Problem execute actions on jboss

[asmo]

Hello!
I have some problems with exectue Actions on a jboss server. I ve made a little test definition with a start-state, a state and an end-state. The state should execute an action. In junit, the workflow runs without any problem. But when i deploy it on a jboss, jbpm doesn t execute the action. When i ask the processinstance for its node name, i can see, that the workflow runs form one state to another. But without executing the action. I ve tried serveral kinds of action ( befor-signal, after-signal...) but without any change. Can someone tell me, what i ve made wrong? ( once again a stupid error i ve produced?? )
I use jbpm 3.1.1. and the jboss 4.0.3.sp1
my processdefinition

<?xml version="1.0" encoding="UTF-8"?>
<process-definition
 xmlns="http://jbpm.org/3/jpdl"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://jbpm.org/3/jpdl http://jbpm.org/xsd/jpdl-3.0.xsd"
 name="processActivity">
 <start-state name="start">
 <transition name="startWorkflow" to="createActivity">
 </transition>
 </start-state>
 <state name="createActivity">
 <transition name="created" to="end1"></transition>
 <event type="after-signal">
 <action name="action1" class="de.uniSiegen.crm.server.workflow.action.TestActivity"></action>
 </event>
 </state>
 <end-state name="end1"></end-state>
</process-definition>

my simple action handler:

package de.uniSiegen.crm.server.workflow.action;

import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.exe.ExecutionContext;

public class TestActivity implements ActionHandler {

 public void execute(ExecutionContext arg0) throws Exception {

 System.out.println(" in the test activity!!!!!");
 }

}

I would be very grateful for any help!

[asmo]

One appendix:
I forgot to mention, that there is no error or anything produced from jboss.

[belgianbaloo]

are you sure System.out.println(...); prints something using jBoss server?

[asmo]

I have also tried an log4j info output. but there is also nothing to see on jboss ( the log4j is ok, i can see other info outputs...)

[asmo]

Makes it a differenz, wether the workflow runs i a web application or in a backend?
If i put my workflow in the war archiv of my web application, i can execute it without any problem. If i try it in the backend ( jar archiv ), the workflow runs without execute the actions.
Is there any reason, why jbpm should run in the backend?

[asmo]

In the meantime, i could isolate the problem a little bit.
If i create a processinstance direct on the parsed processdefinition, jbpm executes the action.


step 1:

try{

 JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance("jbpm.cfg.xml");


 JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
 GraphSession graphSession = jbpmContext.getGraphSession();

 ProcessDefinition processDefinition =ProcessDefinition.parseXmlResource("activityWorkflow.par/processdefinition.xml");

 ProcessInstance processInstance = processDefinition.createProcessInstance();

 processInstance.signal("startWorkflow");
 processInstance.signal("created");

 jbpmContext.save(processInstance);

 }catch(Exception e){
 e.printStackTrace();
 }finally{
 jbpmContext.close();
 }
 }

If i first save the processInstance and later load it back from the database, the action won't execute.

JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance("jbpm.cfg.xml");

JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();

 try{
 GraphSession graphSession = jbpmContext.getGraphSession();

 ProcessDefinition processDefinition =ProcessDefinition.parseXmlResource("activityWorkflow.par/processdefinition.xml");

 ProcessInstance processInstance = processDefinition.
 Long id = Long.valueOf(processInstance.getId());

 jbpmContext.deployProcessDefinition(processDefinition);
 jbpmContext.save(processInstance);
 }catch(Exception e){
 e.printStackTrace;
 }finally{
 jbpmContext.close();
 }
return id;

step 2:

JbpmConfiguration jbmpConfiguration = JbpmConfiguration.getInstance("jbpm.cfg.xml");
JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
try{
 GraphSession graphSession = jbpmContext.getGraphSession();

 ProcessInstance processInstance = graphSession.loadProcessInstance(processId.longValue());

 processInstance.signal();
 jbpmContext.save(processInstance);
 }catch(Exception e){
 e.printStackTrace;
 }finally{
 jbpmContext.close();
}

Is there something wrong in the way i save and load the processInstance?

[asmo]

Hello!
During the debuging i can see, that of the values of the processInstance, which i loaded from the graphSession are null.
For example the processDefinition of the processInstance is null.
In the database, the ProcessDefinition for the ProcessInstance is correctly set.
So i guess, it is maybe a problem with hibernate.
Has someone an idee, what i can do?
It seems, that i am the only one, who has this problem so i guess, it is a really stupid error, i have produced....

[grimshieldsson]

If I undestand you correctly... It works fine in the junit, but not in the war when you load the process from the DB... I would start looking at class loader issues. All of my actions and other JBPM code is in WEB-INF/class. If your putting it somewhere else, you might have issues.. Assuming it is a class loader problem.

[kukeltje]

GrimShieldsson is correct and the pi being null is normal behaviour since the id is generated by hibernate and that is not used in the non-db tests

[asmo]

Thanks for your replies!
GrimShieldsson, my problem is a little bit different.
everything works fine, as all my actions and jbpm code was in the web-inf/class of my war. But than someone told my, that i shouldn't run jbpm in the frontend.
So i put all the code in the backend and created a stateless session bean. these methods sould called form the jsf-managed beans for starting the process....
So far so good, i can start the process and the process instance runs through the single steps, but without execute the actions.
The junit test runs without failure so i guess, the problem is concerned with the jboss.
is it generally better to run jbpm in the war?
or is it maybee generally wrong to put the code in the backend?

[asmo]

After a little more reading in the forum, i came to the conclusion, that having the jbpm code in the WEB-INF/class dir is the best way.
Am i right?
Is this just best practise or are there fundamental reasons?
Maybee i should make a new thread, that issue has a little realation to this one....