Reloading task possible?

[antje]

Is it possible to reactivate a task, which is found in the tasklist assigned to an user?
I tried the following code:

    public void reloadProcessByTask(final Task task) {
        m_processInstance = (ExecutionEntity) m_processEngine.getRuntimeService()
            .createExecutionQuery()
            .executionId(task.getExecutionId())
            .singleResult();

        ProcessDefinition procDef = m_processEngine.getRepositoryService()
            .createProcessDefinitionQuery()
            .id(task.getProcessDefinitionId()).singleResult();

        ((ExecutionEntity) m_processInstance).setProcessDefinition((ProcessDefinitionImpl) procDef);
    }‍‍‍‍‍‍‍‍‍‍‍‍

Later the program fails, when I try to get the activities from the processDefinition (activities are empty).
What`s wrong with the code? Is there a better solution to get an old task run?

Thanks
Antje

[frederikherema1]

Antje,

I guess you can just signal the execution, found in the RuntimeService :

/** Sends an external trigger to an activity instance that is waiting inside the given execution.
   * @param executionId id of execution to signal, cannot be null.
   * @throws ActivitiException when no execution is found for the given executionId.
   */
  void signal(String executionId);

This way, the task is considered executed. Or did you mean to put the task back in 'unnasigned' state?

[antje]

I tried signal(), but that method steps to the next task in process, so I find a list of tasks with the same executionID. What I want to do, is going to the same task again, wich was canceled before (user closed page), so the user can type his input again.
To open the page again, I need the activities defined in the processDefinition, but the list of activities is empty if I try to load it as described in the first post.

[frederikherema1]

Okay, I misunderstood the question.

Check out http://jira.codehaus.org/browse/ACT-206, this is the behaviour that you are looking for, claiming with userId 'null' should unassign the task.

[antje]

No, I don`t want to unassign it, I want to leave the page and do something else. Later I want to look into the tasklist and finish the task, which I began before and which is still assigned to me. To do that I must reload the page and find the informations about the interrupted process.

[frederikherema1]

As long as you don't complete the task, it will be available in the tasklist and the process will be halted.

Or do you want to fill in the form-data and save it without actually completing the task?

[antje]

The task isn`t the problem, I get it from the tasklist. The problem is, that I must find the matching ProcessInstance with the ProcessDefinition. The ProcessDefinition, I get on this way

        ProcessDefinition procDef = m_processEngine.getRepositoryService()
            .createProcessDefinitionQuery()
            .id(task.getProcessDefinitionId()).singleResult();

is not complete, because I miss all informations about activities inside, which I need to open the page correctly. Is there another way to get the ProcessDefiniton?

[antje]

I think, it is the same problem like this
http://forums.activiti.org/en/viewtopic.php?f=3&t=339

and this
http://forums.activiti.org/en/viewtopic.php?f=3&t=310&p=1168&hilit=processinstance#p1168

[falko_menge]

Yes, you are right.
http://forums.activiti.org/en/viewtopic.php?f=3&t=339&p=1390#p1390 contains a workaround for this problem and there is also a JIRA issue to address it: http://jira.codehaus.org/browse/ACT-172