hibernate cascade - update child to null -

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i have 1 many relationship between event , session. i'd cascade update event fk in session null when delete corresponding event. clue how this? , advance.

hibernate or jpa unfortunately don't have cascade type 'set null' should able @preremove

on 1 side (owner):

@onetomany(mappedby="whatever") public list<someentity> getsomeentity(){     return someentity; }  @preremove public void ondelete(){     for(someentity se : getsomeentity()){         se.setowner(null);      } }

hope helps.


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