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Re: ISSUE (3639) Which policy alternative was selected?

From: Fabian Ritzmann <Fabian.Ritzmann@Sun.COM>
Date: Mon, 09 Oct 2006 19:14:10 +0300
To: Ashok Malhotra <ashok.malhotra@oracle.com>
Cc: "public-ws-policy@w3.org" <public-ws-policy@w3.org>
Message-id: <452A7552.8070104@Sun.COM>

Ashok Malhotra wrote:
> My original motivation in raising this issue was to provide a rationale for why we
> wanted a pointer from the message to the policy (alternative) that was applied to it.  (There are
> other reasons why such a pointer may be useful, for example if the policy changes
> during the course of a long-running transaction, or to indicate policies or assertions 
> which do not affect the wire format of messages - bug 3789.)
>
> At the f2f in Bellevue the WG said:
> 1. You can add such a pointer to a msg using the SOAP extensibility mechanism but
> 2. The WG did not want to standardize such a header as it raised all manner of questions such "shd this
> be the first header."
>
> Subsequently, Dan Roth told the WG http://lists.w3.org/Archives/Public/public-ws-policy/2006Oct/0043.html
> that Microsoft products used the following solutions:
> 1. In case multiple alternatives apply, create an endpoint that supports exactly one policy alternative.
> 2. Use an out-of-band mechanism to convey which alternative was selected.  In effect, this uses an out-of-band
> mechanism instead of the pointer in the message that I wanted.
>
> So, at this point I am willing to agree to close the issue with no action.
> If others feel differently please propose the solution you would like.
>   

Regarding the suggested solutions:

1. Web services are meant to be interoperable. I don't think that any 
product-specific solution can satisfy that requirement.

2. Irrespectively of whether an in-band or out-of-band mechanism is 
chosen, it would be beneficial to have standardized solutions.

Having said that, I believe that designing a solution would take more 
time and effort than would be good for our schedule. I'd like to see 
this issue deferred to V.next.

Fabian

-- 
Fabian Ritzmann
Sun Microsystems, Inc.
Stella Business Park             Phone +358-9-525 562 96
Lars Sonckin kaari 12            Fax   +358-9-525 562 52
02600 Espoo                      Email Fabian.Ritzmann@Sun.COM
Finland
Received on Monday, 9 October 2006 16:14:08 GMT

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