RE: Participant vs Assignment

Thanks Vladimir!  This is exactly the information I was looking for!

Greg


> -----Original Message-----
> From: Vladimir Puskas [mailto:[email protected]] 
> Sent: Thursday, July 07, 2005 2:48 AM
> To: [email protected]
> Subject: Re: [shark] Participant vs Assignment
> 
> 
> Hello Greg
> 
> you wrote:
> > As far as #2 goes, I finally stumbled on
> > sharkExecutionAdministration.getResource(newUser);
> > 
> > I'd still like to find answers to #1 and #3 though.
> >> 
> >> #1) We have a pretty simple workflow that only requires one person 
> >> for each activity.  If that person is busy, we want the 
> activity to 
> >> show up in someone else's worklist however. Does this mean we're 
> >> changing the assignment or changing the participant?
> 
> XPDL spec at [1] says: "Workflow Participant Declaration provides 
> descriptions of resources that can act as the performer of 
> the various 
> activities in the process definition... The workflow participant 
> declaration does not necessarily refer to a human or a single person, 
> but may also identify a set of people of appropriate skill or 
> responsibility, or machine ..."
> 
> [2] "OMG definition: WfAssignment links WfActivity objects to 
> WfResource 
> objects... Assignments are created as part of the resource selection 
> process before an activity becomes ready for execution..."
> 
> >> #3) What does the WfResource.release(assignment, 
> activity_id); method 
> >> do?  I thought it would break the connection between a 
> WfResource and 
> >> a WfAssignment.  But, even after I called the
> >> release() method, the activity still shows in the WfResrouce's
> >> get_sequence_work_item() response.
> 
> You thought almost right - it does break connection between 
> WfResource 
> and *WfActivity*. The reason you *again* see "the same" 
> WfAssignment is 
> it has been recreated. See event audits attached or history of the 
> process (admin application->process monitor tab->show history button)
> 
> Shark kernel, on WfAssignment rejection or when creating WfActivity, 
> looks if its XPDL definition has performer, evaluates it, 
> looks through 
> participant-user mappings, than asks assignment manager with all 
> information gathered to respond with a List of WfResources 
> who will be 
> assigned to WfActivity.
> 
> AFAICS your best option would be to implement 
> AssignementManager[3] that 
> would search for next available/idle person who will receive 
> assignment.
> 
> [1] http://wfmc.org/standards/docs/TC-1025_10_xpdl_102502.pdf
> [2] 
> http://shark.objectweb.org/doc/1.1/api/SharkAPI/org/enhydra/sh
ark/api/client/wfmodel/WfAssignment.html
[3] 
http://shark.objectweb.org/doc/1.1/api/SharkAPI/org/enhydra/shark/api/in
ternal/assignment/AssignmentManager.html

hope this helps
-- 
Vlada
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