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04. Aug 2008, 11:09 CET | Link |
Hi everybody,
I have a problem concerning the jbpm-integration into seam - especially deployment. I guess my understanding of this integration is not quite right and I hope that someone can help me with it.
I have a small web-application running on my JBoss 4.2.2. It was build with JBoss-Tools out of Eclipse. After reading that jbpm-processdefinitons shouldn't be deployed via components.xml (multiple deployments of the same process..) I decided to use the jbpm-web-console which is also quite handy during development. Long Story short - my app is running - jbpm-processes are deployed (via web-console) and running nicely, too.
For testing purposes i temporarily switch back to businessprocess-deployment via components.xml. Somehow this kind of deployment differs from the other, because after that, i get a NPE because the process-classloader is not able to find my Action-Handler (it's called at the timer-event).
I am a bit confused about this error - because all I did was adding the process-def to components.xml and restart my app.
Does anybody know what my problem could be? - Is something wrong with my jBPM-Integration? (I am using Seam 2.0.2SP1 and jBpm 3.2.3)
11:01:57,859 ERROR [Delegation] couldn't instantiate delegation class 'org.domain.SeamProcessTest.action.TimerActionHandler' 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(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.instantiation.Delegation_$$_javassist_4.getInstance(Delegation_$$_javassist_4.java) at org.jbpm.graph.def.Action.execute(Action.java:121) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Action_$$_javassist_63.execute(Action_$$_javassist_63.java) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:259) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.node.State_$$_javassist_8.executeAction(State_$$_javassist_8.java) at org.jbpm.job.Timer.execute(Timer.java:56) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.job.Job_$$_javassist_54.execute(Job_$$_javassist_54.java) at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:173) at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64) 11:01:57,890 ERROR [GraphElement] action threw exception: null java.lang.NullPointerException at org.jbpm.graph.def.Action.execute(Action.java:122) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Action_$$_javassist_63.execute(Action_$$_javassist_63.java) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:259) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.node.State_$$_javassist_8.executeAction(State_$$_javassist_8.java) at org.jbpm.job.Timer.execute(Timer.java:56) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.job.Job_$$_javassist_54.execute(Job_$$_javassist_54.java) at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:173) at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64) 11:01:57,890 WARN [Timer] timer action threw exception org.jbpm.graph.def.DelegationException at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:382) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.ProcessDefinition_$$_javassist_19.raiseException(ProcessDefinition_$$_javassist_19.java) at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:373) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:276) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.node.State_$$_javassist_8.executeAction(State_$$_javassist_8.java) at org.jbpm.job.Timer.execute(Timer.java:56) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.job.Job_$$_javassist_54.execute(Job_$$_javassist_54.java) at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:173) at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64) Caused by: java.lang.NullPointerException at org.jbpm.graph.def.Action.execute(Action.java:122) 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:585) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Action_$$_javassist_63.execute(Action_$$_javassist_63.java) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:259) ... 15 more
this is the error-msg I get
<?xml version="1.0" encoding="UTF-8"?>
<process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="Timertest">
<start-state name="start">
<transition to="wait-state"></transition>
</start-state>
<state name="wait-state">
<timer name="1min-timer" duedate="10 seconds">
<action name="timer-notifier" class="org.domain.SeamProcessTest.action.TimerActionHandler">
<msg>Yippie</msg>
</action>
</timer>
<transition to="end-state1"></transition>
</state>
<end-state name="end-state1">
<event type="node-enter">
<action name="timer-notifier" expression='#{timerutils.doSomething("Hallo")}'/>
</event>
</end-state>
</process-definition>
and this is my Business-Process-Definition.
Thx for any help.
For anyone who might be interessted... The problem occured, because the timer wasn't set up correctly. I have chosen the integration via JobExecutor and once the the servlet was loaded it worked. The problem why it worked after deployment with the jbpm-console was, that I unintenionally deployed the handler to the jbpm-db.