Eliminate duplicates

[jose.jeria]

I have the following xml file:

<?xml version="1.0"?>
<people>
<person>
<name>Donald Duck</name>
</person>
<person>
<name>Goofy</name>
</person>
<person>
<name>Mickey Mouse</name>
</person>
<person>
<name>Donald Duck</name>
</person>
<!-- and so on -->
</people>


I want to eliminate any duplicate in this file. So Donald Duck would
only appear once. Note that Donald Duck would appear maximum 2 times in
the xml file, not more.

Is this possible to achieve with XSLT?

 

[David Carlisle]

http://www.jenitennison.com/xslt/grouping/index.html

(duplicate elimination is a special case of grouping where you just use
teh first element of each group.)

David

 

[Mukul Gandhi]

Please try this XSL. The stylesheet uses identity template. Appropriate
person elements are eliminated.

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">

<xslutput method="xml" indent="yes" />

<xsl:template match="node() | @*">
<xsl:copy>
<xsl:apply-templates select="node() | @*" />
</xsl:copy>
</xsl:template>

<xsl:template match="person">
<xsl:if test="not(name = preceding-sibling:erson/name)">
<xsl:copy-of select="." />
</xsl:if>
</xsl:template>

</xsl:stylesheet>

Regards,
Mukul