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MySQL NDB Cluster API Developer Guide
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4.3.2.15 Projection

Annotation on a type to define it as a projection of a table. Only the columns mapped to persistent fields/methods will be used when performing operations on the table.

4.3.2.15.1 Synopsis
 @Target(value=java.lang.annotation.ElementType.TYPE) @Retention(value=java.lang.annotation.RetentionPolicy.RUNTIME) public @interface Projection {
}