Compare variable : Variable « XSLT stylesheet « XML

1. XML
2. XSLT stylesheet
3. Variable

Compare variable

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:variable name="contents" select="." />
    <xsl:variable name="colorVal" select="@color" />
    <xsl:if test="not(preceding::line[(. = $contents) and (@color = $colorVal)])">
      <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 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>
    
</sample>

 

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