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crimsondr
 Post subject: how to generate a left join when using a criteria query?
PostPosted: Thu May 31, 2007 11:12 am 
Newbie

Joined: Wed May 30, 2007 2:18 pm
Posts: 14
How can I generate the following HQL using a criteria query?
Code:
select mother, mate.Name
from Eg.DomesticCat as mother
    left outer join mother.Mate as mate


When I try to use a criteria query it always uses an inner join. But I need it to use a left join because a cat may not always have a mate but I still want that cat returned.

Thanks!
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merge_s.rottem
 Post subject:
PostPosted: Thu May 31, 2007 12:22 pm 
Expert
Expert

Joined: Tue Aug 23, 2005 5:52 am
Posts: 335
The CreateCriteria method has an overload that supports setting the JoinType.

Cheers,

Syn
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crimsondr
 Post subject:
PostPosted: Thu May 31, 2007 12:28 pm 
Newbie

Joined: Wed May 30, 2007 2:18 pm
Posts: 14
I didn't find such an overload on CreateCritera. But I did find one on CreateAlias.

Problem solved.
Thanks.
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sergey
 Post subject:
PostPosted: Fri Jun 01, 2007 2:00 am 
Contributor
Contributor

Joined: Wed May 11, 2005 4:59 pm
Posts: 1766
Location: Prague, Czech Republic
It's there in NHibernate 1.2. If you are not using it yet, you should upgrade.
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crimsondr
 Post subject:
PostPosted: Fri Jun 01, 2007 8:34 am 
Newbie

Joined: Wed May 30, 2007 2:18 pm
Posts: 14
sergey wrote:
It's there in NHibernate 1.2. If you are not using it yet, you should upgrade.


Okay, I found it. I was only looking at session.CreateCriteria which doesn't have this overload.

Thanks.
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