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(:**************************************************************:)
(: Test: functx-functx-min-non-empty-string-1 :)
(: Written by: Priscilla Walmsley (Frans Englich is maintainer) :)
(: Date: 2008-05-16+02:00 :)
(:**************************************************************:)
declare namespace functx = "http://www.example.com/";
(:~
: The minimum of a sequence of strings, ignoring "empty" values
:
: @author Priscilla Walmsley, Datypic
: @version 1.0
: @see http://www.xqueryfunctions.com/xq/functx_min-non-empty-string.html
: @param $strings the sequence of strings to search
:)
declare function functx:min-non-empty-string
( $strings as xs:string* ) as xs:string? {
min($strings[. != ''])
} ;
let $in-xml := <authors>
<author>
<fName/>
<lName>Smith</lName>
</author>
<author>
<fName>Kate</fName>
<lName>Jones</lName>
</author>
<author>
<fName>John</fName>
<lName>Doe</lName>
</author>
</authors>
return (functx:min-non-empty-string( $in-xml//fName ))
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