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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Multi-level grouping using variables
 I have been having a problem with grouping. If I have: ... How can I group each grade, and within each grade, group all tutors with their students? By using variables and multi-level grouping. This allows you to easily detect groups in a subset scope of the document ... the Muenchian method works with document-wide scope. Note how the principles are similar, but I came up with the variable-based approach for a customer who needed three levels of grouping and the Muenchian method for that deep a level was getting very complex to maintain and understand. An example is below. I hope this helps. ...................... Ken p.s. in our hands-on training we teach all of axis-, variable- and key-based grouping methods for XSLT 1.0 (the Muenchian method is the key-based method) ... we've just rescheduled our Washington course to March 15-19 ... announcements will be made soon, details on our home page ... other cities are also being planned so check for a location near you.
t:\ftemp>type kakridge.xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0"><xsl:output method="text"/> <xsl:template match="/">
<xsl:for-each select="/School/Grade">
<xsl:variable name="students" select="Students/Student"/>
<xsl:for-each select="$students">
<xsl:if test="generate-id(.)=
generate-id($students[Tutor=current()/Tutor])">
Grade: <xsl:value-of select="../../Name"/>
Tutor: <xsl:value-of select="Tutor"/>
Students: <xsl:for-each select="$students[Tutor=current()/Tutor]">
<xsl:if test="position()>1">,</xsl:if>
<xsl:value-of select="Name"/>
</xsl:for-each>
<xsl:text>
</xsl:text>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:template></xsl:stylesheet> t:\ftemp>saxon kakridge.xml kakridge.xsl Grade: Kindergarten Tutor: Mary Smith Students: Bob,Ken Grade: Kindergarten Tutor: Mike Smith Students: Joe Grade: First Tutor: Mary Smith Students: Ted Grade: First Tutor: Mike Smith Students: Sammy t:\ftemp>rem Done
G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (F:-0995) ISBN 0-13-065196-6 Definitive XSLT and XPath ISBN 0-13-140374-5 Definitive XSL-FO ISBN 1-894049-08-X Practical Transformation Using XSLT and XPath ISBN 1-894049-11-X Practical Formatting Using XSL-FO Member of the XML Guild of Practitioners: http://XMLGuild.info Male Breast Cancer Awareness http://www.CraneSoftwrights.com/s/bc XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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