[rules-users] NPE in RightTuple

[Edson Tirelli]

   Looks like a bug. Can you please open a JIRA with a test case? My guess
is that your rules are changing a fact attribute that is causing the
equals()/hashcode() methods of the object to return a different result?

    []s
    Edson

2009/1/14 Evans, Jess <JEvans at collegeboard.org>

>  Does anyone know what this would be indicative of?  I've seen it occur
> periodically at which point I have to discard the session.  I flatten and
> assert my data, run the rules, and then retract the handles collected on
> assertion.  I've ensured the fact handle parameter is never null.  I have
> the stateful session wrapped in a synchronized business façade, so I don't
> think it should be a concurrency issue (unless I have a bug of course).  I'm
> running Drools 5 M4.
>
>
>
> java.lang.NullPointerException
>
>         at
> org.drools.util.RightTupleIndexHashTable.remove(RightTupleIndexHashTable.java:224)
>
>         at org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:204)
>
>         at
> org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:210)
>
>         at
> org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:190)
>
>         at
> org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1078)
>
>         at
> org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1045)
>
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>
>


-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss, a division of Red Hat @ www.jboss.com
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