我刚刚在做部门模块，结果在部门树形结构下想删除某个节点，一带把他的子节点也删除了，但如何设置都发现删除不了，会报出错误：
- Cannot delete or update a parent row: a foreign key constraint fails
(`oa`.`department`, CONSTRAINT `FK_rll3cq4b2ghx2lmgj6c31o70m` FOREIGN KEY
(`parentDept_id`) REFERENCES `department` (`id`))
- could not execute statement
- could not execute statement; SQL [n/a]; constraint [null]; nested
exception is org.hibernate.exception.ConstraintViolationException: could not
execute statement
我在实体上设置了级联操作了：
@OneToMany(mappedBy="parentDept",cascade=CascadeType.REMOVE,fetch=FetchType.EAGER)
public
Set<Department> getChildDepts() {
return childDepts;
}
不管我设置的是ALL还是REMOVE都不行，请各位大神求教？
hibernate4的级联删除为什么不行啊？,布布扣,bubuko.com
hibernate4的级联删除为什么不行啊？
原文：http://www.cnblogs.com/yhiloon/p/3656458.html
