Examples of org.jgroups.util.Scheduler$Task

org.jgroups.util.Scheduler
Implementation of a priority scheduler. The scheduler maintains a queue to the end of which all tasks are added. It continually looks at the first queue element, assigns a thread to it, runs the thread and waits for completion. When a new priority task is added, it will be added to the head of the queue and the scheduler will be interrupted. In this case, the currently handled task is suspended, and the one at the head of the queue handled. This is recursive: a priority task can always be interrupted by another priority task. Resursion ends when no more priority tasks are added, or when the thread pool is exhausted. @author Bela Ban

      super(fp, "Task", "Create Task");
    }


    @Override
    protected Task createFlowElement(ICreateContext context) {
      Task task = ModelHandler.FACTORY.createTask();
      task.setName("Task Name");
      return task;
    }

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    public CreateTaskFeature(IFeatureProvider fp) {
      super(fp, "Log Task", "Create Log Task");
    }


    protected Task createFlowElement(ICreateContext context) {
      Task task = ModelHandler.FACTORY.createTask();
      task.setName("Log Task");
      ArrayList<EStructuralFeature> attributes = Bpmn2Preferences
          .getAttributes(task.eClass());
      for (EStructuralFeature eStructuralFeature : attributes) {
        if (eStructuralFeature.getName().equals("taskName"))
          task.eSet(eStructuralFeature, "log");
      }
      return task;
    }

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    public CreateTaskFeature(IFeatureProvider fp) {
      super(fp, "Email Task", "Create Email Task");
    }


    protected Task createFlowElement(ICreateContext context) {
      Task task = ModelHandler.FACTORY.createTask();
      task.setName("Email Task");
      ArrayList<EStructuralFeature> attributes = Bpmn2Preferences
          .getAttributes(task.eClass());
      for (EStructuralFeature eStructuralFeature : attributes) {
        if (eStructuralFeature.getName().equals("taskName"))
          task.eSet(eStructuralFeature, "email");
      }
      return task;
    }

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        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = unmarshaller.unmarshall(getTestJsonFile("sequenceFlow.json"));
        assertTrue(definitions.getRootElements().size() == 1);
        Process process = (Process) definitions.getRootElements().get(0);
        assertTrue(process.getFlowElements().get(0) instanceof Task);
        Task task = (Task) process.getFlowElements().get(0);
        assertEquals("task1", task.getName());
        Task task2 = (Task) process.getFlowElements().get(1);
        assertEquals("task2", task2.getName());
        SequenceFlow flow = (SequenceFlow) process.getFlowElements().get(2);
        assertEquals("seqFlow", flow.getName());
        assertEquals(task, flow.getSourceRef());
        assertEquals(task2, flow.getTargetRef());
        definitions.eResource().save(System.out, Collections.emptyMap());

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    public void testAssociationUnmarshalling() throws Exception {
        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = unmarshaller.unmarshall(getTestJsonFile("association.json"));
        assertTrue(definitions.getRootElements().size() == 1);
        Process process = (Process) definitions.getRootElements().get(0);
        Task g = (Task) process.getFlowElements().get(0);
        assertEquals("task", g.getName());
        TextAnnotation textA = (TextAnnotation) process.getArtifacts().get(0);
        Association association = (Association) process.getArtifacts().get(1);
        assertEquals(g, association.getSourceRef());
        assertEquals(textA, association.getTargetRef());
        assertEquals(AssociationDirection.NONE, association.getAssociationDirection());

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    @Test
    public void testAssociationUnidirectionalUnmarshalling() throws Exception {
        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = unmarshaller.unmarshall(getTestJsonFile("associationOne.json"));
        Process process = (Process) definitions.getRootElements().get(0);
        Task g = (Task) process.getFlowElements().get(0);
        assertEquals("task", g.getName());
        TextAnnotation textA = (TextAnnotation) process.getArtifacts().get(0);
        Association association = (Association) process.getArtifacts().get(1);
        assertEquals(g, association.getSourceRef());
        assertEquals(textA, association.getTargetRef());
        assertEquals(AssociationDirection.ONE, association.getAssociationDirection());

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    @Test
    public void testAssociationBidirectionalUnmarshalling() throws Exception {
        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = unmarshaller.unmarshall(getTestJsonFile("associationBoth.json"));
        Process process = (Process) definitions.getRootElements().get(0);
        Task g = (Task) process.getFlowElements().get(0);
        assertEquals("task", g.getName());
        TextAnnotation textA = (TextAnnotation) process.getArtifacts().get(0);
        Association association = (Association) process.getArtifacts().get(1);
        assertEquals(g, association.getSourceRef());
        assertEquals(textA, association.getTargetRef());
        assertEquals(AssociationDirection.BOTH, association.getAssociationDirection());

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    @Test
    public void testDoubleLaneUnmarshalling() throws Exception {
        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = unmarshaller.unmarshall(getTestJsonFile("doubleLane.json"));
        Process process = (Process) definitions.getRootElements().get(0);
        Task g = (Task) process.getFlowElements().get(0);
        assertEquals("task", g.getName());
        assertTrue(process.getLaneSets().size() == 1);
        assertTrue(process.getLaneSets().get(0).getLanes().size() == 1);
        Lane firstLane = process.getLaneSets().get(0).getLanes().get(0);
        assertEquals("First lane", firstLane.getName());
        Lane secondLane = firstLane.getChildLaneSet().getLanes().get(0);

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    }




    void startScheduler() {
        if(scheduler == null) {
            scheduler=new Scheduler();
            if(deadlock_detection && call_stack_setter == null) {
                call_stack_setter=new CallStackSetter();
                scheduler.setListener(call_stack_setter);
            }
            if(concurrent_processing)

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        super(name);
    }




    public void testScheduler() throws Exception {
        Scheduler sch=new Scheduler();
        sch.setListener(new Listener());
        sch.add(new MyThread("Bela"));
        sch.add(new MyThread("Janet"));
        sch.add(new MyThread("Ralph"));
        sch.start();
        sch.add(new MyThread("Frank"));
        sch.add(new MyThread("Marco"));


        Util.sleep(1000);
        sch.addPrio(new MyThread("Gabi"));
        sch.add(new MyThread("Rolf"));
        Util.sleep(100);
        sch.addPrio(new MyThread("Gabi2"));
        Util.sleep(100);
        sch.addPrio(new MyThread("Gabi3"));
        Util.sleep(100);
        sch.addPrio(new MyThread("Gabi4"));
        Util.sleep(1000);  // increase this if you want to see all thread running (and possibly completing)
        sch.stop();
    }

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