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Re: defaulting

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Thu, 28 Jun 2007 15:43:32 +0100
To: Richard Tobin <richard@inf.ed.ac.uk>
Cc: public-xml-processing-model-wg@w3.org
Message-ID: <f5bk5togmwb.fsf@hildegard.inf.ed.ac.uk>

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Richard Tobin <richard@inf.ed.ac.uk>, Henry Thompson writes:

> 3) Pipelines w/o a declared default output get an un-named default
>    output iff their last contained step has an unbound default output.

I actually think we should go further and apply this to all compound
steps which allow outputs at all:

  3') Compound steps which allow output declarations (that is, all
      except p:choose and p:try) get an un-named default output iff their
      last contained step has an unbound default output.

Then the second example pipeline from the spec would look like this:

<p:pipeline xmlns:p="http://www.w3.org/2007/03/xproc">

  <p:documentation xmlns="http://www.w3.org/1999/xhtml">
    <div>
      <p>This is documentation</p>
    </div>
  </p:documentation>

  <p:choose name="vcheck">
    <p:when test="/*[@version &lt; 2.0]">
      <p:validate-xml-schema name="val1">
        <p:input port="schema">
          <p:document href="v1schema.xsd"/>
        </p:input>
      </p:validate-xml-schema>
    </p:when>

    <p:otherwise>
      <p:validate-xml-schema name="val2">
        <p:input port="schema">
          <p:document href="v2schema.xsd"/>
        </p:input>
      </p:validate-xml-schema>
    </p:otherwise>
  </p:choose>

  <p:xslt name="xform">
    <p:input port="stylesheet">
      <p:document href="stylesheet.xsl"/>
    </p:input>
  </p:xslt>
</p:pipeline>

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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Received on Thursday, 28 June 2007 14:43:41 GMT

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