[jboss-user] [jBPM] - Re: Proposed temporary and limited approach to supporting excluded owners

[Gary Struthers]

Gary Struthers [https://community.jboss.org/people/garyaiki] created the discussion

"Re: Proposed temporary and limited approach to supporting excluded owners"

To view the discussion, visit: https://community.jboss.org/message/646765#646765

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Excluded owners are needed for for peer review. The roles stay the same, unlike an approval process.

The WS-HumanTask specification has generic roles with excluded owners but leaves much to be decided by implementers. Unlike other roles it should be dynamically updated when a user completes a task, and it's a negative query parameter. Also, an excludedOwners list must be specific to either roles, swimlanes or tasks within a process instance.

jBPM makes the first owner of a task the owner of all following tasks in that role for the process instance. This saves unneeded task reassignment but use cases for excluded users shouldn't work this way.

I think these use cases are necessary and sufficient.

Main Use Case
1. user claims a task.
2. user completes the task and the process definition specifies that user is excluded from further tasks in a role for that process instance.
3. for the next task in that role call getPotentialOwners IN (roles) AND NOT IN (excludedOwners)
4. repeat step 1
Secondary Use Case
1. user claims a task which has excludedOwners.
2. user completes a task and the process definition specifies that the excludedOwners list for that process definition is cleared.
3. formerly excluded owner can claim next task.
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