FunctX XSLT Functions

FunctX XSLT Function Library > Sequences > Positional >

functx:index-of-node

The position of a node in a sequence, based on node identity

Description

The functx:index-of-node function returns one or more integers representing the position of an XML node within a sequence of nodes. It is based entirely on node identity, not the value or content of the nodes.

Arguments and Return Type

Name	Type	Description
`$nodes`	`node()*`	the node sequence
`$nodeToFind`	`node()`	the node to find in the sequence
return value	`xs:integer*`

XSLT Function Declaration

See XQuery definition.

<xsl:function name="functx:index-of-node" as="xs:integer*"
              xmlns:functx="http://www.functx.com">
  <xsl:param name="nodes" as="node()*"/>
  <xsl:param name="nodeToFind" as="node()"/>

  <xsl:sequence select="
  for $seq in (1 to count($nodes))
  return $seq[$nodes[$seq] is $nodeToFind]
 "/>

</xsl:function>

Examples

<xsl:variable name="in-xml" as="item()*">

<authors>
   <author>
      <fName>Kate</fName>
      <lName>Jones</lName>
   </author>
   <author>
      <fName>John</fName>
      <lName>Doe</lName>
   </author>
</authors>

</xsl:variable>

XPath Example	Results
functx:index-of-node( $in-xml/author,$in-xml/author[1])	1
functx:index-of-node( $in-xml/author,$in-xml/author[2])	2
functx:index-of-node( $in-xml/author, $in-xml/author[lName='Doe'])	2

History

Published On	Last Updated	Contributor(s)
2006-06-27	2007-02-26	W3C XML Query Working Group, XQuery 1.0 and XPath 2.0 Functions and Operators, http://www.w3.org/TR/xpath-functions/(parameter names changed for clarity)

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