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From Bengt Rodehav <>
Subject Re: Audit log with OpenJPA
Date Fri, 08 Jul 2011 07:59:41 GMT

Can you point me to where I can find documentation about acessing the entity
manager from the life cycle callbacks? Will it be supported in OpenJPA in
the future? Can I rely on it?


2011/7/8 Pinaki Poddar <>

> > you actually store it in the object itself.
> That's right. This allows in-memory rollback.
> Given that the entire 'clean' or 'original' state is available in the
> technique I described, the application can make several decisions on
> a) what should be logged in an audit trail -- the entire object in a
> separate database/schema, a serialized blob or a JSON stream or whatever.
> b) because the technique is based on OpenJPA internal, if an application
> decides to take the 'blue pill', then it can simply ask the managed object
> which fields have been 'dirtied' if it requires to compute delta
> efficiently.
> Another related but separate point:
> I have noticed lot of requests/annoyance from the users on the limitation
> of
> callback listener methods having no access to the persistence context.
> Again, in OpenJPA runtime, the managed entity does know its persistence
> context. If the application is ready for a OpenJPA-specific  cast, then the
> handle to the persistence context is right there in the entity.
> -----
> Pinaki
> --
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