Net4Collections throwing Error

[Action Jackson]

Hi all,

I'm using Jose's Net4Collections classes to get NHibernate to work
with the collections built into the .NET framework. I'm getting an
error that I can't decipher. It appears to be blowing up in the
'GetDeletes' method of the PersisentGenericSet class. I'm not sure
why GetDeletes is even called since I'm not trying to delete anything.

Unable to cast object of type
'SetSnapShot`1[Content.Base.Category,System.Object]' to type
'ISetSnapshot`1[Content.Base.Category,Content.Base.Category]'.

Here's the Category class:

public class Category:DomainObject
{
public virtual Category ParentCategory { get; set; }
public virtual ISet<Category> ChildCategories { get; protected
set; }

public virtual void AddChildCategory(Category category)
{
category.ParentCategory = this;
ChildCategories.Add(category);
}
}

The error occurs when I try to persist like so:

using (new UnitOfWorkScope())
{
Category parentCategory = _categoryRepository.Get(x => x.Name ==
"Mathematics");
parentCategory.AddChildCategory(new Category("child"));
_categoryRepository.Add(parentCategory);
}

Here's a portion of the stack trace:

at
Infrastructure.Implementations.Data.PersistentGenericSet`1.GetDeletes(ICollectionPersister
persister, Boolean indexIsFormula) in Net4Collections.cs: line 619
at
NHibernate.Persister.Collection.AbstractCollectionPersister.DeleteRows(IPersistentCollection
collection, Object id, ISessionImplementor session)
at NHibernate.Action.CollectionUpdateAction.Execute()
at NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
at NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
at NHibernate.Engine.ActionQueue.ExecuteActions()
at
NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource
session)
at
NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent
event)
at NHibernate.Impl.SessionImpl.Flush()

Any ideas?? Thanks!

[Action Jackson]

I should mention that _categoryRepository.Add() simply calls
Session.SaveOrUpdate(entity) and I'm using NHibernate 3.2.0.4000

[Action Jackson]

I found the solution. Turns out this bug was fixed a couple days
ago.

Post by Action Jackson
I should mention that _categoryRepository.Add() simply calls
Session.SaveOrUpdate(entity) and I'm using NHibernate 3.2.0.4000

[Luiz Zen]

Hi,
This is an old post, but I am having the same issue.
Was this a bug in NHibernate or in the Net4Collections class?
Which version fixes it?

Thanks

Post by Action Jackson
I found the solution. Turns out this bug was fixed a couple days
ago.

Post by Action Jackson
I should mention that _categoryRepository.Add() simply calls
Session.SaveOrUpdate(entity) and I'm using NHibernate 3.2.0.4000