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FunctX XQuery Functions

functx:namespaces-in-use

A list of namespaces used in element/attribute names in an XML fragment

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Description

The functx:namespaces-in-use function returns a list of all the namespaces used in element and attribute names in the scope of $root. It does not include namespaces that are declared but not used, or ones that are used in names that are the content (as opposed to the names) of elements or attributes.

Arguments and Return Type

NameTypeDescription
$root node()? the root node to start from
return value xs:anyURI*

XQuery Function Declaration

See XSLT definition.
declare namespace functx = "http://www.functx.com";
declare function functx:namespaces-in-use
  ( $root as node()? )  as xs:anyURI* {

   distinct-values(
      $root/descendant-or-self::*/(.|@*)/namespace-uri(.))
 } ;

Examples

let $in-xml :=
<authors xmlns="abc" xmlns:d="def">
   <author xmlns="ghi">
      <fName xmlns:x="xyz" x:attr="123">Kate</fName>
      <lName>Jones</lName>
   </author>
</authors>
return
XQuery ExampleResultsExplanation
functx:namespaces-in-use($in-xml)
(abc, ghi, xyz)
def is not listed because it is not used in any names

See Also

fn:namespace-uri-for-prefixThe namespace associated with a prefix, in the scope of an element
fn:in-scope-prefixesThe prefixes that are in scope for an element
fn:namespace-uriThe namespace URI of a node

History

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