Re: 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/shark/api/client/wfmodel/WfAssignment.html
[3] 
http://shark.objectweb.org/doc/1.1/api/SharkAPI/org/enhydra/shark/api/internal/assignment/AssignmentManager.html

hope this helps
-- 
Vlada

2005-07-07 08:02:10:531	Process instantiated
2005-07-07 08:02:10:576	Process changed state to open.not_running.not_started
2005-07-07 08:02:10:622	Process context changed 
2005-07-07 08:02:10:894	Process changed state from open.not_running.not_started to open.running
2005-07-07 08:02:10:986	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] changed state to open.not_running.not_started
2005-07-07 08:02:10:990	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] context changed 
2005-07-07 08:02:11:146	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] is assigned to qq
2005-07-07 08:02:31:943	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] is accepted by qq
2005-07-07 08:02:31:946	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] changed state from open.not_running.not_started to open.running
2005-07-07 08:02:46:482	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] is rejected by qq
2005-07-07 08:02:46:483	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] changed state from open.running to open.not_running.not_started
2005-07-07 08:02:46:496	Activity [actDefId=specification, actId=101_101_test_bs_specrelease_specification] is assigned to qq

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