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

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)