[jboss-user] [jBPM] - Using TaskService directly

[tlucz]

tlucz [https://community.jboss.org/people/tlucz] created the discussion

"Using TaskService directly"

To view the discussion, visit: https://community.jboss.org/message/772297#772297

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Hi,
I've started using jBPM 5.3.0.Final. I want to use HumanTasks embedded in my application. So basing on thread:

 https://community.jboss.org/thread/162963?start=15&tstart=1 https://community.jboss.org/thread/162963?start=15&tstart=1

I created my own LocalHumanTaskHandler where in constructor TaskServiceSession is created:

        TaskService taskService = new TaskService(emf, SystemEventListenerFactory.getSystemEventListener());
        taskSession = taskService.createSession();
        this.session=session;

ExecuteWorkItem method is taken from GenericCommandBasedWSHumanTaskHandler. The only change is to invoke:

taskSession.addTask(task, content);

instead of:

client.addTask(task, content, new TaskAddedHandler(workItem.getId()));


I can work with HT in a way e.g.:

List<TaskSummary> taskList = wrapper.taskServiceSession.getTasksAssignedAsPotentialOwner("john", "en-UK");

wrapper.taskServiceSession.taskOperation(Operation.Complete, lastTask.getId(), "john", null, null, null);


It almost works correctly, task data is stored in DB but process instance is not updated after complete task. The problem is how can I register TaskEventHandlers. In GenericCommandBasedWSHumanTaskHandler there is a method:

private void registerTaskEventHandlers() {
TaskEventKey key = new TaskEventKey(TaskCompletedEvent.class, -1);
TaskCompletedHandler eventResponseHandler = new TaskCompletedHandler();
client.registerForEvent(key, false, eventResponseHandler);
key = new TaskEventKey(TaskFailedEvent.class, -1);
client.registerForEvent(key, false, eventResponseHandler);
key = new TaskEventKey(TaskSkippedEvent.class, -1);
client.registerForEvent(key, false, eventResponseHandler);
}

but I have no client so I have no possibility to register these events. Also TaskServiceSession object has no method to register ResponseHandlers. How can I resolve it?

I also read thread
 https://community.jboss.org/thread/204619?tstart=270 https://community.jboss.org/thread/204619?tstart=270
but in this case I have no idea how to create TaskService which I need to pass to LocalHTWorkItemHandler.

Thanks in advance for any help.
kr,
Tadeusz
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