[jboss-jira] [JBoss JIRA] Closed: (JBRULES-784) NPE when left or right hand fact attribute is null

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-784?page=all ]

Edson Tirelli closed JBRULES-784.
---------------------------------

    Fix Version/s: 4.0.0.MR2
       Resolution: Done

Problem was fixed together with JBRULES-798. Added integration case anyway.

> NPE when left or right hand fact attribute is null
> --------------------------------------------------
>
>                 Key: JBRULES-784
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-784
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Conflict Resolution
>    Affects Versions: 3.1-m1, 3.0.6
>         Environment: Windows XP, JBoss 4.0.5, Java 1.5
>            Reporter: David Nelson
>         Assigned To: Edson Tirelli
>             Fix For: 4.0.0.MR2
>
>
> When a rule is evaluated, if the left or right side of a comparison is null, then the rule throws a NPE during execution which bubbles to the UI.
> Here's the simple scenario:
> Class A has a name attribute.
> Class B has a name attribute set to "Bob".
> when
>          b : B()
>          a: A( $name : name, ($name != b.getName()) )
> then
>          System.out.println("This is not an issue!");

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