Hibernate中配置级联删除

首先，要在建表SQL中加入对级联删除的支持

CREATE TABLE `voteitem` (
  `id` varchar(50) NOT NULL default '',
  `title` varchar(50) default NULL,
  `votenum` varchar(50) default NULL,
  `vote_id` varchar(50) NOT NULL,
  PRIMARY KEY  (`id`),
  KEY `vote_id` (`vote_id`),
  CONSTRAINT `voteitem_ibfk_1` FOREIGN KEY (`vote_id`) REFERENCES `vote` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=gb2312 ROW_FORMAT=COMPRESSED;

其次，在hibernate mapping文件中设置cascade

<set name="voteitems" cascade="delete" order-by="title asc" inverse="true">
        <key column="vote_id"></key>
        <one-to-many class="Voteitems"/>
     </set>