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Re: Issue 71: Additional actors

From: christopher ferris <chris.ferris@east.sun.com>
Date: Thu, 06 Sep 2001 10:13:14 -0400
Message-ID: <3B97847A.C7400880@east.Sun.COM>
To: Henrik Frystyk Nielsen <henrikn@microsoft.com>
CC: Mark Nottingham <mnot@mnot.net>, Mark Jones <jones@research.att.com>, xml-dist-app@w3.org
Henrik,

It seems to me that this issue is not understanding, but
acting. Mark is asking for a canonical actor URI that
can be used to signify that "this block has no target actor"
such that it can never be mistaken for a block which
MUST be processed (such as in the case where the block
is referenced by another block that may have a specific
actor.

I see no reason why the WG shouldn't be able to assign a specific
actor URI that serves this purpose.

Cheers,

Chris


Henrik Frystyk Nielsen wrote:
> 
> You can always wrap it into another block like this:
> 
>   <s:Envelope xmlns:s="http://www.w3.org/2001/06/soap-envelope">
>    <s:Header>
>     <c:thisDoesNothing xmlns:c="http://www.noop.org">
>       <a:whatever xmlns:a="http://www.example.org" id="foo">
>          ...
>       </a:whatever>
>     </c:thisDoesNothing>
>     <b:thisDoesSomething xmlns:b="http://www.example.org">
>       <blah ref="#foo"/>
>     </b:thisDoesSomething>
>    </s:Header>
>    <s:Body>
>      ...
>    </s:Body>
>   </s:Envelope>
> 
> I am still struggeling for a real-world scenario where we can't leave
> the definition of what "mustnotthinkyouunderstand" means to a wrapper
> module?
> 
> It seems to me that the only purpose of a non-matching actor is to
> override the default semantics for a block and say that regardless of
> what processing rules that block may have had initially, this is now
> nullified and the contents of the block is merely "dead data" without
> any processing rules or semantics associated.
> 
> The reason is that in section 2.2 [1] states: "In processing a SOAP
> message, a SOAP node is said to act in the role of one or more SOAP
> actors, each of which is identified by a URI known as the SOAP actor
> name". Furthermore, section 2.3 [2] states that "We say that a SOAP
> block is targeted to a SOAP node if the SOAP actor (if present) on the
> block matches (see [10]) a role played by the SOAP node, or in the case
> of a SOAP block with no actor attribute information item (including SOAP
> body blocks), if the SOAP node has assumed the role of the anonymous
> SOAP actor."
> 
> However, while mustUnderstand has the property that it is up to the
> block/module to define what "mustUnderstand" really means,
> "mustnotthinkyouunderstand" doesn't and so it is not clear to me what to
> do with it: can I apply schema processing to it? What can I use the data
> for as it wasn't really for me?
> 
> Henrik Frystyk Nielsen
> mailto:henrikn@microsoft.com
> 
> [1] http://www.w3.org/2000/xp/Group/1/08/29/soap12-part1.html#N321
> [2] http://www.w3.org/2000/xp/Group/1/08/29/soap12-part1.html#N32D
Received on Thursday, 6 September 2001 10:13:16 GMT

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