CODEWITHSUNDEEP
xslt
end-user
end-user

Reputation: 2947

how can I use xsl to ignore duplicates

Ok, I know this has been covered a couple of times, but previous answers don't seem to give the result I'm looking for. It could be that xslt is not processing as linearly as I expect it to, but I don't know how to address it if it's not.

Let's say I have an xml file:

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <section>A</section>
  <divider/>
  <divider/>
  <section>B</section>
  <divider/>
  <section>C</section>
  <divider/>
  <divider/>
  <section>D</section>
  <divider/>
</root>

As you can see, there are occasionally duplicate elements. With an xslt:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="2.0">
  <xsl:strip-space elements="*" />
  <xsl:template match="/root">
    <xsl:apply-templates/>
  </xsl:template>

  <xsl:template match="section">
    <xsl:value-of select="text()"/>
  </xsl:template>

  <xsl:template match="divider">
    <xsl:if test="not(preceding-sibling::divider)">
      <xsl:text>--</xsl:text>
    </xsl:if>
  </xsl:template>
</xsl:stylesheet>

I was expecting to see

A
--
B
--
C
--
D
--

... but that's not what's happening. Can anyone tell me what I'm missing?

What I'm getting right now is:

A
--
B
C
D

Upvotes: 0

Views: 77

Answers (1)

Martin Honnen
Martin Honnen

Reputation: 167471

preceding-sibling::divider selects any preceding sibling divider element. If you want to check that the immediate preceding sibling is not a divider then use not(preceding-sibling::*[1][self::divider]).

Upvotes: 1

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