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RE: [wsia][wsia-requirements][R602]

  • 1.  RE: [wsia][wsia-requirements][R602]

    Posted 05-08-2002 11:58
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    Subject: RE: [wsia][wsia-requirements][R602]


    Title: Message

    Composing the above discussion, how about the summary below (I tried to incorporate the debates below):

    This specification must support common Presentation Formats, which are in use today in Net-enabled applications. In particular:

    1. IMUST support HTML and XHTML as Presentation Formats.
     
    2. It MUST support JavaScript as an associated scripting language and MUST provide a way to support actions triggered by scripts. [Optional/Debate: However, it MUST NOT be assumed that scripting elements are modified by the Consumer in any way.]
     
    3. It MUST NOT preclude the use of embedded binary presentation formats (e.g., Flash, GIFs, etc.). 
    [Optional/Debate: and MUST provide a way to support actions triggered by such elements].

    However, it MUST NOT
    be assumed that binary presentation in is modified by the Consumer in any way.
     
    -----Original Message-----
    From: Rich Thompson [mailto:richt2@us.ibm.com]
    Sent: Wednesday, May 08, 2002 11:33 AM
    To: wsia@lists.oasis-open.org
    Subject: RE: [wsia][wsia-requirements][R602]


    I agree that the prevalence of JavaScript will require that we address it
    even in the first release.

    As to the meaning of "should not", RFC 2119 says:
       SHOULD NOT   This phrase, or the phrase "NOT RECOMMENDED" mean that
       there may exist valid reasons in particular circumstances when the
       particular behavior is acceptable or even useful, but the full
       implications should be understood and the case carefully weighed before
       implementing any behavior described with this label.

    I take this to mean in this context that the committee will not eliminate
    the possibility of carrying other formats (such as flash) without having
    good reasons after careful considerations of the issues and implications.
    In contrast, using "must not" is an absolute constraint ... I'm just
    concerned that we not place that constraint on ourselves without
    understanding the implications.



                                                                                                                     
                          Eilon Reshef                                                                               
                          <eilon.reshef@webc        To:       Ravi Konuru/Watson/IBM@IBMUS, wsia@lists.oasis-open.org
                          ollage.com>               cc:                                                              
                                                    Subject:  RE: [wsia][wsia-requirements][R602]                    
                          05/08/2002 10:57                                                                           
                          AM                                                                                         
                                                                                                                     
                                                                                                                     



    Ravi,

    I think that your observation that JavaScript is essentially "yet another
    binary format" catches the bull by its horns - in a way, that sharpens the
    question.

    It more than makes sense - in my view - to ignore customization of binary
    formats for the first release (at least by the Consumer, the Producer can
    always hand-code anything).

    However, to me, supporting action routing in JavaScript (even if not
    transparently) is a must. (There are way too many apps that use JavaScript
    for links and forms).

    Eilon
          -----Original Message-----
          From: Ravi Konuru [mailto:rkonuru@us.ibm.com]
          Sent: Wednesday, May 08, 2002 9:59 AM
          To: wsia@lists.oasis-open.org
          Subject: RE: [wsia][wsia-requirements][R602]





           Questions/comments:
                - Is Java script being considered non- binary in these
          discussions?
          From my perspective, it is binary.


                 - Does "Should not" mean that we will "try" not to introduce
          in our
          specification assumptions about output of a service? This is not
          verifiable. I rather say we will initially focus on XML formats but
          will
          tackle binary formats in the next rev? However, don't like this
          option. see
          next.
                - Should we define a set of guidelines for downloaded binary
          code to
          allow at least for routing if not for customization? I prefer this.
          Given
          the prevalence of downloaded code (script and flash). We should say
          what
          works and what doesn't.


          regards,
          Ravi Konuru








                                Rich


                                Thompson/Watson/I        To:
          wsia@lists.oasis-open.org


                                BM@IBMUS                 cc:


                                                         Subject:  RE:
          [wsia][wsia-requirements][R602]


                                05/06/2002 08:39


                                AM











          While I do think we need to think about how a Consumer can provide
          enough
          information that a Producer could embed action invocations and the
          like in
          binary formats, I think the last sentence needs to be a SHOULD NOT
          rather
          than a MUST NOT as it may not turn out to be feasible once we
          consider this
          for a multi-tiered chain of Producers and Consumer.






                                Eilon Reshef


                                <eilon.reshef@webc        To:       "'Alan
          Kropp'"
          <akropp@epicentric.com>,
                                ollage.com>
          wsia@lists.oasis-open.org


                                                          cc:


                                05/06/2002 01:06          Subject:  RE:
          [wsia][wsia-requirements][R602]
                                AM









          I'll put my 1.5 cents into this discussion, even though I didn't
          originally
          put my name for it :-)


          I think that it more than makes sense that we shouldn't ask the
          Consumer to
          parse and modify Flash content, Java applets, or any other binary
          format.


          The question in my mind (regarding the actual intent of this
          requirement)
          is: should the WSIA protocol *permit* some sequence of calls in which
          a
          WSIA Web Service that contains Flash/Java/ActiveX with links or forms
          would
          still work, even though it has user interaction, and even though
          "smart
          look-and-feel customization" (whatever this is) will not be offered.


          This point - although seemingly minor - may have significant
          implications
          on the actual protocol with regards to action routing.


          If we do decide that binary formats should be supported even at a
          basic
          level, then (at least according to my possibly limited understanding)
          this
          means that we must provide at least some way (not necessarily the
          "mainstream" way) for the Consumer to provide enough information to
          the
          Producer (who serves the binary data) so that the binary content is
          served
          in such a way in which all the actions are routed correctly to the
          Consumer. This means that the Producer has to take care of it, but it
          would
          make it doable.


          We at WebCollage have encountered some cases where people used Flash
          for
          parts of their applications, so it made sense for us to consider it.
          However, we need to decide whether this is something that the WSIA
          committee as a whole cares about.


          Eilon
                -----Original Message-----
                From: Alan Kropp [mailto:akropp@epicentric.com]
                Sent: Friday, May 03, 2002 8:41 PM
                To: 'wsia@lists.oasis-open.org'
                Subject: [wsia][wsia-requirements][R602]






                R602 [Flexibility]
                                This specification should support common
          Presentation


                Formats, which are in use today in Net-enabled applications. In

                particular,
                it should support HTML, XHTML, WML and XML as Presentation
          Formats.
                It must
                not preclude the use of other presentation formats (Eilon: such
          as
                Flash,
                GIFs, etc.). Debate on last sentence: AK, CW.





                I think only XML and HTML (due to its ubiquity) markups should
          be
                supported
                by name, other formats should be considered opaque in the
          markup
                stream.
                Last sentence should read:





                 It must not preclude the use of other presentation formats,
          although
                these
                (e.g., Flash, GIFs, etc.) shall be considered opaque in the
          markup
                stream.










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