RE: Questions on Document submission

["Newcomer, Eric" <Eric.Newcomer@iona.com>]

Title: Message

Jean-Jacques,

 

I'll try to answer the best I can.  Please let me know if the answers are not clear, or if you have additional questions.  I expect these kinds of difficulties to lead to clarifiying edits to the text.

 

See >> below.

Thanks,

Eric

-----Original Message-----
From: Jean-Jacques Dubray [mailto:jeanjadu@Attachmate.com]
Sent: Tuesday, November 04, 2003 9:57 PM
To: Newcomer, Eric; ws-caf
Subject: Questions on Document submission

Eric:

 

I have a few questions about the documents that you provided. I don't know who is the best person to address these questions:

 

primer:

p11: a Web Service is identified ... on the header...   -> in the header of what ? every message that his this service, in an initialization message?

 

>> In the simplest case, where the composite Web services take responsibility for managing their own context, it would be every message in an interaction.  Meaning that the appearance of the context URI in the header of the message indicates that the Web service requester is asking the Web service receiver to participate in the same composite application, by definition sharing the same context.

 

primer and ws-cf:

I am trying to establish a distinction between coordination and composite apps and I am having difficulty. It seems that a coordinator is both a part of a composite app (providing its services to the CA), and managing several CAs.

 

>> The main difference a coordinator brings is that it provides a software agent to manage context on behalf of the Web services participating in a composite application.  In this case, instead of simply sharing context, Web services also register themselves with the coordinator so that the coordinator can take care of quality of service items such as persisting the context, ensuring every Web service in the composite has a consistent view of the context, and that the coordinator can also drive additional protocols across the participants that register (such as transactional protocols).

 

What is the relationship between coordination and orchestration? (participants, activities, coordination points, ...). Is coordination a special form of orchestration?

 

>> Coordination plays a supporting role to orchestration, managing context where system and/or persistent data needs to be shared among serviecs in the composite, and recovery protocols in the case of failure handling during the execution of an orchestration flow.

 

thanks,

 

Jean-Jacques
tel: 425-649-6584
Cell: 508-333-7634

-----Original Message-----
From: Newcomer, Eric [mailto:Eric.Newcomer@iona.com]
Sent: Friday, October 31, 2003 9:06 AM
To: ws-caf
Subject: [ws-caf] Document submission

Dear WS-CAF TC Members,

 

On behalf of the companies sponsoring the WS-CAF collaborative effort, Arjuna Technologies, Fujitsu Software, IONA Technologies, Oracle Corporation, and Sun Microsystems, I am very pleased to submit the WS-CAF set of specifications (WS-Context, WS-Coordination Framework, and WS-Transaction Management, along with the Primer) to OASIS under royalty free terms and conditions.

 

The WS-CAF companies listed above are the authors and copyright holders of these specifications, which from this point forward will be under control of the OASIS WS-CAF Technical Comittee.  The purpose of submitting these specifications is to allow them to be progressed toward OASIS standards by the TC.

 

Regards,

 

Eric Newcomer

IONA Technologies