fn:QName
Constructs a QName from a namespace and local part
Description
The fn:QName function takes a namespace URI and a qualified (optionally prefixed) name as arguments, and constructs a QName value from them. If $paramQName is prefixed, that prefix is retained in the resulting xs:QName value. Unlike the xs:QName constructor, the fn:QName function does not require a literal argument. Therefore, the name could be the result of a dynamically evaluated expression.
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 |
|---|---|
$paramURI |
xs:string? |
$paramQName |
xs:string |
| return value | xs:QName |
Examples
| XPath Example | Results |
|---|---|
QName('http://datypic.com/prod','product') |
A QName whose namespace is http://datypic.com/prod, whose prefix is empty, and whose local part is product |
QName('http://datypic.com/prod',
'pre:product') |
A QName whose namespace is http://datypic.com/prod, whose prefix is pre, and whose local part is product |
QName('', 'product') |
A QName whose namespace is empty, whose prefix is empty, and whose local part is product |
QName('', 'pre:product') |
Error FOCA0002 |
See Also
| fn:resolve-QName | Resolves a QName based on the in-scope namespaces of an element |
| fn:local-name-from-QName | The local part of a QName |
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/ |
Recommended Reading:
