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Language XQuery
(Version using iterative FLOWR)
| Date: | 12/28/05 |
| Author: | David Sewell |
| URL: | n/a |
| Comments: | 0 |
| Info: | http://www.w3.org/TR/xquery/ |
| Score: |  (2.90 in 10 votes) |
(: XQuery version of 99 Bottles of Beer on the Wall
Based on 3 November 2005 Candidate Recommendation syntax;
see http://www.w3.org/TR/2005/CR-xquery-20051103/
Coded by David Sewell, dsewell@virginia.edu - 2005-12-27
This version iterates over fn:reverse(0 to 99) rather than
using a recursive function (an equally XQuery-ish approach).
:)
declare namespace my = "http://www.99-bottles-of-beer.net/xquery";
declare function my:plural($bottles as xs:integer?) as xs:string
{ if ($bottles eq 1) then "" else "s" };
<song>{
for $b in reverse(0 to 99)
let $howmanyBegin := if ($b > 0) then string($b)
else "No more"
let $howmanyEnd := if ($b > 1) then string($b - 1)
else if ($b eq 1) then "No more"
else "99"
let $pronoun := if ($b eq 1) then "it"
else "one"
let $action := if ($b > 0) then concat("Take ", $pronoun, " down and pass it around,")
else "Let's go to the store and buy some more,"
return
<verse>
<line>{$howmanyBegin} bottle{my:plural($b)} of beer on the wall,</line>
<line>{$howmanyBegin} bottle{my:plural($b)} of beer!</line>
<line>{$action}</line>
<line>{$howmanyEnd} bottle{my:plural($b - 1)} of beer on the wall!</line>
</verse>
}</song>
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