Re: [xsl] access to preceding-sibling in a sorted list

Subject: Re: [xsl] access to preceding-sibling in a sorted list
From: David Carlisle <davidc@xxxxxxxxx>
Date: Tue, 4 Sep 2007 13:38:12 +0100
this is easier in xslt2 (where xsl-for-each-group does what you want) in
xslt1 there are essentially two approaches.

1 (the "pipeline" approach) first sort the items, not adding the id
attributes, but do it into a variable
  <xsl:variable name="first-pass">
    the code to generate a list of <li> elements

then use the xx:node-set() extension function taht most XSLT1 engines
have to allow you to proxcess this, the sorted items now are siblins so
you can do

  <xsl:for-each select="xx:node-set($first-pass)/li">
      <xsl:if test="...."><xsl:attribute name="id".....

2 (the grouping approach)
View it as a grouping problem, and use one of the XSLt 1 grouping idioms
(google for muenchian grouping) for example You want to group on first
letter, sort the groups, sort each item in each group and add an
attribute on teh first

<xsl:key name="l" match="card" use="substring(full-name,1,1)"/>

 <xsl:sort select="full-name"/>
<xsl:variable name="letter" slect="key('l',substring(full-name,1,1)))"/>
<xsl:for-each select="key('l',$letter)">
<xsl:sort select="full-name"/>
<xsl:if test="position()=1"><xsl:attribute name="id"><xsl:value-of
<xsl:value-of select="full-name"/>



The Numerical Algorithms Group Ltd is a company registered in England
and Wales with company number 1249803. The registered office is:
Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom.

This e-mail has been scanned for all viruses by Star. The service is
powered by MessageLabs. 

Current Thread