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  1. jBPM
  2. JBPM-4261

Work Item handler that extends AbstractWorkItemHandler throws NPE when activated

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      Stack trace included, AWIH throws NPE when more than one work item is included in the BPMN diagram. It appears that not all WorkItems are connected to their respective WI Nodes (lazy loaded), need to include a null check.

      I will add a pull request for the patch, which I have tested locally.

      Caused by: org.jbpm.workflow.instance.WorkflowRuntimeException: [BidsDay.ReviewReports:2 - LULD Review:5] -- null
	at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:135) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:155) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:337) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:296) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.node.SplitInstance.executeStrategy(SplitInstance.java:75) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:63) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:155) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:337) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:296) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.node.StartNodeInstance.triggerCompleted(StartNodeInstance.java:66) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.node.StartNodeInstance.internalTrigger(StartNodeInstance.java:43) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:155) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.ruleflow.instance.RuleFlowProcessInstance.internalStart(RuleFlowProcessInstance.java:35) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.process.instance.impl.ProcessInstanceImpl.start(ProcessInstanceImpl.java:222) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.start(WorkflowProcessInstanceImpl.java:358) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:189) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.common.AbstractWorkingMemory.startProcessInstance(AbstractWorkingMemory.java:1590) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.startProcessInstance(StatefulKnowledgeSessionImpl.java:376) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.runtime.process.StartProcessInstanceCommand.execute(StartProcessInstanceCommand.java:52) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.runtime.process.StartProcessInstanceCommand.execute(StartProcessInstanceCommand.java:29) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:527) [drools-persistence-jpa-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:73) [drools-persistence-jpa-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at com.bids.bpm.jee.util.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:41) [bids-jee-app-ejb-1.0-SNAPSHOT.jar:]
	at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:375) [drools-persistence-jpa-6.0.1.Final.jar:6.0.1.Final]
	at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcessInstance(CommandBasedStatefulKnowledgeSession.java:246) [drools-core-6.0.1.Final.jar:6.0.1.Final]
	at com.bids.bpm.jee.controller.BidsProcessController.startProcess(BidsProcessController.java:106) [bids-jee-app-ejb-1.0-SNAPSHOT.jar:]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_17]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_17]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_17]
	at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_17]
	at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:374) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:127) [jboss-as-weld-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:135) [jboss-as-weld-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:82) [jboss-as-weld-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:228) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final]
	... 68 more
Caused by: java.lang.NullPointerException
	at org.jbpm.process.workitem.AbstractWorkItemHandler.findWorkItemNodeInstance(AbstractWorkItemHandler.java:46) [jbpm-workitems-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.process.workitem.AbstractWorkItemHandler.getNodeInstance(AbstractWorkItemHandler.java:39) [jbpm-workitems-6.0.1.Final.jar:6.0.1.Final]
	at com.bids.bpm.work.handlers.support.worker.BpmnSignalThrower.<init>(BpmnSignalThrower.java:33) [bids-work-handlers-1.0.0-SNAPSHOT.jar:]
	at com.bids.bpm.work.handlers.support.AbstractBidsWorkItemHandler.executeWorkItem(AbstractBidsWorkItemHandler.java:81) [bids-work-handlers-1.0.0-SNAPSHOT.jar:]
	at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:56) [drools-persistence-jpa-6.0.1.Final.jar:6.0.1.Final]
	at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:124) [jbpm-flow-6.0.1.Final.jar:6.0.1.Final]
	... 123 more

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            swiderski.maciej Maciej Swiderski (Inactive)
            jay.guidos-bidstrading.com Jay Guidos (Inactive)
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              Updated:
              Resolved: