I am not sure how to go about it. Should I use a Key to index
all the indexterms from all the XML files?
xsl:key always works within a single document, but xsl:for-each-group works
on any sequence, including a sequence containing nodes from multiple
documents. So stick with for-each-group.
Here is my XSLT so far with the added Document function. All
it does is loop through each XML but doesn't group all the
indexterms into one:
<xsl:for-each select="$XML1">
<xsl:for-each select="manual">
<xsl:for-each select="title">
<xsl:variable name="thetitle" select="."/>
<xsl:for-each-group
select="document($thetitle)//indexterm"
group-by="substring(@name,1,1)">
Not sure of the details here, haven't got time to look into it: but you need
to move the for-each-group to the outer level, so it's processing a sequence
containing nodes from multiple documents. Something like
for-each-group select="$XML1/manual/title/document(.)//indexterm"
Michael Kay
http://www.saxonica.com/
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