[jboss-user] [jBPM] - Re: Can a POJO be Parameter Mapped?

[Gary Struthers]

Gary Struthers [http://community.jboss.org/people/GaryS] created the discussion

"Re: Can a POJO be Parameter Mapped?"

To view the discussion, visit: http://community.jboss.org/message/618900#618900

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Thanks Demian,

I'm still doing something wrong but I don't see it.

I followed the example carefully but I am still  getting a null ServiceTask parameter. Before I get to the ServiceTask I have a HumanTask with the same POJO as input and output in my BPMN file. I'm using the example TestWorkItemHandler and not doing anything with the POJO. Do I need to?

In the ServiceTask I'm using ServiceTaskHandler.

In jUnit...
  @Test 
public void evaluateScore() throws Exception {
  // given 
final StatefulKnowledgeSession kSession = createKnowledgeSession(fr.getKbase());
                    TestWorkItemHandler testWorkItemHandler = new TestWorkItemHandler();
                    kSession.getWorkItemManager().registerWorkItemHandler("Human Task", testWorkItemHandler);
                    WorkItemManager wim = kSession.getWorkItemManager();
                    kSession.getWorkItemManager().registerWorkItemHandler("Service Task", new ServiceTaskHandler());
...
                    Map<String, Object> params = new HashMap<String, Object>();
                    params.put("vars", vars);
...
new Thread(new Runnable() {
public void run() {
                                        kSession.fireUntilHalt(); // fireAllRules hangs
                              }
                    }).start();
                    ProcessInstance pi = kSession.startProcess("x.x.x.workflow.xxx", params);
                    Thread.sleep(250);
  // then 
        assertTrue(pi.getState() == ProcessInstance.STATE_ACTIVE);
        restoreSession(kSession, true);
        WorkItem workItem = testWorkItemHandler.getWorkItem();
        assertNotNull(workItem);
        assertEquals(workItem.PENDING, workItem.getState());
...
wim.completeWorkItem(workItem.getId(), null);

After completing the HumanTask workItem it executes the ServiceTask 
public XX execute(XX vars) {
  if(vars == null) { //@FIXME shouldn't be null
                              vars = new XX();
                              vars.setValidScore(true);
                    }
  if(vars.isCanScore()) { //@TODO real implementation
                              vars.setValidScore(true);
                    }
return vars;
          }

In BPMN
...
  <itemDefinition id="_varsItem" structureRef="x.x.x.workflow.xxx" />
...

  <itemDefinition id="_11_InMessageType" structureRef=""x.x.x.workflow.xxx" />
  <message id="_11_InMessage" itemRef="_11_InMessageType" />
  <interface id="_11_ServiceInterface" name=""x.x.x.workflow.xxx.EvaluateScore">
    <operation id="_11_ServiceOperation" name="execute">
      <inMessageRef>_11_InMessage</inMessageRef>
    </operation>
  </interface>
...
    <!-- process variables -->
    <property id="vars" itemSubjectRef="_varsItem"/>
...
    <serviceTask id="_11" name="Evaluate Score" operationRef="_11_ServiceOperation" implementation="Other" >
      <ioSpecification>
        <dataInput id="_11_varsInput" name="vars" />
        <dataOutput id="_11_varsOutput" name="vars" />
<inputSet>
          <dataInputRefs>_11_varsInput</dataInputRefs>
</inputSet>
        <outputSet>
          <dataOutputRefs>_11_varsOutput</dataOutputRefs>
        </outputSet>
      </ioSpecification>
      <dataInputAssociation>
        <sourceRef>vars</sourceRef>
<targetRef>_11_varsInput</targetRef>
      </dataInputAssociation>
      <dataOutputAssociation>
<sourceRef>_11_varsOutput</sourceRef>
        <targetRef>vars</targetRef>
      </dataOutputAssociation>
    </serviceTask>

+
+
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