[Hibernate-issues] [Hibernate-JIRA] Created: (HHH-1780) negation of EXISTS in hql query does not work

[Marton P. (JIRA) <no...@at...>]

negation of EXISTS in hql query does not work
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         Key: HHH-1780
         URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1780
     Project: Hibernate3
        Type: Bug

    Versions: 3.1.3, 3.2.0 cr1, 3.2.0.cr2    
    Reporter: Marton Papp


Hello!

I think I found a bug in Hibernate, in class org.hibernate.hql.ast.HqlParser.

It is in the methtod:

public AST negateNode(AST x)


The switch lacks the node type: EXISTS.

The default negateNode() implementation in org.hibernate.hql.antlr.HqlBaseParser seems to be broken by me, since it  does not actually inverts the node but returns a node that is inverted. Or, to be more exact, the negation of OR and AND types are buggy, since they seem to assume that negateNode() will change the node itself, and so they simply discard its return value.

I wish the branch for NOT was not commented out, since it would provide a workaround, but now i'm stuck.

Regards,
Marton 

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