具有多个级别的休眠级联删除

Question

很遗憾，我找不到解决当前问题的方法。（如果我遗漏了什么，请post一个link）

我有一个多层实体结构如下

class Parent {

    @OneToMany(
            mappedBy = "parent",
            cascade = CascadeType.ALL,
            orphanRemoval = true
    )
    private Set<ChildA> setOfChildA = new HashSet<>();

    @OneToMany( fetch = FetchType.EAGER, mappedBy = "parent", cascade = CascadeType.ALL, orphanRemoval = true )
    private Set<ChildB> setOfChildB = new HashSet<>();
}

class ChildB {
    @OneToMany( fetch = FetchType.LAZY, mappedBy = "childb", cascade = CascadeType.ALL, orphanRemoval = true )
    private Set<grandchild> grandchild = new HashSet<>();
}

当我添加 Parent.setOfChildA 和添加 ChildB.grandchild 并且只保存父实体时，一切正常。

但是当我删除 Parent.setOfChildA 和删除一些 ChildB.grandchild 时，我得到以下异常

.m.m.a.ExceptionHandlerExceptionResolver : Resolved [org.springframework.orm.jpa.JpaSystemException: Batch update returned unexpected row count from update [0]; actual row count: 2; expected: 1; nested exception is org.hibernate.jdbc.BatchedTooManyRowsAffectedException: Batch update returned unexpected row count from update [0]; actual row count: 2; expected: 1]

Hibernate 记录以下 sql 语句

delete 
        from
            tbl_childa
        where
            childa_linkparentid=? 
            and childa_linkotherentityid=?
delete 
        from
            tbl_grandchild
        where
            grandchild_id=? 
            and grandchild_version=?

有谁知道为什么添加有效但删除会抛出异常？

您需要有关代码的更多信息吗？

Answer 1

没关系...错误是由损坏的数据引起的...

具有多个级别的休眠级联删除

hibernate cascading delete with multiple levels

java

hibernate

jpa

hibernate-cascade