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niklassaers
 Post subject: Help, Hibernate's returning the wrong object
PostPosted: Fri Sep 17, 2010 3:43 pm 
Newbie

Joined: Thu Nov 19, 2009 6:13 am
Posts: 3
Hi guys,

I have a query that looks like this

Code:
Document document = DocDAO.getSession().read(someId);
MyFile file = (MyFile) DAO.getSession()
.createQuery("SELECT file FROM MyFile file WHERE file.document = :document AND file.version = :version")
.setParameter("document", document)
.setParameter("version", version)
.uniqueResult();

Now, I should get a file where file.getDocument().getId() == someId, and someId is a BigInteger (in MySQL, a bigint(20). But unfortunately, they are not equal. What kind of errors can lead to the queried entity not being the entity I was looking for?

Cheers

Nik
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nordborg
 Post subject: Re: Help, Hibernate's returning the wrong object
PostPosted: Fri Sep 17, 2010 5:10 pm 
Expert
Expert

Joined: Wed Mar 03, 2004 6:35 am
Posts: 1240
Location: Lund, Sweden
Quote:
file.getDocument().getId() == someId, and someId is a BigInteger


Don't compare objects using ==. Use equals() instead.
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niklassaers
 Post subject: Re: Help, Hibernate's returning the wrong object
PostPosted: Fri Sep 17, 2010 7:13 pm 
Newbie

Joined: Thu Nov 19, 2009 6:13 am
Posts: 3
nordborg wrote:
Don't compare objects using ==. Use equals() instead.


My bad, what I meant to say is that both Ids should have the same values, but they don't. Instead I get another instance of the same class
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