Jing Zhang [http://community.jboss.org/people/zhangjing2000] created the discussion
"Re: A question about rule task in jBPM5" To view the discussion, visit: http://community.jboss.org/message/592273#592273 -------------------------------------------------------------- Thanks Mauricio, I found in your example, you used a new thread to call fireUntilHalt, but it caused a NPE in my code during call to internalExecuteWorkItem method in JPAWorkItemManager. I wonder if the new thread won't able to leverage the JPA context from main thread. Exception in thread "Thread-12" org.drools.RuntimeDroolsException: Unexpected exception executing action org.jbpm.process.instance.event.DefaultSignalManager$SignalAction@1b9da92 at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1000) at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1044) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:780) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:756) at org.drools.command.runtime.rule.FireUntilHaltCommand$1.run(FireUntilHaltCommand.java:50) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:43) at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:101) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:185) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:150) at org.jbpm.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:47) at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:162) at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:143) at org.jbpm.workflow.instance.node.RuleSetNodeInstance.signalEvent(RuleSetNodeInstance.java:73) at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:339) at org.jbpm.process.instance.event.DefaultSignalManager.internalSignalEvent(DefaultSignalManager.java:80) at org.jbpm.process.instance.event.DefaultSignalManager$SignalAction.execute(DefaultSignalManager.java:175) at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:998) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/592273#592273] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]
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