Hi
When I didn't you transactions in NH I was able to check if there ware any changes during session (edit/del/add) by calling IsDirty(). But when I started to use transactions I noticed that IsDirty() almost always returns false (and it should, because FlushMode is Auto).

Is there any good way to check if there were any changes during transaction (from open or last commit) ?? My guess now is that I should track functions called by GUI.

Hibernate version:
1.2

If you want to know what has been flushed (but not committed), you could implement IInterceptor.PostFlush(). The method is passed a collection of entities. However, I seem to recall that all entities in the session are passed, whether they were dirty or not. We do our own dirty tracking within our entities, so we can check the dirty status in IInterceptor.PreFlush() and IInterceptor.PostFlush(), and so that we can reset it in IInterceptor.PostFlush().

Well, I'm quite lazy, so I didn't mess with "functions in GUI" and I found the Interceptors on my own. But I didn't use PostFlush(). Instead I changed a flag in OnSave/OnUpdate/etc (isDataChanged = true).

Your way seems more clever but my already works :)

Andrew

The problem you might find with your approach is that OnSave is only called when the entity is saved for the first time and OnUpdate is only called when a disconnected entity is re-attached to the session. As a result if you make changes to a loaded object while it remains attached to a session you won't know whether or not it's changed.

Cheers,

Symon.

Apparently you didn't noticed the "etc" in my statement ;)

To be clear, I change flag isDataChanged=true in: OnDelete, OnFlushDirty, OnSave.
And isDataChanged=false in: AfterTransactionBegin, AfterTransactionCompletion, SetSession (in case there's no transaction).

Andrew

*chuckle*

Looks like you're on top of it.

Cheers,

Symon.