如何使hibernate根据外键来删除数据？

[chenglix]

我有一个Customer类和Order类，两者是一对多关系。当我删除一个Customer对象，并级联删除与Customer关联的Order对象时，控制台输出了如下sql语句：
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?
Hibernate: delete from TABLE_ORDER where id=?


要怎样配置才能让hibernate能按照如下方式级联删除与Customer关联的Order对象呢：
delete from TABLE_ORDER where customerId=?

[Fly_m]

@OneToMany(cascade=CascadeType.ALL)
这样应该是按照你要求的那样吧。或者，你在删除之前调用一下
getXXXList().removeAll()这样的方法

[bijanen19861113]

不知道你是否使用了注解，如果用了注解，看看1楼说的试试，如果没有使用注解，而且你不想自己在程序中写代码的话，可以在他们的映射关系(比如one-to-many等)中加上配置，cascade="delete"