fn:namespace-uri-from-QName - XPath XQuery Reference

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XPath/XQuery namespace-uri-from-QName function

Summary

Returns the namespace URI part of the supplied QName.

Signature

fn:namespace-uri-from-QName(

$arg as xs:QName?

) as xs:anyURI?

Properties

This function is deterministic, context-independent, and focus-independent.

Rules

If $arg is the empty sequence the function returns the empty sequence.

Otherwise, the function returns an xs:anyURI representing the namespace URI part of $arg.

If $arg is in no namespace, the function returns the zero-length xs:anyURI.

The expression fn:namespace-uri-from-QName(fn:QName("http://www.example.com/example", "person")) returns xs:anyURI("http://www.example.com/example").