This does not explain the exception, but the logic expressed in the comment is:<br>  // und in den nächsten 20 sek wird die gleiche Platte nicht ausgeschaltet<br>
   // <b>oder </b>es wird in den nächsten 20 sek kein Topf auf die Platte gestellt<br>but the &quot;not&quot; CEs are implicitly connected by <b>and</b>.<br><br>Nevertheless, please file a JIRA, with code to reproduce the exception.<br>
<br>-W<br><br><div class="gmail_quote">On 14 April 2011 18:37, quivler <span dir="ltr">&lt;<a href="mailto:asteudte@gmx.de">asteudte@gmx.de</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hey I&#39;m getting the following Error &quot;Unexpected exception executing action<br>
org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7&quot; with one<br>
off my rules in my project.<br>
The problem is linked with the use of two after statements in one rule.<br>
If I delete one of them everything works like a charm.<br>
The rule looks like this:<br>
<br>
// Regeln<br>
rule &quot;Vergessene Herdplatte&quot;<br>
<br>
    when<br>
        // Platte wurde eingeschaltet und es steht kein Topf auf ihr<br>
        $platte: HerdplatteEingeschaltet( plateOccupied == false ) from<br>
entry-point events<br>
        // und in den nächsten 20 sek wird die gleiche Platte nicht<br>
ausgeschaltet<br>
        not( HerdplatteAusgeschaltet( this.nummer == $platte.nummer, this<br>
after[0s,20s] $platte ) from entry-point events )<br>
        // oder es wird in den nächsten 20 sek kein Topf auf die Platte<br>
gestellt<br>
        not( TopfAufHerdplatte( this.nummer == $platte.nummer, this<br>
after[0s,20s] $platte ) from entry-point events )<br>
    then<br>
        System.out.println(&quot;Vergessene Herdplatte erkannt!&quot;);<br>
<br>
end<br>
<br>
If I comment one of the not-clause out, it works.<br>
I created an unit-test<br>
<a href="http://drools.46999.n3.nabble.com/file/n2821121/TestProject.zip" target="_blank">http://drools.46999.n3.nabble.com/file/n2821121/TestProject.zip</a><br>
TestProject.zip  which reproduces the exception.<br>
And here the Failure Trace:<br>
<br>
org.drools.RuntimeDroolsException: Unexpected exception executing action<br>
org.drools.reteoo.PropagationQueuingNode$PropagateAction@631b86c7<br>
        at<br>
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1473)<br>
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:182)<br>
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:145)<br>
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:96)<br>
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:44)<br>
        at com.sample.FusionTest.testRule(FusionTest.java:79)<br>
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br>
        at<br>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br>
        at<br>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br>
        at java.lang.reflect.Method.invoke(Method.java:597)<br>
        at<br>
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)<br>
        at<br>
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)<br>
        at<br>
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)<br>
        at<br>
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)<br>
        at<br>
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)<br>
        at<br>
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)<br>
        at<br>
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)<br>
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)<br>
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)<br>
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)<br>
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)<br>
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)<br>
        at<br>
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)<br>
        at org.junit.runners.ParentRunner.run(ParentRunner.java:236)<br>
        at<br>
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)<br>
        at<br>
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)<br>
        at<br>
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)<br>
        at<br>
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)<br>
        at<br>
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)<br>
        at<br>
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)<br>
Caused by: java.lang.NullPointerException<br>
        at<br>
org.drools.time.impl.CompositeMaxDurationTimer.createTrigger(CompositeMaxDurationTimer.java:58)<br>
        at org.drools.common.Scheduler.scheduleAgendaItem(Scheduler.java:55)<br>
        at org.drools.common.DefaultAgenda.scheduleItem(DefaultAgenda.java:314)<br>
        at<br>
org.drools.reteoo.RuleTerminalNode.assertLeftTuple(RuleTerminalNode.java:185)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)<br>
        at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)<br>
        at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)<br>
        at<br>
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:64)<br>
        at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:128)<br>
        at<br>
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)<br>
        at<br>
org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQueuingNode.java:347)<br>
        at<br>
org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:229)<br>
        at<br>
org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:443)<br>
        at<br>
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1471)<br>
        ... 29 more<br>
<br>
<br>
Can anybody please help me.<br>
<br>
Thanks in advance.<br>
Armin<br>
<font color="#888888"><br>
<br>
<br>
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