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taa_sarge
 Post subject: use of setInteger with createQuery
PostPosted: Mon Jun 27, 2005 4:09 pm 
Newbie

Joined: Mon Feb 09, 2004 11:14 am
Posts: 16
I have an attribute that is defined as Integer (we did this because the value could be null).

However, how can I get around the null pointer problem with the following:

Code:
Query query = session.createQuery(hql);         
query.setInteger("glUnit",glParameters.getGlUnit().intValue());


Any ideas...
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pksiv
 Post subject: Re: use of setInteger with createQuery
PostPosted: Mon Jun 27, 2005 4:15 pm 
Expert
Expert

Joined: Mon Feb 14, 2005 12:32 pm
Posts: 609
Location: Atlanta, GA - USA
taa_sarge wrote:
I have an attribute that is defined as Integer (we did this because the value could be null).

However, how can I get around the null pointer problem with the following:

Code:
Query query = session.createQuery(hql);         
query.setInteger("glUnit",glParameters.getGlUnit().intValue());


Any ideas...


That's more of a standard Java question than a Hibernate question isn't it ?

Just check if the value is null before doing the setInteger(). If you need to be able to find objects where the GlUnit is null, you'd have to write a slightly different query anyway.
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taa_sarge
 Post subject:
PostPosted: Mon Jun 27, 2005 4:39 pm 
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Joined: Mon Feb 09, 2004 11:14 am
Posts: 16
Well yes... I simply wanted to use the same query (with or without a null value).

Was just hoping that there was a more elegant solution.
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ExpeditorsSusanA
 Post subject:
PostPosted: Mon Jun 27, 2005 4:58 pm 
Beginner
Beginner

Joined: Thu Mar 31, 2005 5:59 pm
Posts: 34
Here's a somewhat pretty option:

Code:
Query query = session.createQuery(hql);

query.setInteger("glUnit", wrap(glParameters.getGlUnit()));
...
}

private int wrap(Integer value) {

  return value == null ? -1 : value.intValue();
}


Susan
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pksiv
 Post subject:
PostPosted: Mon Jun 27, 2005 4:59 pm 
Expert
Expert

Joined: Mon Feb 14, 2005 12:32 pm
Posts: 609
Location: Atlanta, GA - USA
ExpeditorsSusanA wrote:
Here's a somewhat pretty option:

Code:
Query query = session.createQuery(hql);

query.setInteger("glUnit", wrap(glParameters.getGlUnit()));
...
}

private int wrap(Integer value) {

  return value == null ? -1 : value.intValue();
}


Susan



How does that work if you actually want to retrieve those that have a null value ?
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ExpeditorsSusanA
 Post subject:
PostPosted: Mon Jun 27, 2005 5:45 pm 
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Beginner

Joined: Thu Mar 31, 2005 5:59 pm
Posts: 34
Hmm, yeah, you're right... my bad. I wasn't really thinking... Just trying to make it prettier. I would probly make a method to do the addQuery part tho. But it is definitely a Java issue.
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