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Re: Filtering on Unique ID

From: "Oleg Tkachenko [MVP]" <oleg@--!----!---------------.--->
To: NULL
Date: 6/7/2004 9:57:00 AM

Jeroen Hoekemeijer wrote:


> I need to convert this to the following
> <person>
> <childeren>
> <child id="1"/>
> <child id="2"/>
> </childeren>
> </person>
> 
> As you can see I want to filter on ID and discard any doubles.
> Has anybody have an idea to solve this without using JavaScript within the
> XSL?

There is a classical Muenchian grouping solution:

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:key name="childKey" match="childeren/child" use="id"/>
     <xsl:template match="xmlrootnode">
     	<person>
     		<childeren>
     			<xsl:apply-templates 
select="person/childeren/child[generate-id()=generate-id(key('childKey', 
id)[1])]"/>
     		</childeren>
     	</person>
     </xsl:template>
     <xsl:template match="child">
     	<child id="{id}"/>
     </xsl:template>
</xsl:stylesheet>

-- 
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

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