1 to 1 != 1 to 0 one-to-one = 1 to 1 one-to-many allow from 0 to n
2008/9/23 Thomas Koch <[EMAIL PROTECTED]> > > Hi there - I am using NH 2.0. > > I am used to using the Criteria API for retrieving objects, but > yesterday I ran into problems. I want to find a sub-set of objects of > class A whoose one-to-one relation to another class B is null. > > If I use the Restrictions.IsNull of the Criteria API it does not work. > I will ask for entities of type B where B.Id IS NULL, which will never > happen. > > My setup: > > Class A > ID : int > Name : string > B : B > > Class B > ID : int > Name: string > > The classes A and B share the same primary key hence I thought it best > to use a one-to-one relation for the A.B property. > > I have solved this using HQL using a sub-query but I would still like > to know if its possible to do this using the Criteria API. > > Cheers, > Thomas > > > -- Fabio Maulo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
