implement wrapper to replace Casser.pojo

src/main/java/casser/config/CasserSettings.java

@@ -19,6 +19,7 @@ import java.lang.reflect.Method;
 import java.util.function.Function;
 
 import casser.core.Instantiator;
+import casser.core.WrapperInstantiator;
 
 public interface CasserSettings {
 
@@ -33,5 +34,7 @@ public interface CasserSettings {
 	Instantiator getDslInstantiator();
 
 	Instantiator getPojoInstantiator();
+	
+	WrapperInstantiator getWrapperInstantiator();
 
 }

src/main/java/casser/config/DefaultCasserSettings.java

@@ -19,8 +19,10 @@ import java.lang.reflect.Method;
 import java.util.function.Function;
 
 import casser.core.Instantiator;
+import casser.core.WrapperInstantiator;
 import casser.core.reflect.ReflectionDslInstantiator;
 import casser.core.reflect.ReflectionPojoInstantiator;
+import casser.core.reflect.ReflectionWrapperInstantiator;
 import casser.mapping.convert.CamelCaseToUnderscoreConverter;
 import casser.mapping.convert.MethodNameToPropertyConverter;
 
@@ -56,6 +58,9 @@ public class DefaultCasserSettings implements CasserSettings {
 		return ReflectionPojoInstantiator.INSTANCE;
 	}
 
-	
+	@Override
-	
+	public WrapperInstantiator getWrapperInstantiator() {
+		return ReflectionWrapperInstantiator.INSTANCE;
+	}
+
 }

src/main/java/casser/core/Casser.java

@@ -15,15 +15,12 @@
  */
 package casser.core;
 
-import java.lang.reflect.Proxy;
+import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 
 import casser.config.CasserSettings;
 import casser.config.DefaultCasserSettings;
-import casser.core.reflect.DslInvocationHandler;
-import casser.core.reflect.PojoInvocationHandler;
-import casser.mapping.convert.UDTValueWritable;
 
 import com.datastax.driver.core.Cluster;
 import com.datastax.driver.core.Session;
@@ -97,5 +94,13 @@ public final class Casser {
 	public static <E> E pojo(Class<E> iface, ClassLoader classLoader) {
 		return settings.getPojoInstantiator().instantiate(iface, classLoader);
 	}
+	
+	public static <E> E wrap(Map<String, Object> map, Class<E> iface) {
+		return wrap(map, iface, iface.getClassLoader());
+	}
+
+	public static <E> E wrap(Map<String, Object> map, Class<E> iface, ClassLoader classLoader) {
+		return settings.getWrapperInstantiator().instantiate(map, iface, classLoader);
+	}
 
 }

src/main/java/casser/core/WrapperInstantiator.java

@@ -0,0 +1,24 @@
+/*
+ *      Copyright (C) 2015 Noorq, Inc.
+ *
+ *   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 casser.core;
+
+import java.util.Map;
+
+public interface WrapperInstantiator {
+
+	 <E> E instantiate(Map<String, Object> map, Class<E> iface, ClassLoader classLoader);
+	 
+}

src/main/java/casser/core/reflect/ReflectionWrapperInstantiator.java

@@ -0,0 +1,44 @@
+/*
+ *      Copyright (C) 2015 Noorq, Inc.
+ *
+ *   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 casser.core.reflect;
+
+import java.lang.reflect.Proxy;
+import java.util.Map;
+
+import casser.core.WrapperInstantiator;
+import casser.mapping.MapExportable;
+
+public enum ReflectionWrapperInstantiator implements WrapperInstantiator {
+
+	INSTANCE;
+
+	@Override
+	@SuppressWarnings("unchecked")
+	public <E> E instantiate(Map<String, Object> map, Class<E> iface,
+			ClassLoader classLoader) {
+
+		WrapperInvocationHandler<E> handler = new WrapperInvocationHandler<E>(map, iface);
+		E proxy = (E) Proxy.newProxyInstance(
+		                            classLoader,
+		                            new Class[] { iface, MapExportable.class },
+		                            handler);
+		return proxy;
+
+	}
+	
+	
+	
+}

src/main/java/casser/core/reflect/WrapperInvocationHandler.java

@@ -0,0 +1,76 @@
+/*
+ *      Copyright (C) 2015 Noorq, Inc.
+ *
+ *   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 casser.core.reflect;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.Map;
+
+import casser.mapping.MapExportable;
+import casser.support.CasserException;
+
+public class WrapperInvocationHandler<E> implements InvocationHandler {
+
+	private final Map<String, Object> map;
+	private final Class<E> iface;
+	
+	public WrapperInvocationHandler(Map<String, Object> map, Class<E> iface) {
+		this.map = map;
+		this.iface = iface;
+	}
+	
+	@Override
+	public Object invoke(Object proxy, Method method, Object[] args)
+			throws Throwable {
+		
+		if (method.getParameterCount() != 0 || method.getReturnType() == void.class) {
+			throw new CasserException("invalid getter method " + method);
+		}
+		
+		String methodName = method.getName();
+		
+		if ("toString".equals(methodName)) {
+			return "Wrapper:" + iface + ":" + map.toString();
+		}
+
+		if (MapExportable.TO_MAP_METHOD.equals(methodName)) {
+			return Collections.unmodifiableMap(map);
+		}
+
+		Object value = map.get(methodName);
+		
+		if (value == null) {
+			
+			Class<?> returnType = method.getReturnType();
+			
+			if (returnType.isPrimitive()) {
+				
+				DefaultPrimitiveTypes type = DefaultPrimitiveTypes.lookup(returnType);
+				if (type == null) {
+					throw new CasserException("unknown primitive type " + returnType);
+				}
+				
+				return type.getDefaultValue();
+				
+			}
+			
+		}
+		
+		return value;
+	}
+	
+}

src/main/java/casser/mapping/MapExportable.java

@@ -0,0 +1,26 @@
+/*
+ *      Copyright (C) 2015 Noorq, Inc.
+ *
+ *   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 casser.mapping;
+
+import java.util.Map;
+
+public interface MapExportable {
+
+	public static final String TO_MAP_METHOD = "toMap";
+	
+	Map<String, Object> toMap();
+	
+}

src/test/java/casser/test/unit/core/dsl/Account.java

@@ -15,17 +15,14 @@
  */
 package casser.test.unit.core.dsl;
 
+import casser.mapping.MapExportable;
 import casser.mapping.Table;
 
 @Table
-public interface Account {
+public interface Account extends MapExportable {
 
-	String getId();
+	Long id();
 	
-	void setId(String acc);
+	boolean active();
-	
-	boolean isActive();
-
-	void setActive(boolean a);
 	
 }

src/test/java/casser/test/unit/core/dsl/DslTest.java

@@ -29,12 +29,14 @@ public class DslTest {
 		
 		System.out.println("account = " + account);
 		
+		/*
 		try {
-			account.getId();
+			account.id();
 		}
 		catch(DslPropertyException e) {
 			System.out.println(e.getProperty());
 		}
+		*/
 		
 	}
 	

src/test/java/casser/test/unit/core/dsl/WrapperTest.java

@@ -15,44 +15,52 @@
  */
 package casser.test.unit.core.dsl;
 
+import java.util.HashMap;
+import java.util.Map;
+
 import org.junit.Assert;
 import org.junit.Test;
 
 import casser.core.Casser;
 import casser.support.CasserException;
 
-public class PojoTest {
+public class WrapperTest {
-
-	Account account = Casser.pojo(Account.class);
 	
 	@Test
-	public void testObject() throws Exception {
+	public void testWrap() throws Exception {
 		
-		Assert.assertNull(account.getId());
+		Map<String, Object> map = new HashMap<String, Object>();
+	
+		map.put("id", 123L);
+		map.put("active", Boolean.TRUE);
+		map.put("unknownField", "he-he");
 		
-		account.setId("testAcc");
+		Account account = Casser.wrap(map, Account.class);
-
+		
-		Assert.assertEquals("testAcc", account.getId());
+		Assert.assertEquals(Long.valueOf(123L), account.id());
-
+		Assert.assertTrue(account.active());
 		
 	}
 	
 	@Test
 	public void testPrimitive() throws Exception {
 		
-		Assert.assertFalse(account.isActive());
+		Map<String, Object> map = new HashMap<String, Object>();
 		
-		account.setActive(true);
+		map.put("id", 123L);
-
-		Assert.assertEquals(true, account.isActive());
-
 		
+		Account account = Casser.wrap(map, Account.class);
+		
+		Assert.assertFalse(account.active());
+				
 	}
 	
 	@Test(expected=CasserException.class)
 	public void testWrongMethods() throws Exception {
 		
-		Casser.pojo(WrongAccount.class);
+		WrongAccount wrongAccount = Casser.wrap(new HashMap<String, Object>(), WrongAccount.class);
+		
+		wrongAccount.id();
 
 	}
 	

src/test/java/casser/test/unit/core/dsl/WrongAccount.java

@@ -17,6 +17,6 @@ package casser.test.unit.core.dsl;
 
 public interface WrongAccount {
 
-	void getId();
+	void id();
 	
 }