Examples of com.sun.sgs.app.TaskManager

com.sun.sgs.app.TaskManager
Provides facilities for scheduling tasks. Each task is a serializable object that can be scheduled to be run now, at some time in the future, or periodically. For the methods that run at some delayed point in the future, the delay is taken from the moment when the scheduling method was called.
For all methods on TaskManager, if the instance of Task provided does not implement ManagedObject then the TaskManager will persist the Task until it finishes. This provides durability, and is particularly convenient for simple tasks that the developer doesn't wish to manage and remove manually. However, if the Task does implement ManagedObject, then it's assumed that the Task is already managed, and it is up to the developer to remove it from the DataManager when finished.
If the instance of Task provided to any of these methods is an instance of a class that has the RunWithNewIdentity annotation then that task will be run with a new owning identity. Periodic tasks will use this same owning identity for all recurrences. In practical terms, this means that the system will be able to recognize these tasks as distinct behavior from other tasks in the system.
Note that there is no assumed ordering provided by implementations of this interface. If two tasks are scheduled in a given transaction, it is undefined which task will run or complete first. Likewise, if a task is scheduled and then a second scheduled in a later transaction, there is no guarantee that the task scheduled in the previous transaction will complete first. If any ordering or dependency is required, this should be implemented within the tasks themselves. @see AppContext#getTaskManager @see Task @see RunWithNewIdentity


            // schedule tasks to handle up to count operations
            if (!(opsRef.get().isTaskRunning())) {
                opsRef.get().setTaskRunning(true);


                TaskManager tm = AppContext.getTaskManager();
                tm.scheduleTask(new SharedListRevalidateTask(sender, clientID,
                                                             count, opsRef));
            }
        }

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            // schedule a task to handle more
            if (size - num > 0) {
                logger.fine("Continue " + (size - num) + " remaining tasks " +
                            " with count " + count);


                TaskManager tm = AppContext.getTaskManager();
                tm.scheduleTask(new SharedListRevalidateTask(sender, clientID,
                                                             count, opsRef));
            } else {
                logger.fine("Done running task");
                opsRef.get().setTaskRunning(false);
            }

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     * <p>
     * Runs the task {@value #DELAY_MS} ms from now,
     * repeating every {@value #PERIOD_MS} ms.
     */
    public void initialize(Properties props) {
        TaskManager taskManager = AppContext.getTaskManager();
        taskManager.schedulePeriodicTask(this, DELAY_MS, PERIOD_MS);
    }

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     * <p>
     * Runs the task {@value #DELAY_MS} ms from now,
     * repeating every {@value #PERIOD_MS} ms.
     */
    public void initialize(Properties props) {
        TaskManager taskManager = AppContext.getTaskManager();
        taskManager.schedulePeriodicTask(this, DELAY_MS, PERIOD_MS);
    }

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     */
    public void initialize(Properties props) {
        // Hold onto the task (as a managed reference)
        setSubTask(new TrivialTimedTask());


        TaskManager taskManager = AppContext.getTaskManager();
        taskManager.schedulePeriodicTask(this, DELAY_MS, PERIOD_MS);
    }

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    public void initialize(Properties props) {
        TrivialTimedTask task = new TrivialTimedTask();


        logger.log(Level.INFO, "Created task: {0}", task);


        TaskManager taskManager = AppContext.getTaskManager();
        taskManager.schedulePeriodicTask(task, DELAY_MS, PERIOD_MS);
    }

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     * the actual removal in a separate task to avoid scaling problems.
     */
    private void removeChildrenAndEntries() {
  AppContext.getDataManager().markForUpdate(this);
  modifications++;
  TaskManager taskManager = AppContext.getTaskManager();
  if (isLeafNode()) {
      taskManager.scheduleTask(new RemoveNodeEntriesTask(this));
      table = null;
  } else {
            taskManager.scheduleTask(new RemoveNodesTask<K, V>(this));
      nodeDirectory = null;
  }
    }

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        } catch (MissingResourceException mre) {
            dm = null;
        }
        dataManager = dm;
        
        TaskManager tm;
        try {
            tm = managerComponents.getComponent(TaskManager.class);
        } catch (MissingResourceException mre) {
            tm = null;
        }

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     * the actual removal in a separate task to avoid scaling problems.
     */
    private void removeChildrenAndEntries() {
  AppContext.getDataManager().markForUpdate(this);
  modifications++;
  TaskManager taskManager = AppContext.getTaskManager();
  if (isLeafNode()) {
      taskManager.scheduleTask(new RemoveNodeEntriesTask(this));
      table = null;
  } else {
            taskManager.scheduleTask(new RemoveNodesTask<K, V>(this));
      nodeDirectory = null;
  }
    }

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    // Saved messages no longer exist, so "cancel" periodic task.
    return;
      } else {
    // Remove messages saved past their expiration time.
    DataService dataService = getDataService();
    TaskManager taskManager = AppContext.getTaskManager();
    Iterator<ChannelMessageInfo> iter =
        savedMessages.values().iterator();
    while (taskManager.shouldContinue() && iter.hasNext()) {
        ChannelMessageInfo messageInfo = iter.next();
        if (messageInfo.isExpired()) {
      if (logger.isLoggable(Level.FINEST)) {
          logger.log(
        Level.FINEST,

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