[jbpm-users] [JBoss jBPM] - exception in the last node of the process

[daviddev]

Hi guy,

I have a small problem when I execute a jbpm process within my application.
my process is relatively simple and consists of:

  | ----|										----|							----|
  | 	|(signal)									|(signal)						|(signal)
  |  start-state --> node1 --> node2 --> node3 --> waiting(state) --> node4 --> waiting (state) --> node5 --> node6 --> end-state
  | 

node1 and node2: persists some data within my database
node3: send a message to an external appliation through JMS and wait for the reponse (through JMS too)
node4: persists some data in my database and send a message to an external application through JMS message and wait for the reponse (through JMS too)
node5 and node 6: persists some data in my database


the process instance is started in this way (see code below)

  | 	public void startProcess(String processName, Map<String, Object> variables) throws Exception{
  | 		
  | 		JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();
  | 		JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
  | 		
  | 		try{
  | 			ProcessInstance pInstance 			= null;
  | 			pInstance = jbpmContext.newProcessInstanceForUpdate( processName );
  | 			pInstance = jbpmContext.getProcessInstanceForUpdate( pInstance.getId() );
  | 			
  | 			Token token = pInstance.getRootToken();
  | 			token.signal();
  | 			
  | 		}catch( JpdlException e ){
  | 			...
  | 		}catch( Exception e ){
  | 			...
  | 		}finally{
  | 			jbpmContext.close();
  | 		}
  | 	}
  | 

all nodes has at the end of the execute() method a call to the leavenode() method


  |     public void execute(ExecutionContext ctx) throws Exception {
  | 		//my code here
  | 		ctx.leaveNode();
  | 	}
  | 

when the response from the external application arrives I resume the process (see the code below) in this way


  | 	public void resumeProcess( Long processId ) throws Exception{
  | 		JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance();
  | 		JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
  | 
  | 		try{
  | 
  | 			ProcessInstance pInstance = jbpmContext.getProcessInstanceForUpdate( processId );
  | 			pInstance.signal();
  | 			
  | 		}catch( Exception e ){
  | 			String msg = "Impossible to resume process. an error occured during the resuming operation. "; 
  | 			log.debug(  msg, e );
  | 			throw new Exception( msg, e );
  | 		}finally{
  | 			jbpmContext.close();
  | 		}
  | 

the process is running well meaning that each node is visited and the process is resumed (in both waiting state) when I received the response to my request through JMS message.

However I get an exception (see below) when leave the last node (i.e. node6) just before the end-state of the process.


  | 15:33:07,827 ERROR [JmsServerSession] org.jboss.resource.adapter.jms.inflow.JmsServerSession at 1a68649 failed to commit/rollback
  | javax.transaction.RollbackException: [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] Can't commit because the transaction is in aborted state
  | 	at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1401)
  | 	at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
  | 	at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
  | 	at org.jboss.resource.adapter.jms.inflow.JmsServerSession$XATransactionDemarcationStrategy.end(JmsServerSession.java:494)
  | 	at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:248)
  | 	at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204)
  | 	at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275)
  | 	at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:756)
  | 	at java.lang.Thread.run(Unknown Source)
  | Caused by: org.hibernate.QueryParameterException: could not locate named parameter [processInstance]
  | 	at org.hibernate.engine.query.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:75)
  | 	at org.hibernate.engine.query.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:81)
  | 	at org.hibernate.impl.AbstractQueryImpl.determineType(AbstractQueryImpl.java:413)
  | 	at org.hibernate.impl.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:383)
  | 	at org.jbpm.db.JobSession$DeleteJobsSynchronization.beforeCompletion(JobSession.java:191)
  | 	at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)
  | 	at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:247)
  | 	at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:86)
  | 	at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177)
  | 	at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1389)
  | 	... 8 more
  | 

If I remove the call to the leaveNode() method in the node6. 
I do not have this exception but obviously my process instance is never ended.

I do not understand what wrong in my code.
Could you give me a hand to understand this issue and solve it.

many thanks

regards

DSE


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