7<A, B, C, D, E, F, G>(provider.getColumnValue(row, 0, p1),
-      this.p7 = p7.getProperty();
+					provider.getColumnValue(row, 1, p2), provider.getColumnValue(row, 2, p3),
-    }
+					provider.getColumnValue(row, 3, p4), provider.getColumnValue(row, 4, p5),
+					provider.getColumnValue(row, 5, p6), provider.getColumnValue(row, 6, p7));
+		}
+	}
 
-    @Override
-    public Fun.Tuple7<A, B, C, D, E, F, G> apply(Row row) {
-      return new Fun.Tuple7<A, B, C, D, E, F, G>(
-          provider.getColumnValue(row, 0, p1),
-          provider.getColumnValue(row, 1, p2),
-          provider.getColumnValue(row, 2, p3),
-          provider.getColumnValue(row, 3, p4),
-          provider.getColumnValue(row, 4, p5),
-          provider.getColumnValue(row, 5, p6),
-          provider.getColumnValue(row, 6, p7));
-    }
-  }
 }

src/main/java/net/helenus/core/MetricsStatsCounter.java

@@ -0,0 +1,109 @@
+/*
+ * Copyright 2016 Ben Manes. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.helenus.core;
+
+import static java.util.Objects.requireNonNull;
+
+import java.util.concurrent.TimeUnit;
+
+import com.codahale.metrics.Meter;
+import com.codahale.metrics.MetricRegistry;
+import com.codahale.metrics.Timer;
+import com.github.benmanes.caffeine.cache.stats.CacheStats;
+import com.github.benmanes.caffeine.cache.stats.StatsCounter;
+
+/**
+ * A {@link StatsCounter} instrumented with Dropwizard Metrics.
+ *
+ * @author ben.manes@gmail.com (Ben Manes)
+ */
+public final class MetricsStatsCounter implements StatsCounter {
+    private final Meter hitCount;
+    private final Meter missCount;
+    private final Meter loadSuccessCount;
+    private final Meter loadFailureCount;
+    private final Timer totalLoadTime;
+    private final Meter evictionCount;
+    private final Meter evictionWeight;
+
+    /**
+     * Constructs an instance for use by a single cache.
+     *
+     * @param registry the registry of metric instances
+     * @param metricsPrefix the prefix name for the metrics
+     */
+    public MetricsStatsCounter(MetricRegistry registry, String metricsPrefix) {
+        requireNonNull(metricsPrefix);
+        hitCount = registry.meter(metricsPrefix + ".hits");
+        missCount = registry.meter(metricsPrefix + ".misses");
+        totalLoadTime = registry.timer(metricsPrefix + ".loads");
+        loadSuccessCount = registry.meter(metricsPrefix + ".loads-success");
+        loadFailureCount = registry.meter(metricsPrefix + ".loads-failure");
+        evictionCount = registry.meter(metricsPrefix + ".evictions");
+        evictionWeight = registry.meter(metricsPrefix + ".evictions-weight");
+    }
+
+    @Override
+    public void recordHits(int count) {
+        hitCount.mark(count);
+    }
+
+    @Override
+    public void recordMisses(int count) {
+        missCount.mark(count);
+    }
+
+    @Override
+    public void recordLoadSuccess(long loadTime) {
+        loadSuccessCount.mark();
+        totalLoadTime.update(loadTime, TimeUnit.NANOSECONDS);
+    }
+
+    @Override
+    public void recordLoadFailure(long loadTime) {
+        loadFailureCount.mark();
+        totalLoadTime.update(loadTime, TimeUnit.NANOSECONDS);
+    }
+
+    @Override
+    public void recordEviction() {
+        // This method is scheduled for removal in version 3.0 in favor of recordEviction(weight)
+        recordEviction(1);
+    }
+
+    @Override
+    public void recordEviction(int weight) {
+        evictionCount.mark();
+        evictionWeight.mark(weight);
+    }
+
+    @Override
+    public CacheStats snapshot() {
+        return new CacheStats(
+                hitCount.getCount(),
+                missCount.getCount(),
+                loadSuccessCount.getCount(),
+                loadFailureCount.getCount(),
+                totalLoadTime.getCount(),
+                evictionCount.getCount(),
+                evictionWeight.getCount());
+    }
+
+    @Override
+    public String toString() {
+        return snapshot().toString();
+    }
+}

src/main/java/net/helenus/core/Operator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,37 +19,39 @@ import java.util.HashMap;
 import java.util.Map;
 
 public enum Operator {
-  EQ("=="),
 
-  IN("in"),
+	EQ("=="),
 
-  GT(">"),
+	IN("in"),
 
-  LT("<"),
+	GT(">"),
 
-  GTE(">="),
+	LT("<"),
 
-  LTE("<=");
+	GTE(">="),
 
-  private static final Map<String, Operator> indexByName = new HashMap<String, Operator>();
+	LTE("<=");
 
-  static {
+	private final String name;
-    for (Operator fo : Operator.values()) {
-      indexByName.put(fo.getName(), fo);
-    }
-  }
 
-  private final String name;
+	private final static Map<String, Operator> indexByName = new HashMap<String, Operator>();
 
-  private Operator(String name) {
+	static {
-    this.name = name;
+		for (Operator fo : Operator.values()) {
-  }
+			indexByName.put(fo.getName(), fo);
+		}
+	}
 
-  public static Operator findByOperator(String name) {
+	private Operator(String name) {
-    return indexByName.get(name);
+		this.name = name;
-  }
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public static Operator findByOperator(String name) {
+		return indexByName.get(name);
+	}
 
-  public String getName() {
-    return name;
-  }
 }

src/main/java/net/helenus/core/Ordered.java

@@ -1,8 +1,10 @@
 package net.helenus.core;
 
+import java.util.Objects;
+
 import com.datastax.driver.core.querybuilder.Ordering;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
-import java.util.Objects;
+
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.ColumnType;
 import net.helenus.mapping.MappingUtil;
@@ -11,34 +13,37 @@ import net.helenus.support.HelenusMappingException;
 
 public final class Ordered {
 
-  private final Getter<?> getter;
+	private final Getter<?> getter;
-  private final OrderingDirection direction;
+	private final OrderingDirection direction;
 
-  public Ordered(Getter<?> getter, OrderingDirection direction) {
+	public Ordered(Getter<?> getter, OrderingDirection direction) {
-    this.getter = getter;
+		this.getter = getter;
-    this.direction = direction;
+		this.direction = direction;
-  }
+	}
 
-  public Ordering getOrdering() {
+	public Ordering getOrdering() {
 
-    Objects.requireNonNull(getter, "property is null");
+		Objects.requireNonNull(getter, "property is null");
-    Objects.requireNonNull(direction, "direction is null");
+		Objects.requireNonNull(direction, "direction is null");
 
-    HelenusPropertyNode propNode = MappingUtil.resolveMappingProperty(getter);
+		HelenusPropertyNode propNode = MappingUtil.resolveMappingProperty(getter);
 
-    if (propNode.getProperty().getColumnType() != ColumnType.CLUSTERING_COLUMN) {
+		if (propNode.getProperty().getColumnType() != ColumnType.CLUSTERING_COLUMN) {
-      throw new HelenusMappingException(
+			throw new HelenusMappingException(
-          "property must be a clustering column " + propNode.getProperty().getPropertyName());
+					"property must be a clustering column " + propNode.getProperty().getPropertyName());
-    }
+		}
 
-    switch (direction) {
+		switch (direction) {
-      case ASC:
-        return QueryBuilder.asc(propNode.getColumnName());
 
-      case DESC:
+			case ASC :
-        return QueryBuilder.desc(propNode.getColumnName());
+				return QueryBuilder.asc(propNode.getColumnName());
-    }
+
+			case DESC :
+				return QueryBuilder.desc(propNode.getColumnName());
+
+		}
+
+		throw new HelenusMappingException("invalid direction " + direction);
+	}
 
-    throw new HelenusMappingException("invalid direction " + direction);
-  }
 }

src/main/java/net/helenus/core/PostCommitFunction.java

@@ -1,78 +0,0 @@
-package net.helenus.core;
-
-import java.util.List;
-import java.util.Objects;
-import java.util.function.Consumer;
-import java.util.function.Function;
-
-import net.helenus.support.CheckedRunnable;
-
-public class PostCommitFunction<T, R> implements java.util.function.Function<T, R> {
-    public static final PostCommitFunction<Void, Void>  NULL_ABORT = new PostCommitFunction<Void, Void>(null, null, null, false);
-    public static final PostCommitFunction<Void, Void> NULL_COMMIT = new PostCommitFunction<Void, Void>(null, null, null, true);
-
-  private final List<CheckedRunnable> commitThunks;
-  private final List<CheckedRunnable> abortThunks;
-  private Consumer<? super Throwable> exceptionallyThunk;
-  private boolean committed;
-
-  PostCommitFunction(List<CheckedRunnable> postCommit, List<CheckedRunnable> abortThunks,
-      Consumer<? super Throwable> exceptionallyThunk,
-      boolean committed) {
-    this.commitThunks = postCommit;
-    this.abortThunks = abortThunks;
-    this.exceptionallyThunk = exceptionallyThunk;
-    this.committed = committed;
-  }
-
-  private void apply(CheckedRunnable... fns) {
-      try {
-          for (CheckedRunnable fn : fns) {
-              fn.run();
-          }
-      } catch (Throwable t) {
-          if (exceptionallyThunk != null) {
-              exceptionallyThunk.accept(t);
-          }
-      }
-  }
-
-  public PostCommitFunction<T, R> andThen(CheckedRunnable... after) {
-    Objects.requireNonNull(after);
-    if (commitThunks == null) {
-      if (committed) {
-          apply(after);
-      }
-    } else {
-        for (CheckedRunnable fn : after) {
-            commitThunks.add(fn);
-        }
-    }
-    return this;
-  }
-
-  public PostCommitFunction<T, R> orElse(CheckedRunnable... after) {
-    Objects.requireNonNull(after);
-    if (abortThunks == null) {
-      if (!committed) {
-          apply(after);
-      }
-    } else {
-        for (CheckedRunnable fn : after) {
-            abortThunks.add(fn);
-        }
-    }
-    return this;
-  }
-
-  public PostCommitFunction<T, R> exceptionally(Consumer<? super Throwable> fn) {
-      Objects.requireNonNull(fn);
-      exceptionallyThunk = fn;
-      return this;
-  }
-
-  @Override
-  public R apply(T t) {
-    return null;
-  }
-}

src/main/java/net/helenus/core/Postulate.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -18,84 +17,86 @@ package net.helenus.core;
 
 import com.datastax.driver.core.querybuilder.Clause;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
+
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.value.ColumnValuePreparer;
 import net.helenus.support.HelenusMappingException;
 
 public final class Postulate<V> {
 
-  private final Operator operator;
+	private final Operator operator;
-  private final V[] values;
+	private final V[] values;
 
-  protected Postulate(Operator op, V[] values) {
+	protected Postulate(Operator op, V[] values) {
-    this.operator = op;
+		this.operator = op;
-    this.values = values;
+		this.values = values;
-  }
+	}
 
-  public static <V> Postulate<V> of(Operator op, V... values) {
+	public static <V> Postulate<V> of(Operator op, V... values) {
-    return new Postulate<V>(op, values);
+		return new Postulate<V>(op, values);
-  }
+	}
 
-  public Clause getClause(HelenusPropertyNode node, ColumnValuePreparer valuePreparer) {
+	public Clause getClause(HelenusPropertyNode node, ColumnValuePreparer valuePreparer) {
 
-    switch (operator) {
+		switch (operator) {
-      case EQ:
-        return QueryBuilder.eq(
-            node.getColumnName(), valuePreparer.prepareColumnValue(values[0], node.getProperty()));
 
-      case IN:
+			case EQ :
-        Object[] preparedValues = new Object[values.length];
+				return QueryBuilder.eq(node.getColumnName(),
-        for (int i = 0; i != values.length; ++i) {
+						valuePreparer.prepareColumnValue(values[0], node.getProperty()));
-          preparedValues[i] = valuePreparer.prepareColumnValue(values[i], node.getProperty());
-        }
-        return QueryBuilder.in(node.getColumnName(), preparedValues);
 
-      case LT:
+			case IN :
-        return QueryBuilder.lt(
+				Object[] preparedValues = new Object[values.length];
-            node.getColumnName(), valuePreparer.prepareColumnValue(values[0], node.getProperty()));
+				for (int i = 0; i != values.length; ++i) {
+					preparedValues[i] = valuePreparer.prepareColumnValue(values[i], node.getProperty());
+				}
+				return QueryBuilder.in(node.getColumnName(), preparedValues);
 
-      case LTE:
+			case LT :
-        return QueryBuilder.lte(
+				return QueryBuilder.lt(node.getColumnName(),
-            node.getColumnName(), valuePreparer.prepareColumnValue(values[0], node.getProperty()));
+						valuePreparer.prepareColumnValue(values[0], node.getProperty()));
 
-      case GT:
+			case LTE :
-        return QueryBuilder.gt(
+				return QueryBuilder.lte(node.getColumnName(),
-            node.getColumnName(), valuePreparer.prepareColumnValue(values[0], node.getProperty()));
+						valuePreparer.prepareColumnValue(values[0], node.getProperty()));
 
-      case GTE:
+			case GT :
-        return QueryBuilder.gte(
+				return QueryBuilder.gt(node.getColumnName(),
-            node.getColumnName(), valuePreparer.prepareColumnValue(values[0], node.getProperty()));
+						valuePreparer.prepareColumnValue(values[0], node.getProperty()));
 
-      default:
+			case GTE :
-        throw new HelenusMappingException("unknown filter operation " + operator);
+				return QueryBuilder.gte(node.getColumnName(),
-    }
+						valuePreparer.prepareColumnValue(values[0], node.getProperty()));
-  }
 
-  public V[] values() {
+			default :
-    return values;
+				throw new HelenusMappingException("unknown filter operation " + operator);
-  }
+		}
 
-  @Override
+	}
-  public String toString() {
 
-    if (operator == Operator.IN) {
+	@Override
+	public String toString() {
 
-      if (values == null) {
+		if (operator == Operator.IN) {
-        return "in()";
-      }
 
-      int len = values.length;
+			if (values == null) {
-      StringBuilder b = new StringBuilder();
+				return "in()";
-      b.append("in(");
+			}
-      for (int i = 0; i != len; i++) {
+
-        if (b.length() > 3) {
+			int len = values.length;
-          b.append(", ");
+			StringBuilder b = new StringBuilder();
-        }
+			b.append("in(");
-        b.append(String.valueOf(values[i]));
+			for (int i = 0; i != len; i++) {
-      }
+				if (b.length() > 3) {
-      return b.append(')').toString();
+					b.append(", ");
-    }
+				}
+				b.append(String.valueOf(values[i]));
+			}
+			return b.append(')').toString();
+
+		}
+
+		return operator.getName() + values[0];
+
+	}
 
-    return operator.getName() + values[0];
-  }
 }

src/main/java/net/helenus/core/PropertyValueValidator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,5 +19,6 @@ import net.helenus.mapping.HelenusProperty;
 
 public interface PropertyValueValidator {
 
-  void validate(HelenusProperty prop, Object value);
+	void validate(HelenusProperty prop, Object value);
+
 }

src/main/java/net/helenus/core/Query.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,80 +15,90 @@
  */
 package net.helenus.core;
 
-import com.datastax.driver.core.querybuilder.BindMarker;
-import com.datastax.driver.core.querybuilder.QueryBuilder;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+
+import com.datastax.driver.core.querybuilder.BindMarker;
+import com.datastax.driver.core.querybuilder.QueryBuilder;
+
 import net.helenus.mapping.OrderingDirection;
 
-/** Sugar methods for the queries */
+/**
+ * Sugar methods for the queries
+ *
+ */
+
 public final class Query {
 
-  private Query() {}
+	private Query() {
+	}
 
-  public static BindMarker marker() {
+	public static BindMarker marker() {
-    return QueryBuilder.bindMarker();
+		return QueryBuilder.bindMarker();
-  }
+	}
 
-  public static BindMarker marker(String name) {
+	public static BindMarker marker(String name) {
-    return QueryBuilder.bindMarker(name);
+		return QueryBuilder.bindMarker(name);
-  }
+	}
 
-  public static Ordered asc(Getter<?> getter) {
+	public static Ordered asc(Getter<?> getter) {
-    return new Ordered(getter, OrderingDirection.ASC);
+		return new Ordered(getter, OrderingDirection.ASC);
-  }
+	}
 
-  public static Ordered desc(Getter<?> getter) {
+	public static Ordered desc(Getter<?> getter) {
-    return new Ordered(getter, OrderingDirection.DESC);
+		return new Ordered(getter, OrderingDirection.DESC);
-  }
+	}
 
-  public static <V> Postulate<V> eq(V val) {
+	public static <V> Postulate<V> eq(V val) {
-    return Postulate.of(Operator.EQ, val);
+		return Postulate.of(Operator.EQ, val);
-  }
+	}
 
-  public static <V> Postulate<V> lt(V val) {
+	public static <V> Postulate<V> lt(V val) {
-    return Postulate.of(Operator.LT, val);
+		return Postulate.of(Operator.LT, val);
-  }
+	}
 
-  public static <V> Postulate<V> lte(V val) {
+	public static <V> Postulate<V> lte(V val) {
-    return Postulate.of(Operator.LTE, val);
+		return Postulate.of(Operator.LTE, val);
-  }
+	}
 
-  public static <V> Postulate<V> gt(V val) {
+	public static <V> Postulate<V> gt(V val) {
-    return Postulate.of(Operator.GT, val);
+		return Postulate.of(Operator.GT, val);
-  }
+	}
 
-  public static <V> Postulate<V> gte(V val) {
+	public static <V> Postulate<V> gte(V val) {
-    return Postulate.of(Operator.GTE, val);
+		return Postulate.of(Operator.GTE, val);
-  }
+	}
 
-  public static <V> Postulate<V> in(V[] vals) {
+	public static <V> Postulate<V> in(V[] vals) {
-    return new Postulate<V>(Operator.IN, vals);
+		return new Postulate<V>(Operator.IN, vals);
-  }
+	}
 
-  public static <K, V> Getter<V> getIdx(Getter<List<V>> listGetter, int index) {
+	public static <K, V> Getter<V> getIdx(Getter<List<V>> listGetter, int index) {
-    Objects.requireNonNull(listGetter, "listGetter is null");
+		Objects.requireNonNull(listGetter, "listGetter is null");
 
-    return new Getter<V>() {
+		return new Getter<V>() {
 
-      @Override
+			@Override
-      public V get() {
+			public V get() {
-        return listGetter.get().get(index);
+				return listGetter.get().get(index);
-      }
+			}
-    };
-  }
 
-  public static <K, V> Getter<V> get(Getter<Map<K, V>> mapGetter, K k) {
+		};
-    Objects.requireNonNull(mapGetter, "mapGetter is null");
+	}
-    Objects.requireNonNull(k, "key is null");
 
-    return new Getter<V>() {
+	public static <K, V> Getter<V> get(Getter<Map<K, V>> mapGetter, K k) {
+		Objects.requireNonNull(mapGetter, "mapGetter is null");
+		Objects.requireNonNull(k, "key is null");
+
+		return new Getter<V>() {
+
+			@Override
+			public V get() {
+				return mapGetter.get().get(k);
+			}
+
+		};
+	}
 
-      @Override
-      public V get() {
-        return mapGetter.get().get(k);
-      }
-    };
-  }
 }

src/main/java/net/helenus/core/SchemaUtil.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,459 +15,351 @@
  */
 package net.helenus.core;
 
-import com.datastax.driver.core.*;
-import com.datastax.driver.core.querybuilder.IsNotNullClause;
-import com.datastax.driver.core.querybuilder.QueryBuilder;
-import com.datastax.driver.core.querybuilder.Select;
-import com.datastax.driver.core.schemabuilder.*;
-import com.datastax.driver.core.schemabuilder.Create.Options;
 import java.util.*;
 import java.util.stream.Collectors;
-import net.helenus.core.reflect.HelenusPropertyNode;
+
+import com.datastax.driver.core.*;
+import com.datastax.driver.core.IndexMetadata;
+import com.datastax.driver.core.schemabuilder.*;
+import com.datastax.driver.core.schemabuilder.Create.Options;
+
 import net.helenus.mapping.*;
 import net.helenus.mapping.ColumnType;
-import net.helenus.mapping.annotation.ClusteringColumn;
 import net.helenus.mapping.type.OptionalColumnMetadata;
 import net.helenus.support.CqlUtil;
 import net.helenus.support.HelenusMappingException;
 
 public final class SchemaUtil {
 
-  private SchemaUtil() {}
+	private SchemaUtil() {
+	}
 
-  public static RegularStatement use(String keyspace, boolean forceQuote) {
+	public static RegularStatement use(String keyspace, boolean forceQuote) {
-    if (forceQuote) {
+		if (forceQuote) {
-      return new SimpleStatement("USE" + CqlUtil.forceQuote(keyspace));
+			return new SimpleStatement("USE" + CqlUtil.forceQuote(keyspace));
-    } else {
+		} else {
-      return new SimpleStatement("USE " + keyspace);
+			return new SimpleStatement("USE " + keyspace);
-    }
+		}
-  }
+	}
 
-  public static SchemaStatement createUserType(HelenusEntity entity) {
+	public static SchemaStatement createUserType(HelenusEntity entity) {
 
-    if (entity.getType() != HelenusEntityType.UDT) {
+		if (entity.getType() != HelenusEntityType.UDT) {
-      throw new HelenusMappingException("expected UDT entity " + entity);
+			throw new HelenusMappingException("expected UDT entity " + entity);
-    }
+		}
 
-    CreateType create = SchemaBuilder.createType(entity.getName().toCql());
+		CreateType create = SchemaBuilder.createType(entity.getName().toCql());
 
-    for (HelenusProperty prop : entity.getOrderedProperties()) {
+		for (HelenusProperty prop : entity.getOrderedProperties()) {
 
-      ColumnType columnType = prop.getColumnType();
+			ColumnType columnType = prop.getColumnType();
 
-      if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
+			if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
-        throw new HelenusMappingException(
+				throw new HelenusMappingException("primary key columns are not supported in UserDefinedType for "
-            "primary key columns are not supported in UserDefinedType for "
+						+ prop.getPropertyName() + " in entity " + entity);
-                + prop.getPropertyName()
+			}
-                + " in entity "
-                + entity);
-      }
 
-      try {
+			try {
-        prop.getDataType().addColumn(create, prop.getColumnName());
+				prop.getDataType().addColumn(create, prop.getColumnName());
-      } catch (IllegalArgumentException e) {
+			} catch (IllegalArgumentException e) {
-        throw new HelenusMappingException(
+				throw new HelenusMappingException("invalid column name '" + prop.getColumnName() + "' in entity '"
-            "invalid column name '"
+						+ entity.getName().getName() + "'", e);
-                + prop.getColumnName()
+			}
-                + "' in entity '"
+		}
-                + entity.getName().getName()
-                + "'",
-            e);
-      }
-    }
 
-    return create;
+		return create;
-  }
+	}
 
-  public static List<SchemaStatement> alterUserType(
+	public static List<SchemaStatement> alterUserType(UserType userType, HelenusEntity entity,
-      UserType userType, HelenusEntity entity, boolean dropUnusedColumns) {
+			boolean dropUnusedColumns) {
 
-    if (entity.getType() != HelenusEntityType.UDT) {
+		if (entity.getType() != HelenusEntityType.UDT) {
-      throw new HelenusMappingException("expected UDT entity " + entity);
+			throw new HelenusMappingException("expected UDT entity " + entity);
-    }
+		}
 
-    List<SchemaStatement> result = new ArrayList<SchemaStatement>();
+		List<SchemaStatement> result = new ArrayList<SchemaStatement>();
 
-    /**
+		/**
-     * TODO: In future replace SchemaBuilder.alterTable by SchemaBuilder.alterType when it will
+		 * TODO: In future replace SchemaBuilder.alterTable by SchemaBuilder.alterType
-     * exist
+		 * when it will exist
-     */
+		 */
-    Alter alter = SchemaBuilder.alterTable(entity.getName().toCql());
 
-    final Set<String> visitedColumns =
+		Alter alter = SchemaBuilder.alterTable(entity.getName().toCql());
-        dropUnusedColumns ? new HashSet<String>() : Collections.<String>emptySet();
 
-    for (HelenusProperty prop : entity.getOrderedProperties()) {
+		final Set<String> visitedColumns = dropUnusedColumns ? new HashSet<String>() : Collections.<String>emptySet();
 
-      String columnName = prop.getColumnName().getName();
+		for (HelenusProperty prop : entity.getOrderedProperties()) {
 
-      if (dropUnusedColumns) {
+			String columnName = prop.getColumnName().getName();
-        visitedColumns.add(columnName);
-      }
 
-      ColumnType columnType = prop.getColumnType();
+			if (dropUnusedColumns) {
+				visitedColumns.add(columnName);
+			}
 
-      if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
+			ColumnType columnType = prop.getColumnType();
-        continue;
-      }
 
-      DataType dataType = userType.getFieldType(columnName);
+			if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
-      SchemaStatement stmt =
+				continue;
-          prop.getDataType()
+			}
-              .alterColumn(alter, prop.getColumnName(), optional(columnName, dataType));
 
-      if (stmt != null) {
+			DataType dataType = userType.getFieldType(columnName);
-        result.add(stmt);
+			SchemaStatement stmt = prop.getDataType().alterColumn(alter, prop.getColumnName(),
-      }
+					optional(columnName, dataType));
-    }
 
-    if (dropUnusedColumns) {
+			if (stmt != null) {
-      for (String field : userType.getFieldNames()) {
+				result.add(stmt);
-        if (!visitedColumns.contains(field)) {
+			}
 
-          result.add(alter.dropColumn(field));
+		}
-        }
-      }
-    }
 
-    return result;
+		if (dropUnusedColumns) {
-  }
+			for (String field : userType.getFieldNames()) {
+				if (!visitedColumns.contains(field)) {
 
-  public static SchemaStatement dropUserType(HelenusEntity entity) {
+					result.add(alter.dropColumn(field));
 
-    if (entity.getType() != HelenusEntityType.UDT) {
+				}
-      throw new HelenusMappingException("expected UDT entity " + entity);
+			}
-    }
+		}
 
-    return SchemaBuilder.dropType(entity.getName().toCql()).ifExists();
+		return result;
-  }
 
-  public static SchemaStatement dropUserType(UserType type) {
+	}
 
-    return SchemaBuilder.dropType(type.getTypeName()).ifExists();
+    public static SchemaStatement dropUserType(HelenusEntity entity) {
-  }
 
-  public static String createPrimaryKeyPhrase(Collection<HelenusProperty> properties) {
+        if (entity.getType() != HelenusEntityType.UDT) {
-    List<String> p = new ArrayList<String>(properties.size());
+            throw new HelenusMappingException("expected UDT entity " + entity);
-    List<String> c = new ArrayList<String>(properties.size());
-
-    for (HelenusProperty prop : properties) {
-      String columnName = prop.getColumnName().toCql();
-      switch (prop.getColumnType()) {
-        case PARTITION_KEY:
-          p.add(columnName);
-          break;
-        case CLUSTERING_COLUMN:
-          c.add(columnName);
-          break;
-        default:
-          break;
-      }
-    }
-
-    if (p.size() == 0 && c.size() == 0)
-      return "{"
-          + properties
-              .stream()
-              .map(HelenusProperty::getPropertyName)
-              .collect(Collectors.joining(", "))
-          + "}";
-
-    return "("
-        + ((p.size() > 1) ? "(" + String.join(", ", p) + ")" : p.get(0))
-        + ((c.size() > 0)
-            ? ", " + ((c.size() > 1) ? "(" + String.join(", ", c) + ")" : c.get(0))
-            : "")
-        + ")";
-  }
-
-  public static SchemaStatement createMaterializedView(
-      String keyspace, String viewName, HelenusEntity entity) {
-    if (entity.getType() != HelenusEntityType.VIEW) {
-      throw new HelenusMappingException("expected view entity " + entity);
-    }
-
-    List<HelenusPropertyNode> props = new ArrayList<HelenusPropertyNode>();
-    entity
-        .getOrderedProperties()
-        .stream()
-        .map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .forEach(p -> props.add(p));
-
-    Select.Selection selection = QueryBuilder.select();
-
-    for (HelenusPropertyNode prop : props) {
-      String columnName = prop.getColumnName();
-      selection = selection.column(columnName);
-    }
-    Class<?> iface = entity.getMappingInterface();
-    String tableName = Helenus.entity(iface.getInterfaces()[0]).getName().toCql();
-    Select.Where where = selection.from(tableName).where();
-    List<String> o = new ArrayList<String>(props.size());
-
-    for (HelenusPropertyNode prop : props) {
-      String columnName = prop.getColumnName();
-      switch (prop.getProperty().getColumnType()) {
-        case PARTITION_KEY:
-          where = where.and(new IsNotNullClause(columnName));
-          break;
-
-        case CLUSTERING_COLUMN:
-          where = where.and(new IsNotNullClause(columnName));
-
-          ClusteringColumn clusteringColumn =
-              prop.getProperty().getGetterMethod().getAnnotation(ClusteringColumn.class);
-          if (clusteringColumn != null && clusteringColumn.ordering() != null) {
-            o.add(columnName + " " + clusteringColumn.ordering().cql());
-          }
-          break;
-        default:
-          break;
-      }
-    }
-
-    String primaryKey = "PRIMARY KEY " + createPrimaryKeyPhrase(entity.getOrderedProperties());
-
-    String clustering = "";
-    if (o.size() > 0) {
-      clustering = "WITH CLUSTERING ORDER BY (" + String.join(", ", o) + ")";
-    }
-    return new CreateMaterializedView(keyspace, viewName, where, primaryKey, clustering)
-        .ifNotExists();
-  }
-
-  public static SchemaStatement dropMaterializedView(
-      String keyspace, String viewName, HelenusEntity entity) {
-    return new DropMaterializedView(keyspace, viewName);
-  }
-
-  public static SchemaStatement createTable(HelenusEntity entity) {
-
-    if (entity.getType() != HelenusEntityType.TABLE) {
-      throw new HelenusMappingException("expected table entity " + entity);
-    }
-
-    // NOTE: There is a bug in the normal path of createTable where the
-    // "cache" is set too early and never unset preventing more than
-    // one column on a table.
-    // SchemaBuilder.createTable(entity.getName().toCql());
-    CreateTable create = new CreateTable(entity.getName().toCql());
-
-    create.ifNotExists();
-
-    List<HelenusProperty> clusteringColumns = new ArrayList<HelenusProperty>();
-
-    for (HelenusProperty prop : entity.getOrderedProperties()) {
-
-      ColumnType columnType = prop.getColumnType();
-
-      if (columnType == ColumnType.CLUSTERING_COLUMN) {
-        clusteringColumns.add(prop);
-      }
-
-      prop.getDataType().addColumn(create, prop.getColumnName());
-    }
-
-    if (!clusteringColumns.isEmpty()) {
-      Options options = create.withOptions();
-      clusteringColumns.forEach(
-          p -> options.clusteringOrder(p.getColumnName().toCql(), mapDirection(p.getOrdering())));
-    }
-
-    return create;
-  }
-
-  public static List<SchemaStatement> alterTable(
-      TableMetadata tmd, HelenusEntity entity, boolean dropUnusedColumns) {
-
-    if (entity.getType() != HelenusEntityType.TABLE) {
-      throw new HelenusMappingException("expected table entity " + entity);
-    }
-
-    List<SchemaStatement> result = new ArrayList<SchemaStatement>();
-
-    Alter alter = SchemaBuilder.alterTable(entity.getName().toCql());
-
-    final Set<String> visitedColumns =
-        dropUnusedColumns ? new HashSet<String>() : Collections.<String>emptySet();
-
-    for (HelenusProperty prop : entity.getOrderedProperties()) {
-
-      String columnName = prop.getColumnName().getName();
-
-      if (dropUnusedColumns) {
-        visitedColumns.add(columnName);
-      }
-
-      ColumnType columnType = prop.getColumnType();
-
-      if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
-        continue;
-      }
-
-      ColumnMetadata columnMetadata = tmd.getColumn(columnName);
-      SchemaStatement stmt =
-          prop.getDataType().alterColumn(alter, prop.getColumnName(), optional(columnMetadata));
-
-      if (stmt != null) {
-        result.add(stmt);
-      }
-    }
-
-    if (dropUnusedColumns) {
-      for (ColumnMetadata cm : tmd.getColumns()) {
-        if (!visitedColumns.contains(cm.getName())) {
-
-          result.add(alter.dropColumn(cm.getName()));
-        }
-      }
-    }
-
-    return result;
-  }
-
-  public static SchemaStatement dropTable(HelenusEntity entity) {
-
-    if (entity.getType() != HelenusEntityType.TABLE) {
-      throw new HelenusMappingException("expected table entity " + entity);
-    }
-
-    return SchemaBuilder.dropTable(entity.getName().toCql()).ifExists();
-  }
-
-  public static SchemaStatement createIndex(HelenusProperty prop) {
-    if (prop.caseSensitiveIndex()) {
-      return SchemaBuilder.createIndex(indexName(prop))
-          .ifNotExists()
-          .onTable(prop.getEntity().getName().toCql())
-          .andColumn(prop.getColumnName().toCql());
-    } else {
-      return new CreateSasiIndex(prop.getIndexName().get().toCql())
-          .ifNotExists()
-          .onTable(prop.getEntity().getName().toCql())
-          .andColumn(prop.getColumnName().toCql());
-    }
-  }
-
-  public static List<SchemaStatement> createIndexes(HelenusEntity entity) {
-
-    return entity
-        .getOrderedProperties()
-        .stream()
-        .filter(p -> p.getIndexName().isPresent())
-        .map(p -> SchemaUtil.createIndex(p))
-        .collect(Collectors.toList());
-  }
-
-  public static List<SchemaStatement> alterIndexes(
-      TableMetadata tmd, HelenusEntity entity, boolean dropUnusedIndexes) {
-
-    List<SchemaStatement> list = new ArrayList<SchemaStatement>();
-
-    final Set<String> visitedColumns =
-        dropUnusedIndexes ? new HashSet<String>() : Collections.<String>emptySet();
-
-    entity
-        .getOrderedProperties()
-        .stream()
-        .filter(p -> p.getIndexName().isPresent())
-        .forEach(
-            p -> {
-              String columnName = p.getColumnName().getName();
-
-              if (dropUnusedIndexes) {
-                visitedColumns.add(columnName);
-              }
-
-              ColumnMetadata cm = tmd.getColumn(columnName);
-
-              if (cm != null) {
-                IndexMetadata im = tmd.getIndex(columnName);
-                if (im == null) {
-                  list.add(createIndex(p));
-                }
-              } else {
-                list.add(createIndex(p));
-              }
-            });
-
-    if (dropUnusedIndexes) {
-
-      tmd.getColumns()
-          .stream()
-          .filter(c -> tmd.getIndex(c.getName()) != null && !visitedColumns.contains(c.getName()))
-          .forEach(
-              c -> {
-                list.add(SchemaBuilder.dropIndex(tmd.getIndex(c.getName()).getName()).ifExists());
-              });
-    }
-
-    return list;
-  }
-
-  public static SchemaStatement dropIndex(HelenusProperty prop) {
-    return SchemaBuilder.dropIndex(indexName(prop)).ifExists();
-  }
-
-  private static SchemaBuilder.Direction mapDirection(OrderingDirection o) {
-    switch (o) {
-      case ASC:
-        return SchemaBuilder.Direction.ASC;
-      case DESC:
-        return SchemaBuilder.Direction.DESC;
-    }
-    throw new HelenusMappingException("unknown ordering " + o);
-  }
-
-  public static void throwNoMapping(HelenusProperty prop) {
-
-    throw new HelenusMappingException(
-        "only primitive types and Set,List,Map collections and UserDefinedTypes are allowed, unknown type for property '"
-            + prop.getPropertyName()
-            + "' type is '"
-            + prop.getJavaType()
-            + "' in the entity "
-            + prop.getEntity());
-  }
-
-  private static OptionalColumnMetadata optional(final ColumnMetadata columnMetadata) {
-    if (columnMetadata != null) {
-      return new OptionalColumnMetadata() {
-
-        @Override
-        public String getName() {
-          return columnMetadata.getName();
         }
 
-        @Override
+        return SchemaBuilder.dropType(entity.getName().toCql()).ifExists();
-        public DataType getType() {
+
-          return columnMetadata.getType();
-        }
-      };
     }
-    return null;
-  }
 
-  private static OptionalColumnMetadata optional(final String name, final DataType dataType) {
+    public static SchemaStatement dropUserType(UserType type) {
-    if (dataType != null) {
-      return new OptionalColumnMetadata() {
 
-        @Override
+        return SchemaBuilder.dropType(type.getTypeName()).ifExists();
-        public String getName() {
+	}
-          return name;
+
+	public static SchemaStatement createTable(HelenusEntity entity) {
+
+		if (entity.getType() != HelenusEntityType.TABLE) {
+			throw new HelenusMappingException("expected table entity " + entity);
+		}
+
+        // NOTE: There is a bug in the normal path of createTable where the
+        // "cache" is set too early and never unset preventing more than
+        // one column on a table.
+        // SchemaBuilder.createTable(entity.getName().toCql());
+		CreateTable create = new CreateTable(entity.getName().toCql());
+
+		create.ifNotExists();
+
+		List<HelenusProperty> clusteringColumns = new ArrayList<HelenusProperty>();
+
+		for (HelenusProperty prop : entity.getOrderedProperties()) {
+
+			ColumnType columnType = prop.getColumnType();
+
+			if (columnType == ColumnType.CLUSTERING_COLUMN) {
+				clusteringColumns.add(prop);
+			}
+
+			prop.getDataType().addColumn(create, prop.getColumnName());
+
+		}
+
+		if (!clusteringColumns.isEmpty()) {
+			Options options = create.withOptions();
+			clusteringColumns
+					.forEach(p -> options.clusteringOrder(p.getColumnName().toCql(), mapDirection(p.getOrdering())));
+		}
+
+		return create;
+
+	}
+
+	public static List<SchemaStatement> alterTable(TableMetadata tmd, HelenusEntity entity, boolean dropUnusedColumns) {
+
+		if (entity.getType() != HelenusEntityType.TABLE) {
+			throw new HelenusMappingException("expected table entity " + entity);
+		}
+
+		List<SchemaStatement> result = new ArrayList<SchemaStatement>();
+
+		Alter alter = SchemaBuilder.alterTable(entity.getName().toCql());
+
+		final Set<String> visitedColumns = dropUnusedColumns ? new HashSet<String>() : Collections.<String>emptySet();
+
+		for (HelenusProperty prop : entity.getOrderedProperties()) {
+
+			String columnName = prop.getColumnName().getName();
+
+			if (dropUnusedColumns) {
+				visitedColumns.add(columnName);
+			}
+
+			ColumnType columnType = prop.getColumnType();
+
+			if (columnType == ColumnType.PARTITION_KEY || columnType == ColumnType.CLUSTERING_COLUMN) {
+				continue;
+			}
+
+			ColumnMetadata columnMetadata = tmd.getColumn(columnName);
+			SchemaStatement stmt = prop.getDataType().alterColumn(alter, prop.getColumnName(),
+					optional(columnMetadata));
+
+			if (stmt != null) {
+				result.add(stmt);
+			}
+
+		}
+
+		if (dropUnusedColumns) {
+			for (ColumnMetadata cm : tmd.getColumns()) {
+				if (!visitedColumns.contains(cm.getName())) {
+
+					result.add(alter.dropColumn(cm.getName()));
+
+				}
+			}
+		}
+
+		return result;
+	}
+
+	public static SchemaStatement dropTable(HelenusEntity entity) {
+
+		if (entity.getType() != HelenusEntityType.TABLE) {
+			throw new HelenusMappingException("expected table entity " + entity);
+		}
+
+		return SchemaBuilder.dropTable(entity.getName().toCql()).ifExists();
+
+	}
+
+	public static SchemaStatement createIndex(HelenusProperty prop) {
+        if (prop.caseSensitiveIndex()) {
+            return SchemaBuilder.createIndex(prop.getIndexName().get().toCql())
+                    .ifNotExists()
+                    .onTable(prop.getEntity().getName().toCql())
+                    .andColumn(prop.getColumnName().toCql());
+        } else {
+            return new CreateSasiIndex(prop.getIndexName().get().toCql())
+                    .ifNotExists()
+                    .onTable(prop.getEntity().getName().toCql())
+                    .andColumn(prop.getColumnName().toCql());
         }
+	}
 
-        @Override
+	public static List<SchemaStatement> createIndexes(HelenusEntity entity) {
-        public DataType getType() {
-          return dataType;
-        }
-      };
-    }
-    return null;
-  }
 
-  private static String indexName(HelenusProperty prop) {
+		return entity.getOrderedProperties().stream().filter(p -> p.getIndexName().isPresent())
-      return prop.getEntity().getName().toCql() + "_" + prop.getIndexName().get().toCql();
+				.map(p -> SchemaUtil.createIndex(p)).collect(Collectors.toList());
-  }
+
+	}
+
+	public static List<SchemaStatement> alterIndexes(TableMetadata tmd, HelenusEntity entity,
+			boolean dropUnusedIndexes) {
+
+		List<SchemaStatement> list = new ArrayList<SchemaStatement>();
+
+		final Set<String> visitedColumns = dropUnusedIndexes ? new HashSet<String>() : Collections.<String>emptySet();
+
+		entity.getOrderedProperties().stream().filter(p -> p.getIndexName().isPresent()).forEach(p -> {
+
+			String columnName = p.getColumnName().getName();
+
+			if (dropUnusedIndexes) {
+				visitedColumns.add(columnName);
+			}
+
+			ColumnMetadata cm = tmd.getColumn(columnName);
+
+			if (cm != null) {
+				IndexMetadata im = tmd.getIndex(columnName);
+				if (im == null) {
+					list.add(createIndex(p));
+				}
+			} else {
+				list.add(createIndex(p));
+			}
+
+		});
+
+		if (dropUnusedIndexes) {
+
+			tmd.getColumns().stream().filter(c -> tmd.getIndex(c.getName()) != null && !visitedColumns.contains(c.getName()))
+					.forEach(c -> {
+						list.add(SchemaBuilder.dropIndex(tmd.getIndex(c.getName()).getName()).ifExists());
+
+					});
+
+		}
+
+		return list;
+
+	}
+
+	public static SchemaStatement dropIndex(HelenusProperty prop) {
+		return SchemaBuilder.dropIndex(prop.getIndexName().get().toCql()).ifExists();
+	}
+
+	private static SchemaBuilder.Direction mapDirection(OrderingDirection o) {
+		switch (o) {
+			case ASC :
+				return SchemaBuilder.Direction.ASC;
+			case DESC :
+				return SchemaBuilder.Direction.DESC;
+		}
+		throw new HelenusMappingException("unknown ordering " + o);
+	}
+
+	public static void throwNoMapping(HelenusProperty prop) {
+
+		throw new HelenusMappingException(
+				"only primitive types and Set,List,Map collections and UserDefinedTypes are allowed, unknown type for property '"
+						+ prop.getPropertyName() + "' type is '" + prop.getJavaType() + "' in the entity "
+						+ prop.getEntity());
+
+	}
+
+	private static OptionalColumnMetadata optional(final ColumnMetadata columnMetadata) {
+		if (columnMetadata != null) {
+			return new OptionalColumnMetadata() {
+
+				@Override
+				public String getName() {
+					return columnMetadata.getName();
+				}
+
+				@Override
+				public DataType getType() {
+					return columnMetadata.getType();
+				}
+
+			};
+		}
+		return null;
+	}
+
+	private static OptionalColumnMetadata optional(final String name, final DataType dataType) {
+		if (dataType != null) {
+			return new OptionalColumnMetadata() {
+
+				@Override
+				public String getName() {
+					return name;
+				}
+
+				@Override
+				public DataType getType() {
+					return dataType;
+				}
+
+			};
+		}
+		return null;
+	}
 
 }

src/main/java/net/helenus/core/SessionInitializer.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -19,447 +18,325 @@ package net.helenus.core;
 import com.codahale.metrics.MetricRegistry;
 import com.datastax.driver.core.*;
 import com.google.common.util.concurrent.MoreExecutors;
+import net.helenus.mapping.HelenusEntity;
+import net.helenus.mapping.HelenusEntityType;
+import net.helenus.mapping.value.ColumnValuePreparer;
+import net.helenus.mapping.value.ColumnValueProvider;
+import net.helenus.support.HelenusException;
+import net.helenus.support.PackageUtil;
+
 import java.io.IOException;
 import java.io.PrintStream;
 import java.util.*;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 import java.util.function.Consumer;
-import javax.cache.CacheManager;
-import net.helenus.core.reflect.DslExportable;
-import net.helenus.mapping.HelenusEntity;
-import net.helenus.mapping.HelenusEntityType;
-import net.helenus.mapping.MappingUtil;
-import net.helenus.mapping.value.ColumnValuePreparer;
-import net.helenus.mapping.value.ColumnValueProvider;
-import net.helenus.support.Either;
-import net.helenus.support.HelenusException;
-import net.helenus.support.PackageUtil;
 
 public final class SessionInitializer extends AbstractSessionOperations {
 
-  private final Session session;
+	private final Session session;
-  private final List<Either<Object, Class<?>>> initList = new ArrayList<Either<Object, Class<?>>>();
+	private CodecRegistry registry;
-  private CodecRegistry registry;
+	private MetricRegistry metricRegistry;
-  private String usingKeyspace;
+	private String usingKeyspace;
-  private boolean showCql = false;
+	private boolean showCql = false;
-  private boolean showValues = true;
+	private PrintStream printStream = System.out;
-  private ConsistencyLevel consistencyLevel;
+	private Executor executor = MoreExecutors.directExecutor();
-  private boolean idempotent = false;
-  private MetricRegistry metricRegistry = new MetricRegistry();
-  private PrintStream printStream = System.out;
-  private Executor executor = MoreExecutors.directExecutor();
-  private SessionRepositoryBuilder sessionRepository;
-  private boolean dropUnusedColumns = false;
-  private boolean dropUnusedIndexes = false;
-  private KeyspaceMetadata keyspaceMetadata;
-  private AutoDdl autoDdl = AutoDdl.UPDATE;
-  private CacheManager cacheManager = null;
 
-  SessionInitializer(Session session, String keyspace) {
+	private SessionRepositoryBuilder sessionRepository;
-    this.session = session;
+
-    this.usingKeyspace = keyspace;
+	private boolean dropUnusedColumns = false;
-    if (session != null) {
+	private boolean dropUnusedIndexes = false;
-      this.sessionRepository = new SessionRepositoryBuilder(session);
+
+	private KeyspaceMetadata keyspaceMetadata;
+
+	private final List<Object> initList = new ArrayList<Object>();
+	private AutoDdl autoDdl = AutoDdl.UPDATE;
+
+	SessionInitializer(Session session) {
+		this.session = Objects.requireNonNull(session, "empty session");
+		this.usingKeyspace = session.getLoggedKeyspace(); // can be null
+		this.sessionRepository = new SessionRepositoryBuilder(session);
+	}
+
+	@Override
+	public void cache(String key, Object value) { }
+
+	@Override
+	public Session currentSession() {
+		return session;
+	}
+
+	@Override
+	public String usingKeyspace() {
+		return usingKeyspace;
+	}
+
+	@Override
+	public Executor getExecutor() {
+		return executor;
+	}
+
+	@Override
+	public SessionRepository getSessionRepository() {
+		throw new HelenusException("not expected to call");
+	}
+
+	@Override
+	public ColumnValueProvider getValueProvider() {
+		throw new HelenusException("not expected to call");
+	}
+
+	@Override
+	public ColumnValuePreparer getValuePreparer() {
+		throw new HelenusException("not expected to call");
+	}
+
+	public SessionInitializer showCql() {
+		this.showCql = true;
+		return this;
+	}
+
+	public SessionInitializer showCql(boolean enabled) {
+		this.showCql = enabled;
+		return this;
+	}
+
+	@Override
+	public PrintStream getPrintStream() {
+		return printStream;
+	}
+
+	public SessionInitializer printTo(PrintStream out) {
+		this.printStream = out;
+		return this;
+	}
+
+	public SessionInitializer withExecutor(Executor executor) {
+		Objects.requireNonNull(executor, "empty executor");
+		this.executor = executor;
+		return this;
+	}
+
+	public SessionInitializer withMetricsRegistry(MetricRegistry metricRegistry) {
+        Objects.requireNonNull(metricRegistry, "empty registry");
+        this.metricRegistry = metricRegistry;
+        return this;
     }
-  }
 
-  SessionInitializer(Session session) {
+	public SessionInitializer withCachingExecutor() {
-    this.session = Objects.requireNonNull(session, "empty session");
+		this.executor = Executors.newCachedThreadPool();
-    this.usingKeyspace = session.getLoggedKeyspace(); // can be null
+		return this;
-    this.sessionRepository = new SessionRepositoryBuilder(session);
+	}
-  }
 
-  @Override
+	public SessionInitializer dropUnusedColumns(boolean enabled) {
-  public Session currentSession() {
+		this.dropUnusedColumns = enabled;
-    return session;
+		return this;
-  }
+	}
 
-  @Override
+	public SessionInitializer dropUnusedIndexes(boolean enabled) {
-  public String usingKeyspace() {
+		this.dropUnusedIndexes = enabled;
-    return usingKeyspace;
+		return this;
-  }
+	}
 
-  @Override
+    public SessionInitializer withCodecRegistry(CodecRegistry registry) {
-  public Executor getExecutor() {
+	    this.registry = registry;
-    return executor;
+        return this;
-  }
-
-  @Override
-  public SessionRepository getSessionRepository() {
-    throw new HelenusException("not expected to call");
-  }
-
-  @Override
-  public ColumnValueProvider getValueProvider() {
-    throw new HelenusException("not expected to call");
-  }
-
-  @Override
-  public ColumnValuePreparer getValuePreparer() {
-    throw new HelenusException("not expected to call");
-  }
-
-  public SessionInitializer showCql() {
-    this.showCql = true;
-    return this;
-  }
-
-  public SessionInitializer showCql(boolean enabled) {
-    this.showCql = enabled;
-    return this;
-  }
-
-  public SessionInitializer showQueryValuesInLog(boolean showValues) {
-    this.showValues = showValues;
-    return this;
-  }
-
-  public SessionInitializer showQueryValuesInLog() {
-    this.showValues = true;
-    return this;
-  }
-
-  public boolean showValues() {
-    return showValues;
-  }
-
-  public SessionInitializer metricRegistry(MetricRegistry metricRegistry) {
-    this.metricRegistry = metricRegistry;
-    return this;
-  }
-
-  public SessionInitializer consistencyLevel(ConsistencyLevel consistencyLevel) {
-    this.consistencyLevel = consistencyLevel;
-    return this;
-  }
-
-  public SessionInitializer setCacheManager(CacheManager cacheManager) {
-    this.cacheManager = cacheManager;
-    return this;
-  }
-
-  public ConsistencyLevel getDefaultConsistencyLevel() {
-    return consistencyLevel;
-  }
-
-  public SessionInitializer setOperationsIdempotentByDefault() {
-    this.idempotent = true;
-    return this;
-  }
-
-  public SessionInitializer idempotentQueryExecution(boolean idempotent) {
-    this.idempotent = idempotent;
-    return this;
-  }
-
-  public boolean getDefaultQueryIdempotency() {
-    return idempotent;
-  }
-
-  @Override
-  public PrintStream getPrintStream() {
-    return printStream;
-  }
-
-  public SessionInitializer printTo(PrintStream out) {
-    this.printStream = out;
-    return this;
-  }
-
-  public SessionInitializer withExecutor(Executor executor) {
-    Objects.requireNonNull(executor, "empty executor");
-    this.executor = executor;
-    return this;
-  }
-
-  public SessionInitializer withCachingExecutor() {
-    this.executor = Executors.newCachedThreadPool();
-    return this;
-  }
-
-  public SessionInitializer dropUnusedColumns(boolean enabled) {
-    this.dropUnusedColumns = enabled;
-    return this;
-  }
-
-  public SessionInitializer dropUnusedIndexes(boolean enabled) {
-    this.dropUnusedIndexes = enabled;
-    return this;
-  }
-
-  public SessionInitializer withCodecRegistry(CodecRegistry registry) {
-    this.registry = registry;
-    return this;
-  }
-
-  @Override
-  public boolean isShowCql() {
-    return showCql;
-  }
-
-  public SessionInitializer addPackage(String packageName) {
-    try {
-      PackageUtil.getClasses(packageName)
-          .stream()
-          .filter(c -> c.isInterface() && !c.isAnnotation())
-          .forEach(
-              clazz -> {
-                initList.add(Either.right(clazz));
-              });
-    } catch (IOException | ClassNotFoundException e) {
-      throw new HelenusException("fail to add package " + packageName, e);
     }
-    return this;
-  }
 
-  public SessionInitializer add(Object... dsls) {
+    @Override
-    Objects.requireNonNull(dsls, "dsls is empty");
+	public boolean isShowCql() {
-    int len = dsls.length;
+		return showCql;
-    for (int i = 0; i != len; ++i) {
+	}
-      Object obj = Objects.requireNonNull(dsls[i], "element " + i + " is empty");
-      initList.add(Either.left(obj));
-    }
-    return this;
-  }
 
-  public SessionInitializer autoValidate() {
+	public SessionInitializer addPackage(String packageName) {
-    this.autoDdl = AutoDdl.VALIDATE;
+		try {
-    return this;
+			PackageUtil.getClasses(packageName).stream().filter(c -> c.isInterface() && !c.isAnnotation())
-  }
+					.forEach(initList::add);
+		} catch (IOException | ClassNotFoundException e) {
+			throw new HelenusException("fail to add package " + packageName, e);
+        }
+		return this;
+	}
 
-  public SessionInitializer autoUpdate() {
+	public SessionInitializer add(Object... dsls) {
-    this.autoDdl = AutoDdl.UPDATE;
+		Objects.requireNonNull(dsls, "dsls is empty");
-    return this;
+		int len = dsls.length;
-  }
+		for (int i = 0; i != len; ++i) {
+			Object obj = Objects.requireNonNull(dsls[i], "element " + i + " is empty");
+			initList.add(obj);
+		}
+		return this;
+	}
 
-  public SessionInitializer autoCreate() {
+	public SessionInitializer autoValidate() {
-    this.autoDdl = AutoDdl.CREATE;
+		this.autoDdl = AutoDdl.VALIDATE;
-    return this;
+		return this;
-  }
+	}
 
-  public SessionInitializer autoCreateDrop() {
+	public SessionInitializer autoUpdate() {
-    this.autoDdl = AutoDdl.CREATE_DROP;
+		this.autoDdl = AutoDdl.UPDATE;
-    return this;
+		return this;
-  }
+	}
 
-  public SessionInitializer auto(AutoDdl autoDdl) {
+	public SessionInitializer autoCreate() {
-    this.autoDdl = autoDdl;
+		this.autoDdl = AutoDdl.CREATE;
-    return this;
+		return this;
-  }
+	}
 
-  public SessionInitializer use(String keyspace) {
+	public SessionInitializer autoCreateDrop() {
-    if (session != null) {
+		this.autoDdl = AutoDdl.CREATE_DROP;
-      session.execute(SchemaUtil.use(keyspace, false));
+		return this;
-      this.usingKeyspace = keyspace;
+	}
-    }
-    return this;
-  }
 
-  public SessionInitializer use(String keyspace, boolean forceQuote) {
+	public SessionInitializer auto(AutoDdl autoDdl) {
-    session.execute(SchemaUtil.use(keyspace, forceQuote));
+		this.autoDdl = autoDdl;
-    this.usingKeyspace = keyspace;
+		return this;
-    return this;
+	}
-  }
 
-  public void singleton() {
+	public SessionInitializer use(String keyspace) {
-    Helenus.setSession(get());
+		session.execute(SchemaUtil.use(keyspace, false));
-  }
+		this.usingKeyspace = keyspace;
+		return this;
+	}
 
-  public synchronized HelenusSession get() {
+	public SessionInitializer use(String keyspace, boolean forceQuote) {
-    initialize();
+		session.execute(SchemaUtil.use(keyspace, forceQuote));
-    return new HelenusSession(
+		this.usingKeyspace = keyspace;
-        session,
+		return this;
-        usingKeyspace,
+	}
-        registry,
-        showCql,
-        showValues,
-        printStream,
-        sessionRepository,
-        executor,
-        autoDdl == AutoDdl.CREATE_DROP,
-        consistencyLevel,
-        idempotent,
-        cacheManager,
-        metricRegistry);
-  }
 
-  private void initialize() {
+	public void singleton() {
 
-    Objects.requireNonNull(usingKeyspace, "please define keyspace by 'use' operator");
+		Helenus.setSession(get());
+	}
 
-    initList.forEach(
+	public synchronized HelenusSession get() {
-        (either) -> {
+		initialize();
-          Class<?> iface = null;
+		return new HelenusSession(session, usingKeyspace, registry, showCql, printStream, sessionRepository, executor,
-          if (either.isLeft()) {
+				autoDdl == AutoDdl.CREATE_DROP, metricRegistry);
-            iface = MappingUtil.getMappingInterface(either.getLeft());
+	}
-          } else {
-            iface = either.getRight();
-          }
 
-          DslExportable dsl = (DslExportable) Helenus.dsl(iface);
+	private void initialize() {
-          if (session != null) {
+
-            dsl.setCassandraMetadataForHelenusSession(session.getCluster().getMetadata());
+		Objects.requireNonNull(usingKeyspace, "please define keyspace by 'use' operator");
-          }
+
-          if (sessionRepository != null) {
+		initList.forEach(dsl -> sessionRepository.add(dsl));
-            sessionRepository.add(dsl);
+
-          }
+		TableOperations tableOps = new TableOperations(this, dropUnusedColumns, dropUnusedIndexes);
+		UserTypeOperations userTypeOps = new UserTypeOperations(this, dropUnusedColumns);
+
+		switch (autoDdl) {
+
+			case CREATE_DROP :
+
+			    // Drop tables first, otherwise a `DROP TYPE ...` will fail as the type is still referenced
+                // by a table.
+                sessionRepository.entities().stream().filter(e -> e.getType() == HelenusEntityType.TABLE)
+                        .forEach(e -> tableOps.dropTable(e));
+
+                eachUserTypeInReverseOrder(userTypeOps, e -> userTypeOps.dropUserType(e));
+
+                // FALLTHRU to CREATE case (read: the absence of a `break;` statement here is intentional!)
+			case CREATE :
+
+                eachUserTypeInOrder(userTypeOps, e -> userTypeOps.createUserType(e));
+
+                sessionRepository.entities().stream().filter(e -> e.getType() == HelenusEntityType.TABLE)
+                        .forEach(e -> tableOps.createTable(e));
+
+                break;
+
+			case VALIDATE :
+
+				eachUserTypeInOrder(userTypeOps, e -> userTypeOps.validateUserType(getUserType(e), e));
+
+				sessionRepository.entities().stream().filter(e -> e.getType() == HelenusEntityType.TABLE)
+						.forEach(e -> tableOps.validateTable(getTableMetadata(e), e));
+				break;
+
+			case UPDATE :
+
+				eachUserTypeInOrder(userTypeOps, e -> userTypeOps.updateUserType(getUserType(e), e));
+
+				sessionRepository.entities().stream().filter(e -> e.getType() == HelenusEntityType.TABLE)
+						.forEach(e -> tableOps.updateTable(getTableMetadata(e), e));
+				break;
+
+		}
+
+		KeyspaceMetadata km = getKeyspaceMetadata();
+
+		for (UserType userType : km.getUserTypes()) {
+			sessionRepository.addUserType(userType.getTypeName(), userType);
+		}
+
+	}
+
+    private void eachUserTypeInOrder(UserTypeOperations userTypeOps, Consumer<? super HelenusEntity> action) {
+
+        Set<HelenusEntity> processedSet = new HashSet<HelenusEntity>();
+        Set<HelenusEntity> stack = new HashSet<HelenusEntity>();
+
+        sessionRepository.entities().stream().filter(e -> e.getType() == HelenusEntityType.UDT).forEach(e -> {
+            stack.clear();
+            eachUserTypeInRecursion(e, processedSet, stack, userTypeOps, action);
         });
 
-    if (session == null) return;
-
-    TableOperations tableOps = new TableOperations(this, dropUnusedColumns, dropUnusedIndexes);
-    UserTypeOperations userTypeOps = new UserTypeOperations(this, dropUnusedColumns);
-
-    switch (autoDdl) {
-      case CREATE_DROP:
-
-        // Drop view first, otherwise a `DROP TABLE ...` will fail as the type is still
-        // referenced
-        // by a view.
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.VIEW)
-            .forEach(e -> tableOps.dropView(e));
-
-        // Drop tables second, before DROP TYPE otherwise a `DROP TYPE ...` will fail as
-        // the type is
-        // still referenced by a table.
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.TABLE)
-            .forEach(e -> tableOps.dropTable(e));
-
-        eachUserTypeInReverseOrder(userTypeOps, e -> userTypeOps.dropUserType(e));
-
-        // FALLTHRU to CREATE case (read: the absence of a `break;` statement here is
-        // intentional!)
-      case CREATE:
-        eachUserTypeInOrder(userTypeOps, e -> userTypeOps.createUserType(e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.TABLE)
-            .forEach(e -> tableOps.createTable(e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.VIEW)
-            .forEach(e -> tableOps.createView(e));
-
-        break;
-
-      case VALIDATE:
-        eachUserTypeInOrder(userTypeOps, e -> userTypeOps.validateUserType(getUserType(e), e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.TABLE)
-            .forEach(e -> tableOps.validateTable(getTableMetadata(e), e));
-
-        break;
-
-      case UPDATE:
-        eachUserTypeInOrder(userTypeOps, e -> userTypeOps.updateUserType(getUserType(e), e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.VIEW)
-            .forEach(e -> tableOps.dropView(e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.TABLE)
-            .forEach(e -> tableOps.updateTable(getTableMetadata(e), e));
-
-        sessionRepository
-            .entities()
-            .stream()
-            .filter(e -> e.getType() == HelenusEntityType.VIEW)
-            .forEach(e -> tableOps.createView(e));
-        break;
     }
 
-    KeyspaceMetadata km = getKeyspaceMetadata();
+    private void eachUserTypeInReverseOrder(UserTypeOperations userTypeOps, Consumer<? super HelenusEntity> action) {
+	    ArrayDeque<HelenusEntity> deque = new ArrayDeque<>();
+	    eachUserTypeInOrder(userTypeOps, e -> deque.addFirst(e));
+	    deque.stream().forEach(e -> {action.accept(e); });
+/*
+        Set<HelenusEntity> processedSet = new HashSet<HelenusEntity>();
+        Set<HelenusEntity> stack = new HashSet<HelenusEntity>();
 
-    for (UserType userType : km.getUserTypes()) {
+        sessionRepository.entities().stream()
-      sessionRepository.addUserType(userType.getTypeName(), userType);
+                .filter(e -> e.getType() == HelenusEntityType.UDT)
-    }
+                .collect(Collectors.toCollection(ArrayDeque::new))
-  }
+                .descendingIterator()
-
+                .forEachRemaining(e -> {
-  private void eachUserTypeInOrder(
+                    stack.clear();
-      UserTypeOperations userTypeOps, Consumer<? super HelenusEntity> action) {
+                    eachUserTypeInRecursion(e, processedSet, stack, userTypeOps, action);
-
+                });
-    Set<HelenusEntity> processedSet = new HashSet<HelenusEntity>();
+*/
-    Set<HelenusEntity> stack = new HashSet<HelenusEntity>();
-
-    sessionRepository
-        .entities()
-        .stream()
-        .filter(e -> e.getType() == HelenusEntityType.UDT)
-        .forEach(
-            e -> {
-              stack.clear();
-              eachUserTypeInRecursion(e, processedSet, stack, userTypeOps, action);
-            });
-  }
-
-  private void eachUserTypeInReverseOrder(
-      UserTypeOperations userTypeOps, Consumer<? super HelenusEntity> action) {
-    ArrayDeque<HelenusEntity> deque = new ArrayDeque<>();
-    eachUserTypeInOrder(userTypeOps, e -> deque.addFirst(e));
-    deque
-        .stream()
-        .forEach(
-            e -> {
-              action.accept(e);
-            });
-  }
-
-  private void eachUserTypeInRecursion(
-      HelenusEntity e,
-      Set<HelenusEntity> processedSet,
-      Set<HelenusEntity> stack,
-      UserTypeOperations userTypeOps,
-      Consumer<? super HelenusEntity> action) {
-
-    stack.add(e);
-
-    Collection<HelenusEntity> createBefore = sessionRepository.getUserTypeUses(e);
-
-    for (HelenusEntity be : createBefore) {
-      if (!processedSet.contains(be) && !stack.contains(be)) {
-        eachUserTypeInRecursion(be, processedSet, stack, userTypeOps, action);
-        processedSet.add(be);
-      }
     }
 
-    if (!processedSet.contains(e)) {
+    private void eachUserTypeInRecursion(HelenusEntity e, Set<HelenusEntity> processedSet, Set<HelenusEntity> stack,
-      action.accept(e);
+			UserTypeOperations userTypeOps, Consumer<? super HelenusEntity> action) {
-      processedSet.add(e);
-    }
-  }
 
-  private KeyspaceMetadata getKeyspaceMetadata() {
+		stack.add(e);
-    if (keyspaceMetadata == null) {
-      keyspaceMetadata =
-          session.getCluster().getMetadata().getKeyspace(usingKeyspace.toLowerCase());
-    }
-    return keyspaceMetadata;
-  }
 
-  private TableMetadata getTableMetadata(HelenusEntity entity) {
+		Collection<HelenusEntity> createBefore = sessionRepository.getUserTypeUses(e);
-    return getKeyspaceMetadata().getTable(entity.getName().getName());
-  }
 
-  private UserType getUserType(HelenusEntity entity) {
+		for (HelenusEntity be : createBefore) {
-    return getKeyspaceMetadata().getUserType(entity.getName().getName());
+			if (!processedSet.contains(be) && !stack.contains(be)) {
-  }
+				eachUserTypeInRecursion(be, processedSet, stack, userTypeOps, action);
+				processedSet.add(be);
+			}
+		}
+
+		if (!processedSet.contains(e)) {
+			action.accept(e);
+			processedSet.add(e);
+		}
+
+	}
+
+	private KeyspaceMetadata getKeyspaceMetadata() {
+		if (keyspaceMetadata == null) {
+			keyspaceMetadata = session.getCluster().getMetadata().getKeyspace(usingKeyspace.toLowerCase());
+		}
+		return keyspaceMetadata;
+	}
+
+	private TableMetadata getTableMetadata(HelenusEntity entity) {
+		return getKeyspaceMetadata().getTable(entity.getName().getName());
+
+	}
+
+	private UserType getUserType(HelenusEntity entity) {
+		return getKeyspaceMetadata().getUserType(entity.getName().getName());
+	}
 }

src/main/java/net/helenus/core/SessionRepository.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,30 +15,32 @@
  */
 package net.helenus.core;
 
+import java.util.Collection;
+
 import com.datastax.driver.core.UserType;
 import com.google.common.collect.ImmutableMap;
-import java.util.Collection;
+
 import net.helenus.mapping.HelenusEntity;
 
 public final class SessionRepository {
 
-  private final ImmutableMap<String, UserType> userTypeMap;
+	private final ImmutableMap<String, UserType> userTypeMap;
 
-  private final ImmutableMap<Class<?>, HelenusEntity> entityMap;
+	private final ImmutableMap<Class<?>, HelenusEntity> entityMap;
 
-  public SessionRepository(SessionRepositoryBuilder builder) {
+	public SessionRepository(SessionRepositoryBuilder builder) {
 
-    userTypeMap = ImmutableMap.<String, UserType>builder().putAll(builder.getUserTypeMap()).build();
+		userTypeMap = ImmutableMap.<String, UserType>builder().putAll(builder.getUserTypeMap()).build();
 
-    entityMap =
+		entityMap = ImmutableMap.<Class<?>, HelenusEntity>builder().putAll(builder.getEntityMap()).build();
-        ImmutableMap.<Class<?>, HelenusEntity>builder().putAll(builder.getEntityMap()).build();
+	}
-  }
 
-  public UserType findUserType(String name) {
+	public UserType findUserType(String name) {
-    return userTypeMap.get(name.toLowerCase());
+		return userTypeMap.get(name.toLowerCase());
-  }
+	}
+
+	public Collection<HelenusEntity> entities() {
+		return entityMap.values();
+	}
 
-  public Collection<HelenusEntity> entities() {
-    return entityMap.values();
-  }
 }

src/main/java/net/helenus/core/SessionRepositoryBuilder.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,15 +15,17 @@
  */
 package net.helenus.core;
 
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
 import com.datastax.driver.core.Session;
 import com.datastax.driver.core.UDTValue;
 import com.datastax.driver.core.UserType;
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
-import java.util.Collection;
+
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Optional;
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.mapping.HelenusEntityType;
 import net.helenus.mapping.HelenusProperty;
@@ -34,112 +35,118 @@ import net.helenus.support.HelenusMappingException;
 
 public final class SessionRepositoryBuilder {
 
-  private static final Optional<HelenusEntityType> OPTIONAL_UDT =
+	private static final Optional<HelenusEntityType> OPTIONAL_UDT = Optional.of(HelenusEntityType.UDT);
-      Optional.of(HelenusEntityType.UDT);
 
-  private final Map<Class<?>, HelenusEntity> entityMap = new HashMap<Class<?>, HelenusEntity>();
+	private final Map<Class<?>, HelenusEntity> entityMap = new HashMap<Class<?>, HelenusEntity>();
 
-  private final Map<String, UserType> userTypeMap = new HashMap<String, UserType>();
+	private final Map<String, UserType> userTypeMap = new HashMap<String, UserType>();
 
-  private final Multimap<HelenusEntity, HelenusEntity> userTypeUsesMap = HashMultimap.create();
+	private final Multimap<HelenusEntity, HelenusEntity> userTypeUsesMap = HashMultimap.create();
 
-  private final Session session;
+	private final Session session;
 
-  SessionRepositoryBuilder(Session session) {
-    this.session = session;
-  }
 
-  public SessionRepository build() {
+	SessionRepositoryBuilder(Session session) {
-    return new SessionRepository(this);
+		this.session = session;
-  }
+	}
 
-  public Collection<HelenusEntity> getUserTypeUses(HelenusEntity udtName) {
+	public SessionRepository build() {
-    return userTypeUsesMap.get(udtName);
+		return new SessionRepository(this);
-  }
+	}
 
-  public Collection<HelenusEntity> entities() {
+	public Collection<HelenusEntity> getUserTypeUses(HelenusEntity udtName) {
-    return entityMap.values();
+		return userTypeUsesMap.get(udtName);
-  }
+	}
 
-  protected Map<Class<?>, HelenusEntity> getEntityMap() {
+	public Collection<HelenusEntity> entities() {
-    return entityMap;
+		return entityMap.values();
-  }
+	}
 
-  protected Map<String, UserType> getUserTypeMap() {
+	protected Map<Class<?>, HelenusEntity> getEntityMap() {
-    return userTypeMap;
+		return entityMap;
-  }
+	}
 
-  public void addUserType(String name, UserType userType) {
+	protected Map<String, UserType> getUserTypeMap() {
-    userTypeMap.putIfAbsent(name.toLowerCase(), userType);
+		return userTypeMap;
-  }
+	}
 
-  public HelenusEntity add(Object dsl) {
+	public void addUserType(String name, UserType userType) {
-    return add(dsl, Optional.empty());
+		userTypeMap.putIfAbsent(name.toLowerCase(), userType);
-  }
+	}
 
-  public void addEntity(HelenusEntity entity) {
+	public HelenusEntity add(Object dsl) {
+		return add(dsl, Optional.empty());
+	}
 
-    HelenusEntity concurrentEntity = entityMap.putIfAbsent(entity.getMappingInterface(), entity);
+	public void addEntity(HelenusEntity entity) {
 
-    if (concurrentEntity == null) {
+		HelenusEntity concurrentEntity = entityMap.putIfAbsent(entity.getMappingInterface(), entity);
-      addUserDefinedTypes(entity.getOrderedProperties());
-    }
-  }
 
-  public HelenusEntity add(Object dsl, Optional<HelenusEntityType> type) {
+		if (concurrentEntity == null) {
+			addUserDefinedTypes(entity.getOrderedProperties());
+		}
 
-    HelenusEntity helenusEntity = Helenus.resolve(dsl, session.getCluster().getMetadata());
+	}
 
-    Class<?> iface = helenusEntity.getMappingInterface();
+	public HelenusEntity add(Object dsl, Optional<HelenusEntityType> type) {
 
-    HelenusEntity entity = entityMap.get(iface);
+		HelenusEntity helenusEntity = Helenus.resolve(dsl, session.getCluster().getMetadata());
 
-    if (entity == null) {
+		Class<?> iface = helenusEntity.getMappingInterface();
 
-      entity = helenusEntity;
+		HelenusEntity entity = entityMap.get(iface);
 
-      if (type.isPresent() && entity.getType() != type.get()) {
+		if (entity == null) {
-        throw new HelenusMappingException(
-            "unexpected entity type " + entity.getType() + " for " + entity);
-      }
 
-      HelenusEntity concurrentEntity = entityMap.putIfAbsent(iface, entity);
+			entity = helenusEntity;
 
-      if (concurrentEntity == null) {
+			if (type.isPresent() && entity.getType() != type.get()) {
-        addUserDefinedTypes(entity.getOrderedProperties());
+				throw new HelenusMappingException("unexpected entity type " + entity.getType() + " for " + entity);
-      } else {
+			}
-        entity = concurrentEntity;
-      }
-    }
 
-    return entity;
+			HelenusEntity concurrentEntity = entityMap.putIfAbsent(iface, entity);
-  }
 
-  private void addUserDefinedTypes(Collection<HelenusProperty> props) {
+			if (concurrentEntity == null) {
+				addUserDefinedTypes(entity.getOrderedProperties());
+			} else {
+				entity = concurrentEntity;
+			}
 
-    for (HelenusProperty prop : props) {
+		}
 
-      AbstractDataType type = prop.getDataType();
+		return entity;
+	}
 
-      if (type instanceof DTDataType) {
+	private void addUserDefinedTypes(Collection<HelenusProperty> props) {
-        continue;
-      }
 
-      if (!UDTValue.class.isAssignableFrom(prop.getJavaType())) {
+		for (HelenusProperty prop : props) {
 
-        for (Class<?> udtClass : type.getTypeArguments()) {
+			AbstractDataType type = prop.getDataType();
 
-          if (UDTValue.class.isAssignableFrom(udtClass)) {
+			if (type instanceof DTDataType) {
-            continue;
+				continue;
-          }
+			}
 
-          HelenusEntity addedUserType = add(udtClass, OPTIONAL_UDT);
+			if (!UDTValue.class.isAssignableFrom(prop.getJavaType())) {
+
+				for (Class<?> udtClass : type.getTypeArguments()) {
+
+					if (UDTValue.class.isAssignableFrom(udtClass)) {
+						continue;
+					}
+
+					HelenusEntity addedUserType = add(udtClass, OPTIONAL_UDT);
+
+					if (HelenusEntityType.UDT == prop.getEntity().getType()) {
+						userTypeUsesMap.put(prop.getEntity(), addedUserType);
+					}
+
+				}
+
+			}
+
+		}
+
+	}
 
-          if (HelenusEntityType.UDT == prop.getEntity().getType()) {
-            userTypeUsesMap.put(prop.getEntity(), addedUserType);
-          }
-        }
-      }
-    }
-  }
 }

src/main/java/net/helenus/core/TableOperations.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,92 +15,74 @@
  */
 package net.helenus.core;
 
+import java.util.List;
+
 import com.datastax.driver.core.TableMetadata;
 import com.datastax.driver.core.schemabuilder.SchemaStatement;
-import java.util.List;
+
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.support.HelenusException;
 
 public final class TableOperations {
 
-  private final AbstractSessionOperations sessionOps;
+	private final AbstractSessionOperations sessionOps;
-  private final boolean dropUnusedColumns;
+	private final boolean dropUnusedColumns;
-  private final boolean dropUnusedIndexes;
+	private final boolean dropUnusedIndexes;
 
-  public TableOperations(
+	public TableOperations(AbstractSessionOperations sessionOps, boolean dropUnusedColumns, boolean dropUnusedIndexes) {
-      AbstractSessionOperations sessionOps, boolean dropUnusedColumns, boolean dropUnusedIndexes) {
+		this.sessionOps = sessionOps;
-    this.sessionOps = sessionOps;
+		this.dropUnusedColumns = dropUnusedColumns;
-    this.dropUnusedColumns = dropUnusedColumns;
+		this.dropUnusedIndexes = dropUnusedIndexes;
-    this.dropUnusedIndexes = dropUnusedIndexes;
+	}
-  }
 
-  public void createTable(HelenusEntity entity) {
+	public void createTable(HelenusEntity entity) {
-    sessionOps.execute(SchemaUtil.createTable(entity));
-    executeBatch(SchemaUtil.createIndexes(entity));
-  }
 
-  public void dropTable(HelenusEntity entity) {
+		sessionOps.execute(SchemaUtil.createTable(entity), true);
-    sessionOps.execute(SchemaUtil.dropTable(entity));
-  }
 
-  public void validateTable(TableMetadata tmd, HelenusEntity entity) {
+		executeBatch(SchemaUtil.createIndexes(entity));
+
+	}
+
+	public void dropTable(HelenusEntity entity) {
+
+	    sessionOps.execute(SchemaUtil.dropTable(entity), true);
 
-    if (tmd == null) {
-      throw new HelenusException(
-          "table does not exists "
-              + entity.getName()
-              + "for entity "
-              + entity.getMappingInterface());
     }
 
-    List<SchemaStatement> list = SchemaUtil.alterTable(tmd, entity, dropUnusedColumns);
+	public void validateTable(TableMetadata tmd, HelenusEntity entity) {
 
-    list.addAll(SchemaUtil.alterIndexes(tmd, entity, dropUnusedIndexes));
+		if (tmd == null) {
+			throw new HelenusException(
+					"table not exists " + entity.getName() + "for entity " + entity.getMappingInterface());
+		}
 
-    if (!list.isEmpty()) {
+		List<SchemaStatement> list = SchemaUtil.alterTable(tmd, entity, dropUnusedColumns);
-      throw new HelenusException(
-          "schema changed for entity "
-              + entity.getMappingInterface()
-              + ", apply this command: "
-              + list);
-    }
-  }
 
-  public void updateTable(TableMetadata tmd, HelenusEntity entity) {
+		list.addAll(SchemaUtil.alterIndexes(tmd, entity, dropUnusedIndexes));
-    if (tmd == null) {
-      createTable(entity);
-      return;
-    }
 
-    executeBatch(SchemaUtil.alterTable(tmd, entity, dropUnusedColumns));
+		if (!list.isEmpty()) {
-    executeBatch(SchemaUtil.alterIndexes(tmd, entity, dropUnusedIndexes));
+			throw new HelenusException(
-  }
+					"schema changed for entity " + entity.getMappingInterface() + ", apply this command: " + list);
+		}
+	}
 
-  public void createView(HelenusEntity entity) {
+	public void updateTable(TableMetadata tmd, HelenusEntity entity) {
-    sessionOps.execute(
-        SchemaUtil.createMaterializedView(
-            sessionOps.usingKeyspace(), entity.getName().toCql(), entity));
-    // executeBatch(SchemaUtil.createIndexes(entity)); NOTE: Unfortunately C* 3.10 does not yet support 2i on materialized views.
-  }
 
-  public void dropView(HelenusEntity entity) {
+		if (tmd == null) {
-    sessionOps.execute(
+			createTable(entity);
-        SchemaUtil.dropMaterializedView(
+			return;
-            sessionOps.usingKeyspace(), entity.getName().toCql(), entity));
+		}
-  }
 
-  public void updateView(TableMetadata tmd, HelenusEntity entity) {
+		executeBatch(SchemaUtil.alterTable(tmd, entity, dropUnusedColumns));
-    if (tmd == null) {
+		executeBatch(SchemaUtil.alterIndexes(tmd, entity, dropUnusedIndexes));
-      createTable(entity);
+	}
-      return;
-    }
 
-    executeBatch(SchemaUtil.alterTable(tmd, entity, dropUnusedColumns));
+	private void executeBatch(List<SchemaStatement> list) {
-    executeBatch(SchemaUtil.alterIndexes(tmd, entity, dropUnusedIndexes));
-  }
 
-  private void executeBatch(List<SchemaStatement> list) {
+		list.forEach(s -> {
+			sessionOps.execute(s, true);
+		});
+
+	}
 
-    list.forEach(s -> sessionOps.execute(s));
-  }
 }

src/main/java/net/helenus/core/UnitOfWork.java

@@ -1,816 +1,60 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
 package net.helenus.core;
 
-import static net.helenus.core.HelenusSession.deleted;
-
-import com.google.common.base.Stopwatch;
-import com.google.common.collect.HashBasedTable;
-import com.google.common.collect.Table;
-import com.google.common.collect.TreeTraverser;
-import java.io.Serializable;
 import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Optional;
-import java.util.Set;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-import java.util.function.Consumer;
-import java.util.stream.Collectors;
-import javax.cache.Cache;
-import javax.cache.CacheManager;
-import javax.cache.configuration.CacheEntryListenerConfiguration;
-import javax.cache.configuration.Configuration;
-import javax.cache.integration.CacheLoader;
-import javax.cache.integration.CacheLoaderException;
-import javax.cache.integration.CompletionListener;
-import javax.cache.processor.EntryProcessor;
-import javax.cache.processor.EntryProcessorException;
-import javax.cache.processor.EntryProcessorResult;
 
-import net.helenus.core.cache.CacheUtil;
+/**
-import net.helenus.core.cache.Facet;
+ * Encapsulates the concept of a "transaction" as a unit-of-work.
-import net.helenus.core.cache.MapCache;
+ */
-import net.helenus.core.operation.AbstractOperation;
+public class UnitOfWork {
-import net.helenus.core.operation.BatchOperation;
+
-import net.helenus.mapping.MappingUtil;
+	private final HelenusSession session;
-import net.helenus.support.CheckedRunnable;
+	private ArrayList<UnitOfWork> nested;
-import net.helenus.support.Either;
+
-import net.helenus.support.HelenusException;
+	UnitOfWork(HelenusSession session) {
-import org.apache.commons.lang3.SerializationUtils;
+		this.session = session;
-import org.apache.commons.lang3.StringUtils;
+		// log.record(txn::start)
-import org.slf4j.Logger;
+	}
-import org.slf4j.LoggerFactory;
+
+	/**
+	 * Marks the beginning of a transactional section of work. Will write a record
+	 * to the shared write-ahead log.
+	 *
+	 * @return the handle used to commit or abort the work.
+	 */
+	public UnitOfWork begin() {
+		if (nested == null) {
+			nested = new ArrayList<UnitOfWork>();
+		}
+		UnitOfWork unitOfWork = new UnitOfWork(session);
+		nested.add(unitOfWork);
+		return unitOfWork;
+	}
+
+	/**
+	 * Checks to see if the work performed between calling begin and now can be
+	 * committed or not.
+	 *
+	 * @throws ConflictingUnitOfWorkException
+	 *             when the work overlaps with other concurrent writers.
+	 */
+	public void commit() throws ConflictingUnitOfWorkException {
+		// nested.foreach.commit()
+		// log.record(txn::provisionalCommit)
+		// examine log for conflicts in read-set and write-set between begin and
+		// provisional commit
+		// if (conflict) { throw new ConflictingUnitOfWorkException(this) }
+	}
+
+	/**
+	 * Explicitly discard the work and mark it as as such in the log.
+	 */
+	public void abort() {
+		// log.record(txn::abort)
+		// cache.invalidateSince(txn::start time)
+	}
+
+	public String describeConflicts() {
+		return "it's complex...";
+	}
 
-/** Encapsulates the concept of a "transaction" as a unit-of-work. */
-public class UnitOfWork implements AutoCloseable {
-  private static final Logger LOG = LoggerFactory.getLogger(UnitOfWork.class);
-
-  public final UnitOfWork parent;
-  protected final List<UnitOfWork> nested = new ArrayList<>();
-  protected final Table<String, String, Either<Object, List<Facet>>> cache = HashBasedTable.create();
-  protected final EvictTrackingMapCache<String, Object> statementCache;
-  protected final HelenusSession session;
-  protected String purpose;
-  protected List<String> nestedPurposes = new ArrayList<String>();
-  protected String info;
-  protected int cacheHits = 0;
-  protected int cacheMisses = 0;
-  protected int databaseLookups = 0;
-  protected final Stopwatch elapsedTime;
-  protected Map<String, Double> databaseTime = new HashMap<>();
-  protected double cacheLookupTimeMSecs = 0.0;
-  private List<CheckedRunnable> commitThunks = new ArrayList<>();
-  private List<CheckedRunnable> abortThunks = new ArrayList<>();
-  private Consumer<? super Throwable> exceptionallyThunk;
-  private List<CompletableFuture<?>> asyncOperationFutures = new ArrayList<CompletableFuture<?>>();
-  private boolean aborted = false;
-  private boolean committed = false;
-  private long committedAt = 0L;
-  private BatchOperation batch;
-
-  public UnitOfWork(HelenusSession session) {
-    this(session, null);
-  }
-
-  public UnitOfWork(HelenusSession session, UnitOfWork parent) {
-    Objects.requireNonNull(session, "containing session cannot be null");
-
-    this.parent = parent;
-    if (parent != null) {
-      parent.addNestedUnitOfWork(this);
-    }
-    this.session = session;
-    CacheLoader<String, Object> cacheLoader = null;
-    if (parent != null) {
-      cacheLoader =
-          new CacheLoader<String, Object>() {
-
-            Cache<String, Object> cache = parent.getCache();
-
-            @Override
-            public Object load(String key) throws CacheLoaderException {
-              return cache.get(key);
-            }
-
-            @Override
-            public Map<String, Object> loadAll(Iterable<? extends String> keys)
-                throws CacheLoaderException {
-              Map<String, Object> kvp = new HashMap<String, Object>();
-              for (String key : keys) {
-                kvp.put(key, cache.get(key));
-              }
-              return kvp;
-            }
-          };
-    }
-    this.elapsedTime = Stopwatch.createUnstarted();
-    this.statementCache = new EvictTrackingMapCache<String, Object>(null, "UOW(" + hashCode() + ")", cacheLoader, true);
-  }
-
-  public void addDatabaseTime(String name, Stopwatch amount) {
-    Double time = databaseTime.get(name);
-    if (time == null) {
-      databaseTime.put(name, (double) amount.elapsed(TimeUnit.MICROSECONDS));
-    } else {
-      databaseTime.put(name, time + amount.elapsed(TimeUnit.MICROSECONDS));
-    }
-  }
-
-  public void addCacheLookupTime(Stopwatch amount) {
-    cacheLookupTimeMSecs += amount.elapsed(TimeUnit.MICROSECONDS);
-  }
-
-  public void addNestedUnitOfWork(UnitOfWork uow) {
-    synchronized (nested) {
-      nested.add(uow);
-    }
-  }
-
-  /**
-   * Marks the beginning of a transactional section of work. Will write a
-   * recordCacheAndDatabaseOperationCount to the shared write-ahead log.
-   *
-   * @return the handle used to commit or abort the work.
-   */
-  public synchronized UnitOfWork begin() {
-    elapsedTime.start();
-    // log.record(txn::start)
-    return this;
-  }
-
-  public String getPurpose() {
-    return purpose;
-  }
-
-  public UnitOfWork setPurpose(String purpose) {
-    this.purpose = purpose;
-    return this;
-  }
-
-  public void addFuture(CompletableFuture<?> future) {
-    asyncOperationFutures.add(future);
-  }
-
-  public void setInfo(String info) {
-    this.info = info;
-  }
-
-  public void recordCacheAndDatabaseOperationCount(int cache, int ops) {
-    if (cache > 0) {
-      cacheHits += cache;
-    } else {
-      cacheMisses += Math.abs(cache);
-    }
-    if (ops > 0) {
-      databaseLookups += ops;
-    }
-  }
-
-  public String logTimers(String what) {
-    double e = (double) elapsedTime.elapsed(TimeUnit.MICROSECONDS) / 1000.0;
-    double d = 0.0;
-    double c = cacheLookupTimeMSecs / 1000.0;
-    double fc = (c / e) * 100.0;
-    String database = "";
-    if (databaseTime.size() > 0) {
-      List<String> dbt = new ArrayList<>(databaseTime.size());
-      for (Map.Entry<String, Double> dt : databaseTime.entrySet()) {
-        double t = dt.getValue() / 1000.0;
-        d += t;
-        dbt.add(String.format("%s took %,.3fms %,2.2f%%", dt.getKey(), t, (t / e) * 100.0));
-      }
-      double fd = (d / e) * 100.0;
-      database =
-          String.format(
-              ", %d quer%s (%,.3fms %,2.2f%% - %s)",
-              databaseLookups, (databaseLookups > 1) ? "ies" : "y", d, fd, String.join(", ", dbt));
-    }
-    String cache = "";
-    if (cacheLookupTimeMSecs > 0) {
-      int cacheLookups = cacheHits + cacheMisses;
-      cache =
-          String.format(
-              " with %d cache lookup%s (%,.3fms %,2.2f%% - %,d hit, %,d miss)",
-              cacheLookups, cacheLookups > 1 ? "s" : "", c, fc, cacheHits, cacheMisses);
-    }
-    String da = "";
-    if (databaseTime.size() > 0 || cacheLookupTimeMSecs > 0) {
-      double dat = d + c;
-      double daf = (dat / e) * 100;
-      da =
-          String.format(
-              " consuming %,.3fms for data access, or %,2.2f%% of total UOW time.", dat, daf);
-    }
-    String x = nestedPurposes.stream().distinct().collect(Collectors.joining(", "));
-    String n =
-        nested
-            .stream()
-            .map(uow -> String.valueOf(uow.hashCode()))
-            .collect(Collectors.joining(", "));
-    String s =
-        String.format(
-            Locale.US,
-            "UOW(%s%s) %s in %,.3fms%s%s%s%s%s%s",
-            hashCode(),
-            (nested.size() > 0 ? ", [" + n + "]" : ""),
-            what,
-            e,
-            cache,
-            database,
-            da,
-            (purpose == null ? "" : " " + purpose),
-            (nestedPurposes.isEmpty()) ? "" : ", " + x,
-            (info == null) ? "" : " " + info);
-    return s;
-  }
-
-  private void applyPostCommitFunctions(String what, List<CheckedRunnable> thunks, Consumer<? super Throwable> exceptionallyThunk) {
-    if (!thunks.isEmpty()) {
-      for (CheckedRunnable f : thunks) {
-          try {
-              f.run();
-          } catch (Throwable t) {
-              if (exceptionallyThunk != null) {
-                  exceptionallyThunk.accept(t);
-              }
-          }
-      }
-    }
-  }
-
-  public Optional<Object> cacheLookup(List<Facet> facets) {
-    String tableName = CacheUtil.schemaName(facets);
-    Optional<Object> result = Optional.empty();
-    for (Facet facet : facets) {
-      if (!facet.fixed()) {
-        String columnName = facet.name() + "==" + facet.value();
-        Either<Object, List<Facet>> eitherValue = cache.get(tableName, columnName);
-        if (eitherValue != null) {
-          Object value = deleted;
-          if (eitherValue.isLeft()) {
-            value = eitherValue.getLeft();
-          }
-          return Optional.of(value);
-        }
-      }
-    }
-
-    // Be sure to check all enclosing UnitOfWork caches as well, we may be nested.
-    result = checkParentCache(facets);
-    if (result.isPresent()) {
-      Object r = result.get();
-      Class<?> iface = MappingUtil.getMappingInterface(r);
-      if (Helenus.entity(iface).isDraftable()) {
-        cacheUpdate(r, facets);
-      } else {
-        cacheUpdate(SerializationUtils.<Serializable>clone((Serializable) r), facets);
-      }
-    }
-    return result;
-  }
-
-  private Optional<Object> checkParentCache(List<Facet> facets) {
-    Optional<Object> result = Optional.empty();
-    if (parent != null) {
-      result = parent.checkParentCache(facets);
-    }
-    return result;
-  }
-
-  public List<Facet> cacheEvict(List<Facet> facets) {
-    Either<Object, List<Facet>> deletedObjectFacets = Either.right(facets);
-    String tableName = CacheUtil.schemaName(facets);
-    Optional<Object> optionalValue = cacheLookup(facets);
-
-    for (Facet facet : facets) {
-      if (!facet.fixed()) {
-        String columnKey = facet.name() + "==" + facet.value();
-        // mark the value identified by the facet to `deleted`
-        cache.put(tableName, columnKey, deletedObjectFacets);
-      }
-    }
-
-    // Now, look for other row/col pairs that referenced the same object, mark them
-    // `deleted` if the cache had a value before we added the deleted marker objects.
-    if (optionalValue.isPresent()) {
-      Object value = optionalValue.get();
-      cache
-          .columnKeySet()
-          .forEach(
-              columnKey -> {
-                Either<Object, List<Facet>> eitherCachedValue = cache.get(tableName, columnKey);
-                if (eitherCachedValue.isLeft()) {
-                  Object cachedValue = eitherCachedValue.getLeft();
-                  if (cachedValue == value) {
-                    cache.put(tableName, columnKey, deletedObjectFacets);
-                    String[] parts = columnKey.split("==");
-                    facets.add(new Facet<String>(parts[0], parts[1]));
-                  }
-                }
-              });
-    }
-    return facets;
-  }
-
-  public Cache<String, Object> getCache() {
-    return statementCache;
-  }
-
-  public Object cacheUpdate(Object value, List<Facet> facets) {
-    Object result = null;
-    String tableName = CacheUtil.schemaName(facets);
-    for (Facet facet : facets) {
-      if (!facet.fixed()) {
-        if (facet.alone()) {
-          String columnName = facet.name() + "==" + facet.value();
-          if (result == null) result = cache.get(tableName, columnName);
-          cache.put(tableName, columnName, Either.left(value));
-        }
-      }
-    }
-    return result;
-  }
-
-  public void batch(AbstractOperation s) {
-    if (batch == null) {
-      batch = new BatchOperation(session);
-    }
-    batch.add(s);
-  }
-
-  private Iterator<UnitOfWork> getChildNodes() {
-    return nested.iterator();
-  }
-
-  /**
-   * Checks to see if the work performed between calling begin and now can be committed or not.
-   *
-   * @return a function from which to chain work that only happens when commit is successful
-   * @throws HelenusException when the work overlaps with other concurrent writers.
-   */
-  public synchronized PostCommitFunction<Void, Void> commit() throws HelenusException {
-
-    if (isDone()) {
-      return PostCommitFunction.NULL_ABORT;
-    }
-
-    // Only the outer-most UOW batches statements for commit time, execute them.
-    if (batch != null) {
-      committedAt = batch.sync(this); //TODO(gburd): update cache with writeTime...
-    }
-
-    // All nested UnitOfWork should be committed (not aborted) before calls to
-    // commit, check.
-    boolean canCommit = true;
-    TreeTraverser<UnitOfWork> traverser = TreeTraverser.using(node -> node::getChildNodes);
-    for (UnitOfWork uow : traverser.postOrderTraversal(this)) {
-      if (this != uow) {
-        canCommit &= (!uow.aborted && uow.committed);
-      }
-    }
-
-    if (!canCommit) {
-
-      if (parent == null) {
-
-        // Apply all post-commit abort functions, this is the outer-most UnitOfWork.
-        traverser
-            .postOrderTraversal(this)
-            .forEach(
-                uow -> {
-                  applyPostCommitFunctions("aborted", abortThunks, exceptionallyThunk);
-                });
-
-        elapsedTime.stop();
-        if (LOG.isInfoEnabled()) {
-          LOG.info(logTimers("aborted"));
-        }
-      }
-
-      return PostCommitFunction.NULL_ABORT;
-    } else {
-      committed = true;
-      aborted = false;
-
-      if (parent == null) {
-
-        // Apply all post-commit commit functions, this is the outer-most UnitOfWork.
-        traverser
-            .postOrderTraversal(this)
-            .forEach(
-                uow -> {
-                  applyPostCommitFunctions("committed", uow.commitThunks, exceptionallyThunk);
-                });
-
-        // Merge our statement cache into the session cache if it exists.
-        CacheManager cacheManager = session.getCacheManager();
-        if (cacheManager != null) {
-          for (Map.Entry<String, Object> entry :
-              (Set<Map.Entry<String, Object>>) statementCache.<Map>unwrap(Map.class).entrySet()) {
-            String[] keyParts = entry.getKey().split("\\.");
-            if (keyParts.length == 2) {
-              String cacheName = keyParts[0];
-              String key = keyParts[1];
-              if (!StringUtils.isBlank(cacheName) && !StringUtils.isBlank(key)) {
-                Cache<Object, Object> cache = cacheManager.getCache(cacheName);
-                if (cache != null) {
-                  Object value = entry.getValue();
-                  if (value == deleted) {
-                    cache.remove(key);
-                  } else {
-                    cache.put(key.toString(), value);
-                  }
-                }
-              }
-            }
-          }
-        }
-
-        // Merge our cache into the session cache.
-        session.mergeCache(cache);
-
-        // Spoil any lingering futures that may be out there.
-        asyncOperationFutures.forEach(
-            f ->
-                f.completeExceptionally(
-                    new HelenusException(
-                        "Futures must be resolved before their unit of work has committed/aborted.")));
-
-        elapsedTime.stop();
-        if (LOG.isInfoEnabled()) {
-          LOG.info(logTimers("committed"));
-        }
-
-        return PostCommitFunction.NULL_COMMIT;
-      } else {
-        // Merge cache and statistics into parent if there is one.
-        parent.statementCache.putAll(statementCache.<Map>unwrap(Map.class));
-        parent.statementCache.removeAll(statementCache.getDeletions());
-        parent.mergeCache(cache);
-        parent.addBatched(batch);
-        if (purpose != null) {
-          parent.nestedPurposes.add(purpose);
-        }
-        parent.cacheHits += cacheHits;
-        parent.cacheMisses += cacheMisses;
-        parent.databaseLookups += databaseLookups;
-        parent.cacheLookupTimeMSecs += cacheLookupTimeMSecs;
-        for (Map.Entry<String, Double> dt : databaseTime.entrySet()) {
-          String name = dt.getKey();
-          if (parent.databaseTime.containsKey(name)) {
-            double t = parent.databaseTime.get(name);
-            parent.databaseTime.put(name, t + dt.getValue());
-          } else {
-            parent.databaseTime.put(name, dt.getValue());
-          }
-        }
-      }
-    }
-    // TODO(gburd): hopefully we'll be able to detect conflicts here and so we'd want to...
-    // else {
-    // Constructor<T> ctor = clazz.getConstructor(conflictExceptionClass);
-    // T object = ctor.newInstance(new Object[] { String message });
-    // }
-    return new PostCommitFunction<Void, Void>(commitThunks, abortThunks, exceptionallyThunk, true);
-  }
-
-  private void addBatched(BatchOperation batchArg) {
-    if (batchArg != null) {
-      if (this.batch == null) {
-        this.batch = batchArg;
-      } else {
-        this.batch.addAll(batchArg);
-      }
-    }
-  }
-
-  /**
-   * Explicitly abort the work within this unit of work. Any nested aborted unit of work will
-   * trigger the entire unit of work to commit.
-   */
-  public synchronized void abort() {
-    if (!aborted) {
-      aborted = true;
-
-      // Spoil any pending futures created within the context of this unit of work.
-      asyncOperationFutures.forEach(
-          f ->
-              f.completeExceptionally(
-                  new HelenusException(
-                      "Futures must be resolved before their unit of work has committed/aborted.")));
-
-      TreeTraverser<UnitOfWork> traverser = TreeTraverser.using(node -> node::getChildNodes);
-      traverser
-          .postOrderTraversal(this)
-          .forEach(
-              uow -> {
-                applyPostCommitFunctions("aborted", uow.abortThunks, exceptionallyThunk);
-                uow.abortThunks.clear();
-              });
-
-      if (parent == null) {
-        if (elapsedTime.isRunning()) {
-          elapsedTime.stop();
-        }
-        if (LOG.isInfoEnabled()) {
-          LOG.info(logTimers("aborted"));
-        }
-      }
-
-      // TODO(gburd): when we integrate the transaction support we'll need to...
-      // log.record(txn::abort)
-      // cache.invalidateSince(txn::start time)
-    }
-  }
-
-  private void mergeCache(Table<String, String, Either<Object, List<Facet>>> from) {
-    Table<String, String, Either<Object, List<Facet>>> to = this.cache;
-    from.rowMap()
-        .forEach(
-            (rowKey, columnMap) -> {
-              columnMap.forEach(
-                  (columnKey, value) -> {
-                    if (to.contains(rowKey, columnKey)) {
-                      to.put(
-                          rowKey,
-                          columnKey,
-                          Either.left(
-                              CacheUtil.merge(
-                                  to.get(rowKey, columnKey).getLeft(),
-                                  from.get(rowKey, columnKey).getLeft())));
-                    } else {
-                      to.put(rowKey, columnKey, from.get(rowKey, columnKey));
-                    }
-                  });
-            });
-  }
-
-  public boolean isDone() {
-    return aborted || committed;
-  }
-
-  public String describeConflicts() {
-    return "it's complex...";
-  }
-
-  @Override
-  public void close() throws HelenusException {
-    // Closing a UnitOfWork will abort iff we've not already aborted or committed this unit of work.
-    if (aborted == false && committed == false) {
-      abort();
-    }
-  }
-
-  public boolean hasAborted() {
-    return aborted;
-  }
-
-  public boolean hasCommitted() {
-    return committed;
-  }
-
-  public long committedAt() {
-    return committedAt;
-  }
-
- private static class EvictTrackingMapCache<K, V> implements Cache<K, V> {
-      private final Set<K> deletes;
-      private final Cache<K, V> delegate;
-
-      public EvictTrackingMapCache(CacheManager manager, String name, CacheLoader<K, V> cacheLoader,
-              boolean isReadThrough) {
-          deletes = Collections.synchronizedSet(new HashSet<>());
-          delegate = new MapCache<>(manager, name, cacheLoader, isReadThrough);
-      }
-
-      /** Non-interface method; should only be called by UnitOfWork when merging to an enclosing UnitOfWork. */
-      public Set<K> getDeletions() {
-          return new HashSet<>(deletes);
-      }
-
-      @Override
-      public V get(K key) {
-          if (deletes.contains(key)) {
-              return null;
-          }
-
-          return delegate.get(key);
-      }
-
-      @Override
-      public Map<K, V> getAll(Set<? extends K> keys) {
-          Set<? extends K> clonedKeys = new HashSet<>(keys);
-          clonedKeys.removeAll(deletes);
-          return delegate.getAll(clonedKeys);
-      }
-
-      @Override
-      public boolean containsKey(K key) {
-          if (deletes.contains(key)) {
-              return false;
-          }
-
-          return delegate.containsKey(key);
-      }
-
-      @Override
-      public void loadAll(Set<? extends K> keys, boolean replaceExistingValues, CompletionListener listener) {
-          Set<? extends K> clonedKeys = new HashSet<>(keys);
-          clonedKeys.removeAll(deletes);
-          delegate.loadAll(clonedKeys, replaceExistingValues, listener);
-      }
-
-      @Override
-      public void put(K key, V value) {
-          if (deletes.contains(key)) {
-              deletes.remove(key);
-          }
-
-          delegate.put(key, value);
-      }
-
-      @Override
-      public V getAndPut(K key, V value) {
-          if (deletes.contains(key)) {
-              deletes.remove(key);
-          }
-
-          return delegate.getAndPut(key, value);
-      }
-
-      @Override
-      public void putAll(Map<? extends K, ? extends V> map) {
-          deletes.removeAll(map.keySet());
-          delegate.putAll(map);
-      }
-
-      @Override
-      public synchronized boolean putIfAbsent(K key, V value) {
-          if (!delegate.containsKey(key) && deletes.contains(key)) {
-              deletes.remove(key);
-          }
-
-          return delegate.putIfAbsent(key,  value);
-      }
-
-      @Override
-      public boolean remove(K key) {
-          boolean removed = delegate.remove(key);
-          deletes.add(key);
-          return removed;
-      }
-
-      @Override
-      public boolean remove(K key, V value) {
-          boolean removed = delegate.remove(key, value);
-          if (removed) {
-              deletes.add(key);
-          }
-
-          return removed;
-      }
-
-      @Override
-      public V getAndRemove(K key) {
-          V value = delegate.getAndRemove(key);
-          deletes.add(key);
-          return value;
-      }
-
-      @Override
-      public void removeAll(Set<? extends K> keys) {
-          Set<? extends K> cloneKeys = new HashSet<>(keys);
-          delegate.removeAll(cloneKeys);
-          deletes.addAll(cloneKeys);
-      }
-
-      @Override
-      @SuppressWarnings("unchecked")
-      public synchronized void removeAll() {
-          Map<K, V> impl = delegate.unwrap(Map.class);
-          Set<K> keys = impl.keySet();
-          delegate.removeAll();
-          deletes.addAll(keys);
-      }
-
-      @Override
-      public void clear() {
-          delegate.clear();
-          // TODO(gburd): all parents too
-          deletes.clear();
-      }
-
-    @Override
-    public boolean replace(K key, V oldValue, V newValue) {
-        if (deletes.contains(key)) {
-            return false;
-        }
-
-        return delegate.replace(key, oldValue, newValue);
-    }
-
-    @Override
-    public boolean replace(K key, V value) {
-        if (deletes.contains(key)) {
-            return false;
-        }
-
-        return delegate.replace(key, value);
-    }
-
-    @Override
-    public V getAndReplace(K key, V value) {
-        if (deletes.contains(key)) {
-            return null;
-        }
-
-        return delegate.getAndReplace(key, value);
-    }
-
-    @Override
-    public <C extends Configuration<K, V>> C getConfiguration(Class<C> clazz) {
-        return delegate.getConfiguration(clazz);
-    }
-
-    @Override
-    public <T> T invoke(K key, EntryProcessor<K, V, T> processor, Object... arguments)
-            throws EntryProcessorException {
-        if (deletes.contains(key)) {
-            return null;
-        }
-
-        return delegate.invoke(key,  processor, arguments);
-    }
-
-    @Override
-    public <T> Map<K, EntryProcessorResult<T>> invokeAll(Set<? extends K> keys, EntryProcessor<K, V, T> processor,
-            Object... arguments) {
-        Set<? extends K> clonedKeys = new HashSet<>(keys);
-        clonedKeys.removeAll(deletes);
-        return delegate.invokeAll(clonedKeys, processor, arguments);
-    }
-
-    @Override
-    public String getName() {
-        return delegate.getName();
-    }
-
-    @Override
-    public CacheManager getCacheManager() {
-        return delegate.getCacheManager();
-    }
-
-    @Override
-    public void close() {
-        delegate.close();
-    }
-
-    @Override
-    public boolean isClosed() {
-        return delegate.isClosed();
-    }
-
-    @Override
-    public <T> T unwrap(Class<T> clazz) {
-        return delegate.unwrap(clazz);
-    }
-
-    @Override
-    public void registerCacheEntryListener(CacheEntryListenerConfiguration<K, V> cacheEntryListenerConfiguration) {
-        delegate.registerCacheEntryListener(cacheEntryListenerConfiguration);
-    }
-
-    @Override
-    public void deregisterCacheEntryListener(CacheEntryListenerConfiguration<K, V> cacheEntryListenerConfiguration) {
-        delegate.deregisterCacheEntryListener(cacheEntryListenerConfiguration);
-    }
-
-    @Override
-    public Iterator<Entry<K, V>> iterator() {
-        return delegate.iterator();
-    }
-  }
 }

src/main/java/net/helenus/core/UserTypeOperations.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,62 +15,69 @@
  */
 package net.helenus.core;
 
+import java.util.List;
+
 import com.datastax.driver.core.UserType;
 import com.datastax.driver.core.schemabuilder.SchemaStatement;
-import java.util.List;
+
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.support.HelenusException;
 
 public final class UserTypeOperations {
 
-  private final AbstractSessionOperations sessionOps;
+	private final AbstractSessionOperations sessionOps;
-  private final boolean dropUnusedColumns;
+	private final boolean dropUnusedColumns;
 
-  public UserTypeOperations(AbstractSessionOperations sessionOps, boolean dropUnusedColumns) {
+	public UserTypeOperations(AbstractSessionOperations sessionOps, boolean dropUnusedColumns) {
-    this.sessionOps = sessionOps;
+		this.sessionOps = sessionOps;
-    this.dropUnusedColumns = dropUnusedColumns;
+		this.dropUnusedColumns = dropUnusedColumns;
-  }
+	}
 
-  public void createUserType(HelenusEntity entity) {
+	public void createUserType(HelenusEntity entity) {
 
-    sessionOps.execute(SchemaUtil.createUserType(entity));
+		sessionOps.execute(SchemaUtil.createUserType(entity), true);
-  }
 
-  public void dropUserType(HelenusEntity entity) {
+	}
 
-    sessionOps.execute(SchemaUtil.dropUserType(entity));
+	public void dropUserType(HelenusEntity entity) {
-  }
 
-  public void validateUserType(UserType userType, HelenusEntity entity) {
+        sessionOps.execute(SchemaUtil.dropUserType(entity), true);
 
-    if (userType == null) {
-      throw new HelenusException(
-          "userType not exists " + entity.getName() + "for entity " + entity.getMappingInterface());
     }
 
-    List<SchemaStatement> list = SchemaUtil.alterUserType(userType, entity, dropUnusedColumns);
+	public void validateUserType(UserType userType, HelenusEntity entity) {
 
-    if (!list.isEmpty()) {
+		if (userType == null) {
-      throw new HelenusException(
+			throw new HelenusException(
-          "schema changed for entity "
+					"userType not exists " + entity.getName() + "for entity " + entity.getMappingInterface());
-              + entity.getMappingInterface()
+		}
-              + ", apply this command: "
-              + list);
-    }
-  }
 
-  public void updateUserType(UserType userType, HelenusEntity entity) {
+		List<SchemaStatement> list = SchemaUtil.alterUserType(userType, entity, dropUnusedColumns);
 
-    if (userType == null) {
+		if (!list.isEmpty()) {
-      createUserType(entity);
+			throw new HelenusException(
-      return;
+					"schema changed for entity " + entity.getMappingInterface() + ", apply this command: " + list);
-    }
+		}
 
-    executeBatch(SchemaUtil.alterUserType(userType, entity, dropUnusedColumns));
+	}
-  }
 
-  private void executeBatch(List<SchemaStatement> list) {
+	public void updateUserType(UserType userType, HelenusEntity entity) {
+
+		if (userType == null) {
+			createUserType(entity);
+			return;
+		}
+
+		executeBatch(SchemaUtil.alterUserType(userType, entity, dropUnusedColumns));
+
+	}
+
+	private void executeBatch(List<SchemaStatement> list) {
+
+		list.forEach(s -> {
+			sessionOps.execute(s, true);
+		});
+
+	}
 
-    list.forEach(s -> sessionOps.execute(s));
-  }
 }

src/main/java/net/helenus/core/annotation/Cacheable.java

@@ -1,19 +1,3 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
 package net.helenus.core.annotation;
 
 import java.lang.annotation.ElementType;
@@ -23,4 +7,5 @@ import java.lang.annotation.Target;
 
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
-public @interface Cacheable {}
+public @interface Cacheable {
+}

src/main/java/net/helenus/core/annotation/Retry.java

@@ -1,36 +1,17 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-
 package net.helenus.core.annotation;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
-import java.util.concurrent.TimeoutException;
+
 import net.helenus.core.ConflictingUnitOfWorkException;
 
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.METHOD)
 public @interface Retry {
 
-  Class<? extends Exception>[] on() default {
+	Class<? extends Exception>[] on() default ConflictingUnitOfWorkException.class;
-    ConflictingUnitOfWorkException.class, TimeoutException.class
-  };
 
-  int times() default 3;
+	int times() default 3;
 }

src/main/java/net/helenus/core/aspect/RetryAspect.java

@@ -1,98 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-
-package net.helenus.core.aspect;
-
-import java.lang.reflect.Method;
-import java.util.Arrays;
-import net.helenus.core.annotation.Retry;
-import org.apache.commons.lang3.exception.ExceptionUtils;
-import org.aspectj.lang.ProceedingJoinPoint;
-import org.aspectj.lang.annotation.Around;
-import org.aspectj.lang.annotation.Aspect;
-import org.aspectj.lang.reflect.MethodSignature;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.core.annotation.AnnotationUtils;
-import org.springframework.util.Assert;
-
-@Aspect
-public class RetryAspect {
-
-  private static final Logger log = LoggerFactory.getLogger(RetryAspect.class);
-
-  @Around("@annotation(net.helenus.core.annotations.Retry)")
-  public Object retry(ProceedingJoinPoint pjp) throws Throwable {
-    Retry retryAnnotation = getRetryAnnotation(pjp);
-    return (retryAnnotation != null) ? proceed(pjp, retryAnnotation) : proceed(pjp);
-  }
-
-  private Object proceed(ProceedingJoinPoint pjp) throws Throwable {
-    return pjp.proceed();
-  }
-
-  private Object proceed(ProceedingJoinPoint pjp, Retry retryAnnotation) throws Throwable {
-    int times = retryAnnotation.times();
-    Class<? extends Throwable>[] retryOn = retryAnnotation.on();
-    Assert.isTrue(times > 0, "@Retry{times} should be greater than 0!");
-    Assert.isTrue(retryOn.length > 0, "@Retry{on} should have at least one Throwable!");
-    log.info("Proceed with {} retries on {}", times, Arrays.toString(retryOn));
-    return tryProceeding(pjp, times, retryOn);
-  }
-
-  private Object tryProceeding(
-      ProceedingJoinPoint pjp, int times, Class<? extends Throwable>[] retryOn) throws Throwable {
-    try {
-      return proceed(pjp);
-    } catch (Throwable throwable) {
-      if (isRetryThrowable(throwable, retryOn) && times-- > 0) {
-        log.info("Conflict detected, {} remaining retries on {}", times, Arrays.toString(retryOn));
-        return tryProceeding(pjp, times, retryOn);
-      }
-      throw throwable;
-    }
-  }
-
-  private boolean isRetryThrowable(Throwable throwable, Class<? extends Throwable>[] retryOn) {
-    Throwable[] causes = ExceptionUtils.getThrowables(throwable);
-    for (Throwable cause : causes) {
-      for (Class<? extends Throwable> retryThrowable : retryOn) {
-        if (retryThrowable.isAssignableFrom(cause.getClass())) {
-          return true;
-        }
-      }
-    }
-    return false;
-  }
-
-  private Retry getRetryAnnotation(ProceedingJoinPoint pjp) throws NoSuchMethodException {
-    MethodSignature signature = (MethodSignature) pjp.getSignature();
-    Method method = signature.getMethod();
-    Retry retryAnnotation = AnnotationUtils.findAnnotation(method, Retry.class);
-
-    if (retryAnnotation != null) {
-      return retryAnnotation;
-    }
-
-    Class<?>[] argClasses = new Class[pjp.getArgs().length];
-    for (int i = 0; i < pjp.getArgs().length; i++) {
-      argClasses[i] = pjp.getArgs()[i].getClass();
-    }
-    method = pjp.getTarget().getClass().getMethod(pjp.getSignature().getName(), argClasses);
-    return AnnotationUtils.findAnnotation(method, Retry.class);
-  }
-}

src/main/java/net/helenus/core/aspect/RetryConcurrentUnitOfWorkAspect.java

@@ -2,7 +2,7 @@ package net.helenus.core.aspect;
 
 import java.lang.reflect.Method;
 import java.util.Arrays;
-import net.helenus.core.annotation.Retry;
+
 import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.aspectj.lang.ProceedingJoinPoint;
 import org.aspectj.lang.annotation.Around;
@@ -13,69 +13,71 @@ import org.slf4j.LoggerFactory;
 import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.util.Assert;
 
+import net.helenus.core.annotation.Retry;
+
 @Aspect
 public class RetryConcurrentUnitOfWorkAspect {
 
-  private static final Logger log = LoggerFactory.getLogger(RetryConcurrentUnitOfWorkAspect.class);
+	private static final Logger log = LoggerFactory.getLogger(RetryConcurrentUnitOfWorkAspect.class);
 
-  @Around("@annotation(net.helenus.core.annotations.Retry)")
+	@Around("@annotation(net.helenus.core.annotations.Retry)")
-  public Object retry(ProceedingJoinPoint pjp) throws Throwable {
+	public Object retry(ProceedingJoinPoint pjp) throws Throwable {
-    Retry retryAnnotation = getRetryAnnotation(pjp);
+		Retry retryAnnotation = getRetryAnnotation(pjp);
-    return (retryAnnotation != null) ? proceed(pjp, retryAnnotation) : proceed(pjp);
+		return (retryAnnotation != null) ? proceed(pjp, retryAnnotation) : proceed(pjp);
-  }
+	}
 
-  private Object proceed(ProceedingJoinPoint pjp) throws Throwable {
+	private Object proceed(ProceedingJoinPoint pjp) throws Throwable {
-    return pjp.proceed();
+		return pjp.proceed();
-  }
+	}
 
-  private Object proceed(ProceedingJoinPoint pjp, Retry retryAnnotation) throws Throwable {
+	private Object proceed(ProceedingJoinPoint pjp, Retry retryAnnotation) throws Throwable {
-    int times = retryAnnotation.times();
+		int times = retryAnnotation.times();
-    Class<? extends Throwable>[] retryOn = retryAnnotation.on();
+		Class<? extends Throwable>[] retryOn = retryAnnotation.on();
-    Assert.isTrue(times > 0, "@Retry{times} should be greater than 0!");
+		Assert.isTrue(times > 0, "@Retry{times} should be greater than 0!");
-    Assert.isTrue(retryOn.length > 0, "@Retry{on} should have at least one Throwable!");
+		Assert.isTrue(retryOn.length > 0, "@Retry{on} should have at least one Throwable!");
-    log.info("Proceed with {} retries on {}", times, Arrays.toString(retryOn));
+		log.info("Proceed with {} retries on {}", times, Arrays.toString(retryOn));
-    return tryProceeding(pjp, times, retryOn);
+		return tryProceeding(pjp, times, retryOn);
-  }
+	}
 
-  private Object tryProceeding(
+	private Object tryProceeding(ProceedingJoinPoint pjp, int times, Class<? extends Throwable>[] retryOn)
-      ProceedingJoinPoint pjp, int times, Class<? extends Throwable>[] retryOn) throws Throwable {
+			throws Throwable {
-    try {
+		try {
-      return proceed(pjp);
+			return proceed(pjp);
-    } catch (Throwable throwable) {
+		} catch (Throwable throwable) {
-      if (isRetryThrowable(throwable, retryOn) && times-- > 0) {
+			if (isRetryThrowable(throwable, retryOn) && times-- > 0) {
-        log.info("Conflict detected, {} remaining retries on {}", times, Arrays.toString(retryOn));
+				log.info("Conflict detected, {} remaining retries on {}", times, Arrays.toString(retryOn));
-        return tryProceeding(pjp, times, retryOn);
+				return tryProceeding(pjp, times, retryOn);
-      }
+			}
-      throw throwable;
+			throw throwable;
-    }
+		}
-  }
+	}
 
-  private boolean isRetryThrowable(Throwable throwable, Class<? extends Throwable>[] retryOn) {
+	private boolean isRetryThrowable(Throwable throwable, Class<? extends Throwable>[] retryOn) {
-    Throwable[] causes = ExceptionUtils.getThrowables(throwable);
+		Throwable[] causes = ExceptionUtils.getThrowables(throwable);
-    for (Throwable cause : causes) {
+		for (Throwable cause : causes) {
-      for (Class<? extends Throwable> retryThrowable : retryOn) {
+			for (Class<? extends Throwable> retryThrowable : retryOn) {
-        if (retryThrowable.isAssignableFrom(cause.getClass())) {
+				if (retryThrowable.isAssignableFrom(cause.getClass())) {
-          return true;
+					return true;
-        }
+				}
-      }
+			}
-    }
+		}
-    return false;
+		return false;
-  }
+	}
 
-  private Retry getRetryAnnotation(ProceedingJoinPoint pjp) throws NoSuchMethodException {
+	private Retry getRetryAnnotation(ProceedingJoinPoint pjp) throws NoSuchMethodException {
-    MethodSignature signature = (MethodSignature) pjp.getSignature();
+		MethodSignature signature = (MethodSignature) pjp.getSignature();
-    Method method = signature.getMethod();
+		Method method = signature.getMethod();
-    Retry retryAnnotation = AnnotationUtils.findAnnotation(method, Retry.class);
+		Retry retryAnnotation = AnnotationUtils.findAnnotation(method, Retry.class);
 
-    if (retryAnnotation != null) {
+		if (retryAnnotation != null) {
-      return retryAnnotation;
+			return retryAnnotation;
-    }
+		}
 
-    Class[] argClasses = new Class[pjp.getArgs().length];
+		Class[] argClasses = new Class[pjp.getArgs().length];
-    for (int i = 0; i < pjp.getArgs().length; i++) {
+		for (int i = 0; i < pjp.getArgs().length; i++) {
-      argClasses[i] = pjp.getArgs()[i].getClass();
+			argClasses[i] = pjp.getArgs()[i].getClass();
-    }
+		}
-    method = pjp.getTarget().getClass().getMethod(pjp.getSignature().getName(), argClasses);
+		method = pjp.getTarget().getClass().getMethod(pjp.getSignature().getName(), argClasses);
-    return AnnotationUtils.findAnnotation(method, Retry.class);
+		return AnnotationUtils.findAnnotation(method, Retry.class);
-  }
+	}
 }

src/main/java/net/helenus/core/cache/BoundFacet.java

@@ -1,60 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.cache;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Set;
-import java.util.stream.Collectors;
-import net.helenus.mapping.HelenusProperty;
-
-public class BoundFacet extends Facet<String> {
-  private final Map<HelenusProperty, Object> properties;
-
-  public BoundFacet(HelenusProperty property, Object value) {
-    super(property.getPropertyName(), value == null ? null : value.toString());
-    this.properties = new HashMap<HelenusProperty, Object>(1);
-    this.properties.put(property, value);
-  }
-
-  public Set<HelenusProperty> getProperties() {
-    return properties.keySet();
-  }
-
-  public BoundFacet(String name, Map<HelenusProperty, Object> properties) {
-    super(
-        name,
-        (properties.keySet().size() > 1)
-            ? "["
-                + String.join(
-                    ", ",
-                    properties
-                        .keySet()
-                        .stream()
-                        .map(key -> properties.get(key).toString())
-                        .collect(Collectors.toSet()))
-                + "]"
-            : String.join(
-                "",
-                properties
-                    .keySet()
-                    .stream()
-                    .map(key -> properties.get(key).toString())
-                    .collect(Collectors.toSet())));
-    this.properties = properties;
-  }
-}

src/main/java/net/helenus/core/cache/CacheUtil.java

@@ -1,221 +0,0 @@
-package net.helenus.core.cache;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-import net.helenus.core.Helenus;
-import net.helenus.core.reflect.Entity;
-import net.helenus.core.reflect.MapExportable;
-import net.helenus.mapping.HelenusEntity;
-import net.helenus.mapping.HelenusProperty;
-import net.helenus.mapping.MappingUtil;
-import net.helenus.mapping.value.BeanColumnValueProvider;
-
-public class CacheUtil {
-
-  public static List<String[]> combinations(List<String> items) {
-    int n = items.size();
-    if (n > 20) throw new IllegalArgumentException(n + " is out of range");
-    long e = Math.round(Math.pow(2, n));
-    List<String[]> out = new ArrayList<String[]>((int) e - 1);
-    for (int k = 1; k <= items.size(); k++) {
-      kCombinations(items, 0, k, new String[k], out);
-    }
-    return out;
-  }
-
-  private static void kCombinations(
-      List<String> items, int n, int k, String[] arr, List<String[]> out) {
-    if (k == 0) {
-      out.add(arr.clone());
-    } else {
-      for (int i = n; i <= items.size() - k; i++) {
-        arr[arr.length - k] = items.get(i);
-        kCombinations(items, i + 1, k - 1, arr, out);
-      }
-    }
-  }
-
-  public static List<String> flatKeys(String table, List<Facet> facets) {
-    return flattenFacets(facets)
-        .stream()
-        .map(
-            combination -> {
-              return table + "." + Arrays.toString(combination);
-            })
-        .collect(Collectors.toList());
-  }
-
-  public static List<String[]> flattenFacets(List<Facet> facets) {
-    List<String[]> combinations =
-        CacheUtil.combinations(
-            facets
-                .stream()
-                .filter(facet -> !facet.fixed())
-                .filter(facet -> facet.value() != null)
-                .map(
-                    facet -> {
-                      return facet.name() + "==" + facet.value();
-                    })
-                .collect(Collectors.toList()));
-    // TODO(gburd): rework so as to not generate the combinations at all rather than filter
-    facets =
-        facets
-            .stream()
-            .filter(f -> !f.fixed())
-            .filter(f -> !f.alone() || !f.combined())
-            .collect(Collectors.toList());
-    for (Facet facet : facets) {
-      combinations =
-          combinations
-              .stream()
-              .filter(
-                  combo -> {
-                    // When used alone, this facet is not distinct so don't use it as a key.
-                    if (combo.length == 1) {
-                      if (!facet.alone() && combo[0].startsWith(facet.name() + "==")) {
-                        return false;
-                      }
-                    } else {
-                      if (!facet.combined()) {
-                        for (String c : combo) {
-                          // Don't use this facet in combination with others to create keys.
-                          if (c.startsWith(facet.name() + "==")) {
-                            return false;
-                          }
-                        }
-                      }
-                    }
-                    return true;
-                  })
-              .collect(Collectors.toList());
-    }
-    return combinations;
-  }
-
-  /** Merge changed values in the map behind `from` into `to`. */
-  public static Object merge(Object t, Object f) {
-    HelenusEntity entity = Helenus.resolve(MappingUtil.getMappingInterface(t));
-
-    if (t == f) return t;
-    if (f == null) return t;
-    if (t == null) return f;
-
-    if (t instanceof MapExportable
-        && t instanceof Entity
-        && f instanceof MapExportable
-        && f instanceof Entity) {
-      Entity to = (Entity) t;
-      Entity from = (Entity) f;
-      Map<String, Object> toValueMap = ((MapExportable) to).toMap();
-      Map<String, Object> fromValueMap = ((MapExportable) from).toMap();
-      for (HelenusProperty prop : entity.getOrderedProperties()) {
-        switch (prop.getColumnType()) {
-          case PARTITION_KEY:
-          case CLUSTERING_COLUMN:
-            continue;
-          default:
-            Object toVal = BeanColumnValueProvider.INSTANCE.getColumnValue(to, -1, prop, false);
-            Object fromVal = BeanColumnValueProvider.INSTANCE.getColumnValue(from, -1, prop, false);
-            String ttlKey = ttlKey(prop);
-            String writeTimeKey = writeTimeKey(prop);
-            int[] toTtlI = (int[]) toValueMap.get(ttlKey);
-            int toTtl = (toTtlI != null) ? toTtlI[0] : 0;
-            Long toWriteTime = (Long) toValueMap.get(writeTimeKey);
-            int[] fromTtlI = (int[]) fromValueMap.get(ttlKey);
-            int fromTtl = (fromTtlI != null) ? fromTtlI[0] : 0;
-            Long fromWriteTime = (Long) fromValueMap.get(writeTimeKey);
-
-            if (toVal != null) {
-              if (fromVal != null) {
-                if (toVal == fromVal) {
-                  // Case: object identity
-                  // Goal: ensure write time and ttl are also in sync
-                  if (fromWriteTime != null
-                      && fromWriteTime != 0L
-                      && (toWriteTime == null || fromWriteTime > toWriteTime)) {
-                    ((MapExportable) to).put(writeTimeKey, fromWriteTime);
-                  }
-                  if (fromTtl > 0 && fromTtl > toTtl) {
-                    ((MapExportable) to).put(ttlKey, fromTtl);
-                  }
-                } else if (fromWriteTime != null && fromWriteTime != 0L) {
-                  // Case: to exists and from exists
-                  // Goal: copy over from -> to iff from.writeTime > to.writeTime
-                  if (toWriteTime != null && toWriteTime != 0L) {
-                    if (fromWriteTime > toWriteTime) {
-                      ((MapExportable) to).put(prop.getPropertyName(), fromVal);
-                      ((MapExportable) to).put(writeTimeKey, fromWriteTime);
-                      if (fromTtl > 0) {
-                        ((MapExportable) to).put(ttlKey, fromTtl);
-                      }
-                    }
-                  } else {
-                    ((MapExportable) to).put(prop.getPropertyName(), fromVal);
-                    ((MapExportable) to).put(writeTimeKey, fromWriteTime);
-                    if (fromTtl > 0) {
-                      ((MapExportable) to).put(ttlKey, fromTtl);
-                    }
-                  }
-                } else {
-                  if (toWriteTime == null || toWriteTime == 0L) {
-                    // Caution, entering grey area...
-                    if (!toVal.equals(fromVal)) {
-                      // dangerous waters here, values diverge without information that enables resolution,
-                      // policy (for now) is to move value from -> to anyway.
-                      ((MapExportable) to).put(prop.getPropertyName(), fromVal);
-                      if (fromTtl > 0) {
-                        ((MapExportable) to).put(ttlKey, fromTtl);
-                      }
-                    }
-                  }
-                }
-              }
-            } else {
-              // Case: from exists, but to doesn't (it's null)
-              // Goal: copy over from -> to, include ttl and writeTime if present
-              if (fromVal != null) {
-                ((MapExportable) to).put(prop.getPropertyName(), fromVal);
-                if (fromWriteTime != null && fromWriteTime != 0L) {
-                  ((MapExportable) to).put(writeTimeKey, fromWriteTime);
-                }
-                if (fromTtl > 0) {
-                  ((MapExportable) to).put(ttlKey, fromTtl);
-                }
-              }
-            }
-        }
-      }
-      return to;
-    }
-    return t;
-  }
-
-  public static String schemaName(List<Facet> facets) {
-    return facets
-        .stream()
-        .filter(Facet::fixed)
-        .map(facet -> facet.value().toString())
-        .collect(Collectors.joining("."));
-  }
-
-  public static String writeTimeKey(HelenusProperty prop) {
-    return writeTimeKey(prop.getColumnName().toCql(false));
-  }
-
-  public static String ttlKey(HelenusProperty prop) {
-    return ttlKey(prop.getColumnName().toCql(false));
-  }
-
-  public static String writeTimeKey(String columnName) {
-    String key = "_" + columnName + "_writeTime";
-    return key.toLowerCase();
-  }
-
-  public static String ttlKey(String columnName) {
-    String key = "_" + columnName + "_ttl";
-    return key.toLowerCase();
-  }
-}

src/main/java/net/helenus/core/cache/Facet.java

@@ -1,69 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-
-package net.helenus.core.cache;
-
-/** An Entity is identifiable via one or more Facets */
-public class Facet<T> {
-  private final String name;
-  private T value;
-  private boolean fixed = false;
-  private boolean alone = true;
-  private boolean combined = true;
-
-  public Facet(String name) {
-    this.name = name;
-  }
-
-  public Facet(String name, T value) {
-    this.name = name;
-    this.value = value;
-  }
-
-  public String name() {
-    return name;
-  }
-
-  public T value() {
-    return value;
-  }
-
-  public Facet setFixed() {
-    fixed = true;
-    return this;
-  }
-
-  public boolean fixed() {
-    return fixed;
-  }
-
-  public void setUniquelyIdentifyingWhenAlone(boolean alone) {
-    this.alone = alone;
-  }
-
-  public void setUniquelyIdentifyingWhenCombined(boolean combined) {
-    this.combined = combined;
-  }
-
-  public boolean alone() {
-    return alone;
-  }
-
-  public boolean combined() {
-    return combined;
-  }
-}

src/main/java/net/helenus/core/cache/MapCache.java

@@ -1,463 +0,0 @@
-package net.helenus.core.cache;
-
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.Map;
-import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-import javax.cache.Cache;
-import javax.cache.CacheManager;
-import javax.cache.configuration.CacheEntryListenerConfiguration;
-import javax.cache.configuration.Configuration;
-import javax.cache.event.CacheEntryRemovedListener;
-import javax.cache.integration.CacheLoader;
-import javax.cache.integration.CompletionListener;
-import javax.cache.processor.EntryProcessor;
-import javax.cache.processor.EntryProcessorException;
-import javax.cache.processor.EntryProcessorResult;
-import javax.cache.processor.MutableEntry;
-
-public class MapCache<K, V> implements Cache<K, V> {
-  private final CacheManager manager;
-  private final String name;
-  private Map<K, V> map = new ConcurrentHashMap<>();
-  private Set<CacheEntryRemovedListener<K, V>> cacheEntryRemovedListeners = new HashSet<>();
-  private CacheLoader<K, V> cacheLoader = null;
-  private boolean isReadThrough = false;
-
-  private static class MapConfiguration<K, V> implements Configuration<K, V> {
-    private static final long serialVersionUID = 6093947542772516209L;
-
-    @Override
-    public Class<K> getKeyType() {
-      return null;
-    }
-
-    @Override
-    public Class<V> getValueType() {
-      return null;
-    }
-
-    @Override
-    public boolean isStoreByValue() {
-      return false;
-    }
-  }
-
-  public MapCache(
-      CacheManager manager, String name, CacheLoader<K, V> cacheLoader, boolean isReadThrough) {
-    this.manager = manager;
-    this.name = name;
-    this.cacheLoader = cacheLoader;
-    this.isReadThrough = isReadThrough;
-  }
-
-
-  /** {@inheritDoc} */
-  @Override
-  public V get(K key) {
-    V value = null;
-    synchronized (map) {
-      value = map.get(key);
-      if (value == null && isReadThrough && cacheLoader != null) {
-        V loadedValue = cacheLoader.load(key);
-        if (loadedValue != null) {
-          map.put(key, loadedValue);
-          value = loadedValue;
-        }
-      }
-    }
-    return value;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public Map<K, V> getAll(Set<? extends K> keys) {
-    Map<K, V> result = null;
-    synchronized (map) {
-      result = new HashMap<K, V>(keys.size());
-      Iterator<? extends K> it = keys.iterator();
-      while (it.hasNext()) {
-        K key = it.next();
-        V value = map.get(key);
-        if (value != null) {
-          result.put(key, value);
-          it.remove();
-        }
-      }
-      if (keys.size() != 0 && isReadThrough && cacheLoader != null) {
-        Map<K, V> loadedValues = cacheLoader.loadAll(keys);
-        for (Map.Entry<K, V> entry : loadedValues.entrySet()) {
-          V v = entry.getValue();
-          if (v != null) {
-            K k = entry.getKey();
-            map.put(k, v);
-            result.put(k, v);
-          }
-        }
-      }
-    }
-    return result;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean containsKey(K key) {
-    return map.containsKey(key);
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void loadAll(
-      Set<? extends K> keys, boolean replaceExistingValues, CompletionListener completionListener) {
-    if (cacheLoader != null) {
-      try {
-        synchronized (map) {
-          Map<K, V> loadedValues = cacheLoader.loadAll(keys);
-          for (Map.Entry<K, V> entry : loadedValues.entrySet()) {
-            V value = entry.getValue();
-            K key = entry.getKey();
-            if (value != null) {
-              boolean existsCurrently = map.containsKey(key);
-              if (!existsCurrently || replaceExistingValues) {
-                map.put(key, value);
-                keys.remove(key);
-              }
-            }
-          }
-        }
-      } catch (Exception e) {
-        if (completionListener != null) {
-          completionListener.onException(e);
-        }
-      }
-    }
-    if (completionListener != null) {
-      if (keys.isEmpty()) {
-        completionListener.onCompletion();
-      }
-    }
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void put(K key, V value) {
-    map.put(key, value);
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public V getAndPut(K key, V value) {
-    V result = null;
-    synchronized (map) {
-      result = map.get(key);
-      if (result == null && isReadThrough && cacheLoader != null) {
-        V loadedValue = cacheLoader.load(key);
-        if (loadedValue != null) {
-          result = loadedValue;
-        }
-      }
-      map.put(key, value);
-    }
-    return result;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void putAll(Map<? extends K, ? extends V> map) {
-    synchronized (map) {
-      for (Map.Entry<? extends K, ? extends V> entry : map.entrySet()) {
-        this.map.put(entry.getKey(), entry.getValue());
-      }
-    }
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean putIfAbsent(K key, V value) {
-    synchronized (map) {
-      if (!map.containsKey(key)) {
-        map.put(key, value);
-        return true;
-      } else {
-        return false;
-      }
-    }
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean remove(K key) {
-    boolean removed = false;
-    synchronized (map) {
-      removed = map.remove(key) != null;
-      notifyRemovedListeners(key);
-    }
-    return removed;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean remove(K key, V oldValue) {
-    synchronized (map) {
-      V value = map.get(key);
-      if (value != null && oldValue.equals(value)) {
-        map.remove(key);
-        notifyRemovedListeners(key);
-        return true;
-      }
-    }
-    return false;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public V getAndRemove(K key) {
-    synchronized (map) {
-      V oldValue = null;
-      oldValue = map.get(key);
-      map.remove(key);
-      notifyRemovedListeners(key);
-      return oldValue;
-    }
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean replace(K key, V oldValue, V newValue) {
-    synchronized (map) {
-      V value = map.get(key);
-      if (value != null && oldValue.equals(value)) {
-        map.put(key, newValue);
-        return true;
-      }
-    }
-    return false;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean replace(K key, V value) {
-    synchronized (map) {
-      if (map.containsKey(key)) {
-        map.put(key, value);
-        return true;
-      }
-    }
-    return false;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public V getAndReplace(K key, V value) {
-    synchronized (map) {
-      V oldValue = map.get(key);
-      if (value != null && value.equals(oldValue)) {
-        map.put(key, value);
-        return oldValue;
-      }
-    }
-    return null;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void removeAll(Set<? extends K> keys) {
-    synchronized (map) {
-      Iterator<? extends K> it = keys.iterator();
-      while (it.hasNext()) {
-        K key = it.next();
-        if (map.containsKey(key)) {
-          map.remove(key);
-        } else {
-          it.remove();
-        }
-      }
-    }
-    notifyRemovedListeners(keys);
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void removeAll() {
-    synchronized (map) {
-      Set<K> keys = map.keySet();
-      map.clear();
-      notifyRemovedListeners(keys);
-    }
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void clear() {
-    map.clear();
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public <C extends Configuration<K, V>> C getConfiguration(Class<C> clazz) {
-    if (!MapConfiguration.class.isAssignableFrom(clazz)) {
-      throw new IllegalArgumentException();
-    }
-    return null;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public <T> T invoke(K key, EntryProcessor<K, V, T> entryProcessor, Object... arguments)
-      throws EntryProcessorException {
-    // TODO
-    return null;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public <T> Map<K, EntryProcessorResult<T>> invokeAll(
-      Set<? extends K> keys, EntryProcessor<K, V, T> entryProcessor, Object... arguments) {
-    synchronized (map) {
-      for (K key : keys) {
-        V value = map.get(key);
-        if (value != null) {
-          entryProcessor.process(
-              new MutableEntry<K, V>() {
-                @Override
-                public boolean exists() {
-                  return map.containsKey(key);
-                }
-
-                @Override
-                public void remove() {
-                  synchronized (map) {
-                    V value = map.get(key);
-                    if (value != null) {
-                      map.remove(key);
-                      notifyRemovedListeners(key);
-                    }
-                  }
-                }
-
-                @Override
-                public K getKey() {
-                  return key;
-                }
-
-                @Override
-                public V getValue() {
-                  return map.get(value);
-                }
-
-                @Override
-                public <T> T unwrap(Class<T> clazz) {
-                  return null;
-                }
-
-                @Override
-                public void setValue(V value) {
-                  map.put(key, value);
-                }
-              },
-              arguments);
-        }
-      }
-    }
-    return null;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public String getName() {
-    return name;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public CacheManager getCacheManager() {
-    return manager;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void close() {}
-
-  /** {@inheritDoc} */
-  @Override
-  public boolean isClosed() {
-    return false;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  @SuppressWarnings("unchecked")
-  public <T> T unwrap(Class<T> clazz) {
-    if (Map.class.isAssignableFrom(clazz)) {
-        return (T) map;
-    }
-    return null;
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void registerCacheEntryListener(
-      CacheEntryListenerConfiguration<K, V> cacheEntryListenerConfiguration) {
-    //cacheEntryRemovedListeners.add(cacheEntryListenerConfiguration.getCacheEntryListenerFactory().create());
-  }
-
-  /** {@inheritDoc} */
-  @Override
-  public void deregisterCacheEntryListener(
-      CacheEntryListenerConfiguration<K, V> cacheEntryListenerConfiguration) {}
-
-  /** {@inheritDoc} */
-  @Override
-  public Iterator<Entry<K, V>> iterator() {
-    synchronized (map) {
-      return new Iterator<Entry<K, V>>() {
-
-        Iterator<Map.Entry<K, V>> entries = map.entrySet().iterator();
-
-        @Override
-        public boolean hasNext() {
-          return entries.hasNext();
-        }
-
-        @Override
-        public Entry<K, V> next() {
-          Map.Entry<K, V> entry = entries.next();
-          return new Entry<K, V>() {
-            K key = entry.getKey();
-            V value = entry.getValue();
-
-            @Override
-            public K getKey() {
-              return key;
-            }
-
-            @Override
-            public V getValue() {
-              return value;
-            }
-
-            @Override
-            public <T> T unwrap(Class<T> clazz) {
-              return null;
-            }
-          };
-        }
-
-        @Override
-        public void remove() {
-          throw new UnsupportedOperationException();
-        }
-      };
-    }
-  }
-
-  private void notifyRemovedListeners(K key) {
-    //      if (cacheEntryRemovedListeners != null) {
-    //          cacheEntryRemovedListeners.forEach(listener -> listener.onRemoved())
-    //      }
-  }
-
-  private void notifyRemovedListeners(Set<? extends K> keys) {}
-}

src/main/java/net/helenus/core/cache/UnboundFacet.java

@@ -1,95 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.cache;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import net.helenus.core.SchemaUtil;
-import net.helenus.mapping.HelenusProperty;
-
-public class UnboundFacet extends Facet<String> {
-
-  private final List<HelenusProperty> properties;
-  private final boolean alone;
-  private final boolean combined;
-
-  public UnboundFacet(List<HelenusProperty> properties, boolean alone, boolean combined) {
-    super(SchemaUtil.createPrimaryKeyPhrase(properties));
-    this.properties = properties;
-    this.alone = alone;
-    this.combined = combined;
-  }
-
-  public UnboundFacet(List<HelenusProperty> properties) {
-    this(properties, true, true);
-  }
-
-  public UnboundFacet(HelenusProperty property, boolean alone, boolean combined) {
-    super(property.getPropertyName());
-    properties = new ArrayList<HelenusProperty>();
-    properties.add(property);
-    this.alone = alone;
-    this.combined = combined;
-  }
-
-  public UnboundFacet(HelenusProperty property) {
-    this(property, true, true);
-  }
-
-  public List<HelenusProperty> getProperties() {
-    return properties;
-  }
-
-  public Binder binder() {
-    return new Binder(name(), properties, alone, combined);
-  }
-
-  public static class Binder {
-
-    private final String name;
-    private final boolean alone;
-    private final boolean combined;
-    private final List<HelenusProperty> properties = new ArrayList<HelenusProperty>();
-    private Map<HelenusProperty, Object> boundProperties = new HashMap<HelenusProperty, Object>();
-
-    Binder(String name, List<HelenusProperty> properties, boolean alone, boolean combined) {
-      this.name = name;
-      this.properties.addAll(properties);
-      this.alone = alone;
-      this.combined = combined;
-    }
-
-    public Binder setValueForProperty(HelenusProperty prop, Object value) {
-      properties.remove(prop);
-      boundProperties.put(prop, value);
-      return this;
-    }
-
-    public boolean isBound() {
-      return properties.isEmpty();
-    }
-
-    public BoundFacet bind() {
-      BoundFacet facet = new BoundFacet(name, boundProperties);
-      facet.setUniquelyIdentifyingWhenAlone(alone);
-      facet.setUniquelyIdentifyingWhenCombined(combined);
-      return facet;
-    }
-  }
-}

src/main/java/net/helenus/core/operation/AbstractFilterOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,153 +15,97 @@
  */
 package net.helenus.core.operation;
 
-import java.util.*;
+import java.util.LinkedList;
+import java.util.List;
+
 import net.helenus.core.*;
-import net.helenus.core.cache.Facet;
-import net.helenus.core.cache.UnboundFacet;
-import net.helenus.core.reflect.HelenusPropertyNode;
-import net.helenus.mapping.HelenusProperty;
 
 public abstract class AbstractFilterOperation<E, O extends AbstractFilterOperation<E, O>>
-    extends AbstractOperation<E, O> {
+		extends
+			AbstractOperation<E, O> {
 
-  protected List<Filter<?>> filters = null;
+	protected List<Filter<?>> filters = null;
-  protected List<Filter<?>> ifFilters = null;
+	protected List<Filter<?>> ifFilters = null;
 
-  public AbstractFilterOperation(AbstractSessionOperations sessionOperations) {
+	public AbstractFilterOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O where(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Operator operator, V val) {
+	public <V> O where(Getter<V> getter, Operator operator, V val) {
 
-    addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Filter<V> filter) {
+	public <V> O where(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O and(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Operator operator, V val) {
+	public <V> O and(Getter<V> getter, Operator operator, V val) {
 
-    addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Filter<V> filter) {
+	public <V> O and(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
 
-    addIfFilter(Filter.create(getter, postulate));
+		addIfFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
+	public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
 
-    addIfFilter(Filter.create(getter, operator, val));
+		addIfFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Filter<V> filter) {
+	public <V> O onlyIf(Filter<V> filter) {
 
-    addIfFilter(filter);
+		addIfFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  private void addFilter(Filter<?> filter) {
+	private void addFilter(Filter<?> filter) {
-    if (filters == null) {
+		if (filters == null) {
-      filters = new LinkedList<Filter<?>>();
+			filters = new LinkedList<Filter<?>>();
-    }
+		}
-    filters.add(filter);
+		filters.add(filter);
-  }
+	}
 
-  private void addIfFilter(Filter<?> filter) {
+	private void addIfFilter(Filter<?> filter) {
-    if (ifFilters == null) {
+		if (ifFilters == null) {
-      ifFilters = new LinkedList<Filter<?>>();
+			ifFilters = new LinkedList<Filter<?>>();
-    }
+		}
-    ifFilters.add(filter);
+		ifFilters.add(filter);
-  }
+	}
 
-  @Override
-  protected boolean isIdempotentOperation() {
-    if (filters == null) {
-      return super.isIdempotentOperation();
-    }
-
-    return filters
-            .stream()
-            .anyMatch(
-                filter -> {
-                  HelenusPropertyNode node = filter.getNode();
-                  if (node != null) {
-                    HelenusProperty prop = node.getProperty();
-                    if (prop != null) {
-                      return prop.isIdempotent();
-                    }
-                  }
-                  return false;
-                })
-        || super.isIdempotentOperation();
-  }
-
-  protected List<Facet> bindFacetValues(List<Facet> facets) {
-    if (facets == null) {
-      return new ArrayList<Facet>();
-    }
-    List<Facet> boundFacets = new ArrayList<>();
-    Map<HelenusProperty, Filter> filterMap = new HashMap<>(filters.size());
-    filters.forEach(f -> filterMap.put(f.getNode().getProperty(), f));
-
-    for (Facet facet : facets) {
-      if (facet instanceof UnboundFacet) {
-        UnboundFacet unboundFacet = (UnboundFacet) facet;
-        UnboundFacet.Binder binder = unboundFacet.binder();
-        if (filters != null) {
-          for (HelenusProperty prop : unboundFacet.getProperties()) {
-
-            Filter filter = filterMap.get(prop);
-            if (filter != null) {
-              Object[] postulates = filter.postulateValues();
-              for (Object p : postulates) {
-                binder.setValueForProperty(prop, p.toString());
-              }
-            }
-          }
-        }
-        if (binder.isBound()) {
-          boundFacets.add(binder.bind());
-        }
-      } else {
-        boundFacets.add(facet);
-      }
-    }
-    return boundFacets;
-  }
 }

src/main/java/net/helenus/core/operation/AbstractFilterOptionalOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,98 +15,97 @@
  */
 package net.helenus.core.operation;
 
-import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Map;
+
 import net.helenus.core.*;
-import net.helenus.mapping.HelenusProperty;
 
-public abstract class AbstractFilterOptionalOperation<
+public abstract class AbstractFilterOptionalOperation<E, O extends AbstractFilterOptionalOperation<E, O>>
-        E, O extends AbstractFilterOptionalOperation<E, O>>
+		extends
-    extends AbstractOptionalOperation<E, O> {
+			AbstractOptionalOperation<E, O> {
 
-  protected Map<HelenusProperty, Filter<?>> filters = null;
+	protected List<Filter<?>> filters = null;
-  protected List<Filter<?>> ifFilters = null;
+	protected List<Filter<?>> ifFilters = null;
 
-  public AbstractFilterOptionalOperation(AbstractSessionOperations sessionOperations) {
+	public AbstractFilterOptionalOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O where(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Operator operator, V val) {
+	public <V> O where(Getter<V> getter, Operator operator, V val) {
 
-    addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Filter<V> filter) {
+	public <V> O where(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O and(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Operator operator, V val) {
+	public <V> O and(Getter<V> getter, Operator operator, V val) {
 
-    addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Filter<V> filter) {
+	public <V> O and(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
 
-    addIfFilter(Filter.create(getter, postulate));
+		addIfFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
+	public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
 
-    addIfFilter(Filter.create(getter, operator, val));
+		addIfFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Filter<V> filter) {
+	public <V> O onlyIf(Filter<V> filter) {
 
-    addIfFilter(filter);
+		addIfFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  private void addFilter(Filter<?> filter) {
+	private void addFilter(Filter<?> filter) {
-    if (filters == null) {
+		if (filters == null) {
-      filters = new LinkedHashMap<HelenusProperty, Filter<?>>();
+			filters = new LinkedList<Filter<?>>();
-    }
+		}
-    filters.put(filter.getNode().getProperty(), filter);
+		filters.add(filter);
-  }
+	}
+
+	private void addIfFilter(Filter<?> filter) {
+		if (ifFilters == null) {
+			ifFilters = new LinkedList<Filter<?>>();
+		}
+		ifFilters.add(filter);
+	}
 
-  private void addIfFilter(Filter<?> filter) {
-    if (ifFilters == null) {
-      ifFilters = new LinkedList<Filter<?>>();
-    }
-    ifFilters.add(filter);
-  }
 }

src/main/java/net/helenus/core/operation/AbstractFilterStreamOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,98 +15,96 @@
  */
 package net.helenus.core.operation;
 
-import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Map;
+
 import net.helenus.core.*;
-import net.helenus.mapping.HelenusProperty;
 
-public abstract class AbstractFilterStreamOperation<
+public abstract class AbstractFilterStreamOperation<E, O extends AbstractFilterStreamOperation<E, O>>
-        E, O extends AbstractFilterStreamOperation<E, O>>
+		extends	AbstractStreamOperation<E, O> {
-    extends AbstractStreamOperation<E, O> {
 
-  protected Map<HelenusProperty, Filter<?>> filters = null;
+	protected List<Filter<?>> filters = null;
-  protected List<Filter<?>> ifFilters = null;
+	protected List<Filter<?>> ifFilters = null;
 
-  public AbstractFilterStreamOperation(AbstractSessionOperations sessionOperations) {
+	public AbstractFilterStreamOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O where(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Getter<V> getter, Operator operator, V val) {
+	public <V> O where(Getter<V> getter, Operator operator, V val) {
 
-    if (val != null) addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O where(Filter<V> filter) {
+	public <V> O where(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O and(Getter<V> getter, Postulate<V> postulate) {
 
-    addFilter(Filter.create(getter, postulate));
+		addFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Getter<V> getter, Operator operator, V val) {
+	public <V> O and(Getter<V> getter, Operator operator, V val) {
 
-    if (val != null) addFilter(Filter.create(getter, operator, val));
+		addFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O and(Filter<V> filter) {
+	public <V> O and(Filter<V> filter) {
 
-    addFilter(filter);
+		addFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
+	public <V> O onlyIf(Getter<V> getter, Postulate<V> postulate) {
 
-    addIfFilter(Filter.create(getter, postulate));
+		addIfFilter(Filter.create(getter, postulate));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
+	public <V> O onlyIf(Getter<V> getter, Operator operator, V val) {
 
-    if (val != null) addIfFilter(Filter.create(getter, operator, val));
+		addIfFilter(Filter.create(getter, operator, val));
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  public <V> O onlyIf(Filter<V> filter) {
+	public <V> O onlyIf(Filter<V> filter) {
 
-    addIfFilter(filter);
+		addIfFilter(filter);
 
-    return (O) this;
+		return (O) this;
-  }
+	}
 
-  private void addFilter(Filter<?> filter) {
+	private void addFilter(Filter<?> filter) {
-    if (filters == null) {
+		if (filters == null) {
-      filters = new LinkedHashMap<HelenusProperty, Filter<?>>();
+			filters = new LinkedList<Filter<?>>();
-    }
+		}
-    filters.put(filter.getNode().getProperty(), filter);
+		filters.add(filter);
-  }
+	}
+
+	private void addIfFilter(Filter<?> filter) {
+		if (ifFilters == null) {
+			ifFilters = new LinkedList<Filter<?>>();
+		}
+		ifFilters.add(filter);
+	}
 
-  private void addIfFilter(Filter<?> filter) {
-    if (ifFilters == null) {
-      ifFilters = new LinkedList<Filter<?>>();
-    }
-    ifFilters.add(filter);
-  }
 }

src/main/java/net/helenus/core/operation/AbstractOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,76 +15,106 @@
  */
 package net.helenus.core.operation;
 
-import com.codahale.metrics.Timer;
+import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.ResultSet;
-import java.util.concurrent.CompletableFuture;
+import com.datastax.driver.core.ResultSetFuture;
-import java.util.concurrent.CompletionException;
+import com.google.common.base.Function;
-import java.util.concurrent.TimeoutException;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+
 import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.UnitOfWork;
+import net.helenus.support.Fun;
+import net.helenus.support.Scala;
+import scala.concurrent.Future;
 
-public abstract class AbstractOperation<E, O extends AbstractOperation<E, O>>
+public abstract class AbstractOperation<E, O extends AbstractOperation<E, O>> extends AbstractStatementOperation<E, O> {
-    extends AbstractStatementOperation<E, O> {
 
-  public AbstractOperation(AbstractSessionOperations sessionOperations) {
+	public abstract E transform(ResultSet resultSet);
-    super(sessionOperations);
-  }
 
-  public abstract E transform(ResultSet resultSet);
+	public boolean cacheable() {
+		return false;
+	}
 
-  public PreparedOperation<E> prepare() {
+	public String getCacheKey() {
-    return new PreparedOperation<E>(prepareStatement(), this);
+		return "";
-  }
+	}
 
-  public E sync() throws TimeoutException {
+	public AbstractOperation(AbstractSessionOperations sessionOperations) {
-    final Timer.Context context = requestLatency.time();
+		super(sessionOperations);
-    try {
+	}
-      ResultSet resultSet =
-          this.execute(
-              sessionOps, null, queryExecutionTimeout, queryTimeoutUnits, showValues, false);
-      return transform(resultSet);
-    } finally {
-      context.stop();
-    }
-  }
 
-  public E sync(UnitOfWork uow) throws TimeoutException {
+	public PreparedOperation<E> prepare() {
-    if (uow == null) return sync();
+		return new PreparedOperation<E>(prepareStatement(), this);
+	}
 
-    final Timer.Context context = requestLatency.time();
+	public ListenableFuture<PreparedOperation<E>> prepareAsync() {
-    try {
-      ResultSet resultSet =
-          execute(sessionOps, uow, queryExecutionTimeout, queryTimeoutUnits, showValues, true);
-      E result = transform(resultSet);
-      return result;
-    } finally {
-      context.stop();
-    }
-  }
 
-  public CompletableFuture<E> async() {
+		final O _this = (O) this;
-    return CompletableFuture.<E>supplyAsync(
+
-        () -> {
+		return Futures.transform(prepareStatementAsync(), new Function<PreparedStatement, PreparedOperation<E>>() {
-          try {
+
-            return sync();
+			@Override
-          } catch (TimeoutException ex) {
+			public PreparedOperation<E> apply(PreparedStatement preparedStatement) {
-            throw new CompletionException(ex);
+				return new PreparedOperation<E>(preparedStatement, _this);
-          }
+			}
-        });
+
-  }
+		});
+
+	}
+
+	public Future<PreparedOperation<E>> prepareFuture() {
+		return Scala.asFuture(prepareAsync());
+	}
+
+	public E sync() {
+
+		ResultSet resultSet = sessionOps.executeAsync(options(buildStatement()), showValues).getUninterruptibly();
+		E result = transform(resultSet);
+		if (cacheable()) {
+			sessionOps.cache(getCacheKey(), result);
+		}
+		return result;
+
+	}
+
+	public ListenableFuture<E> async() {
+
+		ResultSetFuture resultSetFuture = sessionOps.executeAsync(options(buildStatement()), showValues);
+
+		ListenableFuture<E> future = Futures.transform(resultSetFuture, new Function<ResultSet, E>() {
+
+			@Override
+			public E apply(ResultSet resultSet) {
+				E result = transform(resultSet);
+				if (cacheable()) {
+					sessionOps.cache(getCacheKey(), result);
+				}
+				return transform(resultSet);
+			}
+
+		}, sessionOps.getExecutor());
+
+		return future;
+	}
+
+	public Future<E> future() {
+		return Scala.asFuture(async());
+	}
+
+	public <A> Future<Fun.Tuple2<E, A>> future(A a) {
+		return Scala.asFuture(async(), a);
+	}
+
+	public <A, B> Future<Fun.Tuple3<E, A, B>> future(A a, B b) {
+		return Scala.asFuture(async(), a, b);
+	}
+
+	public <A, B, C> Future<Fun.Tuple4<E, A, B, C>> future(A a, B b, C c) {
+		return Scala.asFuture(async(), a, b, c);
+	}
+
+	public <A, B, C, D> Future<Fun.Tuple5<E, A, B, C, D>> future(A a, B b, C c, D d) {
+		return Scala.asFuture(async(), a, b, c, d);
+	}
 
-  public CompletableFuture<E> async(UnitOfWork uow) {
-    if (uow == null) return async();
-    CompletableFuture<E> f =
-        CompletableFuture.<E>supplyAsync(
-            () -> {
-              try {
-                return sync();
-              } catch (TimeoutException ex) {
-                throw new CompletionException(ex);
-              }
-            });
-    uow.addFuture(f);
-    return f;
-  }
 }

src/main/java/net/helenus/core/operation/AbstractOptionalOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,240 +15,118 @@
  */
 package net.helenus.core.operation;
 
-import static net.helenus.core.HelenusSession.deleted;
+import java.util.Optional;
 
-import com.codahale.metrics.Timer;
 import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.ResultSet;
+import com.datastax.driver.core.ResultSetFuture;
 import com.google.common.base.Function;
-import com.google.common.base.Stopwatch;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
-import java.io.Serializable;
+
-import java.util.List;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionException;
-import java.util.concurrent.TimeoutException;
 import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.Helenus;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.CacheUtil;
-import net.helenus.core.cache.Facet;
-import net.helenus.mapping.MappingUtil;
 import net.helenus.support.Fun;
-import org.apache.commons.lang3.SerializationUtils;
+import net.helenus.support.Scala;
+import scala.Option;
+import scala.Some;
+import scala.concurrent.Future;
 
 public abstract class AbstractOptionalOperation<E, O extends AbstractOptionalOperation<E, O>>
-    extends AbstractStatementOperation<E, O> {
+		extends
+			AbstractStatementOperation<E, O> {
 
-  public AbstractOptionalOperation(AbstractSessionOperations sessionOperations) {
+	public AbstractOptionalOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public abstract Optional<E> transform(ResultSet resultSet);
+	public abstract Optional<E> transform(ResultSet resultSet);
 
-  public PreparedOptionalOperation<E> prepare() {
+	public PreparedOptionalOperation<E> prepare() {
-    return new PreparedOptionalOperation<E>(prepareStatement(), this);
+		return new PreparedOptionalOperation<E>(prepareStatement(), this);
-  }
+	}
 
-  public ListenableFuture<PreparedOptionalOperation<E>> prepareAsync() {
+	public ListenableFuture<PreparedOptionalOperation<E>> prepareAsync() {
-    final O _this = (O) this;
-    return Futures.transform(
-        prepareStatementAsync(),
-        new Function<PreparedStatement, PreparedOptionalOperation<E>>() {
-          @Override
-          public PreparedOptionalOperation<E> apply(PreparedStatement preparedStatement) {
-            return new PreparedOptionalOperation<E>(preparedStatement, _this);
-          }
-        });
-  }
 
-  public Optional<E> sync() throws TimeoutException {
+		final O _this = (O) this;
-    final Timer.Context context = requestLatency.time();
-    try {
-      Optional<E> result = Optional.empty();
-      E cacheResult = null;
-      boolean updateCache = isSessionCacheable() && !ignoreCache();
 
-      if (updateCache) {
+		return Futures.transform(prepareStatementAsync(),
-        List<Facet> facets = bindFacetValues();
+				new Function<PreparedStatement, PreparedOptionalOperation<E>>() {
-        if (facets != null && facets.size() > 0) {
-          if (facets.stream().filter(f -> !f.fixed()).distinct().count() > 0) {
-            String tableName = CacheUtil.schemaName(facets);
-            cacheResult = (E) sessionOps.checkCache(tableName, facets);
-            if (cacheResult != null) {
-              result = Optional.of(cacheResult);
-              updateCache = false;
-              sessionCacheHits.mark();
-              cacheHits.mark();
-            } else {
-              sessionCacheMiss.mark();
-              cacheMiss.mark();
-            }
-          }
-        } else {
-          //TODO(gburd): look in statement cache for results
-        }
-      }
 
-      if (!result.isPresent()) {
+					@Override
-        // Formulate the query and execute it against the Cassandra cluster.
+					public PreparedOptionalOperation<E> apply(PreparedStatement preparedStatement) {
-        ResultSet resultSet =
+						return new PreparedOptionalOperation<E>(preparedStatement, _this);
-            this.execute(
+					}
-                sessionOps,
-                null,
-                queryExecutionTimeout,
-                queryTimeoutUnits,
-                showValues,
-                isSessionCacheable());
 
-        // Transform the query result set into the desired shape.
+				});
-        result = transform(resultSet);
-      }
 
-      if (updateCache && result.isPresent()) {
+	}
-        E r = result.get();
-        Class<?> resultClass = r.getClass();
-        if (!(resultClass.getEnclosingClass() != null
-            && resultClass.getEnclosingClass() == Fun.class)) {
-          List<Facet> facets = getFacets();
-          if (facets != null && facets.size() > 1) {
-            sessionOps.updateCache(r, facets);
-          }
-        }
-      }
-      return result;
-    } finally {
-      context.stop();
-    }
-  }
 
-  public Optional<E> sync(UnitOfWork uow) throws TimeoutException {
+	public Future<PreparedOptionalOperation<E>> prepareFuture() {
-    if (uow == null) return sync();
+		return Scala.asFuture(prepareAsync());
+	}
 
-    final Timer.Context context = requestLatency.time();
+	public Optional<E> sync() {
-    try {
 
-      Optional<E> result = Optional.empty();
+		ResultSet resultSet = sessionOps.executeAsync(options(buildStatement()), showValues).getUninterruptibly();
-      E cachedResult = null;
-      final boolean updateCache;
 
-      if (!ignoreCache()) {
+		return transform(resultSet);
-        Stopwatch timer = Stopwatch.createStarted();
+	}
-        try {
-          List<Facet> facets = bindFacetValues();
-          if (facets != null && facets.size() > 0) {
-            if (facets.stream().filter(f -> !f.fixed()).distinct().count() > 0) {
-              cachedResult = checkCache(uow, facets);
-              if (cachedResult != null) {
-                updateCache = false;
-                result = Optional.of(cachedResult);
-                uowCacheHits.mark();
-                cacheHits.mark();
-                uow.recordCacheAndDatabaseOperationCount(1, 0);
-              } else {
-                uowCacheMiss.mark();
-                if (isSessionCacheable()) {
-                  String tableName = CacheUtil.schemaName(facets);
-                  cachedResult = (E) sessionOps.checkCache(tableName, facets);
-                  if (cachedResult != null) {
-                    Class<?> iface = MappingUtil.getMappingInterface(cachedResult);
-                    if (Helenus.entity(iface).isDraftable()) {
-                      result = Optional.of(cachedResult);
-                    } else {
-                      result =
-                          Optional.of(
-                              (E)
-                                  SerializationUtils.<Serializable>clone(
-                                      (Serializable) cachedResult));
-                    }
-                    updateCache = false;
-                    sessionCacheHits.mark();
-                    cacheHits.mark();
-                    uow.recordCacheAndDatabaseOperationCount(1, 0);
-                  } else {
-                    updateCache = true;
-                    sessionCacheMiss.mark();
-                    cacheMiss.mark();
-                    uow.recordCacheAndDatabaseOperationCount(-1, 0);
-                  }
-                } else {
-                  updateCache = false;
-                }
-              }
-            } else {
-              //TODO(gburd): look in statement cache for results
-              updateCache = false; //true;
-              cacheMiss.mark();
-              uow.recordCacheAndDatabaseOperationCount(-1, 0);
-            }
-          } else {
-            updateCache = false;
-          }
-        } finally {
-          timer.stop();
-          uow.addCacheLookupTime(timer);
-        }
-      } else {
-        updateCache = false;
-      }
 
-      // Check to see if we fetched the object from the cache
+	public ListenableFuture<Optional<E>> async() {
-      if (result.isPresent()) {
-        // If we fetched the `deleted` object then the result is null (really
-        // Optional.empty()).
-        if (result.get() == deleted) {
-          result = Optional.empty();
-        }
-      } else {
 
-        // Formulate the query and execute it against the Cassandra cluster.
+		ResultSetFuture resultSetFuture = sessionOps.executeAsync(options(buildStatement()), showValues);
-        ResultSet resultSet =
-            execute(sessionOps, uow, queryExecutionTimeout, queryTimeoutUnits, showValues, true);
 
-        // Transform the query result set into the desired shape.
+		ListenableFuture<Optional<E>> future = Futures.transform(resultSetFuture,
-        result = transform(resultSet);
+				new Function<ResultSet, Optional<E>>() {
-      }
 
-      // If we have a result, it wasn't from the UOW cache, and we're caching things
+					@Override
-      // then we need to put this result into the cache for future requests to find.
+					public Optional<E> apply(ResultSet resultSet) {
-      if (updateCache && result.isPresent()) {
+						return transform(resultSet);
-        E r = result.get();
+					}
-        if (!(r instanceof Fun) && r != deleted) {
-          cacheUpdate(uow, r, getFacets());
-        }
-      }
 
-      return result;
+				}, sessionOps.getExecutor());
-    } finally {
-      context.stop();
-    }
-  }
 
-  public CompletableFuture<Optional<E>> async() {
+		return future;
-    return CompletableFuture.<Optional<E>>supplyAsync(
+	}
-        () -> {
+
-          try {
+	public ListenableFuture<Option<E>> asyncForScala() {
-            return sync();
+
-          } catch (TimeoutException ex) {
+		ResultSetFuture resultSetFuture = sessionOps.executeAsync(options(buildStatement()), showValues);
-            throw new CompletionException(ex);
+
-          }
+		ListenableFuture<Option<E>> future = Futures.transform(resultSetFuture, new Function<ResultSet, Option<E>>() {
-        });
+
-  }
+			@Override
+			public Option<E> apply(ResultSet resultSet) {
+				Optional<E> optional = transform(resultSet);
+				if (optional.isPresent()) {
+					return new Some<E>(optional.get());
+				} else {
+					return Option.empty();
+				}
+			}
+
+		}, sessionOps.getExecutor());
+
+		return future;
+	}
+	public Future<Option<E>> future() {
+		return Scala.asFuture(asyncForScala());
+	}
+
+	public <A> Future<Fun.Tuple2<Option<E>, A>> future(A a) {
+		return Scala.asFuture(asyncForScala(), a);
+	}
+
+	public <A, B> Future<Fun.Tuple3<Option<E>, A, B>> future(A a, B b) {
+		return Scala.asFuture(asyncForScala(), a, b);
+	}
+
+	public <A, B, C> Future<Fun.Tuple4<Option<E>, A, B, C>> future(A a, B b, C c) {
+		return Scala.asFuture(asyncForScala(), a, b, c);
+	}
+
+	public <A, B, C, D> Future<Fun.Tuple5<Option<E>, A, B, C, D>> future(A a, B b, C c, D d) {
+		return Scala.asFuture(asyncForScala(), a, b, c, d);
+	}
 
-  public CompletableFuture<Optional<E>> async(UnitOfWork uow) {
-    if (uow == null) return async();
-    CompletableFuture<Optional<E>> f =
-        CompletableFuture.<Optional<E>>supplyAsync(
-            () -> {
-              try {
-                return sync();
-              } catch (TimeoutException ex) {
-                throw new CompletionException(ex);
-              }
-            });
-    uow.addFuture(f);
-    return f;
-  }
 }

src/main/java/net/helenus/core/operation/AbstractStatementOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,6 +15,9 @@
  */
 package net.helenus.core.operation;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.datastax.driver.core.ConsistencyLevel;
 import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.RegularStatement;
@@ -26,331 +28,211 @@ import com.datastax.driver.core.policies.FallthroughRetryPolicy;
 import com.datastax.driver.core.policies.RetryPolicy;
 import com.datastax.driver.core.querybuilder.BuiltStatement;
 import com.google.common.util.concurrent.ListenableFuture;
-import java.util.ArrayList;
+
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.concurrent.TimeUnit;
 import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.Facet;
-import net.helenus.core.cache.UnboundFacet;
-import net.helenus.core.reflect.MapExportable;
-import net.helenus.mapping.HelenusProperty;
-import net.helenus.mapping.value.BeanColumnValueProvider;
 import net.helenus.support.HelenusException;
+import net.helenus.support.Scala;
+import scala.concurrent.Future;
+
+public abstract class AbstractStatementOperation<E, O extends AbstractStatementOperation<E, O>> {
+
+	final Logger logger = LoggerFactory.getLogger(getClass());
+
+	protected final AbstractSessionOperations sessionOps;
+
+	public abstract Statement buildStatement();
+
+	protected boolean showValues = true;
+	private ConsistencyLevel consistencyLevel;
+	private ConsistencyLevel serialConsistencyLevel;
+	private RetryPolicy retryPolicy;
+	private boolean enableTracing = false;
+	private long[] defaultTimestamp = null;
+	private int[] fetchSize = null;
+
+	public AbstractStatementOperation(AbstractSessionOperations sessionOperations) {
+		this.sessionOps = sessionOperations;
+	}
+
+	public O showValues(boolean enabled) {
+		this.showValues = enabled;
+		return (O) this;
+	}
+
+	public O defaultTimestamp(long timestamp) {
+		this.defaultTimestamp = new long[1];
+		this.defaultTimestamp[0] = timestamp;
+		return (O) this;
+	}
+
+	public O retryPolicy(RetryPolicy retryPolicy) {
+		this.retryPolicy = retryPolicy;
+		return (O) this;
+	}
+
+	public O defaultRetryPolicy() {
+		this.retryPolicy = DefaultRetryPolicy.INSTANCE;
+		return (O) this;
+	}
+
+	public O downgradingConsistencyRetryPolicy() {
+		this.retryPolicy = DowngradingConsistencyRetryPolicy.INSTANCE;
+		return (O) this;
+	}
+
+	public O fallthroughRetryPolicy() {
+		this.retryPolicy = FallthroughRetryPolicy.INSTANCE;
+		return (O) this;
+	}
+
+	public O consistency(ConsistencyLevel level) {
+		this.consistencyLevel = level;
+		return (O) this;
+	}
+
+	public O consistencyAny() {
+		this.consistencyLevel = ConsistencyLevel.ANY;
+		return (O) this;
+	}
+
+	public O consistencyOne() {
+		this.consistencyLevel = ConsistencyLevel.ONE;
+		return (O) this;
+	}
+
+	public O consistencyQuorum() {
+		this.consistencyLevel = ConsistencyLevel.QUORUM;
+		return (O) this;
+	}
+
+	public O consistencyAll() {
+		this.consistencyLevel = ConsistencyLevel.ALL;
+		return (O) this;
+	}
+
+	public O serialConsistency(ConsistencyLevel level) {
+		this.serialConsistencyLevel = level;
+		return (O) this;
+	}
+
+	public O serialConsistencyAny() {
+		this.serialConsistencyLevel = ConsistencyLevel.ANY;
+		return (O) this;
+	}
+
+	public O serialConsistencyOne() {
+		this.serialConsistencyLevel = ConsistencyLevel.ONE;
+		return (O) this;
+	}
+
+	public O serialConsistencyQuorum() {
+		this.serialConsistencyLevel = ConsistencyLevel.QUORUM;
+		return (O) this;
+	}
+
+	public O serialConsistencyAll() {
+		this.serialConsistencyLevel = ConsistencyLevel.ALL;
+		return (O) this;
+	}
+
+	public O disableTracing() {
+		this.enableTracing = false;
+		return (O) this;
+	}
+
+	public O enableTracing() {
+		this.enableTracing = true;
+		return (O) this;
+	}
+
+	public O tracing(boolean enable) {
+		this.enableTracing = enable;
+		return (O) this;
+	}
+
+	public O fetchSize(int fetchSize) {
+		this.fetchSize = new int[1];
+		this.fetchSize[0] = fetchSize;
+		return (O) this;
+	}
+
+	protected Statement options(Statement statement) {
+
+		if (defaultTimestamp != null) {
+			statement.setDefaultTimestamp(defaultTimestamp[0]);
+		}
+
+		if (consistencyLevel != null) {
+			statement.setConsistencyLevel(consistencyLevel);
+		}
+
+		if (serialConsistencyLevel != null) {
+			statement.setSerialConsistencyLevel(serialConsistencyLevel);
+		}
+
+		if (retryPolicy != null) {
+			statement.setRetryPolicy(retryPolicy);
+		}
+
+		if (enableTracing) {
+			statement.enableTracing();
+		} else {
+			statement.disableTracing();
+		}
+
+		if (fetchSize != null) {
+			statement.setFetchSize(fetchSize[0]);
+		}
+
+		return statement;
+	}
+
+	public Statement statement() {
+		return buildStatement();
+	}
+
+	public String cql() {
+		Statement statement = buildStatement();
+		if (statement == null) return "";
+		if (statement instanceof BuiltStatement) {
+			BuiltStatement buildStatement = (BuiltStatement) statement;
+			return buildStatement.setForceNoValues(true).getQueryString();
+		} else {
+			return statement.toString();
+		}
+	}
+
+	public PreparedStatement prepareStatement() {
+
+		Statement statement = buildStatement();
+
+		if (statement instanceof RegularStatement) {
+
+			RegularStatement regularStatement = (RegularStatement) statement;
+
+			return sessionOps.prepare(regularStatement);
+		}
+
+		throw new HelenusException("only RegularStatements can be prepared");
+	}
+
+	public ListenableFuture<PreparedStatement> prepareStatementAsync() {
+
+		Statement statement = buildStatement();
+
+		if (statement instanceof RegularStatement) {
+
+			RegularStatement regularStatement = (RegularStatement) statement;
+
+			return sessionOps.prepareAsync(regularStatement);
+
+		}
+
+		throw new HelenusException("only RegularStatements can be prepared");
+	}
+
+	public Future<PreparedStatement> prepareStatementFuture() {
+		return Scala.asFuture(prepareStatementAsync());
+	}
 
-public abstract class AbstractStatementOperation<E, O extends AbstractStatementOperation<E, O>>
-    extends Operation<E> {
-  private boolean ignoreCache = false;
-  private ConsistencyLevel consistencyLevel;
-  private ConsistencyLevel serialConsistencyLevel;
-  private RetryPolicy retryPolicy;
-  private boolean enableTracing = false;
-  private long[] defaultTimestamp = null;
-  private int[] fetchSize = null;
-  protected boolean idempotent = false;
-
-  public AbstractStatementOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
-    this.consistencyLevel = sessionOperations.getDefaultConsistencyLevel();
-    this.idempotent = sessionOperations.getDefaultQueryIdempotency();
-  }
-
-  public abstract Statement buildStatement(boolean cached);
-
-  public O uncached(boolean enabled) {
-    ignoreCache = !enabled;
-    return (O) this;
-  }
-
-  public O uncached() {
-    ignoreCache = true;
-    return (O) this;
-  }
-
-  public O showValues(boolean enabled) {
-    this.showValues = enabled;
-    return (O) this;
-  }
-
-  public O defaultTimestamp(long timestamp) {
-    this.defaultTimestamp = new long[1];
-    this.defaultTimestamp[0] = timestamp;
-    return (O) this;
-  }
-
-  public O retryPolicy(RetryPolicy retryPolicy) {
-    this.retryPolicy = retryPolicy;
-    return (O) this;
-  }
-
-  public O defaultRetryPolicy() {
-    this.retryPolicy = DefaultRetryPolicy.INSTANCE;
-    return (O) this;
-  }
-
-  public O idempotent() {
-    this.idempotent = true;
-    return (O) this;
-  }
-
-  public O isIdempotent(boolean idempotent) {
-    this.idempotent = idempotent;
-    return (O) this;
-  }
-
-  public O downgradingConsistencyRetryPolicy() {
-    this.retryPolicy = DowngradingConsistencyRetryPolicy.INSTANCE;
-    return (O) this;
-  }
-
-  public O fallthroughRetryPolicy() {
-    this.retryPolicy = FallthroughRetryPolicy.INSTANCE;
-    return (O) this;
-  }
-
-  public O consistency(ConsistencyLevel level) {
-    this.consistencyLevel = level;
-    return (O) this;
-  }
-
-  public O consistencyAny() {
-    this.consistencyLevel = ConsistencyLevel.ANY;
-    return (O) this;
-  }
-
-  public O consistencyOne() {
-    this.consistencyLevel = ConsistencyLevel.ONE;
-    return (O) this;
-  }
-
-  public O consistencyQuorum() {
-    this.consistencyLevel = ConsistencyLevel.QUORUM;
-    return (O) this;
-  }
-
-  public O consistencyAll() {
-    this.consistencyLevel = ConsistencyLevel.ALL;
-    return (O) this;
-  }
-
-  public O consistencyLocalOne() {
-    this.consistencyLevel = ConsistencyLevel.LOCAL_ONE;
-    return (O) this;
-  }
-
-  public O consistencyLocalQuorum() {
-    this.consistencyLevel = ConsistencyLevel.LOCAL_QUORUM;
-    return (O) this;
-  }
-
-  public O consistencyEachQuorum() {
-    this.consistencyLevel = ConsistencyLevel.EACH_QUORUM;
-    return (O) this;
-  }
-
-  public O serialConsistency(ConsistencyLevel level) {
-    this.serialConsistencyLevel = level;
-    return (O) this;
-  }
-
-  public O serialConsistencyAny() {
-    this.serialConsistencyLevel = ConsistencyLevel.ANY;
-    return (O) this;
-  }
-
-  public O serialConsistencyOne() {
-    this.serialConsistencyLevel = ConsistencyLevel.ONE;
-    return (O) this;
-  }
-
-  public O serialConsistencyQuorum() {
-    this.serialConsistencyLevel = ConsistencyLevel.QUORUM;
-    return (O) this;
-  }
-
-  public O serialConsistencyAll() {
-    this.serialConsistencyLevel = ConsistencyLevel.ALL;
-    return (O) this;
-  }
-
-  public O serialConsistencyLocal() {
-    this.serialConsistencyLevel = ConsistencyLevel.LOCAL_SERIAL;
-    return (O) this;
-  }
-
-  public O serialConsistencyLocalQuorum() {
-    this.serialConsistencyLevel = ConsistencyLevel.LOCAL_QUORUM;
-    return (O) this;
-  }
-
-  public O disableTracing() {
-    this.enableTracing = false;
-    return (O) this;
-  }
-
-  public O enableTracing() {
-    this.enableTracing = true;
-    return (O) this;
-  }
-
-  public O tracing(boolean enable) {
-    this.enableTracing = enable;
-    return (O) this;
-  }
-
-  public O fetchSize(int fetchSize) {
-    this.fetchSize = new int[1];
-    this.fetchSize[0] = fetchSize;
-    return (O) this;
-  }
-
-  public O queryTimeoutMs(long ms) {
-    this.queryExecutionTimeout = ms;
-    this.queryTimeoutUnits = TimeUnit.MILLISECONDS;
-    return (O) this;
-  }
-
-  public O queryTimeout(long timeout, TimeUnit units) {
-    this.queryExecutionTimeout = timeout;
-    this.queryTimeoutUnits = units;
-    return (O) this;
-  }
-
-  public Statement options(Statement statement) {
-
-    if (defaultTimestamp != null) {
-      statement.setDefaultTimestamp(defaultTimestamp[0]);
-    }
-
-    if (consistencyLevel != null) {
-      statement.setConsistencyLevel(consistencyLevel);
-    }
-
-    if (serialConsistencyLevel != null) {
-      statement.setSerialConsistencyLevel(serialConsistencyLevel);
-    }
-
-    if (retryPolicy != null) {
-      statement.setRetryPolicy(retryPolicy);
-    }
-
-    if (enableTracing) {
-      statement.enableTracing();
-    } else {
-      statement.disableTracing();
-    }
-
-    if (fetchSize != null) {
-      statement.setFetchSize(fetchSize[0]);
-    }
-
-    if (isIdempotentOperation()) {
-      statement.setIdempotent(true);
-    }
-
-    return statement;
-  }
-
-  @Override
-  protected boolean isIdempotentOperation() {
-    return idempotent;
-  }
-
-  public Statement statement() {
-    return buildStatement(false);
-  }
-
-  public String cql() {
-    Statement statement = buildStatement(false);
-    if (statement == null) return "";
-    if (statement instanceof BuiltStatement) {
-      BuiltStatement buildStatement = (BuiltStatement) statement;
-      return buildStatement.setForceNoValues(true).getQueryString();
-    } else {
-      return statement.toString();
-    }
-  }
-
-  public PreparedStatement prepareStatement() {
-
-    Statement statement = buildStatement(true);
-
-    if (statement instanceof RegularStatement) {
-
-      RegularStatement regularStatement = (RegularStatement) statement;
-
-      return sessionOps.prepare(regularStatement);
-    }
-
-    throw new HelenusException("only RegularStatements can be prepared");
-  }
-
-  public ListenableFuture<PreparedStatement> prepareStatementAsync() {
-
-    Statement statement = buildStatement(true);
-
-    if (statement instanceof RegularStatement) {
-
-      RegularStatement regularStatement = (RegularStatement) statement;
-
-      return sessionOps.prepareAsync(regularStatement);
-    }
-
-    throw new HelenusException("only RegularStatements can be prepared");
-  }
-
-  protected boolean ignoreCache() {
-    return ignoreCache;
-  }
-
-  protected E checkCache(UnitOfWork uow, List<Facet> facets) {
-    E result = null;
-    Optional<Object> optionalCachedResult = Optional.empty();
-
-    if (!facets.isEmpty()) {
-      optionalCachedResult = uow.cacheLookup(facets);
-      if (optionalCachedResult.isPresent()) {
-        result = (E) optionalCachedResult.get();
-      }
-    }
-
-    return result;
-  }
-
-  protected Object cacheUpdate(UnitOfWork uow, E pojo, List<Facet> identifyingFacets) {
-    List<Facet> facets = new ArrayList<>();
-    Map<String, Object> valueMap =
-        pojo instanceof MapExportable ? ((MapExportable) pojo).toMap() : null;
-
-    for (Facet facet : identifyingFacets) {
-      if (facet instanceof UnboundFacet) {
-        UnboundFacet unboundFacet = (UnboundFacet) facet;
-        UnboundFacet.Binder binder = unboundFacet.binder();
-        for (HelenusProperty prop : unboundFacet.getProperties()) {
-          Object value;
-          if (valueMap == null) {
-            value = BeanColumnValueProvider.INSTANCE.getColumnValue(pojo, -1, prop, false);
-            if (value != null) {
-              binder.setValueForProperty(prop, value.toString());
-            }
-          } else {
-            value = valueMap.get(prop.getPropertyName());
-            if (value != null) {
-              binder.setValueForProperty(prop, value.toString());
-            }
-          }
-        }
-        if (binder.isBound()) {
-          facets.add(binder.bind());
-        }
-      } else {
-        facets.add(facet);
-      }
-    }
-
-    // Cache the value (pojo), the statement key, and the fully bound facets.
-    return uow.cacheUpdate(pojo, facets);
-  }
 }

src/main/java/net/helenus/core/operation/AbstractStreamOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,246 +15,123 @@
  */
 package net.helenus.core.operation;
 
-import static net.helenus.core.HelenusSession.deleted;
+import java.util.stream.Stream;
 
-import com.codahale.metrics.Timer;
 import com.datastax.driver.core.PreparedStatement;
 import com.datastax.driver.core.ResultSet;
+import com.datastax.driver.core.ResultSetFuture;
 import com.google.common.base.Function;
-import com.google.common.base.Stopwatch;
+import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
-import java.io.Serializable;
+
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionException;
-import java.util.concurrent.TimeoutException;
-import java.util.stream.Stream;
 import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.Helenus;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.CacheUtil;
-import net.helenus.core.cache.Facet;
-import net.helenus.mapping.MappingUtil;
 import net.helenus.support.Fun;
-import org.apache.commons.lang3.SerializationUtils;
+import net.helenus.support.Scala;
+import scala.concurrent.Future;
 
 public abstract class AbstractStreamOperation<E, O extends AbstractStreamOperation<E, O>>
-    extends AbstractStatementOperation<E, O> {
+		extends
+			AbstractStatementOperation<E, O> {
 
-  public AbstractStreamOperation(AbstractSessionOperations sessionOperations) {
+	public AbstractStreamOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public abstract Stream<E> transform(ResultSet resultSet);
+	public abstract Stream<E> transform(ResultSet resultSet);
 
-  public PreparedStreamOperation<E> prepare() {
+	public PreparedStreamOperation<E> prepare() {
-    return new PreparedStreamOperation<E>(prepareStatement(), this);
+		return new PreparedStreamOperation<E>(prepareStatement(), this);
-  }
+	}
 
-  public ListenableFuture<PreparedStreamOperation<E>> prepareAsync() {
+	public ListenableFuture<PreparedStreamOperation<E>> prepareAsync() {
-    final O _this = (O) this;
-    return Futures.transform(
-        prepareStatementAsync(),
-        new Function<PreparedStatement, PreparedStreamOperation<E>>() {
-          @Override
-          public PreparedStreamOperation<E> apply(PreparedStatement preparedStatement) {
-            return new PreparedStreamOperation<E>(preparedStatement, _this);
-          }
-        });
-  }
 
-  public Stream<E> sync() throws TimeoutException {
+		final O _this = (O) this;
-    final Timer.Context context = requestLatency.time();
-    try {
-      Stream<E> resultStream = null;
-      E cacheResult = null;
-      boolean updateCache = isSessionCacheable();
 
-      if (!ignoreCache() && isSessionCacheable()) {
+		return Futures.transform(prepareStatementAsync(),
-        List<Facet> facets = bindFacetValues();
+				new Function<PreparedStatement, PreparedStreamOperation<E>>() {
-        if (facets != null && facets.size() > 0) {
+
-          if (facets.stream().filter(f -> !f.fixed()).distinct().count() > 0) {
+					@Override
-            String tableName = CacheUtil.schemaName(facets);
+					public PreparedStreamOperation<E> apply(PreparedStatement preparedStatement) {
-            cacheResult = (E) sessionOps.checkCache(tableName, facets);
+						return new PreparedStreamOperation<E>(preparedStatement, _this);
-            if (cacheResult != null) {
+					}
-              resultStream = Stream.of(cacheResult);
+
-              updateCache = false;
+				});
-              sessionCacheHits.mark();
+
-              cacheHits.mark();
+	}
-            } else {
+
-              sessionCacheMiss.mark();
+	public Future<PreparedStreamOperation<E>> prepareFuture() {
-              cacheMiss.mark();
+		return Scala.asFuture(prepareAsync());
+	}
+
+	public Stream<E> sync() {
+	    ListenableFuture<Stream<E>> future = async();
+        Futures.addCallback(future, new FutureCallback<String>() {
+            @Override
+            public void onSuccess(String contents) {
+                //...process web site contents
             }
-          } else {
-            //TODO(gburd): look in statement cache for results
-          }
-        }
-      }
 
-      if (resultStream == null) {
+            @Override
-        // Formulate the query and execute it against the Cassandra cluster.
+            public void onFailure(Throwable throwable) {
-        ResultSet resultSet =
+                log.error("Exception in task", throwable);
-            this.execute(
-                sessionOps,
-                null,
-                queryExecutionTimeout,
-                queryTimeoutUnits,
-                showValues,
-                isSessionCacheable());
-
-        // Transform the query result set into the desired shape.
-        resultStream = transform(resultSet);
-      }
-
-      if (updateCache && resultStream != null) {
-        List<Facet> facets = getFacets();
-        if (facets != null && facets.size() > 1) {
-          List<E> again = new ArrayList<>();
-          resultStream.forEach(
-              result -> {
-                Class<?> resultClass = result.getClass();
-                if (!(resultClass.getEnclosingClass() != null
-                    && resultClass.getEnclosingClass() == Fun.class)) {
-                  sessionOps.updateCache(result, facets);
-                }
-                again.add(result);
-              });
-          resultStream = again.stream();
-        }
-      }
-      return resultStream;
-
-    } finally {
-      context.stop();
-    }
-  }
-
-  public Stream<E> sync(UnitOfWork uow) throws TimeoutException {
-    if (uow == null) return sync();
-
-    final Timer.Context context = requestLatency.time();
-    try {
-      Stream<E> resultStream = null;
-      E cachedResult = null;
-      final boolean updateCache;
-
-      if (!ignoreCache()) {
-        Stopwatch timer = Stopwatch.createStarted();
-        try {
-          List<Facet> facets = bindFacetValues();
-          if (facets != null && facets.size() > 0) {
-            if (facets.stream().filter(f -> !f.fixed()).distinct().count() > 0) {
-              cachedResult = checkCache(uow, facets);
-              if (cachedResult != null) {
-                updateCache = false;
-                resultStream = Stream.of(cachedResult);
-                uowCacheHits.mark();
-                cacheHits.mark();
-                uow.recordCacheAndDatabaseOperationCount(1, 0);
-              } else {
-                uowCacheMiss.mark();
-                if (isSessionCacheable()) {
-                  String tableName = CacheUtil.schemaName(facets);
-                  cachedResult = (E) sessionOps.checkCache(tableName, facets);
-                  if (cachedResult != null) {
-                    Class<?> iface = MappingUtil.getMappingInterface(cachedResult);
-                    E result = null;
-                    if (Helenus.entity(iface).isDraftable()) {
-                      result = cachedResult;
-                    } else {
-                      result =
-                          (E) SerializationUtils.<Serializable>clone((Serializable) cachedResult);
-                    }
-                    updateCache = false;
-                    resultStream = Stream.of(result);
-                    sessionCacheHits.mark();
-                    cacheHits.mark();
-                    uow.recordCacheAndDatabaseOperationCount(1, 0);
-                  } else {
-                    updateCache = true;
-                    sessionCacheMiss.mark();
-                    cacheMiss.mark();
-                    uow.recordCacheAndDatabaseOperationCount(-1, 0);
-                  }
-                } else {
-                  updateCache = false;
-                }
-              }
-            } else {
-              //TODO(gburd): look in statement cache for results
-              updateCache = false; //true;
-              cacheMiss.mark();
-              uow.recordCacheAndDatabaseOperationCount(-1, 0);
             }
-          } else {
-            updateCache = false;
-          }
-        } finally {
-          timer.stop();
-          uow.addCacheLookupTime(timer);
-        }
-      } else {
-        updateCache = false;
-      }
-
-      // Check to see if we fetched the object from the cache
-      if (resultStream == null) {
-        ResultSet resultSet =
-            execute(sessionOps, uow, queryExecutionTimeout, queryTimeoutUnits, showValues, true);
-        resultStream = transform(resultSet);
-      }
-
-      // If we have a result and we're caching then we need to put it into the cache
-      // for future requests to find.
-      if (resultStream != null) {
-        if (updateCache) {
-          List<E> again = new ArrayList<>();
-          List<Facet> facets = getFacets();
-          resultStream.forEach(
-              result -> {
-                Class<?> resultClass = result.getClass();
-                if (result != deleted
-                    && !(resultClass.getEnclosingClass() != null
-                        && resultClass.getEnclosingClass() == Fun.class)) {
-                  result = (E) cacheUpdate(uow, result, facets);
-                }
-                again.add(result);
-              });
-          resultStream = again.stream();
-        }
-      }
-
-      return resultStream;
-    } finally {
-      context.stop();
-    }
-  }
-
-  public CompletableFuture<Stream<E>> async() {
-    return CompletableFuture.<Stream<E>>supplyAsync(
-        () -> {
-          try {
-            return sync();
-          } catch (TimeoutException ex) {
-            throw new CompletionException(ex);
-          }
         });
-  }
+	}
+
+	public ListenableFuture<Stream<E>> async() {
+
+		ResultSetFuture resultSetFuture = sessionOps.executeAsync(options(buildStatement()), showValues);
+
+		ListenableFuture<Stream<E>> future = Futures.transform(resultSetFuture, new Function<ResultSet, Stream<E>>() {
+
+			@Override
+			public Stream<E> apply(ResultSet resultSet) {
+				return transform(resultSet);
+			}
+
+		}, sessionOps.getExecutor());
+
+		return future;
+	}
+
+	public ListenableFuture<scala.collection.immutable.Stream<E>> asyncForScala() {
+
+		ResultSetFuture resultSetFuture = sessionOps.executeAsync(options(buildStatement()), showValues);
+
+		ListenableFuture<scala.collection.immutable.Stream<E>> future = Futures.transform(resultSetFuture,
+				new Function<ResultSet, scala.collection.immutable.Stream<E>>() {
+
+					@Override
+					public scala.collection.immutable.Stream<E> apply(ResultSet resultSet) {
+						Stream<E> stream = transform(resultSet);
+						return scala.collection.JavaConversions.asScalaIterator(stream.iterator()).toStream();
+					}
+
+				}, sessionOps.getExecutor());
+
+		return future;
+	}
+
+	public Future<scala.collection.immutable.Stream<E>> future() {
+		return Scala.asFuture(asyncForScala());
+	}
+
+	public <A> Future<Fun.Tuple2<scala.collection.immutable.Stream<E>, A>> future(A a) {
+		return Scala.asFuture(asyncForScala(), a);
+	}
+
+	public <A, B> Future<Fun.Tuple3<scala.collection.immutable.Stream<E>, A, B>> future(A a, B b) {
+		return Scala.asFuture(asyncForScala(), a, b);
+	}
+
+	public <A, B, C> Future<Fun.Tuple4<scala.collection.immutable.Stream<E>, A, B, C>> future(A a, B b, C c) {
+		return Scala.asFuture(asyncForScala(), a, b, c);
+	}
+
+	public <A, B, C, D> Future<Fun.Tuple5<scala.collection.immutable.Stream<E>, A, B, C, D>> future(A a, B b, C c,
+			D d) {
+		return Scala.asFuture(asyncForScala(), a, b, c, d);
+	}
 
-  public CompletableFuture<Stream<E>> async(UnitOfWork uow) {
-    if (uow == null) return async();
-    CompletableFuture<Stream<E>> f =
-        CompletableFuture.<Stream<E>>supplyAsync(
-            () -> {
-              try {
-                return sync();
-              } catch (TimeoutException ex) {
-                throw new CompletionException(ex);
-              }
-            });
-    uow.addFuture(f);
-    return f;
-  }
 }

src/main/java/net/helenus/core/operation/BatchOperation.java

@@ -1,140 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.operation;
-
-import com.codahale.metrics.Timer;
-import com.datastax.driver.core.AtomicMonotonicTimestampGenerator;
-import com.datastax.driver.core.BatchStatement;
-import com.datastax.driver.core.ResultSet;
-import com.datastax.driver.core.TimestampGenerator;
-import com.google.common.base.Stopwatch;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.TimeoutException;
-import java.util.stream.Collectors;
-import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.UnitOfWork;
-import net.helenus.support.HelenusException;
-
-public class BatchOperation extends Operation<Long> {
-  //TODO(gburd): find the way to get the driver's timestamp generator
-  private static final TimestampGenerator timestampGenerator =
-      new AtomicMonotonicTimestampGenerator();
-
-  private final BatchStatement batch;
-  private List<AbstractOperation<?, ?>> operations = new ArrayList<AbstractOperation<?, ?>>();
-  private boolean logged = true;
-
-  public BatchOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
-    batch = new BatchStatement();
-  }
-
-  public void add(AbstractOperation<?, ?> operation) {
-    operations.add(operation);
-  }
-
-  @Override
-  public BatchStatement buildStatement(boolean cached) {
-    batch.addAll(
-        operations.stream().map(o -> o.buildStatement(cached)).collect(Collectors.toList()));
-    batch.setConsistencyLevel(sessionOps.getDefaultConsistencyLevel());
-    return batch;
-  }
-
-  public BatchOperation logged() {
-    logged = true;
-    return this;
-  }
-
-  public BatchOperation setLogged(boolean logStatements) {
-    logged = logStatements;
-    return this;
-  }
-
-  public Long sync() {
-    if (operations.size() == 0) return 0L;
-    final Timer.Context context = requestLatency.time();
-    try {
-        batch.setDefaultTimestamp(timestampGenerator.next());
-        ResultSet resultSet =
-                this.execute(
-                        sessionOps, null, queryExecutionTimeout, queryTimeoutUnits, showValues, false);
-        if (!resultSet.wasApplied()) {
-            throw new HelenusException("Failed to apply batch.");
-        }
-    } catch (TimeoutException e) {
-        throw new HelenusException(e);
-    } finally {
-      context.stop();
-    }
-    return batch.getDefaultTimestamp();
-  }
-
-  public Long sync(UnitOfWork uow) {
-    if (operations.size() == 0) return 0L;
-    if (uow == null) return sync();
-
-    final Timer.Context context = requestLatency.time();
-    final Stopwatch timer = Stopwatch.createStarted();
-    try {
-        uow.recordCacheAndDatabaseOperationCount(0, 1);
-        batch.setDefaultTimestamp(timestampGenerator.next());
-        ResultSet resultSet =
-                this.execute(
-                        sessionOps, uow, queryExecutionTimeout, queryTimeoutUnits, showValues, false);
-        if (!resultSet.wasApplied()) {
-            throw new HelenusException("Failed to apply batch.");
-        }
-    } catch (TimeoutException e) {
-        throw new HelenusException(e);
-    } finally {
-      context.stop();
-      timer.stop();
-    }
-    uow.addDatabaseTime("Cassandra", timer);
-    return batch.getDefaultTimestamp();
-  }
-
-  public void addAll(BatchOperation batch) {
-    batch.operations.forEach(o -> this.operations.add(o));
-  }
-
-  public String toString() {
-    return toString(true); //TODO(gburd): sessionOps.showQueryValues()
-  }
-
-  public String toString(boolean showValues) {
-    StringBuilder s = new StringBuilder();
-    s.append("BEGIN ");
-    if (!logged) {
-      s.append("UNLOGGED ");
-    }
-    s.append("BATCH ");
-
-    if (batch.getDefaultTimestamp() > -9223372036854775808L) {
-      s.append("USING TIMESTAMP ").append(String.valueOf(batch.getDefaultTimestamp())).append(" ");
-    }
-    s.append(
-        operations
-            .stream()
-            .map(o -> Operation.queryString(o.buildStatement(showValues), showValues))
-            .collect(Collectors.joining(" ")));
-    s.append(" APPLY BATCH;");
-    return s.toString();
-  }
-}

src/main/java/net/helenus/core/operation/BoundOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -22,27 +21,23 @@ import com.datastax.driver.core.Statement;
 
 public final class BoundOperation<E> extends AbstractOperation<E, BoundOperation<E>> {
 
-  private final BoundStatement boundStatement;
+	private final BoundStatement boundStatement;
-  private final AbstractOperation<E, ?> delegate;
+	private final AbstractOperation<E, ?> delegate;
 
-  public BoundOperation(BoundStatement boundStatement, AbstractOperation<E, ?> operation) {
+	public BoundOperation(BoundStatement boundStatement, AbstractOperation<E, ?> operation) {
-    super(operation.sessionOps);
+		super(operation.sessionOps);
-    this.boundStatement = boundStatement;
+		this.boundStatement = boundStatement;
-    this.delegate = operation;
+		this.delegate = operation;
-  }
+	}
 
-  @Override
+	@Override
-  public E transform(ResultSet resultSet) {
+	public E transform(ResultSet resultSet) {
-    return delegate.transform(resultSet);
+		return delegate.transform(resultSet);
-  }
+	}
 
-  @Override
+	@Override
-  public Statement buildStatement(boolean cached) {
+	public Statement buildStatement() {
-    return boundStatement;
+		return boundStatement;
-  }
+	}
 
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
 }

src/main/java/net/helenus/core/operation/BoundOptionalOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,36 +15,31 @@
  */
 package net.helenus.core.operation;
 
+import java.util.Optional;
+
 import com.datastax.driver.core.BoundStatement;
 import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.Statement;
-import java.util.Optional;
 
-public final class BoundOptionalOperation<E>
+public final class BoundOptionalOperation<E> extends AbstractOptionalOperation<E, BoundOptionalOperation<E>> {
-    extends AbstractOptionalOperation<E, BoundOptionalOperation<E>> {
 
-  private final BoundStatement boundStatement;
+	private final BoundStatement boundStatement;
-  private final AbstractOptionalOperation<E, ?> delegate;
+	private final AbstractOptionalOperation<E, ?> delegate;
 
-  public BoundOptionalOperation(
+	public BoundOptionalOperation(BoundStatement boundStatement, AbstractOptionalOperation<E, ?> operation) {
-      BoundStatement boundStatement, AbstractOptionalOperation<E, ?> operation) {
+		super(operation.sessionOps);
-    super(operation.sessionOps);
+		this.boundStatement = boundStatement;
-    this.boundStatement = boundStatement;
+		this.delegate = operation;
-    this.delegate = operation;
+	}
-  }
 
-  @Override
+	@Override
-  public Optional<E> transform(ResultSet resultSet) {
+	public Optional<E> transform(ResultSet resultSet) {
-    return delegate.transform(resultSet);
+		return delegate.transform(resultSet);
-  }
+	}
 
-  @Override
+	@Override
-  public Statement buildStatement(boolean cached) {
+	public Statement buildStatement() {
-    return boundStatement;
+		return boundStatement;
-  }
+	}
 
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
 }

src/main/java/net/helenus/core/operation/BoundStreamOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,43 +15,31 @@
  */
 package net.helenus.core.operation;
 
+import java.util.stream.Stream;
+
 import com.datastax.driver.core.BoundStatement;
 import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.Statement;
-import java.util.List;
-import java.util.stream.Stream;
-import net.helenus.core.cache.Facet;
 
-public final class BoundStreamOperation<E>
+public final class BoundStreamOperation<E> extends AbstractStreamOperation<E, BoundStreamOperation<E>> {
-    extends AbstractStreamOperation<E, BoundStreamOperation<E>> {
 
-  private final BoundStatement boundStatement;
+	private final BoundStatement boundStatement;
-  private final AbstractStreamOperation<E, ?> delegate;
+	private final AbstractStreamOperation<E, ?> delegate;
 
-  public BoundStreamOperation(
+	public BoundStreamOperation(BoundStatement boundStatement, AbstractStreamOperation<E, ?> operation) {
-      BoundStatement boundStatement, AbstractStreamOperation<E, ?> operation) {
+		super(operation.sessionOps);
-    super(operation.sessionOps);
+		this.boundStatement = boundStatement;
-    this.boundStatement = boundStatement;
+		this.delegate = operation;
-    this.delegate = operation;
+	}
-  }
 
-  @Override
+	@Override
-  public List<Facet> bindFacetValues() {
+	public Stream<E> transform(ResultSet resultSet) {
-    return delegate.bindFacetValues();
+		return delegate.transform(resultSet);
-  }
+	}
 
-  @Override
+	@Override
-  public Stream<E> transform(ResultSet resultSet) {
+	public Statement buildStatement() {
-    return delegate.transform(resultSet);
+		return boundStatement;
-  }
+	}
 
-  @Override
-  public Statement buildStatement(boolean cached) {
-    return boundStatement;
-  }
-
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
 }

src/main/java/net/helenus/core/operation/CountOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -21,6 +20,7 @@ import com.datastax.driver.core.querybuilder.BuiltStatement;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
 import com.datastax.driver.core.querybuilder.Select;
 import com.datastax.driver.core.querybuilder.Select.Where;
+
 import net.helenus.core.AbstractSessionOperations;
 import net.helenus.core.Filter;
 import net.helenus.core.reflect.HelenusPropertyNode;
@@ -29,57 +29,54 @@ import net.helenus.support.HelenusMappingException;
 
 public final class CountOperation extends AbstractFilterOperation<Long, CountOperation> {
 
-  private HelenusEntity entity;
+	private HelenusEntity entity;
 
-  public CountOperation(AbstractSessionOperations sessionOperations) {
+	public CountOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public CountOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
+	public CountOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
-    super(sessionOperations);
+		super(sessionOperations);
-    this.entity = entity;
+		this.entity = entity;
-    //TODO(gburd): cache SELECT COUNT results within the scope of a UOW
+	}
-  }
 
-  @Override
+	@Override
-  public BuiltStatement buildStatement(boolean cached) {
+	public BuiltStatement buildStatement() {
 
-    if (filters != null && !filters.isEmpty()) {
+		if (filters != null && !filters.isEmpty()) {
-      filters.forEach(f -> addPropertyNode(f.getNode()));
+			filters.forEach(f -> addPropertyNode(f.getNode()));
-    }
+		}
 
-    if (entity == null) {
+		if (entity == null) {
-      throw new HelenusMappingException("unknown entity");
+			throw new HelenusMappingException("unknown entity");
-    }
+		}
 
-    Select select = QueryBuilder.select().countAll().from(entity.getName().toCql());
+		Select select = QueryBuilder.select().countAll().from(entity.getName().toCql());
 
-    if (filters != null && !filters.isEmpty()) {
+		if (filters != null && !filters.isEmpty()) {
 
-      Where where = select.where();
+			Where where = select.where();
 
-      for (Filter<?> filter : filters) {
+			for (Filter<?> filter : filters) {
-        where.and(filter.getClause(sessionOps.getValuePreparer()));
+				where.and(filter.getClause(sessionOps.getValuePreparer()));
-      }
+			}
-    }
+		}
 
-    return select;
+		return select;
-  }
+	}
 
-  @Override
+	@Override
-  public Long transform(ResultSet resultSet) {
+	public Long transform(ResultSet resultSet) {
-    return resultSet.one().getLong(0);
+		return resultSet.one().getLong(0);
-  }
+	}
+
+	private void addPropertyNode(HelenusPropertyNode p) {
+		if (entity == null) {
+			entity = p.getEntity();
+		} else if (entity != p.getEntity()) {
+			throw new HelenusMappingException("you can count columns only in single entity "
+					+ entity.getMappingInterface() + " or " + p.getEntity().getMappingInterface());
+		}
+	}
 
-  private void addPropertyNode(HelenusPropertyNode p) {
-    if (entity == null) {
-      entity = p.getEntity();
-    } else if (entity != p.getEntity()) {
-      throw new HelenusMappingException(
-          "you can count columns only in single entity "
-              + entity.getMappingInterface()
-              + " or "
-              + p.getEntity().getMappingInterface());
-    }
-  }
 }

src/main/java/net/helenus/core/operation/DeleteOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -21,155 +20,106 @@ import com.datastax.driver.core.querybuilder.BuiltStatement;
 import com.datastax.driver.core.querybuilder.Delete;
 import com.datastax.driver.core.querybuilder.Delete.Where;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
-import java.util.List;
+
-import java.util.concurrent.TimeoutException;
 import net.helenus.core.AbstractSessionOperations;
 import net.helenus.core.Filter;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.Facet;
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.HelenusEntity;
-import net.helenus.support.HelenusException;
 import net.helenus.support.HelenusMappingException;
 
 public final class DeleteOperation extends AbstractFilterOperation<ResultSet, DeleteOperation> {
 
-  private HelenusEntity entity;
+	private HelenusEntity entity;
 
-  private boolean ifExists = false;
+	private boolean ifExists = false;
 
-  private int[] ttl;
+	private int[] ttl;
-  private long[] timestamp;
+	private long[] timestamp;
 
-  public DeleteOperation(AbstractSessionOperations sessionOperations) {
+	public DeleteOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
+		super(sessionOperations);
-  }
+	}
 
-  public DeleteOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
+	public DeleteOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
-    super(sessionOperations);
+		super(sessionOperations);
 
-    this.entity = entity;
+		this.entity = entity;
-  }
+	}
 
-  @Override
+	@Override
-  public BuiltStatement buildStatement(boolean cached) {
+	public BuiltStatement buildStatement() {
 
-    if (filters != null && !filters.isEmpty()) {
+		if (filters != null && !filters.isEmpty()) {
-      filters.forEach(f -> addPropertyNode(f.getNode()));
+			filters.forEach(f -> addPropertyNode(f.getNode()));
-    }
+		}
 
-    if (entity == null) {
+		if (entity == null) {
-      throw new HelenusMappingException("unknown entity");
+			throw new HelenusMappingException("unknown entity");
-    }
+		}
 
-    if (filters != null && !filters.isEmpty()) {
+		if (filters != null && !filters.isEmpty()) {
 
-      Delete delete = QueryBuilder.delete().from(entity.getName().toCql());
+			Delete delete = QueryBuilder.delete().from(entity.getName().toCql());
 
-      if (this.ifExists) {
+			if (this.ifExists) {
-        delete.ifExists();
+				delete.ifExists();
-      }
+			}
 
-      Where where = delete.where();
+			Where where = delete.where();
 
-      for (Filter<?> filter : filters) {
+			for (Filter<?> filter : filters) {
-        where.and(filter.getClause(sessionOps.getValuePreparer()));
+				where.and(filter.getClause(sessionOps.getValuePreparer()));
-      }
+			}
 
-      if (ifFilters != null && !ifFilters.isEmpty()) {
+			if (ifFilters != null && !ifFilters.isEmpty()) {
 
-        for (Filter<?> filter : ifFilters) {
+				for (Filter<?> filter : ifFilters) {
-          delete.onlyIf(filter.getClause(sessionOps.getValuePreparer()));
+					delete.onlyIf(filter.getClause(sessionOps.getValuePreparer()));
-        }
+				}
-      }
+			}
 
-      if (this.ttl != null) {
+			if (this.ttl != null) {
-        delete.using(QueryBuilder.ttl(this.ttl[0]));
+				delete.using(QueryBuilder.ttl(this.ttl[0]));
-      }
+			}
-      if (this.timestamp != null) {
+			if (this.timestamp != null) {
-        delete.using(QueryBuilder.timestamp(this.timestamp[0]));
+				delete.using(QueryBuilder.timestamp(this.timestamp[0]));
-      }
+			}
 
-      return delete;
+			return delete;
 
-    } else {
+		} else {
-      return QueryBuilder.truncate(entity.getName().toCql());
+			return QueryBuilder.truncate(entity.getName().toCql());
-    }
+		}
-  }
+	}
 
-  @Override
+	@Override
-  public ResultSet transform(ResultSet resultSet) {
+	public ResultSet transform(ResultSet resultSet) {
-    return resultSet;
+		return resultSet;
-  }
+	}
 
-  public DeleteOperation ifExists() {
+	public DeleteOperation ifExists() {
-    this.ifExists = true;
+		this.ifExists = true;
-    return this;
+		return this;
-  }
+	}
 
-  public DeleteOperation usingTtl(int ttl) {
+	public DeleteOperation usingTtl(int ttl) {
-    this.ttl = new int[1];
+		this.ttl = new int[1];
-    this.ttl[0] = ttl;
+		this.ttl[0] = ttl;
-    return this;
+		return this;
-  }
+	}
 
-  public DeleteOperation usingTimestamp(long timestamp) {
+	public DeleteOperation usingTimestamp(long timestamp) {
-    this.timestamp = new long[1];
+		this.timestamp = new long[1];
-    this.timestamp[0] = timestamp;
+		this.timestamp[0] = timestamp;
-    return this;
+		return this;
-  }
+	}
 
-  private void addPropertyNode(HelenusPropertyNode p) {
+	private void addPropertyNode(HelenusPropertyNode p) {
-    if (entity == null) {
+		if (entity == null) {
-      entity = p.getEntity();
+			entity = p.getEntity();
-    } else if (entity != p.getEntity()) {
+		} else if (entity != p.getEntity()) {
-      throw new HelenusMappingException(
+			throw new HelenusMappingException("you can delete rows only in single entity "
-          "you can delete rows only in single entity "
+					+ entity.getMappingInterface() + " or " + p.getEntity().getMappingInterface());
-              + entity.getMappingInterface()
+		}
-              + " or "
+	}
-              + p.getEntity().getMappingInterface());
-    }
-  }
-
-  public List<Facet> bindFacetValues() {
-    return bindFacetValues(getFacets());
-  }
-
-  protected boolean isIdempotentOperation() {
-    return true;
-  }
-
-  @Override
-  public ResultSet sync() throws TimeoutException {
-    ResultSet result = super.sync();
-    if (entity.isCacheable()) {
-      sessionOps.cacheEvict(bindFacetValues());
-    }
-    return result;
-  }
-
-  @Override
-  public ResultSet sync(UnitOfWork uow) throws TimeoutException {
-    if (uow == null) {
-      return sync();
-    }
-    ResultSet result = super.sync(uow);
-    uow.cacheEvict(bindFacetValues());
-    return result;
-  }
-
-  public ResultSet batch(UnitOfWork uow) throws TimeoutException {
-    if (uow == null) {
-      throw new HelenusException("UnitOfWork cannot be null when batching operations.");
-    }
-
-    uow.cacheEvict(bindFacetValues());
-    uow.batch(this);
-    return null;
-  }
-
-  @Override
-  public List<Facet> getFacets() {
-    return entity.getFacets();
-  }
 }

src/main/java/net/helenus/core/operation/InsertOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,409 +15,154 @@
  */
 package net.helenus.core.operation;
 
+import java.util.*;
+
 import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.querybuilder.BuiltStatement;
 import com.datastax.driver.core.querybuilder.Insert;
 import com.datastax.driver.core.querybuilder.QueryBuilder;
-import java.util.*;
+
-import java.util.concurrent.TimeoutException;
+import com.google.common.base.Predicates;
-import java.util.function.Function;
+import com.google.common.collect.Lists;
-import java.util.stream.Collectors;
+import com.google.common.collect.Maps;
 import net.helenus.core.AbstractSessionOperations;
 import net.helenus.core.Getter;
-import net.helenus.core.Helenus;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.CacheUtil;
-import net.helenus.core.cache.Facet;
-import net.helenus.core.cache.UnboundFacet;
-import net.helenus.core.reflect.DefaultPrimitiveTypes;
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.core.reflect.MapExportable;
+import net.helenus.mapping.ColumnType;
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.mapping.HelenusProperty;
 import net.helenus.mapping.MappingUtil;
 import net.helenus.mapping.value.BeanColumnValueProvider;
 import net.helenus.support.Fun;
-import net.helenus.support.HelenusException;
 import net.helenus.support.HelenusMappingException;
 
-public final class InsertOperation<T> extends AbstractOperation<T, InsertOperation<T>> {
+public final class InsertOperation extends AbstractOperation<ResultSet, InsertOperation> {
 
-  private final List<Fun.Tuple2<HelenusPropertyNode, Object>> values =
+	private HelenusEntity entity;
-      new ArrayList<Fun.Tuple2<HelenusPropertyNode, Object>>();
-  private final T pojo;
-  private final Class<?> resultType;
-  private final Set<String> readSet;
-  private HelenusEntity entity;
-  private boolean ifNotExists;
 
-  private int[] ttl;
+	private final List<Fun.Tuple2<HelenusPropertyNode, Object>> values = new ArrayList<Fun.Tuple2<HelenusPropertyNode, Object>>();
-  private long[] timestamp;
+	private boolean ifNotExists;
-  private long writeTime = 0L;
 
-  public InsertOperation(AbstractSessionOperations sessionOperations, boolean ifNotExists) {
+	private int[] ttl;
-    super(sessionOperations);
+	private long[] timestamp;
 
-    this.pojo = null;
+	public InsertOperation(AbstractSessionOperations sessionOperations, boolean ifNotExists) {
-    this.readSet = null;
+		super(sessionOperations);
-    this.ifNotExists = ifNotExists;
-    this.resultType = ResultSet.class;
-  }
 
-  public InsertOperation(
+		this.ifNotExists = ifNotExists;
-      AbstractSessionOperations sessionOperations,
+	}
-      HelenusEntity entity,
-      Class<?> resultType,
-      boolean ifNotExists) {
-    super(sessionOperations);
 
-    this.pojo = null;
+	public InsertOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity, Object pojo,
-    this.readSet = null;
+			boolean ifNotExists) {
-    this.ifNotExists = ifNotExists;
+		super(sessionOperations);
-    this.resultType = resultType;
-    this.entity = entity;
-  }
 
-  public InsertOperation(
+		this.entity = entity;
-      AbstractSessionOperations sessionOperations, Class<?> resultType, boolean ifNotExists) {
+		this.ifNotExists = ifNotExists;
-    super(sessionOperations);
+        Set<String> keys = (pojo instanceof MapExportable) ? ((MapExportable)pojo).toMap().keySet() : null;
+        Collection<HelenusProperty> properties = entity.getOrderedProperties();
 
-    this.pojo = null;
+        for (HelenusProperty prop : properties) {
-    this.readSet = null;
-    this.ifNotExists = ifNotExists;
-    this.resultType = resultType;
-  }
 
-  public InsertOperation(
+            // Skip properties that are not in the map of the pojo we're storing.  This creates a path
-      AbstractSessionOperations sessionOperations,
+            // for entity instances to be {in,up}serted without including all columns in the INSERT statement.
-      HelenusEntity entity,
+		    if (keys == null || keys.contains(prop.getPropertyName())) {
-      T pojo,
-      Set<String> mutations,
-      Set<String> read,
-      boolean ifNotExists) {
-    super(sessionOperations);
 
-    this.pojo = pojo;
+                Object value = BeanColumnValueProvider.INSTANCE.getColumnValue(pojo, -1, prop);
-    this.readSet = read;
+                value = sessionOps.getValuePreparer().prepareColumnValue(value, prop);
-    this.entity = entity;
-    this.ifNotExists = ifNotExists;
-    this.resultType = entity.getMappingInterface();
 
-    Collection<HelenusProperty> properties = entity.getOrderedProperties();
+                if (value != null) {
-    Set<String> keys = (mutations == null) ? null : mutations;
+                    HelenusPropertyNode node = new HelenusPropertyNode(prop, Optional.empty());
+                    values.add(Fun.Tuple2.of(node, value));
+                }
 
-    for (HelenusProperty prop : properties) {
-      boolean addProp = false;
-
-      switch (prop.getColumnType()) {
-        case PARTITION_KEY:
-        case CLUSTERING_COLUMN:
-          addProp = true;
-          break;
-        default:
-          addProp = (keys == null || keys.contains(prop.getPropertyName()));
-      }
-
-      if (addProp) {
-        Object value = BeanColumnValueProvider.INSTANCE.getColumnValue(pojo, -1, prop);
-        value = sessionOps.getValuePreparer().prepareColumnValue(value, prop);
-
-        if (value != null) {
-          HelenusPropertyNode node = new HelenusPropertyNode(prop, Optional.empty());
-          values.add(Fun.Tuple2.of(node, value));
-        }
-      }
-    }
-  }
-
-  public InsertOperation<T> ifNotExists() {
-    this.ifNotExists = true;
-    return this;
-  }
-
-  public InsertOperation<T> ifNotExists(boolean enable) {
-    this.ifNotExists = enable;
-    return this;
-  }
-
-  public <V> InsertOperation<T> value(Getter<V> getter, V val) {
-
-    Objects.requireNonNull(getter, "getter is empty");
-
-    if (val != null) {
-      HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
-      Object value = sessionOps.getValuePreparer().prepareColumnValue(val, node.getProperty());
-
-      if (value != null) {
-        values.add(Fun.Tuple2.of(node, value));
-      }
-    }
-
-    return this;
-  }
-
-  @Override
-  public BuiltStatement buildStatement(boolean cached) {
-    List<HelenusEntity> entities =
-        values
-            .stream()
-            .map(t -> t._1.getProperty().getEntity())
-            .distinct()
-            .collect(Collectors.toList());
-    if (entities.size() != 1) {
-      throw new HelenusMappingException(
-          "you can insert only single entity at a time, found: "
-              + entities
-                  .stream()
-                  .map(e -> e.getMappingInterface().toString())
-                  .collect(Collectors.joining(", ")));
-    }
-    HelenusEntity entity = entities.get(0);
-    if (this.entity != null) {
-      if (this.entity != entity) {
-        throw new HelenusMappingException(
-            "you can insert only single entity at a time, found: "
-                + this.entity.getMappingInterface().toString()
-                + ", "
-                + entity.getMappingInterface().toString());
-      }
-    } else {
-      this.entity = entity;
-    }
-
-    if (values.isEmpty()) return null;
-
-    if (entity == null) {
-      throw new HelenusMappingException("unknown entity");
-    }
-
-    Insert insert = QueryBuilder.insertInto(entity.getName().toCql());
-
-    if (ifNotExists) {
-      insert.ifNotExists();
-    }
-
-    values.forEach(
-        t -> {
-          insert.value(t._1.getColumnName(), t._2);
-        });
-
-    //TODO(gburd): IF NOT EXISTS when @Constraints.Relationship is 1:1 or 1:m
-
-    if (this.ttl != null) {
-      insert.using(QueryBuilder.ttl(this.ttl[0]));
-    }
-    if (this.timestamp != null) {
-      insert.using(QueryBuilder.timestamp(this.timestamp[0]));
-    }
-
-    return insert;
-  }
-
-  private T newInstance(Class<?> iface) {
-    if (values.size() > 0) {
-      boolean immutable = entity.isDraftable();
-      Collection<HelenusProperty> properties = entity.getOrderedProperties();
-      Map<String, Object> backingMap = new HashMap<String, Object>(properties.size());
-
-      // First, add all the inserted values into our new map.
-      values.forEach(t -> backingMap.put(t._1.getProperty().getPropertyName(), t._2));
-
-      // Then, fill in all the rest of the properties.
-      for (HelenusProperty prop : properties) {
-        String key = prop.getPropertyName();
-        if (backingMap.containsKey(key)) {
-          // Some values man need to be converted (e.g. from String to Enum). This is done
-          // within the BeanColumnValueProvider below.
-          Optional<Function<Object, Object>> converter =
-              prop.getReadConverter(sessionOps.getSessionRepository());
-          if (converter.isPresent()) {
-            backingMap.put(key, converter.get().apply(backingMap.get(key)));
-          }
-        } else {
-          // If we started this operation with an instance of this type, use values from
-          // that.
-          if (pojo != null) {
-            backingMap.put(
-                key, BeanColumnValueProvider.INSTANCE.getColumnValue(pojo, -1, prop, immutable));
-          } else {
-            // Otherwise we'll use default values for the property type if available.
-            Class<?> propType = prop.getJavaType();
-            if (propType.isPrimitive()) {
-              DefaultPrimitiveTypes type = DefaultPrimitiveTypes.lookup(propType);
-              if (type == null) {
-                throw new HelenusException("unknown primitive type " + propType);
-              }
-              backingMap.put(key, type.getDefaultValue());
             }
-          }
-        }
-      }
 
-      // Lastly, create a new proxy object for the entity and return the new instance.
+		}
-      return (T) Helenus.map(iface, backingMap);
-    }
-    return null;
-  }
 
-  @Override
+	}
-  public T transform(ResultSet resultSet) {
-    if ((ifNotExists == true) && (resultSet.wasApplied() == false)) {
-      throw new HelenusException("Statement was not applied due to consistency constraints");
-    }
 
-    Class<?> iface = entity.getMappingInterface();
+	public InsertOperation ifNotExists() {
-    if (resultType == iface) {
+		this.ifNotExists = true;
-      T o = newInstance(iface);
+		return this;
-      if (o == null) {
+	}
-        // Oddly, this insert didn't change anything so simply return the pojo.
-        return (T) pojo;
-      }
-      return o;
-    }
-    return (T) resultSet;
-  }
 
-  public InsertOperation<T> usingTtl(int ttl) {
+	public InsertOperation ifNotExists(boolean enable) {
-    this.ttl = new int[1];
+		this.ifNotExists = enable;
-    this.ttl[0] = ttl;
+		return this;
-    return this;
+	}
-  }
 
-  public InsertOperation<T> usingTimestamp(long timestamp) {
+	public <V> InsertOperation value(Getter<V> getter, V val) {
-    this.timestamp = new long[1];
-    this.timestamp[0] = timestamp;
-    return this;
-  }
 
-  protected void adjustTtlAndWriteTime(MapExportable pojo) {
+		Objects.requireNonNull(getter, "getter is empty");
-    if (ttl != null || writeTime != 0L) {
-      List<String> columnNames =
-          values
-              .stream()
-              .map(t -> t._1.getProperty())
-              .filter(
-                  prop -> {
-                    switch (prop.getColumnType()) {
-                      case PARTITION_KEY:
-                      case CLUSTERING_COLUMN:
-                        return false;
-                      default:
-                        return true;
-                    }
-                  })
-              .map(prop -> prop.getColumnName().toCql(false))
-              .collect(Collectors.toList());
 
-      if (columnNames.size() > 0) {
+		if (val != null) {
-        if (ttl != null) {
+			HelenusPropertyNode node = MappingUtil.resolveMappingProperty(getter);
-          columnNames.forEach(name -> pojo.put(CacheUtil.ttlKey(name), ttl));
+			Object value = sessionOps.getValuePreparer().prepareColumnValue(val, node.getProperty());
-        }
-        if (writeTime != 0L) {
-          columnNames.forEach(name -> pojo.put(CacheUtil.writeTimeKey(name), writeTime));
-        }
-      }
-    }
-  }
 
-  @Override
+			if (value != null) {
-  protected boolean isIdempotentOperation() {
+				values.add(Fun.Tuple2.of(node, value));
-    return values.stream().map(v -> v._1.getProperty()).allMatch(prop -> prop.isIdempotent())
+			}
-        || super.isIdempotentOperation();
+		}
-  }
 
-  @Override
+		return this;
-  public T sync() throws TimeoutException {
+	}
-    T result = super.sync();
-    if (entity.isCacheable() && result != null) {
-      adjustTtlAndWriteTime((MapExportable) result);
-      sessionOps.updateCache(result, bindFacetValues());
-    }
-    return result;
-  }
 
-  @Override
+	@Override
-  public T sync(UnitOfWork uow) throws TimeoutException {
+	public BuiltStatement buildStatement() {
-    if (uow == null) {
-      return sync();
-    }
-    T result = super.sync(uow);
-    if (result != null && pojo != null && !(pojo == result) && pojo.equals(result)) {
-      // To preserve object identity we need to find this object in cache
-      // because it was unchanged by the INSERT but pojo in this case was
-      // the result of a draft.build().
-      T cachedValue = (T) uow.cacheLookup(bindFacetValues());
-      if (cachedValue != null) {
-        result = cachedValue;
-      }
-    }
-    Class<?> iface = entity.getMappingInterface();
-    if (resultType == iface) {
-      if (entity != null && MapExportable.class.isAssignableFrom(entity.getMappingInterface())) {
-        adjustTtlAndWriteTime((MapExportable) result);
-      }
-      cacheUpdate(uow, result, bindFacetValues());
-    }
-    return result;
-  }
 
-  public T batch(UnitOfWork uow) throws TimeoutException {
+		values.forEach(t -> addPropertyNode(t._1));
-    if (uow == null) {
-      throw new HelenusException("UnitOfWork cannot be null when batching operations.");
-    }
 
-    if (this.entity != null) {
+		if (values.isEmpty())
-      Class<?> iface = this.entity.getMappingInterface();
+		    return null;
-      if (resultType == iface) {
-        final T result = (pojo == null) ? newInstance(iface) : pojo;
-        if (result != null) {
-          adjustTtlAndWriteTime((MapExportable) result);
-          cacheUpdate(uow, result, bindFacetValues());
-        }
-        uow.batch(this);
-        return (T) result;
-      }
-    }
 
-    return sync(uow);
+		if (entity == null) {
-  }
+			throw new HelenusMappingException("unknown entity");
+		}
 
-  @Override
+		Insert insert = QueryBuilder.insertInto(entity.getName().toCql());
-  public List<Facet> bindFacetValues() {
-    List<Facet> facets = getFacets();
-    if (facets == null || facets.size() == 0) {
-      return new ArrayList<Facet>();
-    }
-    List<Facet> boundFacets = new ArrayList<>();
-    Map<HelenusProperty, Object> valuesMap = new HashMap<>(values.size());
-    values.forEach(t -> valuesMap.put(t._1.getProperty(), t._2));
 
-    for (Facet facet : facets) {
+		if (ifNotExists) {
-      if (facet instanceof UnboundFacet) {
+			insert.ifNotExists();
-        UnboundFacet unboundFacet = (UnboundFacet) facet;
+		}
-        UnboundFacet.Binder binder = unboundFacet.binder();
-        for (HelenusProperty prop : unboundFacet.getProperties()) {
-          Object value = valuesMap.get(prop);
-          if (value != null) {
-            binder.setValueForProperty(prop, value.toString());
-          }
-        }
-        if (binder.isBound()) {
-          boundFacets.add(binder.bind());
-        }
-      } else {
-        boundFacets.add(facet);
-      }
-    }
-    return boundFacets;
-  }
 
-  @Override
+		values.forEach(t -> {
-  public List<Facet> getFacets() {
+			insert.value(t._1.getColumnName(), t._2);
-    if (entity != null) {
+		});
-      return entity.getFacets();
+
-    } else {
+		if (this.ttl != null) {
-      return new ArrayList<Facet>();
+			insert.using(QueryBuilder.ttl(this.ttl[0]));
-    }
+		}
-  }
+		if (this.timestamp != null) {
+			insert.using(QueryBuilder.timestamp(this.timestamp[0]));
+		}
+
+		return insert;
+	}
+
+	@Override
+	public ResultSet transform(ResultSet resultSet) {
+		return resultSet;
+	}
+
+	public InsertOperation usingTtl(int ttl) {
+		this.ttl = new int[1];
+		this.ttl[0] = ttl;
+		return this;
+	}
+
+	public InsertOperation usingTimestamp(long timestamp) {
+		this.timestamp = new long[1];
+		this.timestamp[0] = timestamp;
+		return this;
+	}
+
+	private void addPropertyNode(HelenusPropertyNode p) {
+		if (entity == null) {
+			entity = p.getEntity();
+		} else if (entity != p.getEntity()) {
+			throw new HelenusMappingException("you can insert only single entity " + entity.getMappingInterface()
+					+ " or " + p.getEntity().getMappingInterface());
+		}
+	}
 }

src/main/java/net/helenus/core/operation/Operation.java

@@ -1,211 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.operation;
-
-import com.codahale.metrics.Meter;
-import com.codahale.metrics.MetricRegistry;
-import com.codahale.metrics.Timer;
-import com.datastax.driver.core.*;
-import com.datastax.driver.core.querybuilder.BuiltStatement;
-import com.google.common.base.Stopwatch;
-import java.net.InetAddress;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-import java.util.stream.Collectors;
-import net.helenus.core.AbstractSessionOperations;
-import net.helenus.core.UnitOfWork;
-import net.helenus.core.cache.Facet;
-import net.helenus.support.HelenusException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public abstract class Operation<E> {
-
-  private static final Logger LOG = LoggerFactory.getLogger(Operation.class);
-
-  protected final AbstractSessionOperations sessionOps;
-  protected boolean showValues;
-  protected long queryExecutionTimeout = 10;
-  protected TimeUnit queryTimeoutUnits = TimeUnit.SECONDS;
-  protected final Meter uowCacheHits;
-  protected final Meter uowCacheMiss;
-  protected final Meter sessionCacheHits;
-  protected final Meter sessionCacheMiss;
-  protected final Meter cacheHits;
-  protected final Meter cacheMiss;
-  protected final Timer requestLatency;
-
-  Operation(AbstractSessionOperations sessionOperations) {
-    this.sessionOps = sessionOperations;
-    this.showValues = sessionOps.showValues();
-    MetricRegistry metrics = sessionOperations.getMetricRegistry();
-    if (metrics == null) {
-      metrics = new MetricRegistry();
-    }
-    this.uowCacheHits = metrics.meter("net.helenus.UOW-cache-hits");
-    this.uowCacheMiss = metrics.meter("net.helenus.UOW-cache-miss");
-    this.sessionCacheHits = metrics.meter("net.helenus.session-cache-hits");
-    this.sessionCacheMiss = metrics.meter("net.helenus.session-cache-miss");
-    this.cacheHits = metrics.meter("net.helenus.cache-hits");
-    this.cacheMiss = metrics.meter("net.helenus.cache-miss");
-    this.requestLatency = metrics.timer("net.helenus.request-latency");
-  }
-
-  public static String queryString(BatchOperation operation, boolean includeValues) {
-    return operation.toString(includeValues);
-  }
-
-  public static String queryString(Statement statement, boolean includeValues) {
-    String query = null;
-    if (statement instanceof BuiltStatement) {
-      BuiltStatement builtStatement = (BuiltStatement) statement;
-      if (includeValues) {
-        RegularStatement regularStatement = builtStatement.setForceNoValues(true);
-        query = regularStatement.getQueryString();
-      } else {
-        query = builtStatement.getQueryString();
-      }
-    } else if (statement instanceof RegularStatement) {
-      RegularStatement regularStatement = (RegularStatement) statement;
-      query = regularStatement.getQueryString();
-    } else {
-      query = statement.toString();
-    }
-    return query;
-  }
-
-  public ResultSet execute(
-      AbstractSessionOperations session,
-      UnitOfWork uow,
-      long timeout,
-      TimeUnit units,
-      boolean showValues,
-      boolean cached)
-      throws TimeoutException {
-
-    Statement statement = options(buildStatement(cached));
-
-    if (session.isShowCql()) {
-      String stmt =
-          (this instanceof BatchOperation)
-              ? queryString((BatchOperation) this, showValues)
-              : queryString(statement, showValues);
-      session.getPrintStream().println(stmt);
-    } else if (LOG.isDebugEnabled()) {
-      String stmt =
-          (this instanceof BatchOperation)
-              ? queryString((BatchOperation) this, showValues)
-              : queryString(statement, showValues);
-      LOG.info("CQL> " + stmt);
-    }
-
-    Stopwatch timer = Stopwatch.createStarted();
-    try {
-      ResultSetFuture futureResultSet = session.executeAsync(statement, uow, timer);
-      if (uow != null) uow.recordCacheAndDatabaseOperationCount(0, 1);
-      ResultSet resultSet = futureResultSet.getUninterruptibly(timeout, units);
-      ColumnDefinitions columnDefinitions = resultSet.getColumnDefinitions();
-      if (LOG.isDebugEnabled()) {
-        ExecutionInfo ei = resultSet.getExecutionInfo();
-        Host qh = ei.getQueriedHost();
-        String oh =
-            ei.getTriedHosts()
-                .stream()
-                .map(Host::getAddress)
-                .map(InetAddress::toString)
-                .collect(Collectors.joining(", "));
-        ConsistencyLevel cl = ei.getAchievedConsistencyLevel();
-        if (cl == null) {
-          cl = statement.getConsistencyLevel();
-        }
-        int se = ei.getSpeculativeExecutions();
-        String warn = ei.getWarnings().stream().collect(Collectors.joining(", "));
-        String ri =
-            String.format(
-                "%s %s ~%s %s %s%s%sspec-retries: %d",
-                "server v" + qh.getCassandraVersion(),
-                qh.getAddress().toString(),
-                (oh != null && !oh.equals("")) ? " [tried: " + oh + "]" : "",
-                qh.getDatacenter(),
-                qh.getRack(),
-                (cl != null)
-                    ? (" consistency: "
-                        + cl.name()
-                        + " "
-                        + (cl.isDCLocal() ? " DC " : "")
-                        + (cl.isSerial() ? " SC " : ""))
-                    : "",
-                (warn != null && !warn.equals("")) ? ": " + warn : "",
-                se);
-        if (uow != null) uow.setInfo(ri);
-        else LOG.debug(ri);
-      }
-      if (!resultSet.wasApplied()
-          && !(columnDefinitions.size() > 1 || !columnDefinitions.contains("[applied]"))) {
-        throw new HelenusException("Operation Failed");
-      }
-      return resultSet;
-
-    } finally {
-      timer.stop();
-      if (uow != null) uow.addDatabaseTime("Cassandra", timer);
-      log(statement, uow, timer, showValues);
-    }
-  }
-
-  void log(Statement statement, UnitOfWork uow, Stopwatch timer, boolean showValues) {
-    if (LOG.isInfoEnabled()) {
-      String uowString = "";
-      if (uow != null) {
-        uowString = "UOW(" + uow.hashCode() + ")";
-      }
-      String timerString = "";
-      if (timer != null) {
-        timerString = String.format(" %s ", timer.toString());
-      }
-      LOG.info(
-          String.format(
-              "%s%s%s", uowString, timerString, Operation.queryString(statement, showValues)));
-    }
-  }
-
-  protected boolean isIdempotentOperation() {
-    return false;
-  }
-
-  public Statement options(Statement statement) {
-    return statement;
-  }
-
-  public Statement buildStatement(boolean cached) {
-    return null;
-  }
-
-  public List<Facet> getFacets() {
-    return new ArrayList<Facet>();
-  }
-
-  public List<Facet> bindFacetValues() {
-    return null;
-  }
-
-  public boolean isSessionCacheable() {
-    return false;
-  }
-}

src/main/java/net/helenus/core/operation/PreparedOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -21,27 +20,28 @@ import com.datastax.driver.core.PreparedStatement;
 
 public final class PreparedOperation<E> {
 
-  private final PreparedStatement preparedStatement;
+	private final PreparedStatement preparedStatement;
-  private final AbstractOperation<E, ?> operation;
+	private final AbstractOperation<E, ?> operation;
 
-  public PreparedOperation(PreparedStatement statement, AbstractOperation<E, ?> operation) {
+	public PreparedOperation(PreparedStatement statement, AbstractOperation<E, ?> operation) {
-    this.preparedStatement = statement;
+		this.preparedStatement = statement;
-    this.operation = operation;
+		this.operation = operation;
-  }
+	}
 
-  public PreparedStatement getPreparedStatement() {
+	public PreparedStatement getPreparedStatement() {
-    return preparedStatement;
+		return preparedStatement;
-  }
+	}
 
-  public BoundOperation<E> bind(Object... params) {
+	public BoundOperation<E> bind(Object... params) {
 
-    BoundStatement boundStatement = preparedStatement.bind(params);
+		BoundStatement boundStatement = preparedStatement.bind(params);
 
-    return new BoundOperation<E>(boundStatement, operation);
+		return new BoundOperation<E>(boundStatement, operation);
-  }
+	}
+
+	@Override
+	public String toString() {
+		return preparedStatement.getQueryString();
+	}
 
-  @Override
-  public String toString() {
-    return preparedStatement.getQueryString();
-  }
 }

src/main/java/net/helenus/core/operation/PreparedOptionalOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -21,28 +20,28 @@ import com.datastax.driver.core.PreparedStatement;
 
 public final class PreparedOptionalOperation<E> {
 
-  private final PreparedStatement preparedStatement;
+	private final PreparedStatement preparedStatement;
-  private final AbstractOptionalOperation<E, ?> operation;
+	private final AbstractOptionalOperation<E, ?> operation;
 
-  public PreparedOptionalOperation(
+	public PreparedOptionalOperation(PreparedStatement statement, AbstractOptionalOperation<E, ?> operation) {
-      PreparedStatement statement, AbstractOptionalOperation<E, ?> operation) {
+		this.preparedStatement = statement;
-    this.preparedStatement = statement;
+		this.operation = operation;
-    this.operation = operation;
+	}
-  }
 
-  public PreparedStatement getPreparedStatement() {
+	public PreparedStatement getPreparedStatement() {
-    return preparedStatement;
+		return preparedStatement;
-  }
+	}
 
-  public BoundOptionalOperation<E> bind(Object... params) {
+	public BoundOptionalOperation<E> bind(Object... params) {
 
-    BoundStatement boundStatement = preparedStatement.bind(params);
+		BoundStatement boundStatement = preparedStatement.bind(params);
 
-    return new BoundOptionalOperation<E>(boundStatement, operation);
+		return new BoundOptionalOperation<E>(boundStatement, operation);
-  }
+	}
+
+	@Override
+	public String toString() {
+		return preparedStatement.getQueryString();
+	}
 
-  @Override
-  public String toString() {
-    return preparedStatement.getQueryString();
-  }
 }

src/main/java/net/helenus/core/operation/PreparedStreamOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -21,26 +20,28 @@ import com.datastax.driver.core.PreparedStatement;
 
 public final class PreparedStreamOperation<E> {
 
-  private final PreparedStatement preparedStatement;
+	private final PreparedStatement preparedStatement;
-  private final AbstractStreamOperation<E, ?> operation;
+	private final AbstractStreamOperation<E, ?> operation;
 
-  public PreparedStreamOperation(
+	public PreparedStreamOperation(PreparedStatement statement, AbstractStreamOperation<E, ?> operation) {
-      PreparedStatement statement, AbstractStreamOperation<E, ?> operation) {
+		this.preparedStatement = statement;
-    this.preparedStatement = statement;
+		this.operation = operation;
-    this.operation = operation;
+	}
-  }
 
-  public PreparedStatement getPreparedStatement() {
+	public PreparedStatement getPreparedStatement() {
-    return preparedStatement;
+		return preparedStatement;
-  }
+	}
 
-  public BoundStreamOperation<E> bind(Object... params) {
+	public BoundStreamOperation<E> bind(Object... params) {
-    BoundStatement boundStatement = preparedStatement.bind(params);
+
-    return new BoundStreamOperation<E>(boundStatement, operation);
+		BoundStatement boundStatement = preparedStatement.bind(params);
-  }
+
+		return new BoundStreamOperation<E>(boundStatement, operation);
+	}
+
+	@Override
+	public String toString() {
+		return preparedStatement.getQueryString();
+	}
 
-  @Override
-  public String toString() {
-    return preparedStatement.getQueryString();
-  }
 }

src/main/java/net/helenus/core/operation/SelectFirstOperation.java

@@ -1,72 +1,50 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.core.operation;
-package net.helenus.core.operation;
+
-
+import java.util.Optional;
-import com.datastax.driver.core.ResultSet;
+import java.util.function.Function;
-import com.datastax.driver.core.querybuilder.BuiltStatement;
+
-import java.util.List;
+import com.datastax.driver.core.ResultSet;
-import java.util.Optional;
+import com.datastax.driver.core.querybuilder.BuiltStatement;
-import java.util.function.Function;
+
-import net.helenus.core.cache.Facet;
+public final class SelectFirstOperation<E> extends AbstractFilterOptionalOperation<E, SelectFirstOperation<E>> {
-
+
-public final class SelectFirstOperation<E>
+	private final SelectOperation<E> src;
-    extends AbstractFilterOptionalOperation<E, SelectFirstOperation<E>> {
+
-
+	public SelectFirstOperation(SelectOperation<E> src) {
-  private final SelectOperation<E> delegate;
+		super(src.sessionOps);
-
+
-  public SelectFirstOperation(SelectOperation<E> delegate) {
+		this.src = src;
-    super(delegate.sessionOps);
+		this.filters = src.filters;
-
+		this.ifFilters = src.ifFilters;
-    this.delegate = delegate;
+	}
-    this.filters = delegate.filters;
+
-    this.ifFilters = delegate.ifFilters;
+	public <R> SelectFirstTransformingOperation<R, E> map(Function<E, R> fn) {
-  }
+		return new SelectFirstTransformingOperation<R, E>(src, fn);
-
+	}
-  public <R> SelectFirstTransformingOperation<R, E> map(Function<E, R> fn) {
+
-    return new SelectFirstTransformingOperation<R, E>(delegate, fn);
+	@Override
-  }
+	public BuiltStatement buildStatement() {
-
+		return src.buildStatement();
-  @Override
+	}
-  public BuiltStatement buildStatement(boolean cached) {
+
-    return delegate.buildStatement(cached);
+	@Override
-  }
+	public Optional<E> transform(ResultSet resultSet) {
-
+		return src.transform(resultSet).findFirst();
-  @Override
+	}
-  public List<Facet> getFacets() {
+
-    return delegate.getFacets();
+}
-  }
-
-  @Override
-  public List<Facet> bindFacetValues() {
-    return delegate.bindFacetValues();
-  }
-
-  @Override
-  public Optional<E> transform(ResultSet resultSet) {
-    return delegate.transform(resultSet).findFirst();
-  }
-
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
-
-  @Override
-  public boolean ignoreCache() {
-    return delegate.ignoreCache();
-  }
-}

src/main/java/net/helenus/core/operation/SelectFirstTransformingOperation.java

@@ -1,65 +1,50 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.core.operation;
-package net.helenus.core.operation;
+
-
+import java.util.Optional;
-import com.datastax.driver.core.ResultSet;
+import java.util.function.Function;
-import com.datastax.driver.core.querybuilder.BuiltStatement;
+
-import java.util.List;
+import com.datastax.driver.core.ResultSet;
-import java.util.Optional;
+import com.datastax.driver.core.querybuilder.BuiltStatement;
-import java.util.function.Function;
+
-import net.helenus.core.cache.Facet;
+public final class SelectFirstTransformingOperation<R, E>
-
+		extends
-public final class SelectFirstTransformingOperation<R, E>
+			AbstractFilterOptionalOperation<R, SelectFirstTransformingOperation<R, E>> {
-    extends AbstractFilterOptionalOperation<R, SelectFirstTransformingOperation<R, E>> {
+
-
+	private final SelectOperation<E> src;
-  private final SelectOperation<E> delegate;
+	private final Function<E, R> fn;
-  private final Function<E, R> fn;
+
-
+	public SelectFirstTransformingOperation(SelectOperation<E> src, Function<E, R> fn) {
-  public SelectFirstTransformingOperation(SelectOperation<E> delegate, Function<E, R> fn) {
+		super(src.sessionOps);
-    super(delegate.sessionOps);
+
-
+		this.src = src;
-    this.delegate = delegate;
+		this.fn = fn;
-    this.fn = fn;
+		this.filters = src.filters;
-    this.filters = delegate.filters;
+		this.ifFilters = src.ifFilters;
-    this.ifFilters = delegate.ifFilters;
+	}
-  }
+
-
+	@Override
-  @Override
+	public BuiltStatement buildStatement() {
-  public List<Facet> bindFacetValues() {
+		return src.buildStatement();
-    return delegate.bindFacetValues();
+	}
-  }
+
-
+	@Override
-  @Override
+	public Optional<R> transform(ResultSet resultSet) {
-  public BuiltStatement buildStatement(boolean cached) {
+		return src.transform(resultSet).findFirst().map(fn);
-    return delegate.buildStatement(cached);
+	}
-  }
+
-
+}
-  @Override
-  public Optional<R> transform(ResultSet resultSet) {
-    return delegate.transform(resultSet).findFirst().map(fn);
-  }
-
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
-
-  @Override
-  public boolean ignoreCache() {
-    return delegate.ignoreCache();
-  }
-}

src/main/java/net/helenus/core/operation/SelectOperation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,6 +15,11 @@
  */
 package net.helenus.core.operation;
 
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+
 import com.datastax.driver.core.ResultSet;
 import com.datastax.driver.core.Row;
 import com.datastax.driver.core.querybuilder.BuiltStatement;
@@ -24,355 +28,231 @@ import com.datastax.driver.core.querybuilder.QueryBuilder;
 import com.datastax.driver.core.querybuilder.Select;
 import com.datastax.driver.core.querybuilder.Select.Selection;
 import com.datastax.driver.core.querybuilder.Select.Where;
-import java.util.*;
+
-import java.util.function.Function;
-import java.util.stream.Stream;
-import java.util.stream.StreamSupport;
 import net.helenus.core.*;
-import net.helenus.core.cache.CacheUtil;
-import net.helenus.core.cache.Facet;
-import net.helenus.core.cache.UnboundFacet;
-import net.helenus.core.reflect.Entity;
 import net.helenus.core.reflect.HelenusPropertyNode;
 import net.helenus.mapping.HelenusEntity;
-import net.helenus.mapping.HelenusProperty;
 import net.helenus.mapping.MappingUtil;
 import net.helenus.mapping.OrderingDirection;
 import net.helenus.mapping.value.ColumnValueProvider;
 import net.helenus.mapping.value.ValueProviderMap;
 import net.helenus.support.Fun;
 import net.helenus.support.HelenusMappingException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public final class SelectOperation<E> extends AbstractFilterStreamOperation<E, SelectOperation<E>> {
 
-  private static final Logger LOG = LoggerFactory.getLogger(SelectOperation.class);
+	protected Function<Row, E> rowMapper = null;
+	protected final List<HelenusPropertyNode> props = new ArrayList<HelenusPropertyNode>();
 
-  protected final List<HelenusPropertyNode> props = new ArrayList<HelenusPropertyNode>();
+	protected List<Ordering> ordering = null;
-  protected Function<Row, E> rowMapper = null;
+	protected Integer limit = null;
-  protected List<Ordering> ordering = null;
+	protected boolean allowFiltering = false;
-  protected Integer limit = null;
-  protected boolean allowFiltering = false;
 
-  protected String alternateTableName = null;
+	public SelectOperation(AbstractSessionOperations sessionOperations) {
-  protected boolean isCacheable = false;
+		super(sessionOperations);
-  protected boolean implementsEntityType = false;
 
-  @SuppressWarnings("unchecked")
+		this.rowMapper = new Function<Row, E>() {
-  public SelectOperation(AbstractSessionOperations sessionOperations) {
-    super(sessionOperations);
 
-    this.rowMapper =
+			@Override
-        new Function<Row, E>() {
+			public E apply(Row source) {
 
-          @Override
+				ColumnValueProvider valueProvider = sessionOps.getValueProvider();
-          public E apply(Row source) {
+				Object[] arr = new Object[props.size()];
 
-            ColumnValueProvider valueProvider = sessionOps.getValueProvider();
+				int i = 0;
-            Object[] arr = new Object[props.size()];
+				for (HelenusPropertyNode p : props) {
+					Object value = valueProvider.getColumnValue(source, -1, p.getProperty());
+					arr[i++] = value;
+				}
 
-            int i = 0;
+				return (E) Fun.ArrayTuple.of(arr);
-            for (HelenusPropertyNode p : props) {
+			}
-              Object value = valueProvider.getColumnValue(source, -1, p.getProperty());
-              arr[i++] = value;
-            }
 
-            return (E) Fun.ArrayTuple.of(arr);
+		};
-          }
+	}
-        };
-  }
 
-  public SelectOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
+	public SelectOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity) {
 
-    super(sessionOperations);
+		super(sessionOperations);
 
-    entity
+		entity.getOrderedProperties().stream().map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .getOrderedProperties()
+				.forEach(p -> this.props.add(p));
-        .stream()
-        .map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .forEach(p -> this.props.add(p));
 
-    this.isCacheable = entity.isCacheable();
+	}
-    this.implementsEntityType = Entity.class.isAssignableFrom(entity.getMappingInterface());
-  }
 
-  public SelectOperation(
+	public SelectOperation(AbstractSessionOperations sessionOperations, HelenusEntity entity,
-      AbstractSessionOperations sessionOperations,
+			Function<Row, E> rowMapper) {
-      HelenusEntity entity,
-      Function<Row, E> rowMapper) {
 
-    super(sessionOperations);
+		super(sessionOperations);
-    this.rowMapper = rowMapper;
+		this.rowMapper = rowMapper;
 
-    entity
+		entity.getOrderedProperties().stream().map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .getOrderedProperties()
+				.forEach(p -> this.props.add(p));
-        .stream()
-        .map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .forEach(p -> this.props.add(p));
 
-    this.isCacheable = entity.isCacheable();
+	}
-    this.implementsEntityType = Entity.class.isAssignableFrom(entity.getMappingInterface());
-  }
 
-  public SelectOperation(
+	public SelectOperation(AbstractSessionOperations sessionOperations, Function<Row, E> rowMapper,
-      AbstractSessionOperations sessionOperations,
+			HelenusPropertyNode... props) {
-      Function<Row, E> rowMapper,
-      HelenusPropertyNode... props) {
 
-    super(sessionOperations);
+		super(sessionOperations);
+		this.rowMapper = rowMapper;
+		Collections.addAll(this.props, props);
+	}
 
-    this.rowMapper = rowMapper;
+	public CountOperation count() {
-    Collections.addAll(this.props, props);
 
-    HelenusEntity entity = props[0].getEntity();
+		HelenusEntity entity = null;
-    this.isCacheable = entity.isCacheable();
+		for (HelenusPropertyNode prop : props) {
-    this.implementsEntityType = Entity.class.isAssignableFrom(entity.getMappingInterface());
-  }
 
-  public CountOperation count() {
+			if (entity == null) {
+				entity = prop.getEntity();
+			} else if (entity != prop.getEntity()) {
+				throw new HelenusMappingException("you can count records only from a single entity "
+						+ entity.getMappingInterface() + " or " + prop.getEntity().getMappingInterface());
+			}
+		}
 
-    HelenusEntity entity = null;
+		return new CountOperation(sessionOps, entity);
-    for (HelenusPropertyNode prop : props) {
+	}
 
-      if (entity == null) {
+	public SelectFirstOperation<E> single() {
-        entity = prop.getEntity();
+		limit(1);
-      } else if (entity != prop.getEntity()) {
+		return new SelectFirstOperation<E>(this);
-        throw new HelenusMappingException(
+	}
-            "you can count records only from a single entity "
-                + entity.getMappingInterface()
-                + " or "
-                + prop.getEntity().getMappingInterface());
-      }
-    }
 
-    return new CountOperation(sessionOps, entity);
+	public <R> SelectTransformingOperation<R, E> mapTo(Class<R> entityClass) {
-  }
 
-  public <V extends E> SelectOperation<E> from(Class<V> materializedViewClass) {
+		Objects.requireNonNull(entityClass, "entityClass is null");
-    Objects.requireNonNull(materializedViewClass);
-    HelenusEntity entity = Helenus.entity(materializedViewClass);
-    this.alternateTableName = entity.getName().toCql();
-    this.props.clear();
-    entity
-        .getOrderedProperties()
-        .stream()
-        .map(p -> new HelenusPropertyNode(p, Optional.empty()))
-        .forEach(p -> this.props.add(p));
-    return this;
-  }
 
-  public SelectFirstOperation<E> single() {
+		HelenusEntity entity = Helenus.entity(entityClass);
-    limit(1);
-    return new SelectFirstOperation<E>(this);
-  }
 
-  public <R> SelectTransformingOperation<R, E> mapTo(Class<R> entityClass) {
+		this.rowMapper = null;
 
-    Objects.requireNonNull(entityClass, "entityClass is null");
+		return new SelectTransformingOperation<R, E>(this, (r) -> {
 
-    HelenusEntity entity = Helenus.entity(entityClass);
+			Map<String, Object> map = new ValueProviderMap(r, sessionOps.getValueProvider(), entity);
+			return (R) Helenus.map(entityClass, map);
 
-    this.rowMapper = null;
+		});
+	}
 
-    return new SelectTransformingOperation<R, E>(
+	public <R> SelectTransformingOperation<R, E> map(Function<E, R> fn) {
-        this,
+		return new SelectTransformingOperation<R, E>(this, fn);
-        (r) -> {
+	}
-          Map<String, Object> map = new ValueProviderMap(r, sessionOps.getValueProvider(), entity);
-          return (R) Helenus.map(entityClass, map);
-        });
-  }
 
-  public <R> SelectTransformingOperation<R, E> map(Function<E, R> fn) {
+	public SelectOperation<E> column(Getter<?> getter) {
-    return new SelectTransformingOperation<R, E>(this, fn);
+		HelenusPropertyNode p = MappingUtil.resolveMappingProperty(getter);
-  }
+		this.props.add(p);
+		return this;
+	}
 
-  public SelectOperation<E> column(Getter<?> getter) {
+	public SelectOperation<E> orderBy(Getter<?> getter, OrderingDirection direction) {
-    HelenusPropertyNode p = MappingUtil.resolveMappingProperty(getter);
+		getOrCreateOrdering().add(new Ordered(getter, direction).getOrdering());
-    this.props.add(p);
+		return this;
-    return this;
+	}
-  }
 
-  public SelectOperation<E> orderBy(Getter<?> getter, OrderingDirection direction) {
+	public SelectOperation<E> orderBy(Ordered ordered) {
-    getOrCreateOrdering().add(new Ordered(getter, direction).getOrdering());
+		getOrCreateOrdering().add(ordered.getOrdering());
-    return this;
+		return this;
-  }
+	}
 
-  public SelectOperation<E> orderBy(Ordered ordered) {
+	public SelectOperation<E> limit(Integer limit) {
-    getOrCreateOrdering().add(ordered.getOrdering());
+		this.limit = limit;
-    return this;
+		return this;
-  }
+	}
 
-  public SelectOperation<E> limit(Integer limit) {
+	public SelectOperation<E> allowFiltering() {
-    this.limit = limit;
+		this.allowFiltering = true;
-    return this;
+		return this;
-  }
+	}
 
-  public SelectOperation<E> allowFiltering() {
+	@Override
-    this.allowFiltering = true;
+	public BuiltStatement buildStatement() {
-    return this;
-  }
 
-  @Override
+		HelenusEntity entity = null;
-  public boolean isSessionCacheable() {
+		Selection selection = QueryBuilder.select();
-    return isCacheable;
-  }
 
-  @Override
+		for (HelenusPropertyNode prop : props) {
-  public List<Facet> getFacets() {
+			selection = selection.column(prop.getColumnName());
-    HelenusEntity entity = props.get(0).getEntity();
-    return entity.getFacets();
-  }
 
-  @Override
+			if (prop.getProperty().caseSensitiveIndex()) {
-  public List<Facet> bindFacetValues() {
+				allowFiltering = true;
-    HelenusEntity entity = props.get(0).getEntity();
+			}
-    List<Facet> boundFacets = new ArrayList<>();
 
-    for (Facet facet : entity.getFacets()) {
+			if (entity == null) {
-      if (facet instanceof UnboundFacet) {
+				entity = prop.getEntity();
-        UnboundFacet unboundFacet = (UnboundFacet) facet;
+			} else if (entity != prop.getEntity()) {
-        UnboundFacet.Binder binder = unboundFacet.binder();
+				throw new HelenusMappingException("you can select columns only from a single entity "
-        for (HelenusProperty prop : unboundFacet.getProperties()) {
+						+ entity.getMappingInterface() + " or " + prop.getEntity().getMappingInterface());
-          if (filters != null) {
+			}
-            Filter filter = filters.get(prop);
+		}
-            if (filter != null) {
+
-              Object[] postulates = filter.postulateValues();
+		if (entity == null) {
-              for (Object p : postulates) {
+			throw new HelenusMappingException("no entity or table to select data");
-                binder.setValueForProperty(prop, p.toString());
+		}
-              }
+
-            }
+		Select select = selection.from(entity.getName().toCql());
-          }
+
+		if (ordering != null && !ordering.isEmpty()) {
+			select.orderBy(ordering.toArray(new Ordering[ordering.size()]));
+		}
+
+		if (limit != null) {
+			select.limit(limit);
+		}
+
+		if (filters != null && !filters.isEmpty()) {
+
+			Where where = select.where();
+
+			for (Filter<?> filter : filters) {
+				where.and(filter.getClause(sessionOps.getValuePreparer()));
+			}
+		}
+
+		if (ifFilters != null && !ifFilters.isEmpty()) {
+			logger.error("onlyIf conditions " + ifFilters + " would be ignored in the statement " + select);
+		}
+
+		if (allowFiltering) {
+			select.allowFiltering();
+		}
+
+		return select;
+	}
+
+	@Override
+	public Optional<E> sync() {
+	    if (true) {
+        } else {
+            return super.sync();
         }
-        if (binder.isBound()) {
+	}
-          boundFacets.add(binder.bind());
-        }
-      } else {
-        boundFacets.add(facet);
-      }
-    }
-    return boundFacets;
-  }
 
-  @Override
+		@SuppressWarnings("unchecked")
-  public BuiltStatement buildStatement(boolean cached) {
+	@Override
+	public Stream<E> transform(ResultSet resultSet) {
 
-    HelenusEntity entity = null;
+		if (rowMapper != null) {
-    Selection selection = QueryBuilder.select();
 
-    for (HelenusPropertyNode prop : props) {
+			return StreamSupport
-      String columnName = prop.getColumnName();
+					.stream(Spliterators.spliteratorUnknownSize(resultSet.iterator(), Spliterator.ORDERED), false)
-      selection = selection.column(columnName);
+					.map(rowMapper);
+		}
 
-      if (entity == null) {
+		else {
-        entity = prop.getEntity();
-      } else if (entity != prop.getEntity()) {
-        throw new HelenusMappingException(
-            "you can select columns only from a single entity "
-                + entity.getMappingInterface()
-                + " or "
-                + prop.getEntity().getMappingInterface());
-      }
 
-      if (cached && implementsEntityType) {
+			return (Stream<E>) StreamSupport
-        switch (prop.getProperty().getColumnType()) {
+					.stream(Spliterators.spliteratorUnknownSize(resultSet.iterator(), Spliterator.ORDERED), false);
-          case PARTITION_KEY:
-          case CLUSTERING_COLUMN:
-            break;
-          default:
-            if (entity.equals(prop.getEntity())) {
-              if (!prop.getProperty().getDataType().isCollectionType()) {
-                columnName = prop.getProperty().getColumnName().toCql(false);
-                selection.ttl(columnName).as('"' + CacheUtil.ttlKey(columnName) + '"');
-                selection.writeTime(columnName).as('"' + CacheUtil.writeTimeKey(columnName) + '"');
-              }
-            }
-            break;
-        }
-      }
-    }
 
-    if (entity == null) {
+		}
-      throw new HelenusMappingException("no entity or table to select data");
+	}
-    }
 
-    String tableName = alternateTableName == null ? entity.getName().toCql() : alternateTableName;
+	private List<Ordering> getOrCreateOrdering() {
-    Select select = selection.from(tableName);
+		if (ordering == null) {
+			ordering = new ArrayList<Ordering>();
+		}
+		return ordering;
+	}
 
-    if (ordering != null && !ordering.isEmpty()) {
-      select.orderBy(ordering.toArray(new Ordering[ordering.size()]));
-    }
-
-    if (limit != null) {
-      select.limit(limit);
-    }
-
-    if (filters != null && !filters.isEmpty()) {
-
-      Where where = select.where();
-
-      boolean isFirstIndex = true;
-      for (Filter<?> filter : filters.values()) {
-        where.and(filter.getClause(sessionOps.getValuePreparer()));
-        HelenusProperty filterProp = filter.getNode().getProperty();
-        HelenusProperty prop =
-            props
-                .stream()
-                .map(HelenusPropertyNode::getProperty)
-                .filter(thisProp -> thisProp.getPropertyName().equals(filterProp.getPropertyName()))
-                .findFirst()
-                .orElse(null);
-        if (allowFiltering == false && prop != null) {
-          switch (prop.getColumnType()) {
-            case PARTITION_KEY:
-              break;
-            case CLUSTERING_COLUMN:
-            default:
-              // When using non-Cassandra-standard 2i types or when using more than one
-              // indexed column or non-indexed columns the query must include ALLOW FILTERING.
-              if (prop.caseSensitiveIndex() == false) {
-                allowFiltering = true;
-              } else if (prop.getIndexName() != null) {
-                allowFiltering |= !isFirstIndex;
-                isFirstIndex = false;
-              } else {
-                allowFiltering = true;
-              }
-          }
-        }
-      }
-    }
-
-    if (ifFilters != null && !ifFilters.isEmpty()) {
-      LOG.error("onlyIf conditions " + ifFilters + " would be ignored in the statement " + select);
-    }
-
-    if (allowFiltering) {
-      select.allowFiltering();
-    }
-
-    return select;
-  }
-
-  @SuppressWarnings("unchecked")
-  @Override
-  public Stream<E> transform(ResultSet resultSet) {
-    if (rowMapper != null) {
-      return StreamSupport.stream(
-              Spliterators.spliteratorUnknownSize(resultSet.iterator(), Spliterator.ORDERED), false)
-          .map(rowMapper);
-    } else {
-      return (Stream<E>)
-          StreamSupport.stream(
-              Spliterators.spliteratorUnknownSize(resultSet.iterator(), Spliterator.ORDERED),
-              false);
-    }
-  }
-
-  private List<Ordering> getOrCreateOrdering() {
-    if (ordering == null) {
-      ordering = new ArrayList<Ordering>();
-    }
-    return ordering;
-  }
 }

src/main/java/net/helenus/core/operation/SelectTransformingOperation.java

@@ -1,70 +1,50 @@
-/*
+/*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
+ *
- *
+ *   Licensed under the Apache License, Version 2.0 (the "License");
- *   Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
- *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
- *   You may obtain a copy of the License at
+ *
- *
+ *      http://www.apache.org/licenses/LICENSE-2.0
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *
- *
+ *   Unless required by applicable law or agreed to in writing, software
- *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
- *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
- *   See the License for the specific language governing permissions and
+ *   limitations under the License.
- *   limitations under the License.
+ */
- */
+package net.helenus.core.operation;
-package net.helenus.core.operation;
+
-
+import java.util.function.Function;
-import com.datastax.driver.core.ResultSet;
+import java.util.stream.Stream;
-import com.datastax.driver.core.querybuilder.BuiltStatement;
+
-import java.util.List;
+import com.datastax.driver.core.ResultSet;
-import java.util.function.Function;
+import com.datastax.driver.core.querybuilder.BuiltStatement;
-import java.util.stream.Stream;
+
-import net.helenus.core.cache.Facet;
+public final class SelectTransformingOperation<R, E>
-
+		extends
-public final class SelectTransformingOperation<R, E>
+			AbstractFilterStreamOperation<R, SelectTransformingOperation<R, E>> {
-    extends AbstractFilterStreamOperation<R, SelectTransformingOperation<R, E>> {
+
-
+	private final SelectOperation<E> src;
-  private final SelectOperation<E> delegate;
+	private final Function<E, R> fn;
-  private final Function<E, R> fn;
+
-
+	public SelectTransformingOperation(SelectOperation<E> src, Function<E, R> fn) {
-  public SelectTransformingOperation(SelectOperation<E> delegate, Function<E, R> fn) {
+		super(src.sessionOps);
-    super(delegate.sessionOps);
+
-
+		this.src = src;
-    this.delegate = delegate;
+		this.fn = fn;
-    this.fn = fn;
+		this.filters = src.filters;
-    this.filters = delegate.filters;
+		this.ifFilters = src.ifFilters;
-    this.ifFilters = delegate.ifFilters;
+	}
-  }
+
-
+	@Override
-  @Override
+	public BuiltStatement buildStatement() {
-  public List<Facet> bindFacetValues() {
+		return src.buildStatement();
-    return delegate.bindFacetValues();
+	}
-  }
+
-
+	@Override
-  @Override
+	public Stream<R> transform(ResultSet resultSet) {
-  public List<Facet> getFacets() {
+		return src.transform(resultSet).map(fn);
-    return delegate.getFacets();
+	}
-  }
+
-
+}
-  @Override
-  public BuiltStatement buildStatement(boolean cached) {
-    return delegate.buildStatement(cached);
-  }
-
-  @Override
-  public Stream<R> transform(ResultSet resultSet) {
-    return delegate.transform(resultSet).map(fn);
-  }
-
-  @Override
-  public boolean isSessionCacheable() {
-    return delegate.isSessionCacheable();
-  }
-
-  @Override
-  public boolean ignoreCache() {
-    return delegate.ignoreCache();
-  }
-}

src/main/java/net/helenus/core/reflect/DefaultPrimitiveTypes.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,41 +19,36 @@ import java.util.HashMap;
 import java.util.Map;
 
 public enum DefaultPrimitiveTypes {
-  BOOLEAN(boolean.class, false),
-  BYTE(byte.class, (byte) 0x0),
-  CHAR(char.class, (char) 0x0),
-  SHORT(short.class, (short) 0),
-  INT(int.class, 0),
-  LONG(long.class, 0L),
-  FLOAT(float.class, 0.0f),
-  DOUBLE(double.class, 0.0);
 
-  private static final Map<Class<?>, DefaultPrimitiveTypes> map =
+	BOOLEAN(boolean.class, false), BYTE(byte.class, (byte) 0x0), CHAR(char.class, (char) 0x0), SHORT(short.class,
-      new HashMap<Class<?>, DefaultPrimitiveTypes>();
+			(short) 0), INT(int.class, 0), LONG(long.class, 0L), FLOAT(float.class, 0.0f), DOUBLE(double.class, 0.0);
 
-  static {
+	private final Class<?> primitiveClass;
-    for (DefaultPrimitiveTypes type : DefaultPrimitiveTypes.values()) {
+	private final Object defaultValue;
-      map.put(type.getPrimitiveClass(), type);
-    }
-  }
 
-  private final Class<?> primitiveClass;
+	private final static Map<Class<?>, DefaultPrimitiveTypes> map = new HashMap<Class<?>, DefaultPrimitiveTypes>();
-  private final Object defaultValue;
 
-  private DefaultPrimitiveTypes(Class<?> primitiveClass, Object defaultValue) {
+	static {
-    this.primitiveClass = primitiveClass;
+		for (DefaultPrimitiveTypes type : DefaultPrimitiveTypes.values()) {
-    this.defaultValue = defaultValue;
+			map.put(type.getPrimitiveClass(), type);
-  }
+		}
+	}
 
-  public static DefaultPrimitiveTypes lookup(Class<?> primitiveClass) {
+	private DefaultPrimitiveTypes(Class<?> primitiveClass, Object defaultValue) {
-    return map.get(primitiveClass);
+		this.primitiveClass = primitiveClass;
-  }
+		this.defaultValue = defaultValue;
+	}
 
-  public Class<?> getPrimitiveClass() {
+	public static DefaultPrimitiveTypes lookup(Class<?> primitiveClass) {
-    return primitiveClass;
+		return map.get(primitiveClass);
-  }
+	}
+
+	public Class<?> getPrimitiveClass() {
+		return primitiveClass;
+	}
+
+	public Object getDefaultValue() {
+		return defaultValue;
+	}
 
-  public Object getDefaultValue() {
-    return defaultValue;
-  }
 }

src/main/java/net/helenus/core/reflect/Drafted.java

@@ -1,28 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.reflect;
-
-import java.util.Set;
-
-public interface Drafted<T> extends MapExportable {
-
-  Set<String> mutated();
-
-  T build();
-
-  Set<String> read();
-}

src/main/java/net/helenus/core/reflect/DslExportable.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,18 +15,15 @@
  */
 package net.helenus.core.reflect;
 
-import com.datastax.driver.core.Metadata;
 import net.helenus.mapping.HelenusEntity;
 
 public interface DslExportable {
 
-  String GET_ENTITY_METHOD = "getHelenusMappingEntity";
+	public static final String GET_ENTITY_METHOD = "getHelenusMappingEntity";
-  String GET_PARENT_METHOD = "getParentDslHelenusPropertyNode";
+	public static final String GET_PARENT_METHOD = "getParentDslHelenusPropertyNode";
-  String SET_METADATA_METHOD = "setCassandraMetadataForHelenusSession";
 
-  HelenusEntity getHelenusMappingEntity();
+	HelenusEntity getHelenusMappingEntity();
 
-  HelenusPropertyNode getParentDslHelenusPropertyNode();
+	HelenusPropertyNode getParentDslHelenusPropertyNode();
 
-  void setCassandraMetadataForHelenusSession(Metadata metadata);
 }

src/main/java/net/helenus/core/reflect/DslInvocationHandler.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,14 +15,18 @@
  */
 package net.helenus.core.reflect;
 
-import com.datastax.driver.core.*;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
+
+import com.datastax.driver.core.*;
+
 import net.helenus.core.Helenus;
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.mapping.HelenusMappingEntity;
@@ -36,178 +39,144 @@ import net.helenus.support.HelenusException;
 
 public class DslInvocationHandler<E> implements InvocationHandler {
 
-  private final Class<E> iface;
+	private final HelenusEntity entity;
-  private final ClassLoader classLoader;
+	private final Optional<HelenusPropertyNode> parent;
-  private final Optional<HelenusPropertyNode> parent;
-  private final Map<Method, HelenusProperty> map = new HashMap<Method, HelenusProperty>();
-  private final Map<Method, Object> udtMap = new HashMap<Method, Object>();
-  private final Map<Method, Object> tupleMap = new HashMap<Method, Object>();
-  private HelenusEntity entity = null;
-  private Metadata metadata = null;
 
-  public DslInvocationHandler(
+	private final Map<Method, HelenusProperty> map = new HashMap<Method, HelenusProperty>();
-      Class<E> iface,
-      ClassLoader classLoader,
-      Optional<HelenusPropertyNode> parent,
-      Metadata metadata) {
 
-    this.metadata = metadata;
+	private final Map<Method, Object> udtMap = new HashMap<Method, Object>();
-    this.parent = parent;
+	private final Map<Method, Object> tupleMap = new HashMap<Method, Object>();
-    this.iface = iface;
-    this.classLoader = classLoader;
-  }
 
-  public void setCassandraMetadataForHelenusSession(Metadata metadata) {
+	public DslInvocationHandler(Class<E> iface, ClassLoader classLoader, Optional<HelenusPropertyNode> parent, Metadata metadata) {
-    if (metadata != null) {
-      this.metadata = metadata;
-      entity = init(metadata);
-    }
-  }
 
-  private HelenusEntity init(Metadata metadata) {
+		this.entity = new HelenusMappingEntity(iface, metadata);
-    HelenusEntity entity = new HelenusMappingEntity(iface, metadata);
+		this.parent = parent;
-    Collection<HelenusProperty> properties = entity.getOrderedProperties();
-    if (properties != null) {
-      for (HelenusProperty prop : properties) {
 
-        map.put(prop.getGetterMethod(), prop);
+		if (this.entity != null) {
+            for (HelenusProperty prop : entity.getOrderedProperties()) {
 
-        AbstractDataType type = prop.getDataType();
+                map.put(prop.getGetterMethod(), prop);
-        Class<?> javaType = prop.getJavaType();
 
-        if (type instanceof UDTDataType && !UDTValue.class.isAssignableFrom(javaType)) {
+                AbstractDataType type = prop.getDataType();
+                Class<?> javaType = prop.getJavaType();
 
-          Object childDsl =
+                if (type instanceof UDTDataType && !UDTValue.class.isAssignableFrom(javaType)) {
-              Helenus.dsl(
-                  javaType,
-                  classLoader,
-                  Optional.of(new HelenusPropertyNode(prop, parent)),
-                  metadata);
 
-          udtMap.put(prop.getGetterMethod(), childDsl);
+                    Object childDsl = Helenus.dsl(javaType, classLoader,
-        }
+                            Optional.of(new HelenusPropertyNode(prop, parent)), metadata);
 
-        if (type instanceof DTDataType) {
+                    udtMap.put(prop.getGetterMethod(), childDsl);
-          DTDataType dataType = (DTDataType) type;
+                }
 
-          if (dataType.getDataType() instanceof TupleType
+                if (type instanceof DTDataType) {
-              && !TupleValue.class.isAssignableFrom(javaType)) {
+                    DTDataType dataType = (DTDataType) type;
 
-            Object childDsl =
+                    if (dataType.getDataType() instanceof TupleType && !TupleValue.class.isAssignableFrom(javaType)) {
-                Helenus.dsl(
-                    javaType,
-                    classLoader,
-                    Optional.of(new HelenusPropertyNode(prop, parent)),
-                    metadata);
 
-            tupleMap.put(prop.getGetterMethod(), childDsl);
+                        Object childDsl = Helenus.dsl(javaType, classLoader,
-          }
+                                Optional.of(new HelenusPropertyNode(prop, parent)), metadata);
-        }
-      }
-    }
 
-    return entity;
+                        tupleMap.put(prop.getGetterMethod(), childDsl);
-  }
 
-  @Override
+                    }
-  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+                }
 
-    HelenusEntity entity = this.entity;
-    String methodName = method.getName();
-
-    if ("equals".equals(methodName) && method.getParameterCount() == 1) {
-      Object otherObj = args[0];
-      if (otherObj == null) {
-        return false;
-      }
-      if (Proxy.isProxyClass(otherObj.getClass())) {
-        return this == Proxy.getInvocationHandler(otherObj);
-      }
-      return false;
-    }
-
-    if (DslExportable.SET_METADATA_METHOD.equals(methodName)
-        && args.length == 1
-        && args[0] instanceof Metadata) {
-      if (metadata == null) {
-        this.setCassandraMetadataForHelenusSession((Metadata) args[0]);
-      }
-      return null;
-    }
-
-    if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
-      throw new HelenusException("invalid getter method " + method);
-    }
-
-    if ("hashCode".equals(methodName)) {
-      return hashCode();
-    }
-
-    if (DslExportable.GET_PARENT_METHOD.equals(methodName)) {
-      return parent.get();
-    }
-
-    if (entity == null) {
-      entity = init(metadata);
-    }
-
-    if ("toString".equals(methodName)) {
-      return entity.toString();
-    }
-
-    if (DslExportable.GET_ENTITY_METHOD.equals(methodName)) {
-      return entity;
-    }
-
-    HelenusProperty prop = map.get(method);
-    if (prop == null) {
-      prop = entity.getProperty(methodName);
-    }
-
-    if (prop != null) {
-
-      AbstractDataType type = prop.getDataType();
-
-      if (type instanceof UDTDataType) {
-
-        Object childDsl = udtMap.get(method);
-
-        if (childDsl != null) {
-          return childDsl;
-        }
-      }
-
-      if (type instanceof DTDataType) {
-        DTDataType dataType = (DTDataType) type;
-        DataType dt = dataType.getDataType();
-
-        switch (dt.getName()) {
-          case TUPLE:
-            Object childDsl = tupleMap.get(method);
-
-            if (childDsl != null) {
-              return childDsl;
             }
-
-            break;
-
-          case SET:
-            return new SetDsl(new HelenusPropertyNode(prop, parent));
-
-          case LIST:
-            return new ListDsl(new HelenusPropertyNode(prop, parent));
-
-          case MAP:
-            return new MapDsl(new HelenusPropertyNode(prop, parent));
-
-          default:
-            break;
         }
-      }
+	}
 
-      throw new DslPropertyException(new HelenusPropertyNode(prop, parent));
+	@Override
-    }
+	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+
+        String methodName = method.getName();
+
+		if ("equals".equals(methodName) && method.getParameterCount() == 1) {
+			Object otherObj = args[0];
+			if (otherObj == null) {
+				return false;
+			}
+			if (Proxy.isProxyClass(otherObj.getClass())) {
+				return this == Proxy.getInvocationHandler(otherObj);
+			}
+			return false;
+		}
+
+		if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
+			throw new HelenusException("invalid getter method " + method);
+		}
+
+		if ("hashCode".equals(methodName)) {
+			return hashCode();
+		}
+
+		if ("toString".equals(methodName)) {
+			return entity.toString();
+		}
+
+		if (DslExportable.GET_ENTITY_METHOD.equals(methodName)) {
+			return entity;
+		}
+
+		if (DslExportable.GET_PARENT_METHOD.equals(methodName)) {
+			return parent.get();
+		}
+
+
+		HelenusProperty prop = map.get(method);
+		if (prop == null) {
+		    prop = entity.getProperty(methodName);
+        }
+
+		if (prop != null) {
+
+			AbstractDataType type = prop.getDataType();
+
+			if (type instanceof UDTDataType) {
+
+				Object childDsl = udtMap.get(method);
+
+				if (childDsl != null) {
+					return childDsl;
+				}
+
+			}
+
+			if (type instanceof DTDataType) {
+				DTDataType dataType = (DTDataType) type;
+				DataType dt = dataType.getDataType();
+
+				switch (dt.getName()) {
+
+					case TUPLE :
+
+						Object childDsl = tupleMap.get(method);
+
+						if (childDsl != null) {
+							return childDsl;
+						}
+
+						break;
+
+					case SET :
+						return new SetDsl(new HelenusPropertyNode(prop, parent));
+
+					case LIST :
+						return new ListDsl(new HelenusPropertyNode(prop, parent));
+
+					case MAP :
+						return new MapDsl(new HelenusPropertyNode(prop, parent));
+
+					default :
+						break;
+
+				}
+
+			}
+
+			throw new DslPropertyException(new HelenusPropertyNode(prop, parent));
+		}
+
+		throw new HelenusException("invalid method call " + method);
+	}
 
-    throw new HelenusException("invalid method call " + method);
-  }
 }

src/main/java/net/helenus/core/reflect/Entity.java

@@ -1,73 +0,0 @@
-/*
- *      Copyright (C) 2015 The Casser Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
- *
- *   Licensed under the Apache License, Version 2.0 (the "License");
- *   you may not use this file except in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing, software
- *   distributed under the License is distributed on an "AS IS" BASIS,
- *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *   See the License for the specific language governing permissions and
- *   limitations under the License.
- */
-package net.helenus.core.reflect;
-
-import net.helenus.core.Getter;
-
-public interface Entity {
-  String WRITTEN_AT_METHOD = "writtenAt";
-  String TTL_OF_METHOD = "ttlOf";
-  String TOKEN_OF_METHOD = "tokenOf";
-
-    /**
-     * The write time for the property in question referenced by the getter.
-     *
-     * @param getter the property getter
-     * @return the timestamp associated with the property identified by the getter
-     */
-  default Long writtenAt(Getter getter) {
-    return 0L;
-  }
-
-    /**
-     * The write time for the property in question referenced by the property name.
-     *
-     * @param prop the name of a property in this entity
-     * @return the timestamp associated with the property identified by the property name if it exists
-     */
-  default Long writtenAt(String prop) {
-    return 0L;
-  };
-
-    /**
-     * The time-to-live for the property in question referenced by the getter.
-     *
-     * @param getter the property getter
-     * @return the time-to-live in seconds associated with the property identified by the getter
-     */
-  default Integer ttlOf(Getter getter) {
-    return 0;
-  };
-
-    /**
-     * The time-to-live for the property in question referenced by the property name.
-     *
-     * @param prop the name of a property in this entity
-     * @return the time-to-live in seconds associated with the property identified by the property name if it exists
-     */
-  default Integer ttlOf(String prop) {
-    return 0;
-  };
-
-    /**
-     * The token (partition identifier) for this entity which can change over time if
-     * the cluster grows or shrinks but should be stable otherwise.
-     *
-     * @return the token for the entity
-     */
-  default Long tokenOf() { return 0L; }
-}

src/main/java/net/helenus/core/reflect/HelenusNamedProperty.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,7 +19,9 @@ import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
 import java.util.Optional;
 import java.util.function.Function;
+
 import javax.validation.ConstraintValidator;
+
 import net.helenus.core.SessionRepository;
 import net.helenus.mapping.*;
 import net.helenus.mapping.type.AbstractDataType;
@@ -28,84 +29,77 @@ import net.helenus.support.HelenusMappingException;
 
 public final class HelenusNamedProperty implements HelenusProperty {
 
-  private final String name;
+	private final String name;
 
-  public HelenusNamedProperty(String name) {
+	public HelenusNamedProperty(String name) {
-    this.name = name;
+		this.name = name;
-  }
+	}
 
-  @Override
+	@Override
-  public HelenusEntity getEntity() {
+	public HelenusEntity getEntity() {
-    throw new HelenusMappingException("will never called");
+		throw new HelenusMappingException("will never called");
-  }
+	}
 
-  @Override
+	@Override
-  public String getPropertyName() {
+	public String getPropertyName() {
-    return name;
+		return name;
-  }
+	}
 
-  @Override
+	@Override
-  public Method getGetterMethod() {
+	public Method getGetterMethod() {
-    throw new HelenusMappingException("will never called");
+		throw new HelenusMappingException("will never called");
-  }
+	}
 
-  @Override
+	@Override
-  public IdentityName getColumnName() {
+	public IdentityName getColumnName() {
-    return IdentityName.of(name, false);
+		return IdentityName.of(name, false);
-  }
+	}
 
-  @Override
+	@Override
-  public Optional<IdentityName> getIndexName() {
+	public Optional<IdentityName> getIndexName() {
-    return Optional.empty();
+		return Optional.empty();
-  }
+	}
 
-  @Override
+	@Override
-  public boolean caseSensitiveIndex() {
+	public boolean caseSensitiveIndex() { return false; }
-    return false;
-  }
 
-  @Override
+	@Override
-  public boolean isIdempotent() {
+	public Class<?> getJavaType() {
-    return false;
+		throw new HelenusMappingException("will never called");
-  }
+	}
 
-  @Override
+	@Override
-  public Class<?> getJavaType() {
+	public AbstractDataType getDataType() {
-    throw new HelenusMappingException("will never called");
+		throw new HelenusMappingException("will never called");
-  }
+	}
 
-  @Override
+	@Override
-  public AbstractDataType getDataType() {
+	public ColumnType getColumnType() {
-    throw new HelenusMappingException("will never called");
+		return ColumnType.COLUMN;
-  }
+	}
 
-  @Override
+	@Override
-  public ColumnType getColumnType() {
+	public int getOrdinal() {
-    return ColumnType.COLUMN;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public int getOrdinal() {
+	public OrderingDirection getOrdering() {
-    return 0;
+		return OrderingDirection.ASC;
-  }
+	}
 
-  @Override
+	@Override
-  public OrderingDirection getOrdering() {
+	public Optional<Function<Object, Object>> getReadConverter(SessionRepository repository) {
-    return OrderingDirection.ASC;
+		return Optional.empty();
-  }
+	}
 
-  @Override
+	@Override
-  public Optional<Function<Object, Object>> getReadConverter(SessionRepository repository) {
+	public Optional<Function<Object, Object>> getWriteConverter(SessionRepository repository) {
-    return Optional.empty();
+		return Optional.empty();
-  }
+	}
 
-  @Override
+	@Override
-  public Optional<Function<Object, Object>> getWriteConverter(SessionRepository repository) {
+	public ConstraintValidator<? extends Annotation, ?>[] getValidators() {
-    return Optional.empty();
+		return MappingUtil.EMPTY_VALIDATORS;
-  }
+	}
-
-  @Override
-  public ConstraintValidator<? extends Annotation, ?>[] getValidators() {
-    return MappingUtil.EMPTY_VALIDATORS;
-  }
 }

src/main/java/net/helenus/core/reflect/HelenusPropertyNode.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -18,89 +17,92 @@ package net.helenus.core.reflect;
 
 import java.util.*;
 import java.util.stream.Collectors;
+
 import net.helenus.mapping.HelenusEntity;
 import net.helenus.mapping.HelenusProperty;
 
 public final class HelenusPropertyNode implements Iterable<HelenusProperty> {
 
-  private final HelenusProperty prop;
+	private final HelenusProperty prop;
-  private final Optional<HelenusPropertyNode> next;
+	private final Optional<HelenusPropertyNode> next;
 
-  public HelenusPropertyNode(HelenusProperty prop, Optional<HelenusPropertyNode> next) {
+	public HelenusPropertyNode(HelenusProperty prop, Optional<HelenusPropertyNode> next) {
-    this.prop = prop;
+		this.prop = prop;
-    this.next = next;
+		this.next = next;
-  }
+	}
 
-  public String getColumnName() {
+	public String getColumnName() {
-    if (next.isPresent()) {
+		if (next.isPresent()) {
 
-      List<String> columnNames = new ArrayList<String>();
+			List<String> columnNames = new ArrayList<String>();
-      for (HelenusProperty p : this) {
+			for (HelenusProperty p : this) {
-        columnNames.add(p.getColumnName().toCql(true));
+				columnNames.add(p.getColumnName().toCql(true));
-      }
+			}
-      Collections.reverse(columnNames);
+			Collections.reverse(columnNames);
 
-      if (prop instanceof HelenusNamedProperty) {
+			if (prop instanceof HelenusNamedProperty) {
-        int size = columnNames.size();
+				int size = columnNames.size();
-        StringBuilder str = new StringBuilder();
+				StringBuilder str = new StringBuilder();
-        for (int i = 0; i != size - 1; ++i) {
+				for (int i = 0; i != size - 1; ++i) {
-          if (str.length() != 0) {
+					if (str.length() != 0) {
-            str.append(".");
+						str.append(".");
-          }
+					}
-          str.append(columnNames.get(i));
+					str.append(columnNames.get(i));
-        }
+				}
-        str.append("[").append(columnNames.get(size - 1)).append("]");
+				str.append("[").append(columnNames.get(size - 1)).append("]");
-        return str.toString();
+				return str.toString();
-      } else {
+			} else {
-        return columnNames.stream().collect(Collectors.joining("."));
+				return columnNames.stream().collect(Collectors.joining("."));
-      }
+			}
-    } else {
+		} else {
-      return prop.getColumnName().toCql();
+			return prop.getColumnName().toCql();
-    }
+		}
-  }
+	}
 
-  public HelenusEntity getEntity() {
+	public HelenusEntity getEntity() {
-    if (next.isPresent()) {
+		if (next.isPresent()) {
-      HelenusProperty last = prop;
+			HelenusProperty last = prop;
-      for (HelenusProperty p : this) {
+			for (HelenusProperty p : this) {
-        last = p;
+				last = p;
-      }
+			}
-      return last.getEntity();
+			return last.getEntity();
-    } else {
+		} else {
-      return prop.getEntity();
+			return prop.getEntity();
-    }
+		}
-  }
+	}
 
-  public HelenusProperty getProperty() {
+	public HelenusProperty getProperty() {
-    return prop;
+		return prop;
-  }
+	}
 
-  public Optional<HelenusPropertyNode> getNext() {
+	public Optional<HelenusPropertyNode> getNext() {
-    return next;
+		return next;
-  }
+	}
 
-  public Iterator<HelenusProperty> iterator() {
+	public Iterator<HelenusProperty> iterator() {
-    return new PropertyNodeIterator(Optional.of(this));
+		return new PropertyNodeIterator(Optional.of(this));
-  }
+	}
 
-  private static class PropertyNodeIterator implements Iterator<HelenusProperty> {
+	private static class PropertyNodeIterator implements Iterator<HelenusProperty> {
 
-    private Optional<HelenusPropertyNode> next;
+		private Optional<HelenusPropertyNode> next;
 
-    public PropertyNodeIterator(Optional<HelenusPropertyNode> next) {
+		public PropertyNodeIterator(Optional<HelenusPropertyNode> next) {
-      this.next = next;
+			this.next = next;
-    }
+		}
 
-    @Override
+		@Override
-    public boolean hasNext() {
+		public boolean hasNext() {
-      return next.isPresent();
+			return next.isPresent();
-    }
+		}
+
+		@Override
+		public HelenusProperty next() {
+			HelenusPropertyNode node = next.get();
+			next = node.next;
+			return node.prop;
+		}
+
+	}
 
-    @Override
-    public HelenusProperty next() {
-      HelenusPropertyNode node = next.get();
-      next = node.next;
-      return node.prop;
-    }
-  }
 }

src/main/java/net/helenus/core/reflect/ListDsl.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,164 +16,165 @@
 package net.helenus.core.reflect;
 
 import java.util.*;
+
 import net.helenus.mapping.HelenusProperty;
 import net.helenus.support.DslPropertyException;
 import net.helenus.support.HelenusMappingException;
 
 public final class ListDsl<V> implements List<V> {
 
-  private final HelenusPropertyNode parent;
+	private final HelenusPropertyNode parent;
 
-  public ListDsl(HelenusPropertyNode parent) {
+	public ListDsl(HelenusPropertyNode parent) {
-    this.parent = parent;
+		this.parent = parent;
-  }
+	}
 
-  public HelenusPropertyNode getParent() {
+	public HelenusPropertyNode getParent() {
-    return parent;
+		return parent;
-  }
+	}
 
-  @Override
+	@Override
-  public V get(int index) {
+	public V get(int index) {
-    HelenusProperty prop = new HelenusNamedProperty(Integer.toString(index));
+		HelenusProperty prop = new HelenusNamedProperty(Integer.toString(index));
-    throw new DslPropertyException(new HelenusPropertyNode(prop, Optional.of(parent)));
+		throw new DslPropertyException(new HelenusPropertyNode(prop, Optional.of(parent)));
-  }
+	}
 
-  @Override
+	@Override
-  public int size() {
+	public int size() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return 0;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean isEmpty() {
+	public boolean isEmpty() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean contains(Object o) {
+	public boolean contains(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public Iterator<V> iterator() {
+	public Iterator<V> iterator() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public Object[] toArray() {
+	public Object[] toArray() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public <T> T[] toArray(T[] a) {
+	public <T> T[] toArray(T[] a) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean add(V e) {
+	public boolean add(V e) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean remove(Object o) {
+	public boolean remove(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean containsAll(Collection<?> c) {
+	public boolean containsAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean addAll(Collection<? extends V> c) {
+	public boolean addAll(Collection<? extends V> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean addAll(int index, Collection<? extends V> c) {
+	public boolean addAll(int index, Collection<? extends V> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean removeAll(Collection<?> c) {
+	public boolean removeAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean retainAll(Collection<?> c) {
+	public boolean retainAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public void clear() {
+	public void clear() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-  }
+	}
 
-  @Override
+	@Override
-  public V set(int index, V element) {
+	public V set(int index, V element) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public void add(int index, V element) {
+	public void add(int index, V element) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-  }
+	}
 
-  @Override
+	@Override
-  public V remove(int index) {
+	public V remove(int index) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public int indexOf(Object o) {
+	public int indexOf(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return 0;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public int lastIndexOf(Object o) {
+	public int lastIndexOf(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return 0;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public ListIterator<V> listIterator() {
+	public ListIterator<V> listIterator() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public ListIterator<V> listIterator(int index) {
+	public ListIterator<V> listIterator(int index) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public List<V> subList(int fromIndex, int toIndex) {
+	public List<V> subList(int fromIndex, int toIndex) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  private void throwShouldNeverCall() {
+	private void throwShouldNeverCall() {
-    throw new HelenusMappingException("should be never called");
+		throw new HelenusMappingException("should be never called");
-  }
+	}
 
-  @Override
+	@Override
-  public String toString() {
+	public String toString() {
-    return "ListDsl";
+		return "ListDsl";
-  }
+	}
 }

src/main/java/net/helenus/core/reflect/MapDsl.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,98 +19,100 @@ import java.util.Collection;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+
 import net.helenus.mapping.HelenusProperty;
 import net.helenus.support.DslPropertyException;
 import net.helenus.support.HelenusMappingException;
 
 public final class MapDsl<K, V> implements Map<K, V> {
 
-  private final HelenusPropertyNode parent;
+	private final HelenusPropertyNode parent;
 
-  public MapDsl(HelenusPropertyNode parent) {
+	public MapDsl(HelenusPropertyNode parent) {
-    this.parent = parent;
+		this.parent = parent;
-  }
+	}
 
-  public HelenusPropertyNode getParent() {
+	public HelenusPropertyNode getParent() {
-    return parent;
+		return parent;
-  }
+	}
 
-  @Override
+	@Override
-  public V get(Object key) {
+	public V get(Object key) {
-    HelenusProperty prop = new HelenusNamedProperty(key.toString());
+		HelenusProperty prop = new HelenusNamedProperty(key.toString());
-    throw new DslPropertyException(new HelenusPropertyNode(prop, Optional.of(parent)));
+		throw new DslPropertyException(new HelenusPropertyNode(prop, Optional.of(parent)));
-  }
+	}
 
-  @Override
+	@Override
-  public int size() {
+	public int size() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return 0;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean isEmpty() {
+	public boolean isEmpty() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean containsKey(Object key) {
+	public boolean containsKey(Object key) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean containsValue(Object value) {
+	public boolean containsValue(Object value) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public V put(K key, V value) {
+	public V put(K key, V value) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public V remove(Object key) {
+	public V remove(Object key) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public void putAll(Map<? extends K, ? extends V> m) {
+	public void putAll(Map<? extends K, ? extends V> m) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-  }
+	}
 
-  @Override
+	@Override
-  public void clear() {
+	public void clear() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-  }
+	}
 
-  @Override
+	@Override
-  public Set<K> keySet() {
+	public Set<K> keySet() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public Collection<V> values() {
+	public Collection<V> values() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public Set<java.util.Map.Entry<K, V>> entrySet() {
+	public Set<java.util.Map.Entry<K, V>> entrySet() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  private void throwShouldNeverCall() {
+	private void throwShouldNeverCall() {
-    throw new HelenusMappingException("should be never called");
+		throw new HelenusMappingException("should be never called");
-  }
+	}
+
+	@Override
+	public String toString() {
+		return "MapDsl";
+	}
 
-  @Override
-  public String toString() {
-    return "MapDsl";
-  }
 }

src/main/java/net/helenus/core/reflect/MapExportable.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,25 +16,11 @@
 package net.helenus.core.reflect;
 
 import java.util.Map;
-import java.util.Set;
-import net.helenus.core.Getter;
 
 public interface MapExportable {
-  String TO_MAP_METHOD = "toMap";
-  String TO_READ_SET_METHOD = "toReadSet";
-  String PUT_METHOD = "put";
 
-  Map<String, Object> toMap();
+	public static final String TO_MAP_METHOD = "toMap";
 
-  default Map<String, Object> toMap(boolean mutable) {
+	Map<String, Object> toMap();
-    return null;
-  }
 
-  default Set<String> toReadSet() {
-    return null;
-  }
-
-  default void put(String key, Object value) {}
-
-  default <T> void put(Getter<T> getter, T value) {}
 }

src/main/java/net/helenus/core/reflect/MapperInvocationHandler.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,279 +15,97 @@
  */
 package net.helenus.core.reflect;
 
-import com.google.common.collect.ImmutableList;
+import java.lang.invoke.MethodHandle;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ImmutableSet;
-import java.io.InvalidObjectException;
-import java.io.ObjectInputStream;
-import java.io.ObjectStreamException;
-import java.io.Serializable;
 import java.lang.invoke.MethodHandles;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
-import java.util.*;
+import java.util.Collections;
-import net.helenus.core.Getter;
+import java.util.Map;
-import net.helenus.core.Helenus;
+
-import net.helenus.core.cache.CacheUtil;
-import net.helenus.mapping.MappingUtil;
-import net.helenus.mapping.annotation.Transient;
-import net.helenus.mapping.value.ValueProviderMap;
 import net.helenus.support.HelenusException;
 
-public class MapperInvocationHandler<E> implements InvocationHandler, Serializable {
+public class MapperInvocationHandler<E> implements InvocationHandler {
-  private static final long serialVersionUID = -7044209982830584984L;
 
-  private Map<String, Object> src;
+	private final Map<String, Object> src;
-  private final Set<String> read = new HashSet<String>();
+	private final Class<E> iface;
-  private final Class<E> iface;
 
-  public MapperInvocationHandler(Class<E> iface, Map<String, Object> src) {
+	public MapperInvocationHandler(Class<E> iface, Map<String, Object> src) {
-    this.src = src;
+		this.src = src;
-    this.iface = iface;
+		this.iface = iface;
-  }
+	}
 
-  private Object invokeDefault(Object proxy, Method method, Object[] args) throws Throwable {
+	@Override
-    // NOTE: This is reflection magic to invoke (non-recursively) a default method
+	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-    // implemented on an interface
-    // that we've proxied (in ReflectionDslInstantiator). I found the answer in this
-    // article.
-    // https://zeroturnaround.com/rebellabs/recognize-and-conquer-java-proxies-default-methods-and-method-handles/
 
-    // First, we need an instance of a private inner-class found in MethodHandles.
+        if (method.isDefault()) {
-    Constructor<MethodHandles.Lookup> constructor =
+            // NOTE: This is reflection magic to invoke (non-recursively) a default method implemented on an interface
-        MethodHandles.Lookup.class.getDeclaredConstructor(Class.class, int.class);
+            // that we've proxied (in ReflectionDslInstantiator).  I found the answer in this article.
-    constructor.setAccessible(true);
+            // https://zeroturnaround.com/rebellabs/recognize-and-conquer-java-proxies-default-methods-and-method-handles/
 
-    // Now we need to lookup and invoke special the default method on the interface
+            // First, we need an instance of a private inner-class found in MethodHandles.
-    // class.
+            Constructor<MethodHandles.Lookup> constructor = MethodHandles.Lookup.class.getDeclaredConstructor(Class.class, int.class);
-    final Class<?> declaringClass = method.getDeclaringClass();
+            constructor.setAccessible(true);
-    Object result =
-        constructor
-            .newInstance(declaringClass, MethodHandles.Lookup.PRIVATE)
-            .unreflectSpecial(method, declaringClass)
-            .bindTo(proxy)
-            .invokeWithArguments(args);
-    return result;
-  }
 
-  private Object writeReplace() {
+            // Now we need to lookup and invoke special the default method on the interface class.
-    return new SerializationProxy<E>(this);
+            final Class<?> declaringClass = method.getDeclaringClass();
-  }
+            Object result = constructor.newInstance(declaringClass, MethodHandles.Lookup.PRIVATE)
-
+                            .unreflectSpecial(method, declaringClass)
-  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
+                            .bindTo(proxy)
-    throw new InvalidObjectException("Proxy required.");
+                            .invokeWithArguments(args);
-  }
+            return result;
-
-  @Override
-  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-
-    // Transient, default methods should simply be invoked as-is.
-    if (method.isDefault() && method.getDeclaredAnnotation(Transient.class) != null) {
-      return invokeDefault(proxy, method, args);
-    }
-
-    String methodName = method.getName();
-
-    if ("equals".equals(methodName) && method.getParameterCount() == 1) {
-      Object otherObj = args[0];
-      if (otherObj == null) {
-        return false;
-      }
-      if (Proxy.isProxyClass(otherObj.getClass())) {
-        if (this == Proxy.getInvocationHandler(otherObj)) {
-          return true;
         }
-      }
-      if (otherObj instanceof MapExportable) {
-        return MappingUtil.compareMaps((MapExportable) otherObj, src);
-      }
-      return false;
-    }
 
-    if (MapExportable.PUT_METHOD.equals(methodName) && method.getParameterCount() == 2) {
+		String methodName = method.getName();
-      final String key;
-      if (args[0] instanceof String) {
-        key = (String) args[0];
-      } else if (args[0] instanceof Getter) {
-        key = MappingUtil.resolveMappingProperty((Getter) args[0]).getProperty().getPropertyName();
-      } else {
-        key = null;
-      }
-      if (key != null) {
-        final Object value = (Object) args[1];
-        if (src instanceof ValueProviderMap) {
-          this.src = fromValueProviderMap(src);
-        }
-        src.put(key, value);
-      }
-      return null;
-    }
 
-    if (Entity.WRITTEN_AT_METHOD.equals(methodName) && method.getParameterCount() == 1) {
+		if ("equals".equals(methodName) && method.getParameterCount() == 1) {
-      final String key;
+			Object otherObj = args[0];
-      if (args[0] instanceof String) {
+			if (otherObj == null) {
-        key = CacheUtil.writeTimeKey((String) args[0]);
+				return false;
-      } else if (args[0] instanceof Getter) {
+			}
-        Getter getter = (Getter) args[0];
+			if (Proxy.isProxyClass(otherObj.getClass())) {
-        key =
+				return this == Proxy.getInvocationHandler(otherObj);
-            CacheUtil.writeTimeKey(
+			}
-                MappingUtil.resolveMappingProperty(getter)
+			return false;
-                    .getProperty()
+		}
-                    .getColumnName()
-                    .toCql(false));
-      } else {
-        return 0L;
-      }
-      Long v = (Long) src.get(key);
-      if (v != null) {
-        return v;
-      }
-      return 0L;
-    }
 
-    if (Entity.TOKEN_OF_METHOD.equals(methodName) && method.getParameterCount() == 0) {
+		if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
-        Long v = (Long) src.get("");
+			throw new HelenusException("invalid getter method " + method);
-        if (v != null) {
+		}
-            return v;
-        }
-        return 0L;
-    }
 
-    if (Entity.TTL_OF_METHOD.equals(methodName) && method.getParameterCount() == 1) {
+		if ("hashCode".equals(methodName)) {
-      final String key;
+			return hashCode();
-      if (args[0] instanceof String) {
+		}
-        key = CacheUtil.ttlKey((String) args[0]);
-      } else if (args[0] instanceof Getter) {
-        Getter getter = (Getter) args[0];
-        key =
-            CacheUtil.ttlKey(
-                MappingUtil.resolveMappingProperty(getter)
-                    .getProperty()
-                    .getColumnName()
-                    .toCql(false));
-      } else {
-        return 0;
-      }
-      int v[] = (int[]) src.get(key);
-      if (v != null) {
-        return v[0];
-      }
-      return 0;
-    }
 
-    if (MapExportable.TO_MAP_METHOD.equals(methodName)) {
+		if ("toString".equals(methodName)) {
-      if (method.getParameterCount() == 1 && args[0] instanceof Boolean) {
+			return iface.getSimpleName() + ": " + src.toString();
-        if ((boolean) args[0] == true) {
+		}
-          return fromValueProviderMap(src, true);
-        }
-      }
-      return Collections.unmodifiableMap(src);
-    }
 
-    if (MapExportable.TO_READ_SET_METHOD.equals(methodName)) {
+		if (MapExportable.TO_MAP_METHOD.equals(methodName)) {
-      return read;
+			return Collections.unmodifiableMap(src);
-    }
+		}
 
-    if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
+		Object value = src.get(methodName);
-      throw new HelenusException("invalid getter method " + method);
-    }
 
-    if ("hashCode".equals(methodName)) {
+		if (value == null) {
-      return hashCode();
-    }
 
-    if ("toString".equals(methodName)) {
+            Class<?> returnType = method.getReturnType();
-      return iface.getSimpleName() + ": " + src.toString();
-    }
 
-    if ("writeReplace".equals(methodName)) {
+			if (returnType.isPrimitive()) {
-      return new SerializationProxy(this);
-    }
 
-    if ("readObject".equals(methodName)) {
+				DefaultPrimitiveTypes type = DefaultPrimitiveTypes.lookup(returnType);
-      throw new InvalidObjectException("Proxy required.");
+				if (type == null) {
-    }
+					throw new HelenusException("unknown primitive type " + returnType);
+				}
 
-    if ("dsl".equals(methodName)) {
+				return type.getDefaultValue();
-      return Helenus.dsl(iface);
-    }
 
-    final Object value = src.get(methodName);
+			}
-    read.add(methodName);
 
-    if (value == null) {
+		}
 
-      Class<?> returnType = method.getReturnType();
+		return value;
+	}
 
-      // Default implementations of non-Transient methods in entities are the default
-      // value when the map contains 'null'.
-      if (method.isDefault()) {
-        return invokeDefault(proxy, method, args);
-      }
-
-      // Otherwise, if the return type of the method is a primitive Java type then
-      // we'll return the standard default values to avoid a NPE in user code.
-      if (returnType.isPrimitive()) {
-        DefaultPrimitiveTypes type = DefaultPrimitiveTypes.lookup(returnType);
-        if (type == null) {
-          throw new HelenusException("unknown primitive type " + returnType);
-        }
-        return type.getDefaultValue();
-      }
-    }
-
-    return value;
-  }
-
-  static Map<String, Object> fromValueProviderMap(Map v) {
-    return fromValueProviderMap(v, false);
-  }
-
-  static Map<String, Object> fromValueProviderMap(Map v, boolean mutable) {
-    if (v instanceof ValueProviderMap) {
-      Map<String, Object> m = new HashMap<String, Object>(v.size());
-      Set<String> keys = v.keySet();
-      for (String key : keys) {
-        Object value = v.get(key);
-        if (value != null && mutable) {
-          if (ImmutableList.class.isAssignableFrom(value.getClass())) {
-            m.put(key, new ArrayList((List) value));
-          } else if (ImmutableMap.class.isAssignableFrom(value.getClass())) {
-            m.put(key, new HashMap((Map) value));
-          } else if (ImmutableSet.class.isAssignableFrom(value.getClass())) {
-            m.put(key, new HashSet((Set) value));
-          } else {
-            m.put(key, value);
-          }
-        } else {
-          m.put(key, value);
-        }
-      }
-      return m;
-    }
-    return v;
-  }
-
-  static class SerializationProxy<E> implements Serializable {
-
-    private static final long serialVersionUID = -5617583940055969353L;
-
-    private final Class<E> iface;
-    private final Map<String, Object> src;
-
-    public SerializationProxy(MapperInvocationHandler mapper) {
-      this.iface = mapper.iface;
-      if (mapper.src instanceof ValueProviderMap) {
-        this.src = fromValueProviderMap(mapper.src);
-      } else {
-        this.src = mapper.src;
-      }
-    }
-
-    Object readResolve() throws ObjectStreamException {
-      return new MapperInvocationHandler(iface, src);
-    }
-  }
 }

src/main/java/net/helenus/core/reflect/ReflectionDslInstantiator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,25 +15,22 @@
  */
 package net.helenus.core.reflect;
 
-import com.datastax.driver.core.Metadata;
 import java.lang.reflect.Proxy;
 import java.util.Optional;
+
+import com.datastax.driver.core.Metadata;
 import net.helenus.core.DslInstantiator;
 
 public enum ReflectionDslInstantiator implements DslInstantiator {
-  INSTANCE;
 
-  @Override
+	INSTANCE;
-  @SuppressWarnings("unchecked")
+
-  public <E> E instantiate(
+	@Override
-      Class<E> iface,
+	@SuppressWarnings("unchecked")
-      ClassLoader classLoader,
+	public <E> E instantiate(Class<E> iface, ClassLoader classLoader, Optional<HelenusPropertyNode> parent, Metadata metadata) {
-      Optional<HelenusPropertyNode> parent,
+		DslInvocationHandler<E> handler = new DslInvocationHandler<E>(iface, classLoader, parent, metadata);
-      Metadata metadata) {
+		E proxy = (E) Proxy.newProxyInstance(classLoader, new Class[]{iface, DslExportable.class}, handler);
-    DslInvocationHandler<E> handler =
+		return proxy;
-        new DslInvocationHandler<E>(iface, classLoader, parent, metadata);
+	}
-    E proxy =
+
-        (E) Proxy.newProxyInstance(classLoader, new Class[] {iface, DslExportable.class}, handler);
-    return proxy;
-  }
 }

src/main/java/net/helenus/core/reflect/ReflectionInstantiator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -20,14 +19,17 @@ import net.helenus.support.HelenusMappingException;
 
 public final class ReflectionInstantiator {
 
-  private ReflectionInstantiator() {}
+	private ReflectionInstantiator() {
+	}
 
-  public static <T> T instantiateClass(Class<T> clazz) {
+	public static <T> T instantiateClass(Class<T> clazz) {
+
+		try {
+			return clazz.newInstance();
+		} catch (InstantiationException | IllegalAccessException e) {
+			throw new HelenusMappingException("invalid class " + clazz, e);
+		}
+
+	}
 
-    try {
-      return clazz.newInstance();
-    } catch (InstantiationException | IllegalAccessException e) {
-      throw new HelenusMappingException("invalid class " + clazz, e);
-    }
-  }
 }

src/main/java/net/helenus/core/reflect/ReflectionMapperInstantiator.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -16,23 +15,23 @@
  */
 package net.helenus.core.reflect;
 
-import java.io.Serializable;
 import java.lang.reflect.Proxy;
 import java.util.Map;
+
 import net.helenus.core.MapperInstantiator;
 
 public enum ReflectionMapperInstantiator implements MapperInstantiator {
-  INSTANCE;
 
-  @Override
+	INSTANCE;
-  @SuppressWarnings("unchecked")
+
-  public <E> E instantiate(Class<E> iface, Map<String, Object> src, ClassLoader classLoader) {
+	@Override
+	@SuppressWarnings("unchecked")
+	public <E> E instantiate(Class<E> iface, Map<String, Object> src, ClassLoader classLoader) {
+
+		MapperInvocationHandler<E> handler = new MapperInvocationHandler<E>(iface, src);
+		E proxy = (E) Proxy.newProxyInstance(classLoader, new Class[]{iface, MapExportable.class}, handler);
+		return proxy;
+
+	}
 
-    MapperInvocationHandler<E> handler = new MapperInvocationHandler<E>(iface, src);
-    E proxy =
-        (E)
-            Proxy.newProxyInstance(
-                classLoader, new Class[] {iface, MapExportable.class, Serializable.class}, handler);
-    return proxy;
-  }
 }

src/main/java/net/helenus/core/reflect/SetDsl.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -19,103 +18,104 @@ package net.helenus.core.reflect;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.Set;
+
 import net.helenus.support.HelenusMappingException;
 
 public final class SetDsl<V> implements Set<V> {
 
-  private final HelenusPropertyNode parent;
+	private final HelenusPropertyNode parent;
 
-  public SetDsl(HelenusPropertyNode parent) {
+	public SetDsl(HelenusPropertyNode parent) {
-    this.parent = parent;
+		this.parent = parent;
-  }
+	}
 
-  public HelenusPropertyNode getParent() {
+	public HelenusPropertyNode getParent() {
-    return parent;
+		return parent;
-  }
+	}
 
-  @Override
+	@Override
-  public int size() {
+	public int size() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return 0;
+		return 0;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean isEmpty() {
+	public boolean isEmpty() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean contains(Object o) {
+	public boolean contains(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public Iterator<V> iterator() {
+	public Iterator<V> iterator() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public Object[] toArray() {
+	public Object[] toArray() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public <T> T[] toArray(T[] a) {
+	public <T> T[] toArray(T[] a) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return null;
+		return null;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean add(V e) {
+	public boolean add(V e) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean remove(Object o) {
+	public boolean remove(Object o) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean containsAll(Collection<?> c) {
+	public boolean containsAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean addAll(Collection<? extends V> c) {
+	public boolean addAll(Collection<? extends V> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean retainAll(Collection<?> c) {
+	public boolean retainAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public boolean removeAll(Collection<?> c) {
+	public boolean removeAll(Collection<?> c) {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-    return false;
+		return false;
-  }
+	}
 
-  @Override
+	@Override
-  public void clear() {
+	public void clear() {
-    throwShouldNeverCall();
+		throwShouldNeverCall();
-  }
+	}
 
-  private void throwShouldNeverCall() {
+	private void throwShouldNeverCall() {
-    throw new HelenusMappingException("should be never called");
+		throw new HelenusMappingException("should be never called");
-  }
+	}
 
-  @Override
+	@Override
-  public String toString() {
+	public String toString() {
-    return "SetDsl";
+		return "SetDsl";
-  }
+	}
 }

src/main/java/net/helenus/mapping/ColumnInformation.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,6 +16,7 @@
 package net.helenus.mapping;
 
 import java.lang.reflect.Method;
+
 import net.helenus.mapping.annotation.ClusteringColumn;
 import net.helenus.mapping.annotation.Column;
 import net.helenus.mapping.annotation.PartitionKey;
@@ -25,99 +25,93 @@ import net.helenus.support.HelenusMappingException;
 
 public final class ColumnInformation {
 
-  private final IdentityName columnName;
+	private final IdentityName columnName;
-  private final ColumnType columnType;
+	private final ColumnType columnType;
-  private final int ordinal;
+	private final int ordinal;
-  private final OrderingDirection ordering;
+	private final OrderingDirection ordering;
 
-  public ColumnInformation(Method getter) {
+	public ColumnInformation(Method getter) {
 
-    String columnName = null;
+		String columnName = null;
-    boolean forceQuote = false;
+		boolean forceQuote = false;
-    ColumnType columnTypeLocal = ColumnType.COLUMN;
+		ColumnType columnTypeLocal = ColumnType.COLUMN;
-    int ordinalLocal = 0;
+		int ordinalLocal = 0;
-    OrderingDirection orderingLocal = OrderingDirection.ASC;
+		OrderingDirection orderingLocal = OrderingDirection.ASC;
 
-    PartitionKey partitionKey = getter.getDeclaredAnnotation(PartitionKey.class);
+		PartitionKey partitionKey = getter.getDeclaredAnnotation(PartitionKey.class);
-    if (partitionKey != null) {
+		if (partitionKey != null) {
-      columnName = partitionKey.value();
+			columnName = partitionKey.value();
-      forceQuote = partitionKey.forceQuote();
+			forceQuote = partitionKey.forceQuote();
-      columnTypeLocal = ColumnType.PARTITION_KEY;
+			columnTypeLocal = ColumnType.PARTITION_KEY;
-      ordinalLocal = partitionKey.ordinal();
+			ordinalLocal = partitionKey.ordinal();
-    }
+		}
 
-    ClusteringColumn clusteringColumn = getter.getDeclaredAnnotation(ClusteringColumn.class);
+		ClusteringColumn clusteringColumn = getter.getDeclaredAnnotation(ClusteringColumn.class);
-    if (clusteringColumn != null) {
+		if (clusteringColumn != null) {
-      ensureSingleColumnType(columnTypeLocal, getter);
+			ensureSingleColumnType(columnTypeLocal, getter);
-      columnName = clusteringColumn.value();
+			columnName = clusteringColumn.value();
-      forceQuote = clusteringColumn.forceQuote();
+			forceQuote = clusteringColumn.forceQuote();
-      columnTypeLocal = ColumnType.CLUSTERING_COLUMN;
+			columnTypeLocal = ColumnType.CLUSTERING_COLUMN;
-      ordinalLocal = clusteringColumn.ordinal();
+			ordinalLocal = clusteringColumn.ordinal();
-      orderingLocal = clusteringColumn.ordering();
+			orderingLocal = clusteringColumn.ordering();
-    }
+		}
 
-    StaticColumn staticColumn = getter.getDeclaredAnnotation(StaticColumn.class);
+		StaticColumn staticColumn = getter.getDeclaredAnnotation(StaticColumn.class);
-    if (staticColumn != null) {
+		if (staticColumn != null) {
-      ensureSingleColumnType(columnTypeLocal, getter);
+			ensureSingleColumnType(columnTypeLocal, getter);
-      columnName = staticColumn.value();
+			columnName = staticColumn.value();
-      forceQuote = staticColumn.forceQuote();
+			forceQuote = staticColumn.forceQuote();
-      columnTypeLocal = ColumnType.STATIC_COLUMN;
+			columnTypeLocal = ColumnType.STATIC_COLUMN;
-      ordinalLocal = staticColumn.ordinal();
+			ordinalLocal = staticColumn.ordinal();
-    }
+		}
 
-    Column column = getter.getDeclaredAnnotation(Column.class);
+		Column column = getter.getDeclaredAnnotation(Column.class);
-    if (column != null) {
+		if (column != null) {
-      ensureSingleColumnType(columnTypeLocal, getter);
+			ensureSingleColumnType(columnTypeLocal, getter);
-      columnName = column.value();
+			columnName = column.value();
-      forceQuote = column.forceQuote();
+			forceQuote = column.forceQuote();
-      columnTypeLocal = ColumnType.COLUMN;
+			columnTypeLocal = ColumnType.COLUMN;
-      ordinalLocal = column.ordinal();
+			ordinalLocal = column.ordinal();
-    }
+		}
 
-    if (columnName == null || columnName.isEmpty()) {
+		if (columnName == null || columnName.isEmpty()) {
-      columnName = MappingUtil.getDefaultColumnName(getter);
+			columnName = MappingUtil.getDefaultColumnName(getter);
-    }
+		}
 
-    this.columnName = new IdentityName(columnName, forceQuote);
+		this.columnName = new IdentityName(columnName, forceQuote);
-    this.columnType = columnTypeLocal;
+		this.columnType = columnTypeLocal;
-    this.ordinal = ordinalLocal;
+		this.ordinal = ordinalLocal;
-    this.ordering = orderingLocal;
+		this.ordering = orderingLocal;
-  }
+	}
 
-  public IdentityName getColumnName() {
+	public IdentityName getColumnName() {
-    return columnName;
+		return columnName;
-  }
+	}
 
-  public ColumnType getColumnType() {
+	public ColumnType getColumnType() {
-    return columnType;
+		return columnType;
-  }
+	}
 
-  public int getOrdinal() {
+	public int getOrdinal() {
-    return ordinal;
+		return ordinal;
-  }
+	}
 
-  public OrderingDirection getOrdering() {
+	public OrderingDirection getOrdering() {
-    return ordering;
+		return ordering;
-  }
+	}
 
-  private void ensureSingleColumnType(ColumnType columnTypeLocal, Method getter) {
+	private void ensureSingleColumnType(ColumnType columnTypeLocal, Method getter) {
 
-    if (columnTypeLocal != ColumnType.COLUMN) {
+		if (columnTypeLocal != ColumnType.COLUMN) {
-      throw new HelenusMappingException(
+			throw new HelenusMappingException("property can be annotated only by a single column type " + getter);
-          "property can be annotated only by a single column type " + getter);
+		}
-    }
+
-  }
+	}
+
+	@Override
+	public String toString() {
+		return "ColumnInformation [columnName=" + columnName + ", columnType=" + columnType + ", ordinal=" + ordinal
+				+ ", ordering=" + ordering + "]";
+	}
 
-  @Override
-  public String toString() {
-    return "ColumnInformation [columnName="
-        + columnName
-        + ", columnType="
-        + columnType
-        + ", ordinal="
-        + ordinal
-        + ", ordering="
-        + ordering
-        + "]";
-  }
 }

src/main/java/net/helenus/mapping/ColumnType.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,8 +16,5 @@
 package net.helenus.mapping;
 
 public enum ColumnType {
-  PARTITION_KEY,
+	PARTITION_KEY, CLUSTERING_COLUMN, STATIC_COLUMN, COLUMN;
-  CLUSTERING_COLUMN,
-  STATIC_COLUMN,
-  COLUMN;
 }

src/main/java/net/helenus/mapping/HelenusEntity.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,24 +16,19 @@
 package net.helenus.mapping;
 
 import java.util.Collection;
-import java.util.List;
-import net.helenus.core.cache.Facet;
 
 public interface HelenusEntity {
 
-  HelenusEntityType getType();
+	HelenusEntityType getType();
 
-  boolean isCacheable();
+	boolean isCacheable();
 
-  Class<?> getMappingInterface();
+	Class<?> getMappingInterface();
 
-  IdentityName getName();
+	IdentityName getName();
 
-  Collection<HelenusProperty> getOrderedProperties();
+	Collection<HelenusProperty> getOrderedProperties();
 
-  HelenusProperty getProperty(String name);
+	HelenusProperty getProperty(String name);
 
-  List<Facet> getFacets();
-
-  boolean isDraftable();
 }

src/main/java/net/helenus/mapping/HelenusEntityType.java

@@ -1,6 +1,5 @@
 /*
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
@@ -17,8 +16,5 @@
 package net.helenus.mapping;
 
 public enum HelenusEntityType {
-  TABLE,
+	TABLE, TUPLE, UDT;
-  VIEW,
-  TUPLE,
-  UDT;
 }

src/main/java/net/helenus/mapping/HelenusMappingEntity.java

@@ -1,7 +1,6 @@
 /*
  *
- *      Copyright (C) 2015 The Casser Authors
+ *      Copyright (C) 2015 The Helenus Authors
- *      Copyright (C) 2015-2018 The Helenus Authors
  *   Licensed under the Apache License, Version 2.0 (the "License");
  *   you may not use this file except in compliance with the License.
  *   You may obtain a copy of the License at
@@ -16,356 +15,256 @@
  */
 package net.helenus.mapping;
 
-import com.datastax.driver.core.DefaultMetadata;
-import com.datastax.driver.core.Metadata;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
 import java.lang.reflect.Method;
 import java.util.*;
-import javax.validation.ConstraintValidator;
+
+import com.datastax.driver.core.*;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.reflect.TypeToken;
 import net.helenus.config.HelenusSettings;
 import net.helenus.core.Helenus;
 import net.helenus.core.annotation.Cacheable;
-import net.helenus.core.cache.Facet;
-import net.helenus.core.cache.UnboundFacet;
 import net.helenus.mapping.annotation.*;
-import net.helenus.mapping.validator.DistinctValidator;
 import net.helenus.support.HelenusMappingException;
-import org.apache.commons.lang3.ClassUtils;
-import org.apache.commons.lang3.StringUtils;
 
 public final class HelenusMappingEntity implements HelenusEntity {
 
-  private final Class<?> iface;
+	private final Class<?> iface;
-  private final HelenusEntityType type;
+	private final HelenusEntityType type;
-  private final IdentityName name;
+	private final IdentityName name;
-  private final boolean cacheable;
+	private final boolean cacheable;
-  private final boolean draftable;
+	private final ImmutableMap<String, Method> methods;
-  private final ImmutableMap<String, Method> methods;
+	private final ImmutableMap<String, HelenusProperty> props;
-  private final ImmutableMap<String, HelenusProperty> props;
+	private final ImmutableList<HelenusProperty> orderedProps;
-  private final ImmutableList<HelenusProperty> orderedProps;
-  private final List<Facet> facets;
 
-  public HelenusMappingEntity(Class<?> iface, Metadata metadata) {
+	public HelenusMappingEntity(Class<?> iface, Metadata metadata) {
-    this(iface, autoDetectType(iface), metadata);
+		this(iface, autoDetectType(iface), metadata);
-  }
+	}
 
-  public HelenusMappingEntity(Class<?> iface, HelenusEntityType type, Metadata metadata) {
+	public HelenusMappingEntity(Class<?> iface, HelenusEntityType type, Metadata metadata) {
 
-    if (iface == null || !iface.isInterface()) {
+		if (iface == null || !iface.isInterface()) {
-      throw new IllegalArgumentException("invalid parameter " + iface);
+			throw new IllegalArgumentException("invalid parameter " + iface);
-    }
+		}
 
-    this.iface = iface;
+		this.iface = iface;
-    this.type = Objects.requireNonNull(type, "type is empty");
+		this.type = Objects.requireNonNull(type, "type is empty");
-    this.name = resolveName(iface, type);
+		this.name = resolveName(iface, type);
 
-    HelenusSettings settings = Helenus.settings();
+		HelenusSettings settings = Helenus.settings();
 
-    Map<String, Method> methods = new HashMap<String, Method>();
-    for (Method m : iface.getDeclaredMethods()) {
-      methods.put(m.getName(), m);
-    }
 
-    for (Class<?> c : ClassUtils.getAllInterfaces(iface)) {
+		List<Method> methods = new ArrayList<Method>();
-      if (c.getDeclaredAnnotation(Table.class) != null
+
-          || c.getDeclaredAnnotation(InheritedTable.class) != null) {
+        methods.addAll(Arrays.asList(iface.getDeclaredMethods()));
-        for (Method m : c.getDeclaredMethods()) {
+		for (Class<?> c : iface.getInterfaces()) {
-          Method o = methods.get(m.getName());
+            methods.addAll(Arrays.asList(c.getDeclaredMethods()));
-          if (o != null) {
-            // Prefer overridden method implementation.
-            if (o.getDeclaringClass().isAssignableFrom(m.getDeclaringClass())) {
-              methods.put(m.getName(), m);
-            }
-          } else {
-            methods.put(m.getName(), m);
-          }
         }
-      }
-    }
 
-    List<HelenusProperty> propsLocal = new ArrayList<HelenusProperty>();
+		List<HelenusProperty> propsLocal = new ArrayList<HelenusProperty>();
-    ImmutableMap.Builder<String, HelenusProperty> propsBuilder = ImmutableMap.builder();
+		ImmutableMap.Builder<String, HelenusProperty> propsBuilder = ImmutableMap.builder();
-    ImmutableMap.Builder<String, Method> methodsBuilder = ImmutableMap.builder();
+		ImmutableMap.Builder<String, Method> methodsBuilder = ImmutableMap.builder();
 
-    for (Method method : methods.values()) {
+		for (Method method : methods) {
 
-      if (settings.getGetterMethodDetector().apply(method)) {
+			if (settings.getGetterMethodDetector().apply(method)) {
 
-        methodsBuilder.put(method.getName(), method);
+				methodsBuilder.put(method.getName(), method);
 
-        if (metadata != null) {
+				if (metadata != null) {
-          HelenusProperty prop = new HelenusMappingProperty(this, method, metadata);
+					HelenusProperty prop = new HelenusMappingProperty(this, method, metadata);
 
-          propsBuilder.put(prop.getPropertyName(), prop);
+					propsBuilder.put(prop.getPropertyName(), prop);
-          propsLocal.add(prop);
+					propsLocal.add(prop);
+				}
+
+			}
+
+		}
+
+		this.methods = methodsBuilder.build();
+		this.props = propsBuilder.build();
+
+		Collections.sort(propsLocal, TypeAndOrdinalColumnComparator.INSTANCE);
+		this.orderedProps = ImmutableList.copyOf(propsLocal);
+
+		validateOrdinals();
+
+		cacheable = (null != iface.getDeclaredAnnotation(Cacheable.class));
+	}
+
+	@Override
+	public HelenusEntityType getType() {
+		return type;
+	}
+
+	@Override
+	public boolean isCacheable() {
+		return cacheable;
+	}
+
+	@Override
+	public Class<?> getMappingInterface() {
+		return iface;
+	}
+
+	@Override
+	public Collection<HelenusProperty> getOrderedProperties() {
+		return orderedProps;
+	}
+
+	@Override
+	public HelenusProperty getProperty(String name) {
+	    HelenusProperty property = props.get(name);
+	    if (property == null && methods.containsKey(name)) {
+            property = new HelenusMappingProperty(this, methods.get(name), new DefaultMetadata());
+            return property; //TODO(gburd): review adding these into the props map...
         }
-      }
+		return props.get(name);
-    }
+	}
 
-    this.methods = methodsBuilder.build();
+	@Override
-    this.props = propsBuilder.build();
+	public IdentityName getName() {
+		return name;
+	}
 
-    Collections.sort(propsLocal, TypeAndOrdinalColumnComparator.INSTANCE);
+	private static IdentityName resolveName(Class<?> iface, HelenusEntityType type) {
-    this.orderedProps = ImmutableList.copyOf(propsLocal);
 
-    validateOrdinals();
+		switch (type) {
 
-    // Caching
+			case TABLE :
-    cacheable = (null != iface.getDeclaredAnnotation(Cacheable.class));
+				return MappingUtil.getTableName(iface, true);
 
-    // Draft
+			case TUPLE :
-    Class<?> draft;
+				return IdentityName.of(MappingUtil.getDefaultEntityName(iface), false);
-    try {
-      draft = Class.forName(iface.getName() + "$Draft");
-    } catch (Exception ignored) {
-      draft = null;
-    }
-    draftable = (draft != null);
 
-    // Materialized view
+			case UDT :
-    List<HelenusProperty> primaryKeyProperties = new ArrayList<>();
+				return MappingUtil.getUserDefinedTypeName(iface, true);
-    ImmutableList.Builder<Facet> facetsBuilder = ImmutableList.builder();
+		}
-    if (iface.getDeclaredAnnotation(MaterializedView.class) == null) {
-      facetsBuilder.add(new Facet("table", name.toCql()).setFixed());
-    } else {
-      facetsBuilder.add(
-          new Facet("table", Helenus.entity(iface.getInterfaces()[0]).getName().toCql())
-              .setFixed());
-    }
-    for (HelenusProperty prop : orderedProps) {
-      switch (prop.getColumnType()) {
-        case PARTITION_KEY:
-        case CLUSTERING_COLUMN:
-          primaryKeyProperties.add(prop);
-          break;
-        default:
-          if (primaryKeyProperties != null && primaryKeyProperties.size() > 0) {
-            facetsBuilder.add(new UnboundFacet(primaryKeyProperties));
-            primaryKeyProperties = null;
-          }
-          for (ConstraintValidator<?, ?> constraint :
-              MappingUtil.getValidators(prop.getGetterMethod())) {
-            if (constraint instanceof DistinctValidator) {
-              DistinctValidator validator = (DistinctValidator) constraint;
-              String[] values = validator.constraintAnnotation.value();
-              UnboundFacet facet;
-              if (values != null && values.length >= 1 && !(StringUtils.isBlank(values[0]))) {
-                List<HelenusProperty> props = new ArrayList<HelenusProperty>(values.length + 1);
-                props.add(prop);
-                for (String value : values) {
-                  for (HelenusProperty p : orderedProps) {
-                    String name = p.getPropertyName();
-                    if (name.equals(value) && !name.equals(prop.getPropertyName())) {
-                      props.add(p);
-                    }
-                  }
-                }
-                facet = new UnboundFacet(props, validator.alone(), validator.combined());
-              } else {
-                facet = new UnboundFacet(prop, validator.alone(), validator.combined());
-              }
-              facetsBuilder.add(facet);
-              break;
-            }
-          }
-      }
-    }
-    if (primaryKeyProperties != null && primaryKeyProperties.size() > 0) {
-      facetsBuilder.add(new UnboundFacet(primaryKeyProperties));
-    }
-    this.facets = facetsBuilder.build();
-  }
 
-  private static IdentityName resolveName(Class<?> iface, HelenusEntityType type) {
+		throw new HelenusMappingException("invalid entity type " + type + " in " + type);
 
-    switch (type) {
+	}
-      case TABLE:
-        return MappingUtil.getTableName(iface, true);
 
-      case VIEW:
+	private static HelenusEntityType autoDetectType(Class<?> iface) {
-        return MappingUtil.getViewName(iface, true);
 
-      case TUPLE:
+		Objects.requireNonNull(iface, "empty iface");
-        return IdentityName.of(MappingUtil.getDefaultEntityName(iface), false);
 
-      case UDT:
+		if (null != iface.getDeclaredAnnotation(Table.class)) {
-        return MappingUtil.getUserDefinedTypeName(iface, true);
+			return HelenusEntityType.TABLE;
-    }
+		}
 
-    throw new HelenusMappingException("invalid entity type " + type + " in " + type);
+		else if (null != iface.getDeclaredAnnotation(Tuple.class)) {
-  }
+			return HelenusEntityType.TUPLE;
+		}
 
-  private static HelenusEntityType autoDetectType(Class<?> iface) {
+		else if (null != iface.getDeclaredAnnotation(UDT.class)) {
+			return HelenusEntityType.UDT;
+		}
 
-    Objects.requireNonNull(iface, "empty iface");
+		throw new HelenusMappingException("entity must be annotated by @Table or @Tuple or @UserDefinedType " + iface);
+	}
 
-    if (null != iface.getDeclaredAnnotation(Table.class)) {
+	private void validateOrdinals() {
-      return HelenusEntityType.TABLE;
-    } else if (null != iface.getDeclaredAnnotation(MaterializedView.class)) {
-      return HelenusEntityType.VIEW;
-    } else if (null != iface.getDeclaredAnnotation(Tuple.class)) {
-      return HelenusEntityType.TUPLE;
-    } else if (null != iface.getDeclaredAnnotation(UDT.class)) {
-      return HelenusEntityType.UDT;
-    }
 
-    throw new HelenusMappingException(
+		switch (getType()) {
-        "entity must be annotated by @Table or @Tuple or @UserDefinedType " + iface);
-  }
 
-  @Override
+			case TABLE :
-  public HelenusEntityType getType() {
+				validateOrdinalsForTable();
-    return type;
+				break;
-  }
 
-  @Override
+			case TUPLE :
-  public boolean isCacheable() {
+				validateOrdinalsInTuple();
-    return cacheable;
+				break;
-  }
 
-  @Override
+			default :
-  public boolean isDraftable() {
+				break;
-    return draftable;
+		}
-  }
 
-  @Override
+	}
-  public Class<?> getMappingInterface() {
-    return iface;
-  }
 
-  @Override
+	private void validateOrdinalsForTable() {
-  public Collection<HelenusProperty> getOrderedProperties() {
-    return orderedProps;
-  }
 
-  @Override
+		BitSet partitionKeys = new BitSet();
-  public HelenusProperty getProperty(String name) {
+		BitSet clusteringColumns = new BitSet();
-    HelenusProperty property = props.get(name);
-    if (property == null && methods.containsKey(name)) {
-      property = new HelenusMappingProperty(this, methods.get(name), new DefaultMetadata());
-      return property; // TODO(gburd): review adding these into the props map...
-    }
-    return props.get(name);
-  }
 
-  @Override
+		for (HelenusProperty prop : getOrderedProperties()) {
-  public List<Facet> getFacets() {
-    return facets;
-  }
 
-  @Override
+			ColumnType type = prop.getColumnType();
-  public IdentityName getName() {
-    return name;
-  }
 
-  private void validateOrdinals() {
+			int ordinal = prop.getOrdinal();
 
-    switch (getType()) {
+			switch (type) {
-      case TABLE:
-        validateOrdinalsForTable();
-        break;
 
-      case TUPLE:
+				case PARTITION_KEY :
-        validateOrdinalsInTuple();
+					if (partitionKeys.get(ordinal)) {
-        break;
+						throw new HelenusMappingException(
+								"detected two or more partition key columns with the same ordinal " + ordinal + " in "
+										+ prop.getEntity());
+					}
+					partitionKeys.set(ordinal);
+					break;
 
-      default:
+				case CLUSTERING_COLUMN :
-        break;
+					if (clusteringColumns.get(ordinal)) {
-    }
+						throw new HelenusMappingException("detected two or clustering columns with the same ordinal "
-  }
+								+ ordinal + " in " + prop.getEntity());
+					}
+					clusteringColumns.set(ordinal);
+					break;
 
-  private void validateOrdinalsForTable() {
+				default :
+					break;
+			}
 
-    BitSet partitionKeys = new BitSet();
+		}
-    BitSet clusteringColumns = new BitSet();
 
-    for (HelenusProperty prop : getOrderedProperties()) {
+	}
 
-      ColumnType type = prop.getColumnType();
+	private void validateOrdinalsInTuple() {
+		boolean[] ordinals = new boolean[props.size()];
 
-      int ordinal = prop.getOrdinal();
+		getOrderedProperties().forEach(p -> {
 
-      switch (type) {
+			int ordinal = p.getOrdinal();
-        case PARTITION_KEY:
-          if (partitionKeys.get(ordinal)) {
-            throw new HelenusMappingException(
-                "detected two or more partition key columns with the same ordinal "
-                    + ordinal
-                    + " in "
-                    + prop.getEntity());
-          }
-          partitionKeys.set(ordinal);
-          break;
 
-        case CLUSTERING_COLUMN:
+			if (ordinal < 0 || ordinal >= ordinals.length) {
-          if (clusteringColumns.get(ordinal)) {
+				throw new HelenusMappingException("invalid ordinal " + ordinal + " found for property "
-            throw new HelenusMappingException(
+						+ p.getPropertyName() + " in " + p.getEntity());
-                "detected two or clustering columns with the same ordinal "
+			}
-                    + ordinal
-                    + " in "
-                    + prop.getEntity());
-          }
-          clusteringColumns.set(ordinal);
-          break;
 
-        default:
+			if (ordinals[ordinal]) {
-          break;
+				throw new HelenusMappingException(
-      }
+						"detected two or more properties with the same ordinal " + ordinal + " in " + p.getEntity());
-    }
+			}
-  }
 
-  private void validateOrdinalsInTuple() {
+			ordinals[ordinal] = true;
-    boolean[] ordinals = new boolean[props.size()];
 
-    getOrderedProperties()
+		});
-        .forEach(
-            p -> {
-              int ordinal = p.getOrdinal();
 
-              if (ordinal < 0 || ordinal >= ordinals.length) {
+		for (int i = 0; i != ordinals.length; ++i) {
-                throw new HelenusMappingException(
+			if (!ordinals[i]) {
-                    "invalid ordinal "
+				throw new HelenusMappingException("detected absent ordinal " + i + " in " + this);
-                        + ordinal
+			}
-                        + " found for property "
+		}
-                        + p.getPropertyName()
-                        + " in "
-                        + p.getEntity());
-              }
 
-              if (ordinals[ordinal]) {
+	}
-                throw new HelenusMappingException(
-                    "detected two or more properties with the same ordinal "
-                        + ordinal
-                        + " in "
-                        + p.getEntity());
-              }
 
-              ordinals[ordinal] = true;
+	@Override
-            });
+	public String toString() {
 
-    for (int i = 0; i != ordinals.length; ++i) {
+		StringBuilder str = new StringBuilder();
-      if (!ordinals[i]) {
+		str.append(iface.getSimpleName()).append("(").append(name.getName()).append(") ")
-        throw new HelenusMappingException("detected absent ordinal " + i + " in " + this);
+				.append(type.name().toLowerCase()).append(":\n");
-      }
-    }
-  }
 
-  @Override
+		for (HelenusProperty prop : getOrderedProperties()) {
-  public String toString() {
+			str.append(prop.toString());
+			str.append("\n");
+		}
+		return str.toString();
+	}
 
-    StringBuilder str = new StringBuilder();
-    str.append(iface.getSimpleName())
-        .append("(")
-        .append(name.getName())
-        .append(") ")
-        .append(type.name().toLowerCase())
-        .append(":\n");
-
-    for (HelenusProperty prop : getOrderedProperties()) {
-      str.append(prop.toString());
-      str.append("\n");
-    }
-    return str.toString();
-  }
 }