Nhibernate: Uninitialized proxy passed to save

Question

Hi all,

I've got a problem with NHibernate. The error message is:

Uninitialized proxy passed to save

[PersistentObjectException: Uninitialized proxy passed to save(). Object: ......Domain.Model......] NHibernate.Event.Default.DefaultSaveEventListener.ReassociateIfUninitializedProxy(Object obj, ISessionImplementor source) +104 NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent event) +90
NHibernate.Impl.SessionImpl.FireSaveOrUpdate(SaveOrUpdateEvent event) +156
NHibernate.Impl.SessionImpl.SaveOrUpdate(Object obj) +152

So what I do is, I have an aggregate root and within that a collection of objects. When saving changes, I call save on the aggregate root only. The child class doesn't have a reference to the aggreate root.

  <bag name="Children" cascade="all-delete-orphan" where="IsDeleted = 0" lazy="true">
    <key column="abcId"/>
    <one-to-many class="abc"/>
  </bag>

Now the error appears when I collect some children to be saved from the UI like:

root = repository.GetRootById(id)

    // collect children from data list 
    abc = repository.GetAbcById(abcId) 
    abc.Name = textName.Text; 
    ...

    // no root.Children.Add(abc) is performed here, since abc already is a child of root    

    repository.Save(root); 
    ... 
    Exception occurs

Now if I access root.Children before save, it works.

Anyone?

Answer 1

Fixed it.. the root was uninitialized because within the repository .GetRootById(..) I used session.Load instead of session.Get. So the root was never loaded...