How do you handle CMR with non-nullable fields and not using cascade-delete? 

I have three beans A, B and C. A is 1:1 with B and 1:many with C. The foreign 
key in A that represents B is non-nullable (obviously, no fields exists in A 
that represents C). Now I create a record in A and C, then delete A (the record 
in C points to the record in A).

For the A-C relationship, I use batch-cascade-delete. So from the logs, it says 
"Scheduled for batch-cascade-delete". So there is no problem there. 

For the A-B relationship, the container is setting the relevent field to NULL - 
this causes a foreign key violation error.

Is there any way to handle this generally? Can I postpone the NULL setting 
action (preferably never to be done, as the entity is about to disappear)? Or 
do I have to abandon CMR (I cannot change the database - besides, it makes no 
sense to)?

Thanks,

Ian 



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