Re: Minutes for XProc WG telcon of 6 Apr 2006

/ Rui Lopes <rlopes@di.fc.ul.pt> was heard to say:
| Well, if we want consistency between steps and pipelines, I believe we should
| allow the definition of simple parameters (i.e. booleans, integers, etc.) in a
| pipeline, the same way it has been talked regarding steps parameters. Having
| this helps on defining a standardized sub-pipeline processing component.

I'm not sure about booleans and integers. I think I'd like to keep
types out of it and just let parameters all be strings.

I was thinking we could perhaps harmonize the two by saying that the
pipeline parameters become variable bindings in the static context for
XPath evaluation of p:if component expressions. Then we could say that
a p:if component without any test document evaluates its expression
against an empty document node.

<p:pipeline>
  <p:parameter name="debug" select="1"/>
  <p:input name="doc"/>
  <p:input name="style"/>

  <p:xslt>
    <p:input name="stylesheet" label="style"/>
    <p:input name="document" label="doc"/>
    <p:output name="result"/>
  </p:xslt>

  <p:tee>
    <p:input label="result"/>
    <p:output name="styledresult"/>
    <p:output name="testdoc"/>
  </p:tee>

  <p:if test-document="testdoc" xpath="/fo:root">
    <p:input name="doc" label="styledesult"/>
    <p:then>
      <p:if xpath="$debug != 0">
        <p:then>
          <p:message>FO output</p:message>
        </p:then>
      </p:if>
      <p:save href="someURI.fo">
        <p:input name="document" label="doc"/>
      </p:save>
    </p:then>
    <p:else>
      <p:if xpath="$debug != 0">
        <p:then>
          <p:message>Non-FO output</p:message>
        </p:then>
      </p:if>
      <p:save href="someURI.html">
        <p:input name="document" label="doc"/>
      </p:save>
    </p:else>
  </p:if>
</p:pipeline>

                                        Be seeing you,
                                          norm

-- 
Norman.Walsh@Sun.COM / XML Standards Architect / Sun Microsystems, Inc.
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