Examples of thread.concurrencyCookbook.chapter4.recipe8.Task

Package thread.concurrencyCookbook.chapter4.recipe8

Examples of thread.concurrencyCookbook.chapter4.recipe8.Task

org.eclipse.bpmn2.Task
This class implements the task of the example. Writes a message to the console with the actual date. Is used to explain the utilization of an scheduled executor to execute tasks periodically

  @Test
  public void testUpdate() throws Exception {
    XmlObject xmlObject = XmlObject.Factory.parse(this.getClass().getResource("/update.xml"));
    Assert.assertNotNull(xmlObject);
        System.out.println(xmlObject.toString());
        Task taskElement = Task.Factory.newInstance();
        TaskMetadata metadata = taskElement.addNewMetadata();
        
        metadata.set(new TaskUnmarshaller().expectElement(xmlObject, "taskMetadata"));
        System.out.println(taskElement.getMetadata().getTaskId());
  }

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    // Creates the Task
    Task task=new Task();
    // Creates the Thread
    Thread thread=new Thread(task);
    // Sets de uncaugh exceptio handler
    thread.setUncaughtExceptionHandler(new ExceptionHandler());
    // Starts the Thread
    thread.start();
    
    try {
      thread.join();

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   * exception 
   * @param args
   */
  public static void main(String[] args) {
    // Creates the Task
    Task task=new Task();
    // Creates the Thread
    Thread thread=new Thread(task);
    // Sets de uncaugh exceptio handler
    thread.setUncaughtExceptionHandler(new ExceptionHandler());
    // Starts the Thread

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    ScheduledExecutorService executor=Executors.newScheduledThreadPool(1);
    System.out.printf("Main: Starting at: %s\n",new Date());


    // Create a new task and sends it to the executor. It will start with a delay of 1 second and then
    // it will execute every two seconds
    Task task=new Task("Task");
    ScheduledFuture<?> result=executor.scheduleAtFixedRate(task, 1, 2, TimeUnit.SECONDS);
    
    // Controlling the execution of tasks
    for (int i=0; i<10; i++){
      System.out.printf("Main: Delay: %d\n",result.getDelay(TimeUnit.MILLISECONDS));

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        Bpmn2JsonUnmarshaller unmarshaller = new Bpmn2JsonUnmarshaller();
        Definitions definitions = ((Definitions) unmarshaller.unmarshall(getTestJsonFile("sequenceFlow.json"), "").getContents().get(0));
        assertTrue(definitions.getRootElements().size() == 1);
        Process process = getRootProcess(definitions);
        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 = ((Definitions) unmarshaller.unmarshall(getTestJsonFile("association.json"), "").getContents().get(0));
        assertTrue(definitions.getRootElements().size() == 1);
        Process process = getRootProcess(definitions);
        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 = ((Definitions) unmarshaller.unmarshall(getTestJsonFile("associationOne.json"), "").getContents().get(0));
        Process process = getRootProcess(definitions);
        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 = ((Definitions) unmarshaller.unmarshall(getTestJsonFile("associationBoth.json"), "").getContents().get(0));
        Process process = getRootProcess(definitions);
        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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    private void updateTaskDataInputs(FlowElementsContainer container, Definitions def) {
        List<FlowElement> flowElements = container.getFlowElements();
        for(FlowElement fe : flowElements) {
            if(fe instanceof Task && !(fe instanceof UserTask)) {
                Task task = (Task) fe;
                boolean foundReadOnlyServiceTask = false;
                Iterator<FeatureMap.Entry> iter = task.getAnyAttribute().iterator();
                while(iter.hasNext()) {
                    FeatureMap.Entry entry = iter.next();
                    if(entry.getEStructuralFeature().getName().equals("taskName")) {
                        if(entry.getValue().equals("ReadOnlyService")) {
                            foundReadOnlyServiceTask = true;
                        }
                    }
                }


                if(foundReadOnlyServiceTask) {
                    if(task.getDataInputAssociations() != null) {
                        List<DataInputAssociation> dataInputAssociations = task.getDataInputAssociations();
                        for(DataInputAssociation dia : dataInputAssociations) {
                            if(dia.getTargetRef().getId().endsWith("TaskNameInput")) {
                                ((FormalExpression) dia.getAssignment().get(0).getFrom()).setBody("ReadOnlyService");
                            }
                        }

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            if (result == null)
                result = defaultCase(theEObject);
            return result;
        }
        case Bpmn2Package.TASK: {
            Task task = (Task) theEObject;
            T result = caseTask(task);
            if (result == null)
                result = caseActivity(task);
            if (result == null)
                result = caseInteractionNode(task);

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