Hibernate version: 2.0 GA

... proxied class. I am running in situation that I need to get reference to instance of a proxy when I have reference to a proxied object. I am adding a LoadCollection listener, and collection.Owner is a proxied class and instance of owner is proxy, so when I do bidirectional relationship synchronization this might fail

Assert.IsTrue(ReferenceEquals(invoice, invoice.lineItems[1].invoice)

because the "invoice" is a proxy and invoice.lineItems[1].invoice is the instance of the collection.Owner. Since I have real class I wonder if I could look up somehow what is the proxy instance for it.

We are running into the same problem.

To describe the problem in broader terms: for entity classes that pass on a reference to itself ("this") through method calls or events, whenever an instance of that class gets proxied, outside code gets a reference to the inner entity that the proxy forwards to.

With my particular problem and exp2000's, it happens during bidirectional relationship sychronization (an entity with a collection property passes itself as the collection's owner). But a more common scenario is with PropertyChanged events, since the entity is passed as the sender to the event handlers. I would assume a lot of people implement INotifyPropertyChanged and would therefore have this problem checking for reference equality.

We need to check for reference equality, because we do a lot of reattachment to new sessions and need to distinguish between truly different instances of the same type with the same ID to avoid NonUniqueObjectException. But we also don't want to consider an entity and a proxy to that same instance as different.

We're going to work around this by defining a MemoryInstanceId property in our entity base class which gets uniquely generated and assigned in the constructor, and compare that. Still, it would be nice if NHibernateUtil had something like an AreUnproxiedInstancesEqual() method, or if the Unproxy() method on SessionImpl (? I know I've seen it somewhere) was made part of the ISession interface.

Nels, check this link, this is actually working for me very well. It passed all of unit tests

http://groups.google.com/group/nhusers/ ... 2483a59c5e

From the link:



Hmmm... interesting. Unfortunately, this puts knowledge of NHibernate into my POCO, and also requires that my entity is already attached to the current session.