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Re: HST's take on Richard Tobin's conditional proposal

From: Alessandro Vernet <avernet@orbeon.com>
Date: Tue, 21 Mar 2006 16:27:21 -0800
Message-ID: <4828ceec0603211627v48351cf2qc66468e2057369e7@mail.gmail.com>
To: public-xml-processing-model-wg <public-xml-processing-model-wg@w3.org>

Hi Henry,

What you illustrate in those examples is similar to what was shown in
examples earlier by Norm and me in this list: the "choose" works on an
infoset (or sequence of infosets?) and expression for each branch is
expressed with an XPath expression.

Is this a fair statement, or am I missing the point of your example?

Alex

On 3/16/06, Henry S. Thompson <ht@inf.ed.ac.uk> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Wrt the discussion just now about conditionals, here's a pair of
> pseudo-pipeline-documents which condition processing on a property of
> the input (1) or of a computed stylesheet (2).  The 'otherwise'
> branches aren't filled in, as we didn't discuss them. . .
>
> 1)
> <pipe>
>  <subpipe input="foo.xsl" output="#computedStyle">
>   <step operation="XSLT 2.0" stylesheet="baz.xsl"/>
>   <step operation="xxx" arg="yyy.xml"/>
>  </subpipe>
>  <subpipe input="#STDIN" output="#primary">
>   <step operation="qqq" arg="rrr.xml"/>
>  </subpipe>
>  <subpipe input="#primary" output="#STDOUT">
>   <choose>
>    <when test="/doc/author/initials='ndw'">
>     <subpipe input="#primary">
>      <step operation="XSLT 2.0" stylesheet="#computedStyle"/>
>     </subpipe>
>    </when>
>    <otherwise>
>     ???
>    </otherwise>
>   </choose>
>  </subpipe>
> </pipe>
>
> 2)
> <pipe>
>  <subpipe input="foo.xsl" output="#computedStyle">
>   <step operation="XSLT 2.0" stylesheet="baz.xsl"/>
>   <step operation="xxx" arg="yyy.xml"/>
>  </subpipe>
>  <subpipe input="#STDIN" output="#primary">
>   <step operation="qqq" arg="rrr.xml"/>
>  </subpipe>
>  <subpipe input="#computedStyle" output="#STDOUT">
>   <choose>
>    <when test="/xsl:stylesheet//fo:*">
>     <subpipe input="#primary">
>      <step operation="XSLT 2.0" stylesheet="#computedStyle"/>
>     </subpipe>
>    </when>
>    <otherwise>
>     ???
>    </otherwise>
>   </choose>
>  </subpipe>
> </pipe>
>
> ht
> - --
>  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
>                      Half-time member of W3C Team
>     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
>             Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
>                    URL: http://www.ltg.ed.ac.uk/~ht/
> [mail really from me _always_ has this .sig -- mail without it is forged spam]
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>


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Received on Wednesday, 22 March 2006 00:27:39 GMT

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