I am attempt to use a custom collection type and I am running into a problem with calling methods on the actual implementation of the Collection that lives in my domain model.

Here are the classes:



It works fine for persistence to the database, but IPhotoCollection has the Finalize() method on it that are implemented in PhotoCollection.

I can't figure out how to call these implementations from PersistentPhotoCollection. How do I obtain a reference to PhotoCollection? Is it the Owner property on PersistentBag? I don't seem to "get it"

any help would be appreciated. Thank you!

PersistentPhotoCollection should implement IPhotoCollection, and will probably be a wrapper around a PhotoCollection instance. So when somebody calls PersistentPhotoCollection.Finalize, it would pass the call to the collection it's wrapping.

sergey,

I realize that this is what is occuring, I just don't know how to access the underlying collection.

How do I access the PhotoCollection instance from within PersistentPhotoCollection?

Ahh, you want to have access to the bag the PersistentBag is wrapping - I don't think it's possible to access it - you can either recompile NHibernate changing the field to protected, or duplicate the PersistentBag code in your class, then you wouldn't inherit from PersistentBag.

And submit a JIRA issue to make the field protected, please.

I don't think we're on the same page. I just need to call Finalize on the PhotoCollection instance. Is there an instance of this class provided to PersistentPhotoCollection?

I don't know how to get an instance reference to PhotoCollection from within the Finalize method so that I can call PhotoCollection.Finalize from PersistentPhotoCollection.Finalize

Are we talking about the same thing?

It's up to you to provide that reference. IUserCollectionType.Instantiate is called for new collections and IUserCollectionType.Wrap is called to create a wrapper around an existing collection. The wrapper should then store that collection reference somewhere.

There is an example of IUserCollectionType implementation in the NHibernate test suite.