The stack trace shows the problem is happening in a use of the "after" evaluator:

2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.base.evaluators.AfterEvaluatorDefinition$AfterEvaluator.evaluateCachedRight(AfterEvaluatorDefinition.java:321)

    So, the attached rule is not the source of the problem, although it might be the rule "triggering" the problem because of the event forwarding in the consequence. Remember that the After operator is supposed to work on events, java.util.Date, and long (for timestamps). Anything else will raise errors.

    Finally, on a different subject, you can simplify your consequence, as this:

WorkingMemoryEntryPoint eventsignaturestream = drools.getEntryPoint("EVENT SIGNATURE STREAM") ;
eventsignaturestream.insert($p);

   Is the same as:

entryPoints["EVENT SIGNATURE STREAM"].insert( $p );

   []s
   Edson

2009/11/9 Chetan Mahadev <mahadev.chetan@gmail.com>

Hi I am getting the following error while inserting into the entrypoint.

rule "Check if EligibleAlert is an Signature Event"
agenda-group "enrichment"
auto-focus true

no-loop true
when
    $list : EventSignatureList();
    $p : EligibleAlert($a : alert, $a.eventSignatureProcessingStatus!="TRUE" );
    eval((ifMatchesSyslog($list.getAllSyslogMnemonics(), $a)!=null)  )

then
        try{
                WorkingMemoryEntryPoint eventsignaturestream = drools.getEntryPoint("EVENT SIGNATURE STREAM") ;
                eventsignaturestream.insert($p);
                } catch(Exception e)
        {
            log.error("[EventSignatureRules] - exception in Check if EligibleAlert is an Signature Event alert[ids=" + $p.getAlert().getId() + "][error:" + e.toString() + "]");
        }
end

And I am creating the session this way:

        knowledgeBaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        knowledgeBaseConfig.setOption( EventProcessingOption.STREAM );
        kBase = KnowledgeBaseFactory.newKnowledgeBase( knowledgeBaseConfig );
       

        kBase.addKnowledgePackages(knowledgeBuilder.getKnowledgePackages());
       
       
        KnowledgeSessionConfiguration knowledgeSessionConfig =  KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        ((SessionConfiguration) knowledgeSessionConfig).setClockType( ClockType.REALTIME_CLOCK );
          kBase.newStatefulKnowledgeSession(knowledgeSessionConfig,null);


I get the Following error when my rule fires:

2009-11-09 15:02:00,675 FATAL pool-2-thread-1 LogStream - java.lang.ClassCastException: org.drools.common.DefaultFactHandle cannot be cast to org.drools.common.EventFactHandle
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.base.evaluators.AfterEvaluatorDefinition$AfterEvaluator.evaluateCachedRight(AfterEvaluatorDefinition.java:321)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.rule.VariableRestriction.isAllowedCachedRight(VariableRestriction.java:116)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.rule.VariableConstraint.isAllowedCachedRight(VariableConstraint.java:112)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.DefaultBetaConstraints.isAllowedCachedRight(DefaultBetaConstraints.java:200)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:172)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQueuingNode.java:326)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:221)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:394)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1486)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:158)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:122)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at pnoc.alertProcessor.Rule_Check_if_EligibleAlert_is_an_Signature_Event_0.consequence(Rule_Check_if_EligibleAlert_is_an_Signature_Event_0.java:16)
2009-11-09 15:02:00,676 FATAL pool-2-thread-1 LogStream -       at pnoc.alertProcessor.Rule_Check_if_EligibleAlert_is_an_Signature_Event_0ConsequenceInvoker.evaluate(Rule_Check_if_EligibleAlert_is_an_Signature_Event_0ConsequenceInvoker.java:24)

Pls help!


Regds
Chetan

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--
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com