0

可悲的是，我找不到解决当前问题的方法。（如果我错过了什么，请发布链接）

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抛出异常？

您需要有关代码的更多信息吗？

4

1 回答 1

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没关系...错误是由损坏的数据引起的...

于 2020-03-06T09:54:11.247 回答