NHibernate pulling a branch of the Inheritance hierarchy.

pjgratz · **Joined:** Thu Sep 18, 2008 9:38 am **Posts:** 1

I have successfully setup my mapping files to support a table per hierarchy model. It works great when persisting. When I pull things back it will properly map to the concrete class, which is also perfect.

My question is can I query for just a particular concrete class rather than pulling everything and then performing casts to determine if it is one class or another. Anything with Examples/Criteria?

Thanks,

Pete Grazaitis

exp2000 · **Joined:** Tue Oct 16, 2007 9:45 am **Posts:** 93

you have discriminator column that you could filter by I guess?

wolli · **Posted:** Fri Sep 19, 2008 1:36 am

There is a special property "class" which can be used for that. There are two thread about it at the nhuser group at google:

http://groups.google.com/group/nhusers/browse_thread/thread/c68c903c686e4737

http://groups.google.com/group/nhusers/browse_thread/thread/bab5b00039138a69