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Re: [xsl] Template for node-set parents


Subject: Re: [xsl] Template for node-set parents
From: Darren Oh <darren@xxxxxxx>
Date: Thu, 1 Nov 2012 17:14:51 -0400

Thanks for the suggestion. I got stuck when trying to produce a sorted
node-set. Instead of a node-set, I got a result tree fragment, for which no
node-set operations are possible. Here is a simplified example to illustrate
the problem. Whereas it is possible to select a node from $result, it is not
possible to select a node from $sorted. Any ideas?

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
  <xsl:output method="xml"/>
  <xsl:template match="*">
    <xsl:copy>
      <xsl:apply-templates/>
    </xsl:copy>
  </xsl:template>
  <xsl:variable name="result" select="/response/data/result"/>
  <xsl:variable name="sorted">
    <xsl:apply-templates select="/response/data/result">
      <xsl:sort select="COMPANY_SORT" data-type="text" order="descending"/>
    </xsl:apply-templates>
  </xsl:variable>
  <xsl:template match="/">
    <xsl:copy-of select="$result[1]"/>
    <xsl:copy-of select="$sorted[1]"/>
  </xsl:template>
</xsl:stylesheet>

On Oct 19, 2012, at 1:27 PM, Michael Kay wrote:

> Try:
>
> 1. define a global variable $v1 that selects the result of the path
expression in document order.
>
> 2. define another global variable $v2 that selects the sorted result of the
path expression
>
> 3. Use a base template rule that's the identity copy
>
> 4. Add a template rule that matches nodes in $v1 (match="node()[. intersect
$v1]). In this rule, determine the index position of this node in $v1 (count
($v1[. << $this]) + 1), and output the corresponding node from $v2 (copy-of
select="$v2[$n]").
>
> Michael Kay
> Saxonica
>
>
> On 19/10/2012 18:03, Darren Oh wrote:
>> I am trying to generate a stylesheet that copies an XML source document.
The only change should be that nodes selected by an XPath expression are
sorted. I want this to work for any XML source document. The only information
available to generate the stylesheet is the XPath expression and the sort
criteria. I think this requires creating a template for the parents of the
nodes selected by the XPath expression. How can I do this?


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