MySQL NDB Cluster API 开发人员指南 / 第 4 章 MySQL NDB Cluster Connector for Java / 4.3 ClusterJ API 参考 / 4.3.2 com.mysql.clusterj.注解 /
4.3.2.2 Columns
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 ;
}