hibernate的top vote bug被我遇到了

最新推荐文章于 2025-07-02 11:31:15 发布

最新推荐文章于 2025-07-02 11:31:15 发布 · 103 阅读

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#Hibernate #OpenSource

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本文探讨了Hibernate中懒加载(m:nrelation+EventListener)机制与AssertionFailure错误的关系，特别是当尝试在preUpdate或postUpdate事件中修改对象状态时的问题。作者建议使用findDirty或getOldState方法来仅触碰已更改的属性。

(lazy) m:n relation + EventListener = AssertionFailure: collection [n-side] was not processed by flush()

链接：
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2763

hibernate的event系统和它原有的机制有点区别.....如果想通过preUpdate or PostUpdate去修改原先的值,还是不要了，因为这样lazy就不能用了.....

这哥们总结的好:
My conclusion was, that you have not to change the state of the current object in the current session within events.
But if you want only use changed attributes - use the findDirty() (ore something called like this)(实际上是getOldState()) to touch only changed (and loaded) attributes.