Re: Populating keys with values from other documents

I am trying to look up a value in an XML document (people.xml) based
on a @ref attribute in my primary document (source.xml).  I know that
the @ref values in source.xml will match the @xml:id values in
people.xml.

<xsl:template match="name">
         <xsl:variable name="uriRef">
             <xsl:value-of select="(ancestor::*[@xml:id]/@xml:id)[last()]"/>
         </xsl:variable>

         <xsl:variable name="person"
             select="document('file:///people.xml')//person[@xml:id=concat($var,
'')]"/>

in xslt2 you can write that as
  <xsl:variable name="person"
              select="key('p',$var,document('file:///people.xml'))"/>

 <xsl:variable name="person"
              select="key('p',$var)"/>
...

         <xsl:if test="$person/residence/country">
         <span about="ont:place#{$uriRef}" property="foaf:based_near">
             <xsl:value-of select="$person/residence/country"/>
         </span>
         </xsl:if>
</xsl:template>

But this is incredibly slow for large documents.  I have experimented
with using xsl:key, but I haven't had much.  Essentially I would like
to pre-populate the key with the values from people.xml, but I can't
quite figure out how to do that in a way that doesn't get me into a
looping scenario and/or that allows me to pass my $uriRef value to the
template that processes the key.  Can anyone explain a better
approach?

Thanks, Andy

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