not operator : boolean operator « XSLT stylesheet « XML

not operator



File: Data.xml

<sample>
    <line lid="u1">hello</line>
    <line color="red" lid="u2">hello</line>
    <line color="blue" lid="u3">hello</line>
    <line lid="u4">hello there</line>
    <line color="blue" lid="u5">hello there</line>
    <line color="blue" lid="u6">hello</line>
</sample>

File: Transform.xslt

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0">
  <xsl:output method="xml" omit-xml-declaration="yes" />

  <xsl:template match="line">
    <xsl:if test="not(. = preceding::line)">
      <xsl:copy>
        <xsl:apply-templates select="@*|node()" />
      </xsl:copy>
    </xsl:if>
  </xsl:template>

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

</xsl:stylesheet>

Output:

<sample>
    <line lid="u1">hello</line>
    
    
    <line lid="u4">hello there</line>
    
    
</sample>

Related examples in the same category

true() function