[jboss-jira] [JBoss JIRA] (JBRULES-3390) Drools java.lang.NullPointerException at org.drools.reteoo.RuleTerminalNode

[Alberto Rugnone (JIRA)]

Alberto Rugnone created JBRULES-3390:
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             Summary: Drools java.lang.NullPointerException at org.drools.reteoo.RuleTerminalNode
                 Key: JBRULES-3390
                 URL: https://issues.jboss.org/browse/JBRULES-3390
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.3.0.Final
         Environment: eclipse 3.6, Drools 5.3, jdk1.6.0_25_x64
            Reporter: Alberto Rugnone
            Assignee: Mark Proctor


My application has to monitor when a magnetic contact is activated and when it is contact released event has to be retracted. And viceversa. Here is my rule and the big null pointer I have. Any helps will be very appreciated! Thank you a lot!!

     rule "contact activated vs contact released"	salience 0 no-loop true
    	when
    		$contact_activated : Event(type == EventType.CONTACT_ACTIVATED) ||	
    
        $contact_released : Event(type == EventType.CONTACT_RELEASED)
            then
               
        	     if($contact_activated!= null) {
        	     	retract($contact_activated);
        	     } else {
        	     	retract($contact_released);
        	     }
    end	

and 
 I have


    java.lang.NullPointerException
    	at org.drools.reteoo.RuleTerminalNode$SortDeclarations.compare(RuleTerminalNode.java:477)
    	at org.drools.reteoo.RuleTerminalNode$SortDeclarations.compare(RuleTerminalNode.java:473)
    	at java.util.Arrays.mergeSort(Arrays.java:1270)
    	at java.util.Arrays.sort(Arrays.java:1210)
    	at org.drools.reteoo.RuleTerminalNode.<init>(RuleTerminalNode.java:119)
    	at org.drools.RuleActivationListenerFactory.createActivationListener(RuleActivationListenerFactory.java:21)
    	at org.drools.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:157)
    	at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:123)
    	at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:110)
    	at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:441)
    	at org.drools.common.AbstractRuleBase.addRule(AbstractRuleBase.java:821)
    	at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:555)
    	at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:458)
    	at org.drools.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:150)
    	at it.ipiu.pch.sel.RuleTest.before(RuleTest.java:1272)
    	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.RunBefores.evaluate(RunBefores.java:27)
    	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
    	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    	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.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)


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