It looks to me like the the collection snapshot that can be obtained by casting a collection to PersistentCollection is taken every time the session is flushed and is a record of the state of the collection right before it was updated.

I need the record of the state of the collection before it was updated, so I'm wondering if a) I'm right about the use of the collection snapshot and b) the snapshot functionality is likely to change soon.

Thanks very much,
Hans

Do NOT do this. I change internal Hibernate interfaces whenever I feel like it!

Ok, thanks. Is there any good way to get the pre-update state of a collection (the state at the last load/flush) from within Interceptor.onFlushDirty/onDelete? Obviously I can save the state myself in onLoad and postFlush but that would take some extra memory that I though I might be able to save.

Hans