Any one who can help me out of these Exceptions? It is tiring me. Thanks & Regards, Hari Kishan T _____ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of HariKishan Sent: Wednesday, September 21, 2011 3:48 PM To: 'Rules Users List' Subject: [rules-users] Getting Exception while running rules continuously onthe Event Streams. Please find attached the rule Code (.drl) below. Frequently getting this below Exception while running rules. Exception caught while executing action: org.drools.reteoo.PropagationQueuingNode$PropagateAction@41c317 java.lang.NullPointerException at org.drools.util.LeftTupleList.toArray(LeftTupleList.java:106) at org.drools.util.LeftTupleList.toArray(LeftTupleList.java:11) at org.drools.reteoo.CollectNode.assertObject(CollectNode.java:256) at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObject SinkAdapter.java:42) at org.drools.reteoo.RightInputAdapterNode.assertLeftTuple(RightInputAdapterNod e.java:135) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(Sing leLeftTupleSinkAdapter.java:117) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(Single LeftTupleSinkAdapter.java:28) at org.drools.reteoo.FromNode.evaluateAndPropagate(FromNode.java:156) at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:104) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(C ompositeLeftTupleSinkAdapter.java:145) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateAssertLeftTuple(Com positeLeftTupleSinkAdapter.java:39) at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:175) at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObject SinkAdapter.java:42) at org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQue uingNode.java:326) at org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuing Node.java:221) at org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(Propagation QueuingNode.java:394) at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorking Memory.java:1486) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:158) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:122) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28) at org.mule.module.drools.Drools.assertEvent(Drools.java:165) at org.mule.module.bpm.Rules.handleEvent(Rules.java:131) at org.mule.module.bpm.RulesComponent.doInvoke(RulesComponent.java:84) at org.mule.component.AbstractComponent.invokeInternal(AbstractComponent.java:1 20) at org.mule.component.AbstractComponent.access$000(AbstractComponent.java:56) at org.mule.component.AbstractComponent$1$1.process(AbstractComponent.java:234) at org.mule.processor.chain.DefaultMessageProcessorChain.doProcess(DefaultMessa geProcessorChain.java:88) at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessa geProcessorChain.java:89) at org.mule.processor.chain.InterceptingChainLifecycleWrapper.doProcess(Interce ptingChainLifecycleWrapper.java:63) at org.mule.processor.chain.AbstractMessageProcessorChain.process(AbstractMessa geProcessorChain.java:89) at org.mule.processor.chain.InterceptingChainLifecycleWrapper.process(Intercept ingChainLifecycleWrapper.java:94) at org.mule.component.AbstractComponent.process(AbstractComponent.java:154) at org.mule.processor.AbstractInterceptingMessageProcessor.processNext(Abstract InterceptingMessageProcessor.java:93) at org.mule.interceptor.AbstractEnvelopeInterceptor.process(AbstractEnvelopeInt erceptor.java:55) at org.mule.processor.AsyncInterceptingMessageProcessor.processNextTimed(AsyncI nterceptingMessageProcessor.java:118) at org.mule.processor.SedaStageInterceptingMessageProcessor$SedaStageWorker.doW ork(SedaStageInterceptingMessageProcessor.java:197) at org.mule.processor.SedaStageInterceptingMessageProcessor$SedaStageWorker.doR un(SedaStageInterceptingMessageProcessor.java:178) at org.mule.work.AbstractMuleEventWork.run(AbstractMuleEventWork.java:43) at org.mule.work.WorkerContext.run(WorkerContext.java:309) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.ja va:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:9 08) at java.lang.Thread.run(Thread.java:619) Thanks & Regards, Hari Kishan T