[rules-dev] ClassCastException: org.drools.reteoo.AlphaNode$AlphaMemory cannot be cast to org.drools.reteoo.BetaMemory

[Mark Proctor]

Can you first do this in DRL and make sure that works, if it doesn't 
then let us know. If it does work, then you can hopefully figure out 
what went wrong in your code from how we construct things.

Mark

Andreas Kohn wrote:
> Hi,
>
> I'm currently integrating drools (via the .spi.* classes, not via .drl
> files etc) into our product, and found a very odd class cast exception
> when producing different rules.
>
>
> java.lang.ClassCastException: org.drools.reteoo.AlphaNode$AlphaMemory cannot be cast to org.drools.reteoo.BetaMemory
> 	at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:96)
> 	at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:145)
> 	at org.drools.reteoo.CompositeLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:57)
> 	at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:142)
> 	at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
> 	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:184)
> 	at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:146)
> 	at org.drools.reteoo.Rete.assertObject(Rete.java:113)
> 	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:218)
> 	at org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute(ReteooWorkingMemory.java:291)
> 	at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1475)
> 	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:676)
> 	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:649)
> 	at drools.scratch.RecyclingTest.assertSession(RecyclingTest.java:88)
>
>
> Attached you'll find a maven project exhibiting the error, and from
> stepping through the code pieces it looks like two nodes in the network
> have the same id. The id was marked as released in the removeRule()
> process.
>
> This is against the 5.0.0.SNAPSHOT.
>
> Am I doing something wrong? Missing anything? Or is this a real
> "blocker" bug? Should I open a JIRA issue for that?
>
> Regards,
> --
> Andreas
>
>
>   
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