[rules-users] Problem with rule: Unexpected exception executing action org.drools.reteoo.PropagationQueuingNode$PropagateAction at 631b86c7

[quivler]

Hey I'm getting the following Error "Unexpected exception executing action
org.drools.reteoo.PropagationQueuingNode$PropagateAction at 631b86c7" with one
off my rules in my project.
The problem is linked with the use of two after statements in one rule.
If I delete one of them everything works like a charm.
The rule looks like this:

// Regeln
rule "Vergessene Herdplatte"

    when
        // Platte wurde eingeschaltet und es steht kein Topf auf ihr
        $platte: HerdplatteEingeschaltet( plateOccupied == false ) from
entry-point events 
        // und in den nächsten 20 sek wird die gleiche Platte nicht
ausgeschaltet 
        not( HerdplatteAusgeschaltet( this.nummer == $platte.nummer, this
after[0s,20s] $platte ) from entry-point events ) 
        // oder es wird in den nächsten 20 sek kein Topf auf die Platte
gestellt
        not( TopfAufHerdplatte( this.nummer == $platte.nummer, this
after[0s,20s] $platte ) from entry-point events )
    then
        System.out.println("Vergessene Herdplatte erkannt!");
    
end

If I comment one of the not-clause out, it works.
I created an unit-test 
http://drools.46999.n3.nabble.com/file/n2821121/TestProject.zip
TestProject.zip  which reproduces the exception.
And here the Failure Trace:

org.drools.RuntimeDroolsException: Unexpected exception executing action
org.drools.reteoo.PropagationQueuingNode$PropagateAction at 631b86c7
	at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1473)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:182)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:145)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:96)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:44)
	at com.sample.FusionTest.testRule(FusionTest.java:79)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
	at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
	at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
	at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
	at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.NullPointerException
	at
org.drools.time.impl.CompositeMaxDurationTimer.createTrigger(CompositeMaxDurationTimer.java:58)
	at org.drools.common.Scheduler.scheduleAgendaItem(Scheduler.java:55)
	at org.drools.common.DefaultAgenda.scheduleItem(DefaultAgenda.java:314)
	at
org.drools.reteoo.RuleTerminalNode.assertLeftTuple(RuleTerminalNode.java:185)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)
	at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:78)
	at org.drools.reteoo.NotNode.assertLeftTuple(NotNode.java:101)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:64)
	at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:128)
	at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
	at
org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQueuingNode.java:347)
	at
org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:229)
	at
org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:443)
	at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1471)
	... 29 more


Can anybody please help me.

Thanks in advance.
Armin



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