jBPM issues with timers and jobs
Hi, i have issues with Seam and jBPM integration with timers and jobs.
I created in a jBPM workflow a task that launches a timer :
<state name="waitForAdminMail">
<event type="timer-create">
<action name="timerCreated" class="com.rtw.web.bpm.ChangeDueDateActionHandler">
<timerName>varTimer</timerName>
<delay>#{adminDueDate}</delay>
</action>
</event>
<timer duedate="10 years" name="varTimer" transition="fired">
<action name="message" expression="#{registration.sendAdminApproval()}">
</action>
</timer>
<!-- exception-handler exception-class=""></exception-handler -->
<transition to="end" name="isMailSent"></transition>
<transition to="end" name="notFired"></transition>
</state>The timer is executed by the JobExecutor thread started by a servlet.
<servlet> <servlet-name>JobExecutorServlet</servlet-name> <servlet-class>org.jbpm.job.executor.JobExecutorServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet>
But i have 2 issues with this :
- the action sendAdminApproval is executed twice. I put a debugger and it turns out that the SeamExpressionEvaluator evals the expression as both a MethodExpression and a ValueExpression. So it's executed twice. It does not happen when the jBPM token is started from a Seam component.
- I got exceptions in my stack trace (and the process does not return its initial state) This error seems to be more related to jBPM :
javax.el.ELException: org.jbpm.JbpmException: couldn't delete jobs for org.jbpm.graph.exe.ProcessInstance@f1a77 at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:333) at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:274) at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59) at org.jboss.el.parser.AstMethodSuffix.invoke(AstMethodSuffix.java:65) at org.jboss.el.parser.AstValue.invoke(AstValue.java:96) at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276) at org.jboss.seam.bpm.SeamExpressionEvaluator$1.evaluate(SeamExpressionEvaluator.java:92) at org.jboss.seam.bpm.SeamExpressionEvaluator.evaluate(SeamExpressionEvaluator.java:45) at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:39) at org.jbpm.jpdl.el.impl.JbpmExpressionEvaluator.evaluate(JbpmExpressionEvaluator.java:30) at org.jbpm.graph.def.Action.execute(Action.java:118) 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 org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Action_$$_javassist_40.execute(Action_$$_javassist_40.java) at org.jboss.seam.bpm.SeamUserCodeInterceptor$1.process(SeamUserCodeInterceptor.java:80) at org.jboss.seam.bpm.SeamUserCodeInterceptor$ContextualCall.run(SeamUserCodeInterceptor.java:40) at org.jboss.seam.bpm.SeamUserCodeInterceptor.executeAction(SeamUserCodeInterceptor.java:74) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:257) 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 org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.node.State_$$_javassist_80.executeAction(State_$$_javassist_80.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:597) at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.job.Job_$$_javassist_90.execute(Job_$$_javassist_90.java) at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:173) at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64) Caused by: org.jbpm.JbpmException: couldn't delete jobs for 'org.jbpm.graph.exe.ProcessInstance@f1a77' at org.jbpm.db.JobSession.deleteJobsForProcessInstance(JobSession.java:210) at org.jbpm.scheduler.db.DbSchedulerService.deleteTimersByProcessInstance(DbSchedulerService.java:54) at org.jbpm.graph.exe.ProcessInstance.end(ProcessInstance.java:329) at org.jbpm.graph.exe.Token.notifyParentOfTokenEnd(Token.java:329) at org.jbpm.graph.exe.Token.end(Token.java:301) at org.jbpm.graph.exe.Token.end(Token.java:251) at org.jbpm.graph.node.EndState.execute(EndState.java:59) at org.jbpm.graph.def.Node.enter(Node.java:318) 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 org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Node_$$_javassist_86.enter(Node_$$_javassist_86.java) at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:393) 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 org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.def.Node_$$_javassist_86.leave(Node_$$_javassist_86.java) at org.jbpm.graph.exe.Token.signal(Token.java:192) at org.jbpm.graph.exe.Token.signal(Token.java:155) 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 org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173) at org.jbpm.graph.exe.Token_$$_javassist_22.signal(Token_$$_javassist_22.java) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:282) at org.jboss.seam.bpm.BusinessProcess.transition(BusinessProcess.java:235) at org.jboss.seam.bpm.BusinessProcessInterceptor.afterInvocation(BusinessProcessInterceptor.java:130) at org.jboss.seam.bpm.BusinessProcessInterceptor.aroundInvoke(BusinessProcessInterceptor.java:51) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166) at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102) at com.rtw.web.action.RegistrationProcessAction_$$_javassist_5.sendAdminApproval(RegistrationProcessAction_$$_javassist_5.java) 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 org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:329) ... 35 more Caused by: org.hibernate.TransactionException: could not register synchronization at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:309) at org.jbpm.db.JobSession.deleteJobsForProcessInstance(JobSession.java:207) ... 80 more Caused by: java.lang.NullPointerException at org.hibernate.transaction.JTATransaction.registerSynchronization(JTATransaction.java:306) ... 81 more
Has anybody managed to use jBPM jobs and timers with Seam ?
Seam : 2.1.0.sp1
JBoss : 4.2.3
jBPM-jpdl: 3.2.3
Thanks in advance
Luc