Question

I have a session criteria statement (Fluent NHibernate) that does not seem to filter the child collection even though I have Expressions/Restrictions defined.

ICriteria criteria = session.CreateCriteria(typeof(MyClass));
criteria.CreateAlias("MyCollection", "MC");
criteria.Add(Restriction.Eq("MC.Property", value));
IList<MyClass> list = criteria.List<MyClass>();

This returns all the objects of type MyClass that have MyCollection.Property = value, however MyCollection is not filtered to MyCollection.Property = value

It seems like only the Root objects get filtered.

Thanks.

Answer 1

I’ve only found a few dodgy links about doing that – so this is at your own risks :).

It seems it should work if you add the following:

criteria.CreateCriteria("MC", JoinType.LeftOuterJoin);

I wouldn’t recommend it though as per Pedro’s answer.