Re: [bpel4people] BP-72: Add the definition of the Human Task Process term

[Dave Ings <ings@ca.ibm.com>]

My initial thought is that these suggestions should be added to the system component architecture issue that Frank agreed to handle

http://www.osoa.org/jira/browse/BP-65

rather than being a standalone issue, but this is something we can discuss during the TC.

Regards, Dave Ings,
Emerging Software Standards
Email: ings@ca.ibm.com
Yahoo Messenger: dave_ings

Luc Clément ---2009/02/18 09:54:54 AM---Assigned: http://www.osoa.org/jira/browse/BP-72 From: Yoichi Takayama [mailto:takayama.yoichi@gmail.

From:	Luc Clément <luc.clement@activevos.com>
To:	Yoichi Takayama <takayama.yoichi@gmail.com>
Cc:	"bpel4people@lists.oasis-open.org" <bpel4people@lists.oasis-open.org>
Date:	2009/02/18 09:54 AM
Subject:	[bpel4people] BP-72: Add the definition of the Human Task Process term

---

Assigned: http://www.osoa.org/jira/browse/BP-72 
 
From: Yoichi Takayama [mailto:takayama.yoichi@gmail.com] 
Sent: Tuesday, February 17, 2009 23:48
To: Luc Clément
Cc: bpel4people@lists.oasis-open.org
Subject: new issue request
 
Target:
 
bpel4people-1.1-spec-CD-02-MARKEDUP.pdf

Description: 
 
This document mentions HumanTask Processor only 3 times in the Section 4.5.3.

920     A WS-HumanTask Processor MUST ...
 
928         HumanTask Processor hosting ...
 
948     ... WS-HumanTask 
949     Processor ...
 
While the definition for a BPEL Processor is given in Section 2.3 as below, there appears to be no clear definition or reference to what the HumanTask Processor is at this point (although the reader would find it out in WS-HumanTask document later).
 
251         BPEL4People Processor 
252         A BPEL4People Processor is any implementation that accepts a BPEL4People definition and 
253         executes the semantics defined in this document.  
 
Except that The HumanTask Processor must also return a metadata, and the metadata operation is said to refer Section 8.2 of the WS-HumanTask document.
 
It seems that, before introducing a new term, it is better to define it. Although the usage of the term is very limited in this case, the term is neither common nor self-explanatory to someone who reads this document (or works with this specification) for the first time.

Proposal:
 
Add the definition of the term at the beginning of the block or immediately after the first usage.
 
Also, clarify what it is. (1) It may be rather easy to say that it is a Web Service which hosts a Human Task and implements WS-C to interact with the BPEL4People Processor. (2) The Task Processor must be the WS-C WS-HT Protocol Service in WS-C nomenclature and probably it needs to be clarified.
 
Notes:
 
In my opinion it is better to define a Task List Manager sub-system who receives a Task request from BPEL4People processing engine. A Task Processor would rather interact with the Task List Manager, not the BPEL4People processing engine.
 
However, I understand that it could be said that it is an implementation issue since this standard does not define anything about the Task List Manager. However, this standard mentions (or the white paper did mention) the way Task List client and Task client would work, and probably that should be defined in the standard to have interpretability for providers of these and a BPEL4people Processor.
 
Yoichi
 
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Yoichi Takayama, PhD
Senior Research Fellow
RAMP Project
MELCOE (Macquarie E-Learning Centre of Excellence)
MACQUARIE UNIVERSITY
 
Phone: +61 (0)2 9850 9073
Fax: +61 (0)2 9850 6527
www.mq.edu.au
www.melcoe.mq.edu.au/projects/RAMP/
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