How to 'deploy' a TaskListener?

[bhj2]

Hello,

I would like to add a tasklistener to my process but am only using my own version of the explorer(and not probe, cycle, …).

I created my bpmn20 process containing a usertask and a listener:

<userTask id="writeSomethingTask" name="Write something" activiti:formKey="org/activiti/mytestversion/processes/someform.form" activiti:assignee="${initiator}">
   <documentation>Write something.</documentation>
   <extensionElements>
      <activiti:taskListener event="create" class="org.activiti.mytestversion.listeners.myTaskListener" />
   </extensionElements>
</userTask>
‍‍‍‍‍‍‍‍

The problem is that when I start my process, the listener is not found. I got the following exception:

com.vaadin.event.ListenerMethod$MethodException
Cause: java.lang.NoClassDefFoundError: org/activiti/engine/impl/persistence/entity/ExecutionEntity
   at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
   at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:162)
   at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1166)
   at com.vaadin.ui.Button.fireClick(Button.java:380)
   at com.vaadin.ui.Button.changeVariables(Button.java:196)
   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariableBurst(AbstractCommunicationManager.java:1297)
   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1217)
   at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:733)
   at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:296)
   at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:483)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
   at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
   at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
   at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
   at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
   at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
   at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170)
   at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
   at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
   at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
   at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
   at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
   at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
   at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
   at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
   at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
   at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
   at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
   at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
   at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
   at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NoClassDefFoundError: org/activiti/engine/impl/persistence/entity/ExecutionEntity
   at ch.glue.egovrunner.explorer.listeners.OsisTaskCreateListener.notify(OsisTaskCreateListener.java:35)
   at org.activiti.engine.impl.bpmn.helper.ClassDelegate.notify(ClassDelegate.java:82)
   at org.activiti.engine.impl.task.TaskEntity.fireEvent(TaskEntity.java:478)
   at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.execute(UserTaskActivityBehavior.java:70)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:48)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:45)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:44)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:61)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:111)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.runtime.ExecutionEntity.take(ExecutionEntity.java:341)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:92)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:49)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:44)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:44)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:63)
   at org.activiti.engine.impl.runtime.ExecutionEntity.performOperation(ExecutionEntity.java:496)
   at org.activiti.engine.impl.runtime.ExecutionEntity.start(ExecutionEntity.java:289)
   at org.activiti.engine.impl.cmd.SubmitStartFormCmd.execute(SubmitStartFormCmd.java:77)
   at org.activiti.engine.impl.cmd.SubmitStartFormCmd.execute(SubmitStartFormCmd.java:35)
   at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
   at org.activiti.engine.impl.FormServiceImpl.submitStartFormData(FormServiceImpl.java:69)
   at ch.glue.egovrunner.explorer.ui.process.ProcessPresenter.submitStartForm(ProcessPresenter.java:93)
   at ch.glue.egovrunner.explorer.ui.form.FormWindowImpl$1.buttonClick(FormWindowImpl.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:597)
   at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:490)
   … 35 more
Caused by: java.lang.ClassNotFoundException: org.activiti.engine.impl.persistence.entity.ExecutionEntity
   at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1518)
   at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1368)
   … 92 more
|#]

Can anybody tell me how to "deploy" my TaskListener so that my process can find it? Actually, I'm just deploying my war file on glassfish.

Best regards!

bhj2

[jbarrez]

It looks like the Activiti jar is no on your classpath.

[bhj2]

The jar is in the classpath but the listener is not in the jar.

So if I understand, that would mean that the tasklistener MUST be in the activiti jar file?

Is there another solution than re compiling the activiti's jar file containing my task listener?

Thank you for your answer!

bhj2

[ronald_van_kuij]

no, it must be on the classpath, not in the jar.

But do you use the rest api? Then make sure the each jar is on all the relevant classpaths (I do not use the rest api, so no clear idea which that all are, I know there has been some explanation in the forum)

[bhj2]

no, it must be on the classpath, not in the jar.

But do you use the rest api? Then make sure the each jar is on all the relevant classpaths (I do not use the rest api, so no clear idea which that all are, I know there has been some explanation in the forum)

Thank you. It is working now!