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Re: sorting data and removing the duplicates

Subject: Re: sorting data and removing the duplicates
From: "Mark Volkmann" <volkmann@xxxxxxxxxx>
Date: Mon, 19 Jun 2000 06:33:50 -0500
sort nodup
----- Original Message -----
From: Ronald <ronald@xxxxxxxxxxx>
To: <xsl-list@xxxxxxxxxxxxxxxx>
Sent: Monday, June 19, 2000 5:39 AM
Subject: sorting data and removing the duplicates


> Hi there,
>
> I've encountered the following:
>
> I have a huge list of variables being set ( it's a xml file)
> and with XSLt i want to sort  this file on alfabetical order
> and then remove the duplicates.
> The xml file sort of looks like this:
>
> <value><var>date1</var><date>01-01-1999</date></value>
> <value><var>date2</var><date>01-02-1999</date></value>
> <value><var>date3</var><date>01-01-1999</date></value>
> <value><var>date2</var><date>01-02-1999</date></value>
>
> I found that sorting this list was not so difficult, but removing the
> duplicates...erm...
> I dunno how to do that with XSLT.
> My current list looks like this:
>
> <value><var>date1</var><date>01-01-1999</date></value>
> <value><var>date2</var><date>01-02-1999</date></value>
> <value><var>date2</var><date>01-02-1999</date></value>
> <value><var>date3</var><date>01-01-1999</date></value>
>
> But I want something that looks like:
>
> <value><var>date1</var><date>01-01-1999</date></value>
> <value><var>date2</var><date>01-02-1999</date></value>
> <value><var>date3</var><date>01-01-1999</date></value>
>
> BTW:
> The content of the var. is enough to do a search on, F.E. date2 always
gets
> the same value.

This one should be in the archives because I asked it several months ago.
Here's the solution I was given.

<?xml version="1.0"?>

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

  <xsl:template match="/">
    <h2>Original List</h2>
    <xsl:apply-templates select="list"/>

    <h2>Sorted List w/ No Duplicates</h2>
    <xsl:apply-templates select="list" mode="sort-nodup"/>
  </xsl:template>

  <xsl:template match="list">
    <xsl:apply-templates select="item"/>
  </xsl:template>

  <xsl:template match="list" mode="sort-nodup">
    <xsl:apply-templates select="item[not(.=preceding-sibling::item)]">
      <xsl:sort/>
    </xsl:apply-templates>
  </xsl:template>

  <xsl:template match="item">
    <div>
      <xsl:value-of select="."/>
    </div>
  </xsl:template>

</xsl:stylesheet>


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list


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