get current node with current() function : current « XPath « XML Tutorial

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XML Tutorial » XPath » current 
4. 3. 4. get current node with current() function
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<RESPONSE>
  <PRODUCT>
    <ID>ABC</ID>
    <NAME>SQL server</NAME>
  </PRODUCT>
  <PRODUCT>
    <ID>DEF</ID>
    <NAME>Black cat</NAME>
  </PRODUCT>
  <PRODUCT>
    <ID>API</ID>
    <NAME>Swing</NAME>
  </PRODUCT>
  <PRODUCT>
    <ID>JKL</ID>
    <NAME>Oracle</NAME>
  </PRODUCT>
  <SELECTEDPRODUCT>ABC</SELECTEDPRODUCT>
  <SELECTEDPRODUCT>API</SELECTEDPRODUCT>
</RESPONSE>

File: Transform.xslt

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
      version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:template match="/">
      <xsl:for-each select="//SELECTEDPRODUCT">
        <Paragraph>
          <xsl:text>NAME: </xsl:text>
          <xsl:value-of select="//PRODUCT/NAME[../ID=current()]"/>
        </Paragraph>
      </xsl:for-each>
    </xsl:template>

</xsl:stylesheet>

Output:

<?xml version="1.0" encoding="UTF-8"?><Paragraph>NAME: SQL server</Paragraph><Paragraph>NAME: Swing</Paragraph>
4. 3. current
4. 3. 1. current name
4. 3. 2. Sort by current value
4. 3. 3. current() returns a node-set that has the current node as its only member
4. 3. 4. get current node with current() function
4. 3. 5. current() and name()
4. 3. 6. Referring to the Current Node
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