topic NPE when trying to signal Receive Task in Alfresco Archive

NPE when trying to signal Receive Task

daveychu — Mon, 13 Oct 2014 09:10:01 GMT

Hello everyone,I'm trying to model a process where users receive a mail after which they need to verify that they read it. If they haven't verified after a certain period, another mail should be send. This should continue indefinitely until either all users have verified the mail or someone override

Re: NPE when trying to signal Receive Task

martin_grofcik — Tue, 14 Oct 2014 06:21:32 GMT

Hi Davey,

Could you create jUnit test to reproduce this exception?
To solve your problem use following jUnit test from activiti source:
org.activiti.engine.test.bpmn.event.timer.IntermediateTimerEventTest#testLoop

Regards
Martin

Re: NPE when trying to signal Receive Task

martin_grofcik — Thu, 16 Oct 2014 06:42:02 GMT

Hello Davey,

Thank you for the jUnit test - it makes things much easier.
I cloned it - but I do not have access to push changes and I do not want to fork your repository. That's why I post the solution here:


  @Test
  @Deployment(resources = {"diagrams/MyProcess.bpmn"})
  public void testName() {
    ProcessInstance pi = rule.getRuntimeService().startProcessInstanceByKey("myProcess");
    Execution execution = rule.getRuntimeService().createExecutionQuery()
      .processInstanceId(pi.getId())
      .activityId("receivetask1")
      .singleResult();
    assertNotNull(execution);

    rule.getRuntimeService().signal(execution.getId());

    assertThat("after the receive task [receivetask1] all process instances are finished",
      rule.getRuntimeService().createProcessInstanceQuery().count(), is(0L));
  }

Regards
Martin

Re: NPE when trying to signal Receive Task

daveychu — Thu, 16 Oct 2014 07:41:16 GMT

Your unit test works exactly as required. Thank you Martin! Is there an expected way to mark this topic as solved?

Kind regards,
Davey

Re: NPE when trying to signal Receive Task

jbarrez — Fri, 17 Oct 2014 09:46:51 GMT

No, sorry, no such feature here. But thanks for posting back that it works 🙂

Re: NPE when trying to signal Receive Task

daveychu — Fri, 16 Jan 2015 10:32:39 GMT

Hello Martin,

I reproduced the problem via JUnit test as requested.

Kind regards,
Davey

Re: NPE when trying to signal Receive Task

owais1 — Fri, 03 Jul 2015 07:13:34 GMT

Hi Davey,
I have a requirement wherein I am using a receive task to make a process wait until the receive task gets the required ID to continue the process.I have referred the following link:http://forums.activiti.org/content/correct-way-signal-receivetask but could not achieve the desired as I am getting errors in the code.Can you help with your code for my reference.