Activity looping/parallel for each: Output mapping and Inturrupting

Hello,
we want to model and execute an approval process with one requestor and several approvers. All assigned approvers get the approval task simultaniously to save time. Each approver can make a decision like Reject, Rework, Approve and also add comments.
Only if all Assignees make their approval, the request gets approved. On the first occuring "rework" or "reject" decision, all open tasks have to be removed from the assignees UWLs; their results become unnnecessary.
Please have a look at the corresponding model on [http://www.gm.fh-koeln.de/~wi1744/pubfiles/parallel_for_each_task.PNG].
As you can see in the model, we made an approach using a parallel for each Human activity. In our process the tasks show up in parallel on each adressed UWL. Thats fine so far but we are facing two problems.
1. Output Mapping of parallel Tasks
1.1 Are we right to assume that for each task output the activitys output mapping is done?
1.2 Are there differences to the regular output mapping we have to consider?
2. Stopping the parallel tasks and continuing the process flow .
We said as soon as any result like rework or reject comes out, the whole activity should stop and all open tasks be removed from the UWL. How can this be modeled and realised?
Thank you for any input!

Hi ,
For the 2nd question you can achieve that behavior using "Intermediate message events". I have created a dummy process [http://imageshack.us/photo/my-images/24/sdn1.png/] by which you can achieve this. Hope this helps. For the 1st question can you please be more specific about what is it you wanted to do.
Thanks & Regards,
Rohit

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We have critical problem wherein we have set a completion deadline for a task against a human activity which is parallel for each but in the runtime, a difference of 1 second is appearing for the parallel tasks generated.
We have raised a COMPLETIONDEADLINEISCRITICALEXCEPTION and if the deadline is met we are executing an ABAP RFC for auto approval.
The automated step for executing the RFC is also parallel for each. When the tasks are created only one gets cancelled on completion of deadline while others get suspended. I am assuming this is happening because of the difference of 1 sec in the completion deadline for parallel tasks in the runtime.
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Do you expect that all the parallel tasks are instantiated at exactly the same point in time? That is an unrealistic expectation....
First off, the Par Foreach doesn't spawn multiple threads, it executes each 'parallel' action in sequence in the same thread. Parallel in this context means all the actions (Task initiation) will occur and a process token will stay at each Task. For the token to pass the subsequent merge ALL the parallel tasks must be complete (all tokens must arrive at the merge). So you won't ever get all the tasks initiated at EXACTLY the same time.
Further, even if the BPM kernel did spawn multiple threads (and there are very good reasons it won't!) it is rather unlikely that in these different threads you would for sure get all the initiations at EXACTLY the same time.
If it's important that you get the task completion deadline the same in all tasks you should get a suitable timestamp in a mapping step which precedes the split and then set the deadline explicitly using that value when the task is initiated - i.e use a specific time value not an offset time value.
An FWIW you should read and understand the documentation on Boundary Events so that you can know what to expect when one is fired and you know how to handle them.
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Configure Side Camera Flash 1 Triggering.vi ‏47 KB

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<rant>
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</rant>
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Culverson Software - Elegant software that is a pleasure to use.
Culverson.com
Blog for (mostly LabVIEW) programmers: Tips And Tricks
Attachments:
ProcessChannel.png ‏25 KB

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Activity looping/parallel for each: Output mapping and Inturrupting

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