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Re: NVDL?

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Thu, 25 Sep 2008 21:41:00 +0100
To: George Cristian Bina <george@oxygenxml.com>
Cc: xproc-dev@w3.org
Message-ID: <f5b7i90uffn.fsf@hildegard.inf.ed.ac.uk>

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Assuming it's just a matter of pass/fail, then an XProc implementation
of NVDL to handle the kind of example you offer is straightforward:

 <p:pipeline type="my:nvdl" xmlns:n="http://www.oxygenxml.com/nvdl"
name="nvdl">
 <p:viewport match="n:validate">
  <p:load name="loadSchema">
   <p:with-option name="href" select="@schema"/>
  </p:load>
  <p:choose>
   <p:xpath-context>
    <p:pipe step="nvdl" port="source"/>
   </p:xpath-context>
   <p:when test="string-ends(@href,'rng')">
    <p:documentation><p>Is this <em>really</em> how choice of
validator is done
in NVDL?  Otherwise I can't guess. . .</p></p:documentation>
    <p:validate-with-relax-ng>
     <p:input port="source">
      <p:pipe step="nvdl" port="source"/>
     </p:input>
     <p:input port="schema">
      <p:pipe step="loadSchema" port="result"/>
     </p:input>
    </p:validate-with-relax-ng>
   </p:when>
   <p:when test="string-ends(@href,'xsd')">
    <p:validate-with-xml-schema>
     <p:input port="source">
      <p:pipe step="nvdl" port="source"/>
     </p:input>
     <p:input port="schema">
      <p:pipe step="loadSchema" port="result"/>
     </p:input>
    </p:validate-with-xml-schema>
   </p:when>
  </p:choose>
 </p:viewport>
</p:pipeline>

ht
- -- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
                         Half-time member of W3C Team
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, 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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Received on Thursday, 25 September 2008 20:41:44 GMT

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