public virtual IEnumerator ReferencesFrom(int id)
{
CollectIdContext context = CollectIdContext.ForID(_transaction, id);
ClassMetadata classMetadata = context.ClassMetadata();
if (null == classMetadata)
{
// most probably ClassMetadata reading
return(Iterators.EmptyIterator);
}
if (!classMetadata.HasIdentity())
{
throw new InvalidOperationException(classMetadata.ToString());
}
if (!Handlers4.IsCascading(classMetadata.TypeHandler()))
{
return(Iterators.EmptyIterator);
}
classMetadata.CollectIDs(context);
return(new TreeKeyIterator(context.Ids()));
}
