nHibernate - IStatelessSession and FetchMany returning multiple parent records

问题

I have the following linq statement:

var query = from p in session.Query<Parent>().FetchMany(x => x.Children)
            select p;

I end up with a new Parent object for each Child in Children. So if i had 5 Children, I would get 5 separate, but identical, Parent objects back. Is this the intended behavior? If i use ISession, I get 1 Parent as expected.

回答1:

This is expected, because Stateless Sessions do not track objects; therefore each row results in a new instance.

回答2:

Have you tried to do a Distinct call on the query?

var results = query.Distinct();

来源：https://stackoverflow.com/questions/10921959/nhibernate-istatelesssession-and-fetchmany-returning-multiple-parent-records