Re: [xsl] Using XSLT's key() function while context in secondary document?

[Michael Ludwig <mlu@xxxxxxxxxxxxx>]

Michael Kay schrieb:
> > Is there a way to direct the key() function back to the
> > principal document while the context node is located in
> > another document?
>
> In XSLT 2.0, use the third argument of key() to tell it which document
> to search. In 1.0, you need to change context to that document, which
> you can do using xsl:for-each.
>
> Michael Kay

Thanks a lot! So the solution involving the documents given in my
original post goes like this:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
 <xsl:variable name="principal-doc" select="/"/>
 <xsl:key name="chnam" match="Chnl" use="@ID"/>
 <xsl:template match="/">
  <Urmel>
   <xsl:for-each select="document('s.xml')//Channel">
    <xsl:variable name="cur" select="."/>
    <xsl:for-each select="$principal-doc"><!-- change context -->
     <p><xsl:value-of select="key('chnam', $cur)"/> this works</p>
    </xsl:for-each>
    <p><xsl:value-of select="key('chnam', $cur)"/>this doesn't</p>
   </xsl:for-each>
  </Urmel>
 </xsl:template>
</xsl:stylesheet>

Michael Ludwig