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FunctX XQuery Functions

functx:is-absolute-uri

Whether a URI is absolute

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Description

The functx:is-absolute-uri function returns true if URI is absolute, meaning that it starts with a scheme name such as http or ftp. It returns false if it is a relative URI.

Arguments and Return Type

NameTypeDescription
$uri xs:string? the URI to test
return value xs:boolean

XQuery Function Declaration

See XSLT definition.
declare namespace functx = "http://www.functx.com";
declare function functx:is-absolute-uri
  ( $uri as xs:string? )  as xs:boolean {

   matches($uri,'^[a-z]+:')
 } ;

Examples

XQuery ExampleResults
functx:is-absolute-uri(
   'http://www.datypic.com')
true
functx:is-absolute-uri(
   'ftp://ftp.datypic.com')
true
functx:is-absolute-uri('ftp.datypic.com')
false
functx:is-absolute-uri('www.datypic.com')
false
functx:is-absolute-uri('prod.html')
false

See Also

fn:resolve-uriResolves a relative URI to a base URI, returning an absolute URI
fn:base-uriThe base URI of a node
functx:scheme-from-uriReturns the scheme from a URI

History

Published OnLast UpdatedContributor(s)
2006-06-272007-02-26Priscilla Walmsley, Datypic, pwalmsley@datypic.com, http://www.datypic.com
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