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Re: New Issue: Migration of @Action from WS-A 200408 to WS-A 1.0 [i064]

From: Mark Nottingham <mark.nottingham@bea.com>
Date: Thu, 22 Sep 2005 17:17:26 -0700
Message-Id: <6A01F860-71B1-4AC1-A895-B1E0F37FA4FE@bea.com>
Cc: <public-ws-addressing@w3.org>
To: Jonathan Marsh <jmarsh@microsoft.com>

This is now issue 064;
   http://www.w3.org/2002/ws/addr/wd-issues/#i064

Sorry for the delay.


On 30/08/2005, at 2:11 PM, Jonathan Marsh wrote:

> We’ve been exploring the best way to support both the 200408  
> version of WS-Addressing and eventually the 1.0 version in WSDL.   
> The Action attribute and the default action pattern rules pose an  
> interesting challenge.
>
>
>
> The @Action attribute serves identical purposes in the two versions  
> – they set the [action] property which is semantically the same  
> thing in both the 200408 and 1.0 versions.  We propose a non- 
> normative appendix to suggest ways users can author WSDLs that  
> allow a client to choose either version of Addressing, and that  
> unambiguously generate the same [action] values regardless of the  
> version of addressing chosen.  This appendix would highlight the  
> divergence of the default pattern between the 200408 and 1.0  
> versions and advise on how that difference can be managed.
>
>
>
> Note that in the majority of cases, the default patterns are  
> identical, requiring no explicit specification of the action in  
> either namespace to achieve the desired alignment.
>
>
>
> Proposal:
>
>
>
> Add the following non-normative appendix to the WS-Addressing WSDL  
> Binding spec.
>
>
>
> Appendix XX: Migration strategies from the 2004-08 version of WS- 
> Addressing
>
>
>
> The WS-Addressing 1.0 [action] property is semantically equivalent  
> to that described in the 2004-08 version of WS-Addressing. However,  
> the syntax (namespace of the attribute) used to specify values  
> differs in the two versions, and the default action pattern in WS- 
> Addressing 1.0 differs in two respects from that in the 2004-08  
> version: the [delimiter] can be either "/" or ":" in 1.0 while in  
> 2004-08 it is always "/", and the default action pattern for faults  
> is closer to that of other messages instead of a constant URI.
>
>
>
> Authors of WSDL that support both versions are advised to use the  
> same value for 1.0 [action] and 200408 [action].
>
>
>
> If a default action pattern is desired, we recommend the 1.0  
> default action pattern.  The 200408 [action] can be made consistent  
> with the 1.0 default by:
>
>
>
> specifying wsa200408:Action explicitly when the targetNamespace is  
> a URN, and
> specifying wsa200408:Action explicitly when the message is a fault.
>
>
> If the targetNamespace is a URN, we recommend against using the  
> 200408 default action pattern, as it leads to malformed IRIs.   
> Otherwise, if the 200408 default action pattern is used, the 1.0  
> [action] value can be made consistent by:
>
>
>
> specifying wsaw:Action explicitly when the message is a fault.
>
>
> --  Jonathan Marsh  --  jmarsh@microsoft.com  --  http:// 
> spaces.msn.com/members/auburnmarshes/  --
>
>
>
>


--
Mark Nottingham   Principal Technologist
Office of the CTO   BEA Systems

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Received on Friday, 23 September 2005 00:19:02 GMT

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