Flush during cascade is dangerous

dyn · **Joined:** Wed Aug 27, 2003 7:53 am **Posts:** 27

Ok, somehow I've run across this. I got a couple of (8) entities mapped in various associations (uni- and bidirectional, one-to-many and one many-to-many mappings, plus 2 subclass mappings out of the 8 entities). I use no transactions, and I mapped most of the association with cascade="all" (our business model dictates so).

Now, when I try to do a plain session.delete (hibernateObject), I get the following exception:

Code:

net.sf.hibernate.HibernateException: Flush during cascade is dangerous - this might occur if an object was deleted and then re-saved by cascade
   at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2001)
   at net.sf.hibernate.impl.SessionImpl.save(SessionImpl.java:589)
   at net.sf.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:1187)
..

I'd like to know exactly what this error means, usually when it happens, and what should I do to avoid it.. ofc I'd share all details if needed when this problem aint that much typical as I think it is..

thanks,
dyn

gavin · **Posted:** Tue Sep 02, 2003 11:16 am

You must remove a deleted object from any associations mapped with cascade. Or the object will be re-saved at flushtime, which causes problems.

dyn · **Joined:** Wed Aug 27, 2003 7:53 am **Posts:** 27

oh well.. I knew it must be something typical. Thanks for the clarification!