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FunctX XQuery Functions

functx:node-kind

The XML node kind (element, attribute, text, etc.)

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Description

The functx:node-kind function returns the node kind of a node (or sequence of nodes), one of the values "element", "attribute", "text", "comment", "processing-instruction", or "document-node" for each node supplied. If $nodes is the empty sequence, it returns the empty sequence.

Arguments and Return Type

NameTypeDescription
$nodes node()* the node(s) whose kind you want to determine
return value xs:string*

XQuery Function Declaration

See XSLT definition.
declare namespace functx = "http://www.functx.com";
declare function functx:node-kind
  ( $nodes as node()* )  as xs:string* {

 for $node in $nodes
 return
 if ($node instance of element()) then 'element'
 else if ($node instance of attribute()) then 'attribute'
 else if ($node instance of text()) then 'text'
 else if ($node instance of document-node()) then 'document-node'
 else if ($node instance of comment()) then 'comment'
 else if ($node instance of processing-instruction())
         then 'processing-instruction'
 else 'unknown'
 } ;

Examples

let $in-xml :=
<in-xml>
   <!-- this is in-xml -->
   <?test see?>
   <a z="2">xyz</a>
 </in-xml>
return
XQuery ExampleResults
functx:node-kind($in-xml/a)
element
functx:node-kind($in-xml/a/@z)
attribute
functx:node-kind($in-xml/comment())
comment
functx:node-kind(
   $in-xml/processing-instruction())
processing-instruction
functx:node-kind($in-xml/a/text())
text
functx:node-kind(
 doc('http://www.datypic.com/functx./input/order.xml'))
document-node

See Also

functx:atomic-typeThe built-in type of an atomic value

History

Published OnLast UpdatedContributor(s)
2006-06-272007-02-26Priscilla Walmsley, Datypic, pwalmsley@datypic.com, http://www.datypic.com
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