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

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-3390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680134#comment-12680134 ] 

RH Bugzilla Integration commented on JBRULES-3390:
--------------------------------------------------

JBoss JIRA Server <jira-update at redhat.com> made a comment on [bug 803460|https://bugzilla.redhat.com/show_bug.cgi?id=803460]

Mario Fusco <mario.fusco at gmail.com> made a comment on jira JBRULES-3390

Allows to use a variable declared in an OR condition only if it is present in all its branches.
                
> 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: Mario Fusco
>             Fix For: 5.3.2.Final, 5.4.0.CR1
>
>
> 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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