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Example of <xsl:fallback> 

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The fallback.xsl style sheet provides alternate processing for an XML document. The fallback.xsl style sheet attempts to process the XML document with a hypothetical <xsl:import-table> element. Because this element is not supported in the current version of the parser, the document is alternately processed with the script inside the fallback element.

XML File (records.xml)

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="fallback.xsl"?>
<records>
    <record>
        <name>Adam Barr</name>
        <address>222 Cherry</address>
        <phone>555-797-2355</phone>
    </record>
    <record>
        <name>Jeff Adell</name>
        <address>730 Elm</address>
        <phone>555-797-5555</phone>
    </record>
</records>

XSLT File (fallback.xsl)

<?xml version="1.0"?>
<xsl:stylesheet version="1.1"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >

  <xsl:template match="/">
     <HTML>
     <HEAD><TITLE>Output Table</TITLE></HEAD>
     <BODY>
     <xsl:import-table href="blah.html" name="sample">
        <xsl:fallback>
        <p>
            This version of the parser does not support the creation of a
            table with the 'xsl:import-table' element, so the following 
            table has been generated using the 'fallback' element.
        </p>
          <table border='2'>
            <xsl:for-each select='records/record'>
              <tr>
                <td><xsl:value-of select='name'/></td>
                <td><xsl:value-of select='address'/></td>
                <td><xsl:value-of select='phone'/></td>
              </tr>
            </xsl:for-each>
          </table>

        </xsl:fallback>
      </xsl:import-table>
      </BODY>
    </HTML> 
  </xsl:template>

</xsl:stylesheet>

Output

In this scenario, the current version of the parser does not support the creation of a table with the <xsl:import-table> element, so the following table is generated using the <xsl:fallback> element:

Adam Barr

222 Cherry

555-797-2355

Jeff Adell

730 Elm

555-797-5555

See Also

Reference

system-property Function
element-available Function
function-available Function