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Fw: proposal to add an {action} property to message and fault reference components

From: Sanjiva Weerawarana <sanjiva@opensource.lk>
Date: Thu, 21 Apr 2005 17:44:33 +0600
Message-ID: <009201c54667$811e4e70$6800a8c0@LANKABOOK>
To: <public-ws-addressing@w3.org>

Oops, wrong addr. Please copy the WSDL WG list if you reply (and
wish the WSDL folks to see it).



----- Original Message ----- 
From: "Sanjiva Weerawarana" <sanjiva@opensource.lk>
To: <www-ws-desc@w3.org>
Cc: <www-ws-addressing@w3.org>
Sent: Thursday, April 21, 2005 5:33 PM
Subject: proposal to add an {action} property to message and fault reference

> This is to close the action item I've had pending since the Nov
> F2F. (That's the one related to the operation name feature
> minority opinion I believe.)
> I propose that we add an OPTIONAL {action} property to message and
> fault reference components. The value of this property would be a
> URI (or an IRI going with the WS-Addr style). The rules for
> this are basically what are written down in "WS Addressing 1.0 -
> WSDL Binding" in section 3. Basically:
> - user may set any value
> - if a value is not set there's an algorithm defined to compute
>   a default (see the WS-Addr doc for the algorithm)
> The second part is the SOAP and HTTP bindings of this stuff. For
> SOAP its quite easy and obvious:
> - for SOAP 1.1, the value of the action property populates the
>   SOAPAction header.
> - for SOAP 1.2, the value populates the "action" property of the
>   content type header.
> In either case, if WS-Addressing is engaged, then the value
> of the {action} property becomes the value of wsa:Action (as
> well (?); yes I believe so).
> How do you indicate that WS-Addressing is engaged? That's easy;
> you use <wsoap:module uri=".."/> to turn on the WS-Addressing
> module by using the URI defined by the WS-Addr specification.
> The HTTP binding- there's no obvious solution but I see a couple
> of approaches that could work. The simplest is to define a
> special query parameter name (is that the right word?) to
> add to the location property; say "wsdl:Action". So the value
> would find its way into the HTTP URI as a query parameter then.
> The alternative is to define a variation of one of the input
> serializations (or augment one of them; not sure) to handle
> the additional parameter, may be to put it as part of the path
> itself. IMO the idea of having an automagic query parameter is
> the simplest approach and works just fine.
> Thus if we adopt this proposal we could also remove
> /binding/operation/@wsoap:action, thereby eliminating a very
> common reason to have to re-list operations in the binding. Ah,
> simplification.
> =====
> This proposal amounts to shamelessly copying the good work done
> by the WS-Addr group to our document. After we agree to do that,
> I suggest we ask them to drop that part from their doc and simply
> refer to our doc. Of course they will continue to document how
> to do it for WSDL 1.1.
> Doing this makes our two specs work together really quite seamlessly.
> It seems to me that doing anything less would be uncivilized.
> Comments from the WS-Addr folks would be very welcome too; hence
> the cc.
> Sanjiva.
> (Observer/Invited Expert on the WSDL group ;-)!)
Received on Thursday, 21 April 2005 11:56:29 UTC

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