Jbpm 4.0 error prone code...

[jay9981]

We are using Client API for building process definition from XML file and starting execution by using the process def:

Attach is code where we are getting some hibernate error.


protected void processJob(){
WorkflowProcessInstance wpi = (WorkflowProcessInstance) this.getJobDataObject();
ExecutionImpl pi = wpi.getJbpmProcessInstace();
if((pi.getState().equals(ProcessInstance.STATE_CREATED))) {
pi.start();
}
while (!pi.isEnded()) {
if (!terminateJob) {
ServerUtils.log(ServerUtils.DEBUG," Moving to next stage.");
String execName = null;
Iterator itr = pi.findActiveActivityNames().iterator();
while(itr.hasNext()) {
execName = (String)itr.next();
ExecutionImpl execution = pi.findActiveExecutionIn(execName);
if(execution.getState().equals(Execution.STATE_INACTIVE_CONCURRENT_ROOT) ||
execution.getState().equals(Execution.STATE_INACTIVE_JOIN) ||
execution.getState().equals(Execution.STATE_INACTIVE_SCOPE)) {
execution = execution.getExecutions().iterator().next();
}
if (execution.isActive() && !execution.isEnded()) {
execution.signal(); pi = execution.getProcessInstance();
}
}
} else {
pi.end();
}
}
}


The highlighted line gives error when it signals on end state (Means when the workflow ends). It state hibernate error as listed below.



org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [org.jbpm.pvm.internal.history.model.HistoryProcessInstanceImpl#0]
at org.hibernate.impl.SessionFactoryImpl$2.handleEntityNotFound(SessionFactoryImpl.java:409)
at org.hibernate.proxy.AbstractLazyInitializer.checkTargetState(AbstractLazyInitializer.java:108)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:97)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:140)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:190)
at org.jbpm.pvm.internal.history.model.HistoryProcessInstanceImpl_$$_javassist_2.setEndTime(HistoryProcessInstanceImpl_$$_javassist_2.java)
at org.jbpm.pvm.internal.history.events.ProcessInstanceEnd.process(ProcessInstanceEnd.java:41)
at org.jbpm.pvm.internal.history.HistorySessionImpl.process(HistorySessionImpl.java:31)
at org.jbpm.pvm.internal.history.HistoryEvent.fire(HistoryEvent.java:61)
at org.jbpm.pvm.internal.model.ExecutionImpl.end(ExecutionImpl.java:353)
at org.jbpm.pvm.internal.model.ExecutionImpl.end(ExecutionImpl.java:311)
at org.jbpm.jpdl.internal.activity.EndActivity.execute(EndActivity.java:80)
at org.jbpm.jpdl.internal.activity.EndActivity.execute(EndActivity.java:45)
at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:60)
at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:637)
at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:597)
at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:398)
at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:380)
at com.santafe.soa.server.engine.workflow.WorkflowJob.processJob(WorkflowJob.java:95)
at com.santafe.soa.server.engine.workflow.WorkflowJob.run(WorkflowJob.java:123)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)