[jbpm-users] [JBoss jBPM] - Action.java:122 NullPointerException

I am attempting to run this under Mule 2.1.1 Enterprise. We are running MySQL as the database. The source is a JMS Queue running on ActiveMQ. No matter what I place onto the queue, the error occurs and I have confirmed that data is being placed onto the queue. I am getting the following exception when trying to do a simple business process: ==============process.xml=============== <?xml version="1.0" encoding="UTF-8"?> <process-definition name="LoanBroker"> xmlns="http://jbpm.org/3/jpdl" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jbpm.org/3/jpdl http://jbpm.org/jpdl-3.1.xsd" <!-- Request received from customer --> <start-state name="searchRequest"> </start-state> SubscriptionRequest <!-- We could perform additional data validation here --> subscriptionRequest <end-state name="theFunIsDone" /> </process-definition> ===============snippent from mule.cfg================== <endpoint name="SubscriptionRequest" address="jms://Requests.Subscription" connector-ref="jmsConnector"/> <bpm:connector name="jBpmConnector" bpms-ref="jbpm"/> <jms:object-to-jmsmessage-transformer name="Object2JMS"/> <cxf:inbound-endpoint address="http://localhost:8888/services/Axiom"/> <inbound-endpoint ref="SubscriptionRequest"/> <pass-through-router> <stdio:outbound-endpoint system="OUT"/> </pass-through-router> <filtering-router> <outbound-endpoint ref="SubscriptionProcessEngine" /> </filtering-router> =============exception ================= ERROR 2009-01-08 15:01:15,795 [jBpmConnector.dispatcher.1] org.jbpm.instantiation.Delegation: couldn't load delegation class 'org.mule.providers.bpm.jbpm.actions.ValidateMessageSource' java.lang.ClassNotFoundException: class 'org.mule.providers.bpm.jbpm.actions.ValidateMessageSource' could not be found by the process classloader at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:118) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.jbpm.instantiation.Delegation.instantiate(Delegation.java:140) at org.jbpm.instantiation.Delegation.getInstance(Delegation.java:125) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.instantiation.Delegation$$EnhancerByCGLIB$$cb0d36ae.getInstance() at org.jbpm.graph.def.Action.execute(Action.java:121) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174) at org.jbpm.graph.def.Node.enter(Node.java:303) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.enter() at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:394) at org.jbpm.graph.node.StartState.leave(StartState.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.leave() at org.jbpm.graph.exe.Token.signal(Token.java:195) at org.jbpm.graph.exe.Token.signal(Token.java:140) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271) at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:150) at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:163) at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69) at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:273) at org.mule.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528) at java.lang.Thread.run(Unknown Source) ERROR 2009-01-08 15:01:15,795 [jBpmConnector.dispatcher.1] org.jbpm.instantiation.Delegation: couldn't instantiate delegation class 'org.mule.providers.bpm.jbpm.actions.ValidateMessageSource' java.lang.NullPointerException at org.jbpm.instantiation.FieldInstantiator.newInstance(FieldInstantiator.java:105) at org.jbpm.instantiation.FieldInstantiator.instantiate(FieldInstantiator.java:48) at org.jbpm.instantiation.Delegation.instantiate(Delegation.java:163) at org.jbpm.instantiation.Delegation.getInstance(Delegation.java:125) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.instantiation.Delegation$$EnhancerByCGLIB$$cb0d36ae.getInstance() at org.jbpm.graph.def.Action.execute(Action.java:121) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174) at org.jbpm.graph.def.Node.enter(Node.java:303) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.enter() at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:394) at org.jbpm.graph.node.StartState.leave(StartState.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.leave() at org.jbpm.graph.exe.Token.signal(Token.java:195) at org.jbpm.graph.exe.Token.signal(Token.java:140) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271) at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:150) at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:163) at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69) at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:273) at org.mule.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528) at java.lang.Thread.run(Unknown Source) ERROR 2009-01-08 15:01:15,920 [jBpmConnector.dispatcher.1] org.jbpm.graph.def.GraphElement: action threw exception: null java.lang.NullPointerException at org.jbpm.graph.def.Action.execute(Action.java:122) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174) at org.jbpm.graph.def.Node.enter(Node.java:303) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.enter() at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:394) at org.jbpm.graph.node.StartState.leave(StartState.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.leave() at org.jbpm.graph.exe.Token.signal(Token.java:195) at org.jbpm.graph.exe.Token.signal(Token.java:140) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271) at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:150) at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:163) at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69) at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:273) at org.mule.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528) at java.lang.Thread.run(Unknown Source) ERROR 2009-01-08 15:01:16,029 [jBpmConnector.dispatcher.1] org.mule.DefaultExceptionStrategy: Caught exception in Exception Strategy: null org.jbpm.graph.def.DelegationException at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:387) at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:378) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:281) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174) at org.jbpm.graph.def.Node.enter(Node.java:303) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.enter() at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:394) at org.jbpm.graph.node.StartState.leave(StartState.java:70) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:147) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$4d0a8154.leave() at org.jbpm.graph.exe.Token.signal(Token.java:195) at org.jbpm.graph.exe.Token.signal(Token.java:140) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271) at org.mule.transport.bpm.jbpm.Jbpm.startProcess(Jbpm.java:150) at org.mule.transport.bpm.ProcessMessageDispatcher.processAction(ProcessMessageDispatcher.java:163) at org.mule.transport.bpm.ProcessMessageDispatcher.doDispatch(ProcessMessageDispatcher.java:69) at org.mule.transport.AbstractMessageDispatcher$Worker.run(AbstractMessageDispatcher.java:273) at org.mule.work.WorkerContext.run(WorkerContext.java:310) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at org.jbpm.graph.def.Action.execute(Action.java:122) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264) ... 30 more View the original post : 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