61 lines
1.2 KiB
Markdown
61 lines
1.2 KiB
Markdown
# casser 
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Java 8 Cassandra Client
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### Features
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* Leverages Java 8 language capabilities to build CQL queries
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* Simple function-style API
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### Requirements
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* Only JVM 8
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* Datastax Driver
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* Maven
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### Example
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Entity definition:
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```
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@Table("timelines")
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public interface Timeline {
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@PartitionKey
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UUID getUserId();
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void setUserId(UUID uid);
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@ClusteringColumn
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@DataTypeName(Name.TIMEUUID)
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Date getTimestamp();
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void setTimestamp(Date ts);
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@Column
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String getText();
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void setText(String text);
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}
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```
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Session initialization:
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```
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Timeline timeline = Casser.dsl(Timeline.class);
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CasserSession session = Casser.init(getSession()).showCql().add(Timeline.class).autoCreateDrop().get();
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```
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Select information:
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```
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session.select(timeline::getUserId, timeline::getTimestamp, timeline::getText)
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.where(timeline::getUserId, "==", userId)
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.orderBy(timeline::getTimestamp, "desc").limit(5).sync()
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.forEach(System.out::println);
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```
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Insert information:
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```
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Timeline post = Casser.pojo(Timeline.class);
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post.setUserId(userId);
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post.setTimestamp(new Date(postTime+1000L*i));
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post.setText("hello");
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session.upsert(post).sync();
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```
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