Comments on: Querying many-to-many relations in NHibernate

By: Yaya Rabiu David

Yaya Rabiu David — Wed, 15 Jul 2009 17:19:38 +0000

have u considered drilling down straight using Expression Class? see the code below. I think it is more straight forward.

Category category; // The category of which its entities wanted to be retreived
IList nodes = NHHttpModule.CurrentSession.CreateCriteria(typeof(Entity))
.CreateCriteria(“categories”)
.Add(Expression.Eq(“ID”,category.ID))
.List();

By: thommie

thommie — Thu, 09 Apr 2009 15:13:51 +0000

thank you, will check this in next week, left the comp at home..

By: Gergely Orosz

Gergely Orosz — Thu, 09 Apr 2009 13:10:09 +0000

You have to create an ISession session which you can query. In my example (even though I did not note this) the NHttpModule is a class I developed and the CurrentSession static variable is a singleton that instances an ISession. I have updated the sample with this code as well.

However if you are new to NHibernate I would suggest to go through this tutorial: http://www.hibernate.org/362.html

By: Thommie

Thommie — Thu, 09 Apr 2009 12:19:50 +0000

i have the same problem i want to display products that belongs to a user, where i have a user table and a product table and there between user_products table that hols the id of the user and the products. But i cant figure out how to display the products that belongs to the current logged in user, i have mappings and everything similar to yours, but how do i write the code to bind this?