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(:
The following samples have been compiled from examples from the XQuery language specification.
The following notice is to comply with the W3C Software and Document Notice and License:
This software or document includes material copied from or derived from "XML Path Language (XPath)
3.1" https://www.w3.org/TR/xpath-31/.
Copyright © 2017 W3C® (MIT, ERCIM, Keio, Beihang).
(:
W3C Software and Document Notice and License
This work is being provided by the copyright holders under the following
license.
License
By obtaining and/or copying this work, you (the licensee) agree that you have
read, understood, and will comply with the following terms and conditions.
Permission to copy, modify, and distribute this work, with or without
modification, for any purpose and without fee or royalty is hereby granted,
provided that you include the following on ALL copies of the work or portions
thereof, including modifications:
1. The full text of this NOTICE in a location viewable to users of the
redistributed or derivative work.
2. Any pre-existing intellectual property disclaimers, notices, or terms and
conditions. If none exist, the W3C Software and Document Short Notice
should be included.
3. Notice of any changes or modifications, through a copyright statement on
the new code or document such as "This software or document includes
material copied from or derived from [title and URI of the W3C document].
Copyright © [YEAR] W3C® (MIT, ERCIM, Keio, Beihang)."
Disclaimers
THIS WORK IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE
SOFTWARE OR DOCUMENT WILL NOT INFRINGE ANY THIRD PARTY PATENTS, COPYRIGHTS,
TRADEMARKS OR OTHER RIGHTS.
COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENT.
The name and trademarks of copyright holders may NOT be used in advertising or
publicity pertaining to the work without specific, written prior permission.
Title to copyright in this work will at all times remain with copyright holders.
:)
:)
(: XPATH 2.0 :)
(: 1. Arithmetic :)
($x div $y) + xs:decimal($z) |
(1 to 100)[. mod 5 eq 0] |
xs:decimal($floatvalue * 0.2E-5)
(: 2. Sequences :)
(10, (1, 2), (), (3, 4))
(1, 2) = (2, 3) and (2, 3) = (3, 4) and (1, 2) = (3, 4) and (1, 2) != (2, 3) |
(salary, bonus) |
($price, $price) |
(: 3. Path selection :)
child::chapter[2] |
descendant::toy[attribute::color = "red"] |
child::employee[secretary][assistant] |
/books/book[isbn="1558604820"] is /books/book[call="QA76.9 C3845"] |
(: 4. Functions :)
fn:error(xs:QName("app:err057"), "Unexpected value", fn:string($v)) |
(: 5. Control flow :)
if ($x castable as hatsize)
then $x cast as hatsize
else if ($x castable as IQ)
then $x cast as IQ
else $x cast as xs:string |
$N[if (@x castable as xs:date)
then xs:date(@x) gt xs:date("2000-01-01")
else false()] |
(: 6. Looping :)
for $a in fn:distinct-values(book/author) return (book/author[. = $a][1], book[author = $a]/title) |
every $part in /parts/part satisfies $part/@discounted |
some $emp in /emps/employee satisfies ($emp/bonus > 0.25 * $emp/salary) |
(: 7. Type casts :)
$myaddress treat as element(*, USAddress) |
(fn:root(self::node()) treat as document-node())/
(: XPATH 3.0 :)
(: 8. Functions and let :)
let $f := function ($seq, $delim) { fn:fold-left($seq, "", fn:concat(?, $delim, ?)) },
$paf := $f(?, ".")
return $paf(1 to 5) |
collection()/(let $a := . return function() { $a }) |
let $x := doc('a.xml')/*, $y := $x//*
return $y[@value gt $x/@min] |
(: XPATH 3.1 :)
(: 9. Maps :)
let $m := map {
"Monday" : true(),
"Wednesday" : true(),
"Friday" : true(),
"Saturday" : false(),
"Sunday" : false()
},
$days := ("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")
return fn:filter($days, $m) |
(: 10. Arrays :)
let a := array { "licorice", "ginger" }(1),
b := [ 1, 2, 5, 7 ](4)
return a |
(: 11. Arrow operator :)
$string => upper-case() => normalize-unicode() => tokenize("\s+") |
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