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Change to the RPC signature extension (Was: [revised] Proposed resolutions for issues 146 and 150)

From: Roberto Chinnici <Roberto.Chinnici@Sun.COM>
Date: Mon, 15 Mar 2004 11:29:43 -0800
To: Jonathan Marsh <jmarsh@microsoft.com>
Cc: WS Description List <www-ws-desc@w3.org>
Message-id: <40560427.3080906@sun.com>

Jonathan,

I see you're using #any and #empty as "special" tokens in your
proposal. In the RPC signature extension I used ##in, ##out, etc.
(i.e. two initial "#" characters). I think it'd be better
to harmonize the two proposals -- I usually have trouble
remembering when to use ##other and when #all in XML Schema.
Or was it #other and ##all?  ;-)

Anyway, it seems that one "#" character is sufficient to distinguish
tokens from QNames, so I'd like to amend the definition of the
RPC signature extension to use the same convention:
#in/#out/#inout/#return.

As a purely editorial change, unless I get any objections I'll update
the spec accordingly.

Thanks,
Roberto


Jonathan Marsh wrote:
> Here's an update to my proposal [.0] for issues 146 [.1] "Should WSDL be
> able to describe an operation with *anything* in the message?" and 150
> [.2] "Indicating empty bodies".
> 
> When using XML Schemas, the element attribute points to a QName of a
> GED, preventing either empty bodies, or unconstrained content.  Special
> values of the element attribute could indicate these conditions.
> 
> Status quo:
>   <xs:attribute name="element" type="xs:QName" use="optional" />
> 
> Proposal:
>   <xs:attribute name="element" type="elementReference" use="optional" />
> 
>   <xs:simpleType name="elementReference">
>     <xs:union>
>       <xs:simpleType memberTypes="xs:QName">
>         <xs:restriction base="xs:token">
>           <xs:enumeration value="#any"/>
>           <xs:enumeration value="#empty"/>
>         </xs:restriction>
>       </xs:simpleType>
>     </xs:union>
>   </xs:simpleType>
> 
> {message content model} A token with one of the values '#any', '#empty',
> or '#element'.  A value of #any indicates that there are no restrictions
> on the message structure.  A value of empty indicates there is no
> message content.  A value of element indicates that the message consists
> of a single element described by the global element declaration
> reference by the {element} property. 
>  
> {element} A reference to an XML element declaration in the {element
> declarations} property of 2.1.1 The Definitions Component. This element
> represents the content or "payload" of the message.  When the {message
> content model} property has the value #any or #empty the element
> property is empty.
> 
> The mapping from XML into these properties should be fairly obvious.
> 
> [.0] http://lists.w3.org/Archives/Public/www-ws-desc/2004Mar/0058.html
> [.1] http://www.w3.org/2002/ws/desc/2/06/issues.html#x146 
> [.2] http://www.w3.org/2002/ws/desc/2/06/issues.html#x150
Received on Monday, 15 March 2004 14:29:54 GMT

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