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a_gura
 Post subject: Missing expression error when collection is empty
PostPosted: Tue Apr 20, 2004 11:57 am 
Newbie

Joined: Fri Apr 16, 2004 9:27 am
Posts: 18
Location: Russia, Spb
I trying execute HQL expresion by Query using. Collection using as parameter. If collection is empty then Hibernate generate wrong SQL query.
Code:

String select = "select agent from Agent agent where agent.id in :agentIds";

//ids - initialized empty collection of java.lang.Long type

Query query = session.createQuery(select)
    .setParameterList("agentIds", ids, Hibernate.LONG);

return query.list();


In result SQL: SELECT .... WHERE AGENT1_.ID IN

I hoped to see: SELECT .... WHERE AGENT1_.ID IN (NULL)
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anthony
 Post subject:
PostPosted: Tue Apr 20, 2004 2:20 pm 
Hibernate Team
Hibernate Team

Joined: Thu Dec 18, 2003 9:55 am
Posts: 1977
Location: France
do it your self with a test on Collection size... hibernate can do a lot of things but not all...
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michael
 Post subject:
PostPosted: Tue Apr 20, 2004 7:25 pm 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
You have to put brackets around your named parameter placeholder.
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a_gura
 Post subject:
PostPosted: Wed Apr 21, 2004 5:02 am 
Newbie

Joined: Fri Apr 16, 2004 9:27 am
Posts: 18
Location: Russia, Spb
delpouve wrote:
do it your self with a test on Collection size... hibernate can do a lot of things but not all...


:) Yes, but my code have to be easy for understanding.
I think that Hibernate must generate valid SQL for any parameter value (null or empty collection)...
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a_gura
 Post subject:
PostPosted: Wed Apr 21, 2004 5:05 am 
Newbie

Joined: Fri Apr 16, 2004 9:27 am
Posts: 18
Location: Russia, Spb
michael wrote:
You have to put brackets around your named parameter placeholder.


I get same SQL code.
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