fn:namespace-uri-from-QName
The namespace part of a QName
Description
The fn:namespace-uri-from-QName function returns the namespace part of an xs:QName. If you want to retrieve the namespace of an element or attribute name, you should consider using the fn:namespace-uri function instead; you cannot pass element or attribute nodes directly to this function.
This description is © Copyright 2007, Priscilla Walmsley. It is excerpted from the book XQuery by Priscilla Walmsley, O'Reilly, 2007. For a complete explanation of this function, please refer to Appendix A of the book.
Arguments and Return Type
| Name | Type |
|---|---|
$arg |
xs:QName? |
| return value | xs:anyURI? |
Examples
| XPath Example | Results |
|---|---|
namespace-uri-from-QName(
QName ('http://datypic.com/pre', 'prefixed')) |
http://datypic.com/pre |
namespace-uri-from-QName(
QName ('', 'unprefixed')) |
zero-length xs:anyURI value |
namespace-uri-from-QName( () ) |
() |
See Also
| fn:local-name-from-QName | The local part of a QName |
| fn:resolve-QName | Resolves a QName based on the in-scope namespaces of an element |
| fn:namespace-uri | The namespace URI of a node |
| fn:namespace-uri-for-prefix | The namespace associated with a prefix, in the scope of an element |
History
| Published On | Last Updated | Contributor(s) |
|---|---|---|
| 2006-06-27 | 2007-02-26 | W3C, XQuery 1.0 and XPath 2.0 Functions and Operators, http://www.w3.org/TR/xpath-functions/ |
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