XML Tutorial/XPath/current

current() and name()

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
    <item cell="1"> cell 1 </item>
    <item cell="2"> cell 2 </item>
    <name cell="1"> name 1 </name>
    <name cell="2"> name 2 </name>
    <size cell="1"> size 1 </size>
    <size cell="2"> size 2 </size>
</data>
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="/data">
      <TABLE border="1">
        <xsl:apply-templates select="*[@cell="1"]"/>
      </TABLE>
    </xsl:template>
    <xsl:template match="*">
      <TR>
        <TD>
          <xsl:value-of select="."/>
        </TD>
        <TD>
          <xsl:value-of select="//*[name()=name(current()) and @cell="2"]"/>
        </TD>
      </TR>
    </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE border="1"><TR><TD> cell 1 </TD><TD> cell 2 </TD></TR><TR><TD> name 1 </TD><TD> name 2 </TD></TR><TR><TD> size 1 </TD><TD> size 2 </TD></TR></TABLE>

current name

File: Data.xml
<?xml version="1.0"?>
<root ref="rootref" name="blue">
  <glossary>
    <item ref="blue" name="rootref">rootref</item>
  </glossary>
  <glossary>
    <item ref="itemref" name="itemref">itemref</item>
  </glossary>
</root>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes" />
  <xsl:template match="/">
    <xsl:apply-templates select="root" />
  </xsl:template>
  <xsl:template match="root">
    <xsl:for-each select="//glossary/item[@name=current()/@ref]">
      <xsl:copy-of select="." />
      <xsl:for-each select=".">
        <xsl:for-each select="//glossary/item[@name=current()/@ref]">
          <xsl:copy-of select="." />
        </xsl:for-each>
      </xsl:for-each>
    </xsl:for-each>
    <xsl:for-each select="//glossary/item[@name=./@ref]">
      <xsl:copy-of select="." />
    </xsl:for-each>
    <xsl:for-each select=".">
      <xsl:copy-of select="." />
    </xsl:for-each>
  </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<item ref="blue" name="rootref">rootref</item>
<item ref="itemref" name="itemref">itemref</item>
<root ref="rootref" name="blue">
    <glossary>
        <item ref="blue" name="rootref">rootref</item>
    </glossary>
    <glossary>
        <item ref="itemref" name="itemref">itemref</item>
    </glossary>
</root>

current() returns a node-set that has the current node as its only member

File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
    <Choices name="first">
      <Choice name="first">11111</Choice>
      <Choice name="second">22222</Choice>
    </Choices>
    <Choices name="second">
      <Choice name="first">33333</Choice>
      <Choice name="second">44444</Choice>
    </Choices>
</data>
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="/">
      <TABLE border="1">
        <TR>
          <td> . </TH>
          <td>current()</TH>
        </TR>
        <xsl:apply-templates select="//Choices"/>
      </TABLE>
    </xsl:template>
    <xsl:template match="Choices">
      <TR>
        <TD>
          <xsl:value-of select="./@name"/>
        </TD>
        <TD>
          <xsl:value-of select="current()/@name"/>
        </TD>
      </TR>
      <TR>
        <TD>
          <xsl:apply-templates select="Choice[./@name="first"]"/>
        </TD>
        <TD>
          <xsl:apply-templates select="Choice[current()/@name="first"]"/>
        </TD>
      </TR>
    </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE border="1"><TR><td> . 
</TH><td>current()</TH></TR><TR><TD>first</TD><TD>first</TD></TR><TR>
<TD>11111</TD><TD>1111122222</TD></TR><TR><TD>second</TD><TD>second</TD></TR><TR><TD>33333</TD><TD/></TR></TABLE>

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>

Referring to the Current Node

File: Data.xml
 
<?xml version="1.0"?>
<employees>
  <animal>
    <name language="English">T1</name>
    <name language="Latin">T2</name>
    <projects>
      <project>project1</project>
    </projects>
  </animal>
</employees>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0">
  <xsl:template match="animal">
    <xsl:apply-templates select="name" />
  </xsl:template>
  <xsl:template match="name[@language="English"]">
    <nobr>
      <b>
        <xsl:value-of select="." />
        :
      </b>
    </nobr>
  </xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
  <nobr><b>T1
        :
      </b></nobr>T2

Sort by current value

File: Data.xml
<?xml version="1.0"?>
<numberlist>
  <number>127</number>
  <number>23</number>
  <number>10</number>
</numberlist>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text" indent="no"/>
  <xsl:strip-space elements="*"/>
  <xsl:variable name="newline">
  <xsl:text></xsl:text>
  </xsl:variable>
  <xsl:template match="/">
    <xsl:for-each select="numberlist/number">
      <xsl:sort select="."/>
      <xsl:value-of select="."/>
      <xsl:value-of select="$newline"/>
    </xsl:for-each>
  </xsl:template>
</xsl:stylesheet>
Output:
1012723