Subject: Re: [xsl] Grouping and Numbering From: David Carlisle <davidc@xxxxxxxxx> Date: Fri, 25 May 2007 21:17:25 +0100 |
> I find this problem rather difficult to solve with pure XSLT 1.0. This > is due to the fact, that XSLT doesn't allow to maintain variable > state It's easy to do it in xslt1 using two stylesheets or 1 stylesheet and the xx:nde-set() extension: first do the grouping and then do a second pass that adds the numbering (for which you can just use position() or xsl:number/> once the complication of sorting has beenresolved. It is presumably possible to do it in one xslt1 stylesheet without extensions but I suspect you'd have to be quite inefficient repeatedly calculating the sort order, and apart from mozilla pretty much all xslt1 engines have a node-set extension. oh what the heck I suppose I'd better do an xslt1 version, with no extensions... <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:key name="g" match="group_id" use="." /> <xsl:output indent="yes"/> <xsl:variable name="g" select="/sample/result/details/group_id[generate-id()=generate-id(key('g',.))]"/> <xsl:template match="sample"> <xsl:for-each select="$g"> <xsl:sort select="."/> <xsl:variable name="p" select="position()-1"/> <xsl:variable name="c" select="count(key('g',$g[.<current()]))"/> <xsl:for-each select="key('g',.)"> <output row="{$c+$p+position()}"><xsl:value-of select="."/></output> </xsl:for-each> <xsl:if test="position()!=last()"> <output row="{$c+count(key('g',.))+$p+1}"/> </xsl:if> </xsl:for-each> </xsl:template> </xsl:stylesheet> saxon sg.xml sg.xsl <?xml version="1.0" encoding="utf-8"?> <output row="1">250</output> <output row="2">250</output> <output row="3"/> <output row="4">300</output> David ________________________________________________________________________ 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. ________________________________________________________________________
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