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Re: New issue: Can the "use" attribute be eliminated?

From: <ryman@ca.ibm.com>
Date: Thu, 5 Sep 2002 15:28:47 -0400
To: "Gaertner, Dietmar" <Dietmar.Gaertner@softwareag.com>
Cc: "'www-ws-desc@w3.org'" <www-ws-desc@w3.org>, www-ws-desc-request@w3.org
Message-ID: <OF9C2A4E93.54573744-ON85256C2B.006A54BB@torolab.ibm.com>

FYI - the current thinking in WS-I.org is to support doc/literal and
rpc/literal, so yes rpc/literal makes sense. IMHO, SOAP encoding has caused
a lot of interop headaches. Life would be simpler if literal was all we
needed to support.

Arthur Ryman


|---------+--------------------------------->
|         |           "Gaertner, Dietmar"   |
|         |           <Dietmar.Gaertner@soft|
|         |           wareag.com>           |
|         |           Sent by:              |
|         |           www-ws-desc-request@w3|
|         |           .org                  |
|         |                                 |
|         |                                 |
|         |           09/05/2002 01:50 PM   |
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  |                                                                                                           |
  |       To:       "'www-ws-desc@w3.org'" <www-ws-desc@w3.org>                                               |
  |       cc:                                                                                                 |
  |       Subject:  New issue: Can the "use" attribute be eliminated?                                         |
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I took an action item in today's telcon to formulate
a possible new issue on whether the "use" attribute
isn't redudant and can be eliminated. This has been
discussed (among others) in the soaptf [1]. Following
is the "use" attribute rationale extracted and slightly
re-formulated.


Can the "use" attribute be eliminated?
--------------------------------------

The "use" attribute (soap:body, soap:header and soap:headerfault element)
has possible values: "literal" and "encoded". The following combinations
of style/use are possible:
  document/literal - makes sense
  document/encoded - makes sense (e.g. for docs using the SOAP data model)
  rpc/literal      - does this make sense? Probably not, because RPC
                     implies a special encoding or format.
  rpc/encoded      - makes sense (RPC even requires encoded)

Given that there can be used different encoding styles, and when
we have use="encoded" also encodingStyle="..." has to be specified,
isn't use="encoded" redundant? Even more,
- doesn't encodingStyle="someURI" imply use="encoded"
- and isn't a missing encodingStyle or encodingStyle="" equivalent
  to use="literal"?

Proposal:
  As the "use" attribute appears to be redundant
  eliminate it and just use the "encodingStyle" attribute
  to express "literal" via an empty string value and "encoded"
  via a non-empty string value.



See also:
Issue 45 [2] and 48 [3]; "use" attribute of [...] should be optional
and Arthur's encodingStyle proposal [4].

[1] http://lists.w3.org/Archives/Public/www-ws-desc/2002Jul/0039.html
[2]
http://dev.w3.org/cvsweb/~checkout~/2002/ws/desc/issues/wsd-issues.html#x45
[3]
http://dev.w3.org/cvsweb/~checkout~/2002/ws/desc/issues/wsd-issues.html#x48
[4] http://lists.w3.org/Archives/Public/www-ws-desc/2002Sep/0018.html



Regards, Dietmar.
Received on Thursday, 5 September 2002 15:29:23 GMT

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