[xsl] xsl:key and grouping

Subject: [xsl] xsl:key and grouping
From: Roger.Menday@xxxxxxxxxxxxxx
Date: Tue, 27 Feb 2001 11:08:33 -0000

I am both new to XSL and new to this list ...

I would like to use XSL to group common elements from an XML source, in the
transformed output.
So far I have used some code found in the archives of this list. 
Anyway, the example I am using to explore this stuff is as follows : 

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version =
"1.0" > 
  <xsl:key name="carkey" match="item" use="car" /> 
  <xsl:template match = "favouritecars" >    
   <xsl:apply-templates select="item[ count(. | key('carkey', car)[1])=1 ]"
    <xsl:sort select="car"/>
  <xsl:template match="/favouritecars/item">
   <h4><xsl:value-of select="car"/></h4> 
   <xsl:for-each select="key('carkey', car)">
    <xsl:sort select="name"/>
    <xsl:apply-templates select="name"/> 
   </xsl:for-each> <br/><br/>
  <xsl:template match="/favouritecars/item/name">
   <xsl:value-of select="."/><br/>

<?xml version="1.0" encoding="ISO-8859-1"?> 

I wish to order the information via car, rather than person. This all works
fine until I give a particular person 
more than one favourite car element, which either the xsl:key doesn't pick
up, or that I don't use when accessing the key. 
i.e. in the example above the transformed xml fails to pick up the all the

Well, something definately is not quite right. 

 ... my failure to correct it, I guess displays my lack of deep
understanding of the
language - something I would like to acquire, as i rather like the ideas and
the language.

Anyway, can someone give me some pointers for the right way to continue ?


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