It is also worth exploring the XSLT 2.0 grouping
features. Following is the XSLT 2.0 answer (which
eliminates duplicates as well).
<?xml version="1.0"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0">
<xsl:output method="xml" indent="yes" />
<xsl:template match="/root">
<root>
<xsl:for-each-group select="group"
group-by="@name">
<group name="{(_at_)name}">
<xsl:variable name="curr-group"
as="element(entry)*">
<xsl:copy-of select="current-group()/*" />
</xsl:variable>
<xsl:for-each
select="distinct-values($curr-group/@name)">
<entry name="{.}" />
</xsl:for-each>
</group>
</xsl:for-each-group>
</root>
</xsl:template>
</xsl:stylesheet>
The stylesheet is tested with Saxon 8.1..
Regards,
Mukul
--- Dave Roe <david_roe(_at_)mac(_dot_)com> wrote:
Fantastic - that certainly does the trick, thank
you.
Is there a way of extending this approach so that it
can de-duplicate
entries?
For example, if I have:
<root>
<group name="group1">
<entry name="entry1" />
<entry name="entry2" />
</group>
<group name="group1">
<entry name="entry2" />
<entry name="entry3" />
</group>
</root>
and I want to end up with:
<root>
<group name="group1">
<entry name="entry1" />
<entry name="entry2" />
<entry name="entry3" />
</group>
</root>
(with producing 2 entries for entry2).
Thanks again,
/dave
On Dec 3, 2004, at 11:29 PM, Mukul Gandhi wrote:
Hi Dave,
Please try this XSL. It uses the Muenchian
technique.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:key name="by-group-name" match="group"
use="@name" />
<xsl:template match="/root">
<root>
<xsl:for-each select="group[generate-id(.) =
generate-id(key('by-group-name', @name)[1])]">
<group name="{(_at_)name}">
<xsl:for-each select="key('by-group-name',
@name)">
<xsl:copy-of select="*"/>
</xsl:for-each>
</group>
</xsl:for-each>
</root>
</xsl:template>
</xsl:stylesheet>
Regards,
Mukul
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