6 Replies Latest reply on Jan 23, 2008 8:54 AM by stuart grassie

    problems creating task instances

    stuart grassie Newbie

      Hi,

      I'm having a problem creating task instances, specifically for the 1st task node in the fairly simple workflow I've created. I can create the first task ok, and I can end it, and save the instance.
      However upon creating the context again and reloading the process instance, things go badly - I can't create a task instance from there.

      Here is a JUnit4 test case that illustrates what I am trying to do, and the processdefinition.xml is below. If anyone can point out what I'm doing wrong or point me in the right direction, I'd be most grateful.

      @Test
       public void nativeTaskInstanceCommits() {
       File f = TestFiles.getFile("SimpleWorkflow");
       JbpmContext context = JbpmConfiguration.getInstance().createJbpmContext();
      
       try {
       jbpmContext.setActorId("user");
       ProcessDefinition processDefinition = ProcessDefinition.parseXmlReader(new FileReader(f));
       context.deployProcessDefinition(processDefinition);
      
       ProcessInstance processInstance = new ProcessInstance(processDefinition);
       context.save(processInstance);
      
       TaskInstance taskInstance = processInstance.getTaskMgmtInstance().createStartTaskInstance();
       Long id = processInstance.getId();
       Assert.assertTrue("startTask".equals(taskInstance.getName()));
       taskInstance.end();
       context.save(taskInstance);
       context.close();
      
       context = JbpmConfiguration.getInstance().createJbpmContext();
      
       //this doesn't seem to work for me
       processInstance = context.loadProcessInstanceForUpdate(id);
       taskInstance = processInstance.getTaskMgmtInstance().createTaskInstance();
       Assert.assertTrue("firstTask".equals(taskInstance.getName()));
      
       List<?> list = taskInstance.getToken().getNode().getLeavingTransitions();
      
       for(Object o : list) {
       Transition trans = (Transition)o;
       String name = trans.getName();
       Assert.assertTrue( (name.equals("finish")) || (name.equals("to taskNode2")) );
       }
      
       taskInstance.end("finish");
       Assert.assertTrue("end".equals(taskInstance.getToken().getNode().getName()));
      
       } catch (RuntimeException e) {
       Assert.fail(e.getMessage());
       }
       catch (Exception e) {
       Assert.fail(e.getMessage());
       }
       }
      

      <?xml version="1.0" encoding="UTF-8"?>
      
      <process-definition xmlns="" name="SimpleWorkflow">
      
      
       <swimlane name="swimlane1">
       <assignment expression="user(test)"></assignment>
       </swimlane>
      
      
       <start-state name="start">
       <task name="startTask" swimlane="swimlane1">
       <description>
       The start node's Task
       </description>
       </task>
       <transition to="taskNode1" name="starting transition"></transition>
       </start-state>
      
      
       <task-node name="taskNode1">
       <task swimlane="swimlane1" name="firstTask">
       <description>
       The first task in the workflow
       </description>
       </task>
       <transition to="taskNode2" name="to taskNode2"></transition>
       <transition to="end" name="finish"></transition>
       </task-node>
      
       <task-node name="taskNode2">
       <task name="secondTask" swimlane="swimlane1">
       <description>
       The second task in the workflow
       </description>
       </task>
       <transition to="end" name="to end"></transition>
       </task-node>
      
      
       <end-state name="end"></end-state>
      
      
      </process-definition>