fn:in-scope-prefixes
The prefixes that are in scope for an element
Description
The fn:in-scope-prefixes function returns a sequence of prefixes (as strings) that are used in the in-scope namespaces for the $element element. The results include a zero-length string if there is a default namespace declaration. It also always includes the xml prefix, which is built into the XML recommendation.
Note that the function uses in-scope namespaces, as opposed to statically known namespaces. For example, it does not necessarily include all the prefixes declared in the prolog, if they are not used by $element or one of its ancestors. .
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 |
|---|---|
$element |
element() |
| return value | xs:string* |
Examples
let $in-xml := | <in-xml xmlns="http://datypic.com/prod"
xmlns:prod2="http://datypic.com/prod2">
xyz</in-xml> |
return |
| XQuery Example | Results |
|---|---|
in-scope-prefixes($in-xml) |
('', 'prod2', 'xml') |
See Also
| functx:namespaces-in-use | A list of namespaces used in element/attribute names in an XML fragment |
| 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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