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Subject: OASIS Call for Participation: OASIS WS-BPEL Extension for People (BPEL4People) TC

To:  OASIS members & interested parties

   A new OASIS technical committee is being formed. The OASIS WS-BPEL Extension
for People (BPEL4People) Technical Committee has been proposed by the members of
OASIS listed below. The proposal, below, meets the requirements of the OASIS TC
Process [a]. The TC name, statement of purpose, scope, list of deliverables,
audience, and language specified in the proposal will constitute the TC's
official charter. Submissions of technology for consideration by the TC, and the
beginning of technical discussions, may occur no sooner than the TC's first

   This TC will operate under our 2005 IPR Policy [b]. The eligibility
requirements for becoming a participant in the TC at the first meeting (see
details below) are that:

   (a) you must be an employee of an OASIS member organization or an individual
member of OASIS;
   (b) the OASIS member must sign the OASIS membership agreement [c];
   (c) you must notify the TC chair of your intent to participate at least 15
days prior to the first meeting, which members may do by using the "Join this
TC" button on the TC's public page at [d]; and
   (d) you must attend the first meeting of the TC, at the time and date fixed

Of course, participants also may join the TC at a later time. OASIS and the TC
welcomes all interested parties.

   Non-OASIS members who wish to participate may contact us about joining OASIS
[c]. In addition, the public may access the information resources maintained for
each TC: a mail list archive, document repository and public comments facility,
which will be linked from the TC's public home page at [d].

   Please feel free to forward this announcement to any other appropriate lists.
OASIS is an open standards organization; we encourage your feedback.



Mary P McRae
Manager of TC Administration, OASIS
email: mary.mcrae@oasis-open.org  
web: www.oasis-open.org 

[a] http://www.oasis-open.org/committees/process.php
[b] http://www.oasis-open.org/who/intellectualproperty.php  
[c] See http://www.oasis-open.org/join/ 
[d] http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=bpel4people  

OASIS WS-BPEL Extension for People (BPEL4People) TC


1a. Name (and abbreviation) of the Technical Committee

OASIS WS-BPEL Extension for People (BPEL4People) Technical Committee

1b. Statement of Purpose

The purpose of the WS-BPEL Extension for People (BPEL4People) Technical  
Committee (TC) is to define (1) extensions to the OASIS WS-BPEL 2.0  
Standard to enable human interactions and (2) a model of human  
interactions that are service-enabled. This work will be carried out  
through continued refinement of the BPEL4People and WS-HumanTask  
specifications (see section References) to be submitted to the TC as  
referenced later in this charter.

1c. Scope of Work

The TC will accept as input Version 1.0 of the BPEL4People  
specification, and Version 1.0 of the WS-HumanTask specification as  
published by Adobe, Active Endpoints, BEA, IBM, Oracle and SAP AG  
(see section References).

Other contributions and changes to the input documents will be  
accepted for consideration without any prejudice or restrictions and  
evaluated based on technical merit in so far as they conform to this  
charter. OASIS members with extensive experience and knowledge in  
related areas are particularly invited to participate.

This work will focus on:

* Defining the specification of a WS-BPEL extension enabling the  
definition of human interactions ("human tasks") as part of a WS-BPEL  
* Defining the specification of a model enabling the definition of  
human tasks that are exposed as Web services
* Defining a programming interface enabling human task client  
applications to work with human tasks

WS-BPEL Extension (BPEL4People Specification)

The WS-BPEL Extension Specification will define the following:
* Concept of people activity
* Composition model for human tasks and processes supporting at least  
the following:
    o Inline human tasks in one people activity of a WS-BPEL process,  
without re-use
    o Inline human tasks in a WS-BPEL process for re-use in multiple  
people activities
    o Standalone human tasks for re-use in multiple WS-BPEL  
processes. The life-cycle of processes and human tasks is tightly  
coupled using the coordination protocol implemented in a vendor  
specific manner
    o Standalone human tasks for re-use in multiple WS-BPEL  
processes. The life-cycle of processes and human tasks is tightly  
coupled using the coordination protocol and protocol service  
standardized by WS-HumanTask
    o Standalone human tasks, without using a particular coordination  
protocol, callable using plain Web services means, for re-use between  
WS-BPEL processes (invokes) and other Web services clients
* Concept of inline human tasks within a people activity and within a  
WS-BPEL process. Inline human tasks within a WS-BPEL process can be  
reused by different people activities within that process
* Allow people activity to reference a standalone human task  
(introduced in WS-HumanTask)
* Concept of people activity context and mechanism to access the  
context from the people activity definition and from elsewhere in the  
enclosing scope
* Semantics of people activity states and lifecycle
    o States and basic operations for people activities aligned with  
the corresponding states and operations of standalone human tasks
* Concept of generic human roles for processes
* Definition of process specific people assignments
* Mechanism to use logical people groups in WS-BPEL assignments
* Support for time-based conditions on people activities, e.g.  
deferred activation of a human task
* Support of specific interaction patterns
    o Four-eyes principle (a.k.a. separation of duties)
* Enablement of human tasks to access context information from the  
surrounding process including previous people activities and the  
corresponding human tasks.
* Extension mechanism
* Ad-hoc Attachments

Human Task Enablement (WS-HumanTask Specification)

The WS-Human Task Specification will define the following:
* Concept of human tasks (i.e. tasks and notifications) as an  
explicit entity independent from any process definition
* Concept of human task context and mechanism to access the context  
from the task definition
* Concept of generic human roles for human tasks
* Concept of logical people groups as an abstraction for assigned  
people used to hide access to organizational directories
* Definition of people assignments
* Data types representing individuals associated with human tasks
* Semantics of task states and task lifecycle
* Basic operations (API) for client application interactions with  
human tasks
* Coordination protocol for processes (or other applications)  
interacting with human tasks
* Handling of deadlines including escalation
* Support of specific interaction patterns
    o Nomination
    o Delegation
    o Escalation
* Extension mechanism

Potential additional features

In addition to the specification features described above, the TC may  
explore the inclusion of the following features and topics, providing  
that the technical approach chosen does not contradict the scope  
described above:
* Single user screen flow (chained execution)
* Workflow patterns commonly encountered in document-centric and  
people-centric workflows including:
    o Sequential approval through a management chain
    o Parallel approval and voting
    o Approval management, group vote
    o Pushback
    o RequestInfo					
* Basic operations (API) for client application interactions with WS- 
BPEL processes (e.g. adding or deleting attachments)

Out of Scope

The following is a non-exhaustive list. It is provided only for the  
sake of clarity. If some function, mechanism or feature is not  
mentioned here, and is not mentioned in the Scope of Work section  
either, then it will be deemed to be out of scope.

The following items are specifically out of scope of the work of the TC:
* Authorization definitions
* Deployment
* Monitoring
* Organizational directories (e.g., Human Resources)
    o Definition of such directories
    o Specific mechanisms (including protocols) to query such  
* Task execution rendering and definition of user interface elements

1d. Deliverables

The TC has the following set of deliverables:
* A revised BPEL4People specification and associated schema. A  
Committee Specification is targeted for completion within 18 months  
of the first TC meeting.
* A revised WS-HumanTask specification with associated schema. A  
Committee Specification is targeted for completion within 18 months  
of the first TC meeting.

These specifications will reflect refinements, corrections or  
material technological improvements with respect to the input  
documents and in accordance with this charter.


Once the TC has completed work on a deliverable and it has become an  
OASIS Standard, the TC will enter "maintenance mode" for the  

The purpose of maintenance mode is to provide minor revisions to  
previously adopted deliverables to clarify ambiguities,  
inconsistencies and obvious errors.  Maintenance mode is not intended  
to enhance a deliverable or to extend its functionality.

The TC will collect issues raised against the deliverables and  
periodically process those issues. Issues that request or require new  
or enhanced functionality shall be marked as enhancement requests and  
set aside. Issues that result in the clarification or correction of  
the deliverables shall be processed. The TC shall maintain a list of  
these adopted clarifications and shall periodically create a new  
minor revision of the deliverables including these updates.  
Periodically, but at least once a year, the TC shall produce and vote  
upon a new minor revision of the deliverables.

1e. IPR Mode

This TC will operate under the "RF (Royalty Free) on Limited Terms"  
IPR mode as defined in the OASIS Intellectual Property Rights (IPR)  

1f. Anticipated Audience

The anticipated audience for the documents produced by this TC includes:

* Software vendors supporting WS-BPEL 2.0.
* Software vendors offering products to support human-centric processes.
* Software developers, architects and other roles involved with  
design, development, deployment and maintenance of WS-BPEL  
applications and human-centric processes.

1g. TC Language

TC business will be conducted in English.

2.Required Non-Normative Information

2a. Similar or Related Work

The BPEL4People specification and the WS-HumanTask specification may  
have dependencies on different technologies, such as
* BPEL4People: WS-HumanTask, WS-BPEL, WSDL, XPath, and XML Schema
* WS-HumanTask: WSDL, XML Schema, XPath, WS-Addressing, WS- 
Coordination, WS-Policy
The TC will decide which version of these specifications will be used  
in their final work.

Liaisons will be established with other OASIS Technical Committees as  
determined appropriate by the members of the Technical Committee as  
work proceeds.

2b. Date, Time and Location of First Meeting

Date: March 5, 2008
Time: 11:00 EDT
Duration: 2 hours
Mode: Teleconference
Telephone: Dial-in TBD
Sponsor: Oracle

2c. Projected Meeting Schedule

It is anticipated that the BPEL4People TC will regularly meet via  
teleconference (e.g. weekly or bi-weekly) at a time determined by the  
TC members during the TC's first meeting.
It is anticipated that the BPEL4People TC will regularly meet face to  
face, every quarter if needed, at a time and location to be  
determined by the TC members.

2d. TC Supporters

The following eligible individuals are in support of this proposal:

* Ashish Agrawal, Adobe, ashish@adobe.com
* Mike Amend, BEA, mamend@bea.com
* Chris Keller, Active Endpoints, chris.keller@active-endpoints.com
* Ed Cobb, BEA, ecobb@bea.com
* Dave Ings, IBM, ings@ca.ibm.com
* Matthias Kloppmann, IBM, matthias-kloppmann@de.ibm.com
* Dieter Koenig, IBM, dieterkoenig@de.ibm.com
* Frank Leymann, IBM, Frank.Leymann@informatik.uni-stuttgart.de
* Jeff Mischkinsky, Oracle, jeff.mischkinsky@oracle.com
* Gerhard Pfau, IBM, GPFAU@de.ibm.com
* Karsten Ploesser, SAP, karsten.ploesser@sap.com
* Alan Rickayzen, SAP, alan.rickayzen@sap.com
* Michael Rowley, BEA, mrowley@bea.com
* Ron Ten-Hove, SUN, ronald.ten-hove@Sun.COM
* Ivana Trickovic, SAP, ivana.trickovic@sap.com
* Claus von Riegen, SAP, claus.von.riegen@sap.com
* Vicki Shipkowitz, SAP, vicki.shipkowitz@sap.com
* Prasad Yendluri, Software AG, Prasad.Yendluri@SoftwareAG.com

2e. TC Convener

The TC Convener is Jeff Mischkinsky, Oracle,  

2f. Member Section Affiliation

The TC does not intend to affiliate with an OASIS Member Section.

2g. Anticipated Contributions

It is expected that Active Endpoints, Adobe, BEA, IBM, Oracle, and  
SAP AG will contribute the BPEL4People v1 and WS-HumanTask v1  
specifications [1-6] and any other related documents such as errata,  
and that such documents will be the starting point contribution for  
initiating the work of this TC.


[1] http://www.active-endpoints.com/active-bpel-for-people.htm 
[2] http://www.adobe.com/devnet/livecycle/articles/bpel4people_overview.html  
[3] http://dev2dev.bea.com/arch2arch/ 
[5] http://www.oracle.com/technology/tech/standards/bpel4people/ 
[6] https://www.sdn.sap.com/irj/sdn/bpel4people 

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