[英]Delete entries from collection of objects using stateless session in hibernate
可能嗎? 我嘗試通過這種方式進行操作,但不起作用:
StatelessSession sess = getSessionFactory().openStatelessSession();
sess.beginTransaction();
MessageDetails md = (MessageDetails) sess.get(MessageDetails.class,1189469L);
md.setCc(null);
sess.update(md);
sess.getTransaction().commit();
sess.close();
cc是這樣定義的:
@ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinTable(name = "MessageEntryCc")
public Set<EmailAndName> getCc() {
return cc;
}
運行代碼后,MessageEntryCc仍然包含message_details_id = 1189469 ...
請將CascadeType=DELETE_ORPHAN
以及您的映射添加為:
@ManyToMany(fetch = FetchType.LAZY,
cascade={CascadeType.ALL, CascadeType.DELETE_ORPHAN})
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