Re: [xsl] How to find distinct nodes by value?

["Mukul Gandhi" <gandhi.mukul@xxxxxxxxx>]

You can use XSLT 2.0 distinct-values function.

The sample stylesheet is below:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

<xsl:output method="xml" indent="yes" />

<xsl:template match="/">
 <output>
   <xsl:for-each select="distinct-values(//myElement)">
     <myElement><xsl:value-of select="." /></myElement>
   </xsl:for-each>
 </output>
</xsl:template>

</xsl:stylesheet>

On 10/11/06, Victor Toni <xsl-list@xxxxxxxxx> wrote:
> I would like to retrieve only the distinct nodes (by value) from a
> "//myElement"-like  expression; <myElement> is either empty or contains
> only text.
>
> From this document
>
> <a>
>    <myElement>aaa</myElement>
>    <b>
>       <myElement>aaa</myElement>
>       <myElement>xyz</myElement>
>       <myElement>efg</myElement>
>    </b>
>    <c>
>       <d>
>           <myElement>khl</myElement>
>           <myElement>xyz</myElement>
>       </d>
>    </c>
> </a>
>
> the result should be (the order doesn't matter)
>
> <myElement>aaa</myElement>
> <myElement>xyz</myElement>
> <myElement>efg</myElement>
> <myElement>khl</myElement>
>
> In early XPath "Working Draft"s there seems to have been a function
> called "distinct-nodes()" which should have done something similar but
> it used the identity of the nodes.
> This document still shows the function
> http://www.w3.org/TR/2003/WD-xpath-functions-20030502/#func-distinct-nodes
> and it was removed in
> http://www.w3.org/TR/2003/WD-xpath-functions-20031112/
>
> A replacement for this function found in
> http://www.w3.org/TR/2005/WD-xpath-functions-20050404/#func-distinct-nodes-stable
>
> basically tells that
>
> //myElement[empty(subsequence(//myElement, 1, position()-1) intersect .)]
>
> should work to select distinct nodes (by identity).
>
> But I haven't been able to find a solution for distinct nodes by value.
>
> Any suggestions?


--
Regards,
Mukul Gandhi