preceding-sibling and following-sibling : preceding sibling « XSLT stylesheet « XML

1. XML
2. XSLT stylesheet
3. preceding sibling

preceding-sibling and following-sibling

File: Data.xml

<story>

  <chapter>
    <title>Chapter 1</title>
    <para>para 1</para>
  </chapter>

  <chapter>
    <title>Chapter 2</title>
    <para>item 1</para>
    <para>item 2</para>
    <sect>
      <title>Chapter 2, Section 1</title>
      <para>item 3</para>
      <para>para 2</para>
    </sect>
  </chapter>

  <chapter>
    <title>Chapter 3</title>
    <para>para A</para>
  </chapter>

</story>

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" indent="no" />
  <xsl:template match="chapter">
    <chapter>
      Previous chapter: (
      <xsl:value-of select="preceding-sibling::chapter[1]/title" />
      ) Next chapter: (
      <xsl:value-of select="following-sibling::chapter/title" />
      )
      <xsl:text>
  </xsl:text>
      <xsl:apply-templates />
    </chapter>
  </xsl:template>

  
</xsl:stylesheet>
Output:



  <chapter>
      Previous chapter: (
      
      ) Next chapter: (
      Chapter 2
      )
      
  
    Chapter 1
    para 1
  </chapter>

  <chapter>
      Previous chapter: (
      Chapter 1
      ) Next chapter: (
      Chapter 3
      )
      
  
    Chapter 2
    item 1
    item 2
    
      Chapter 2, Section 1
      item 3
      para 2
    
  </chapter>

  <chapter>
      Previous chapter: (
      Chapter 2
      ) Next chapter: (
      
      )
      
  
    Chapter 3
    para A
  </chapter>

 

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