namespace-uri-for-prefix function
The fn:namespace-uri-for-prefix function returns the namespace URI that is associated with a prefix in the in-scope namespaces for an element.
Syntax
- prefix
- The prefix for which the namespace is returned.
prefix has the xs:string data type, which can have zero length, or is an empty sequence.
- element
- An element that has an in-scope namespace that is bound to prefix.
Returned value
The returned value depends
on the value of prefix:
- If element has an in-scope namespace whose prefix value matches the value of prefix, the namespace URI for that namespace is returned.
- If element does not have an in-scope namespace whose prefix value matches the value of prefix, the empty sequence is returned.
- If prefix is a string of length 0 or is an empty sequence, the namespace URI for the default namespace is returned.
Example
The following query returns the
value "http://www.mycompany.com":
declare namespace d="http://www.mycompany.com";
let $department := document {
<comp:dept xmlns:comp="http://www.mycompany.com" id="A07">
<comp:emp id="31201" />
</comp:dept> }
return fn:namespace-uri-for-prefix("comp", $department/d:dept/d:emp)