Hello!

I guess this question might have been asked a lot but I just couldn't find where.
So, I have one-to-many relation between Data and Link (one Data - many Links). I want to ensure that when all the Links that reference a Data are deleted, the Data will be removed as well.
Is there a way to declare such behaviour in Hibernate?
I tried to use callback method on remove of Link and check whether the linked Data still has more Links but I was not able to get the callback method called.
I have the following data model:

LinkBase class
Link extends LinkBase (Joined inheritance) and has a Data

I have the following method in both Link and LinkBase:

The code that I actually test with is:


It seems I have 2 questions in this topic and I think I must be missing something really basic for both of them.

Any help is appreciated!
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Guess you should post more info, if you want anybody to help you. Hibernate version, mappings and so on ...

Hibernate Core 3.2.2
Hibernate Annotations 3.2.1

There is nothing special in mapping. Actually I am asking how to make the mapping so that non-associated objects on the One side of the relations get deleted by Hibernate, if this is possible at all.
On the callback part:



It seems pretty straightforward to me.
Of course, I will post any other part that could help solve my problem.

Jana,

There is CascadeType.Remove as well, did you try this.

Regards,
Kurt

cascade="all-delete-orphan"

delete-orphan will make sure children are removed when the parent is removed.

Thanks for the answers but what I want is:

When all children are removed, the parent to be removed too. That is, no parent to exist without children.
I know about delete_orphan bit I want the other way around.

Currently I have implemented this with interceptor that checks children being deleted and if this is the last child, deletes the parent.
But I am not sure this is the proper way to go.