RE: [bpel4people] NEW ISSUE: Priority of a Task and Potential OwnerPrivilege (1/3)

[Gerhard Pfau <GPFAU@de.ibm.com>]

Hi Alireza and Alan, 

I agree with Alireza's reasoning for
not allowing potential owner or owners of a human task to change its priority.
The priority defined in WS-HT is the priority of the task as defined by
the modeler, potentially altered by the business administrator or stake
holder. 

Alan, I also agree that In practice
there will be the need for people to specify sort criteria for ordering
the tasks in their task lists according to their personal needs. Alireza's
example for the potential owners in my mind demonstrates that using the
human task priority field for this is not really possible, at least not
without affecting other people (which I assume we would not want to). Therefore
IMO while the personal sorting scenario is important this is something
that should be addressed separately, preferably on the task list client
using mechanisms out of band for WS-HT. 

Best regards,

Gerhard

	Gerhard Pfau
	IBM Senior Technical Staff Member
	Lead Architect, Human Task Manager
	Member, IBM Academy of Technology Member, Technical Expert Council CR
	phone: fax: mobile:	+49-(0)7031-16-4899 +49-(0)7031-16-4890 +49-(0)160-533-6578

"Make everything as simple as possible, but not simpler." - Albert Einstein

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From:	"Alireza Farhoush" <alireza@tibco.com>
To:	<alan.rickayzen@sap.com>
Cc:	<bpel4people@lists.oasis-open.org>
Date:	04/16/2009 05:22 PM
Subject:	RE: [bpel4people] NEW ISSUE: Priority of a Task and Potential Owner Privilege (1/3)

---

Hi Alan,
 
I am not sure where the conflict
of interest lies. Perhaps you can elaborate.
 
The primary concern of Task
Priorities is that tasks are processed according to their envisioned priority
as intended by the task stakeholder/administrator.
 
In certain areas, authorization
is, and should be, a concern; Table 6.1.5, ‘Operation Authorizations,’
defines the required authorizations.
 
Also, as I stated earlier,
multiple potential owners of a task may change the priority of a task according
to their own work queue and not to the overall progress of the process;
this will affect the intended assigned priority. Furthermore, a task priority
may be low from the perspective of one potential owner but high from the
perspective of another. How do you reconcile this difference? Limiting
the authorization to task stakeholders or business administrators can prevent
potential problems.
 
Regards.
 
Alireza
 
From: Rickayzen, Alan [mailto:alan.rickayzen@sap.com]
Sent: Wednesday, April 01, 2009 10:19 AM
To: Alireza Farhoush; bpel4people@lists.oasis-open.org
Subject: RE: [bpel4people] NEW ISSUE: Priority of a Task and Potential
Owner Privilege (1/3)

Hi Aliriza,

It seems to me that it there will be conflicting interests between:

1. business administrator

2. process stakeholder

3. task owner

4. task stakeholder

5. task stakeholder's boss juggling different tasks and activities.

In my opinion all should be able to change the priority since a clash of interests cannot be avoided and each needs the flexibility.

The whole point of the priority-change is the transparency that this supports not the authorization so I'd prefer keeping it as is.

Best regards,

Alan Rickayzen

---

From: Alireza Farhoush [mailto:alireza@tibco.com]
Sent: Monday 23 February 2009 16:33
To: bpel4people@lists.oasis-open.org
Subject: [bpel4people] NEW ISSUE: Priority of a Task and Potential
Owner Privilege (1/3)
I am following up on the discussion we
had during our last meeting. I have outlined below a change (1/3) to the
WS-HumanTask Specification Version 1.1 document that I proposed. 
 
Regards,
 
Alireza Farhoush
 
 
TARGET: WS-HumanTask Specification Version
1.1 CD02
 
DESCRIPTION: 
In Section 3.1, ‘Generic Human Roles’,
in the 4th paragraph, a statement reads:
 
“...potential owners can influence the
progress of the task, for example by changing the priority of the task.”
 
Shouldn’t changing a task priority be
performed only by the stakeholder or the business administrator? Multiple
potential owners could independently modify the priority as they see fit
(and perhaps never acquire a task).
 
PROPOSAL:
Limit the privilege of changing task priority
to Task Stakeholder and Business Administrator.

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