Receive task status change events

hohhashi

When someone changes the status of a task by "Actions menu" in the task List in the Portal, can application receive the change event?
For example, when someone does Delegate action, application process receives the event that has information about who was delegated and start the process.

Lukas Lieb

I'm unaware of any public API where you could listen to such events.
What is your use case?

hohhashi

Please let me put it simply.
A Task has a record key of the table in a ivy application in its CustomFields. for example
ITask.current().customFields().stringField("myDataId").set("record id");
When the status of the task is changed to Destroyed, I would like to delete the record or change state value of the record column immediately by a ivy application process.

Lukas Lieb

Hm...

Technically there is a way, but as I said it is not PublicAPI, so there is no guarantee that it will not break when you update.

You can create a ProgramStart, e.g. something like:

And then in the bean of this ProgramStart you can listen for workflow events, something like:

public class WorkflowListenerBean extends AbstractProcessStartEventBean implements IWorkflowListener {

  private IWorkflowManager manager;

  public WorkflowListenerBean() {
    super("TestBean", "Description of TestBean");
    manager = IWorkflowManager.instance();
  }

  @Override
  public void start(IProgressMonitor monitor) throws ServiceException {
    super.start(monitor);
    manager.addWorkflowListener(this);
  }

  @Override
  public void stop(IProgressMonitor monitor) throws ServiceException {
    super.stop(monitor);
    manager.removeWorkflowListener(this);
  }

  @Override
  public void workflowChanged(WorkflowChangeEvent changeEvent) {
    if (IWorkflowEvent.class.equals(changeEvent.workflowObjectClass())) {
      var event = manager.findWorkflowEvent(changeEvent.workflowObjectId());
      if (event.getEventKind() == WorkflowEventKind.EVENT_DESTROY_TASK) {
        String firingReason = "";
        Map<String, Object> parameters = new HashMap<>();
        try {
          getEventBeanRuntime().fireProcessStartEventRequest(null, firingReason, parameters);
        } catch (RequestException ex) {
          ex.printStackTrace();
        }
      }
    }
  }
}

You can also access the current task from this event e.g. via event.getTask()

But be careful, e.g. you cannot use Ivy API inside of the workflowChanged method, as you have no guarantee that the code runs on the correct thread where the Ivy environment is correctly setup.