MySQL NDB Cluster API Developer Guide
Annotation for a group of columns. This annotation is used for multi-column structures such as indexes and keys.
@Target(value={java.lang.annotation.ElementType.FIELD, java.lang.annotation.ElementType.METHOD, java.lang.annotation.ElementType.TYPE}) @Retention(value=java.lang.annotation.RetentionPolicy.RUNTIME) public @interface Columns {public Column[] value ;
}