topic Re: Start and access new process instance from running process in Alfresco Archive

Start and access new process instance from running process

flurina — Tue, 26 Nov 2013 09:13:55 GMT

After upgrading from Activiti 5.10 to 5.14 we're facing a problem with a ScriptTask of a running process that needs to start another ProcessInstance.As you can see in the code below, we want to start a new ProcessInstance and afterwards access its first task to add a CandidateGroup to it.RepositoryS

Re: Start and access new process instance from running process

trademak — Tue, 26 Nov 2013 12:57:28 GMT

Can you share the process definition? If it's possible to create a unit test showing the issue, that would be even better.

Best regards,

Re: Start and access new process instance from running process

flurina — Wed, 27 Nov 2013 10:38:37 GMT

I uploaded a Maven project showing the issue. You can find it here https://www.dropbox.com/sh/k79hjzmu407jfvs/SEy-aY23DS .
As you will see, the test does not finish now, because the ScriptTask cannot access the newly created ProcessInstance.
If you change the Activiti version back to 5.10 everything will run through smoothly and the test will succeed. I don't think that the issue is located in version 5.14 though, as the same problem already occurs from version 5.11 on.

Thanks a lot,
Flurina

Re: Start and access new process instance from running process

trademak — Thu, 28 Nov 2013 12:53:14 GMT

Thanks for uploading your project that makes it a lot easier to discuss.
The problem is that the process that's started by the script task is not yet committed to the database before the "parent" process reaches a wait state. So that's why you won't get a user task back.
I changed your example, to include a second asynchronous script task that does the task query. So the first script task is only starting the process instance. And that works fine. Instead of using a script task to start the other process instance you could also use a call activity.

Best regards,

Re: Start and access new process instance from running process

flurina — Mon, 06 Jan 2014 08:07:00 GMT

Thanks a lot for helping with the issue. We were able to resolve it by using two asynchronous script tasks, as you suggested.

Kind regards,

Flurina