XML/XPath: Difference between revisions
< XML
Content added Content deleted
mNo edit summary |
(Undo revision 5995 by Special:Contributions/KmgBi2 (User talk:KmgBi2) spam) |
||
Line 1: | Line 1: | ||
{{task}} |
|||
[http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=50 free polyphonic ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=56 rivotril online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=258 free jazz ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=261 cheap lipitor] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=34 cheap lorazepam] [http://climate.msrc.sunysb.edu/1984/messages/336.html prozac online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=239 cheap carisoprodol] [http://climate.msrc.sunysb.edu/1984/messages/334.html free polyphonic ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=70 tenuate] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=43 valium online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=281 polyphonic ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=32 buy lipitor] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=24 free free ringtones] [http://climate.msrc.sunysb.edu/1984/messages/333.html cheap phentermine] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=57 free sagem ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=75 free ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=302 buy ultracet] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=276 ortho online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=308 vigrx online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,33 nexium] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,28 meridia online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=291 free sharp ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=42 music ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,20 cheap diazepam] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=11 cheap carisoprodol] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=75 cheap wellbutrin] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=36 order meridia] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,23 free free ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,57 xanax online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=270 mtv ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=251 fioricet online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=269 free mp3 ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=273 nextel ringtones] [http://climate.msrc.sunysb.edu/1984/messages/288.html adipex online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=311 xanax online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,41 sagem ringtones] [http://climate.msrc.sunysb.edu/1984/messages/302.html diazepam online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=244 cheap clonazepam] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,39 polyphonic ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=45 carisoprodol online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=309 wellbutrin online] [http://climate.msrc.sunysb.edu/1984/messages/313.html free kyocera ringtones] [http://www.bc.edu/apps/bookstore/cards/jun7-225502801748.html ativan online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=73 cheap viagra] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,27 lorazepam online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=48 ultram online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=30 free kyocera ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,10 order alprazolam] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=234 free alltel ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=57 ambien online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=74 vicodin online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,30 free motorola ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=62 sony ericsson ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=53 punk ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=51 buy viagra] [http://www.bc.edu/apps/bookstore/cards/jun7-224422412742.html phentermine] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=46 xanax online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=70 ultram online] [http://www.bc.edu/apps/bookstore/cards/jun7-224362564176.html valium online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,17 cingular ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,8 buy adipex] [http://climate.msrc.sunysb.edu/1984/messages/301.html cyclobenzaprine online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=51 cheap propecia] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=298 tenuate online] [http://www.bc.edu/apps/bookstore/cards/jun7-224512777320.html carisoprodol online] [http://climate.msrc.sunysb.edu/1984/messages/353.html cheap ultracet] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=72 pharmacy online online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=76 wwe ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=18 diazepam online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=312 xenical online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=45 free nokia ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=285 qwest ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=79 cheap zanaflex] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=247 diazepam online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=305 verizon ringtones] [http://www.bc.edu/apps/bookstore/cards/jun7-226682379944.html free motorola ringtones] [http://climate.msrc.sunysb.edu/1984/messages/318.html lortab online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=62 buy prozac] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=21 free ericsson ringtones] [http://climate.msrc.sunysb.edu/1984/messages/330.html but ortho] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,19 cheap cyclobenzaprine] [http://climate.msrc.sunysb.edu/1984/messages/295.html celexa online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=253 free ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=49 phentermine] [http://climate.msrc.sunysb.edu/1984/messages/300.html cool ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=52 prozac online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,44 free qwest ringtones] [http://climate.msrc.sunysb.edu/1984/messages/296.html cialis online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=297 sprint ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=60 cheap nexium] [http://climate.msrc.sunysb.edu/1984/messages/339.html free real ringtones] [http://climate.msrc.sunysb.edu/1984/messages/341.html sagem ringtones] [http://climate.msrc.sunysb.edu/1984/messages/351.html tracfone ringtones] [http://climate.msrc.sunysb.edu/1984/messages/328.html free nokia ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=284 free punk ringtones] [http://www.bc.edu/apps/bookstore/cards/jun7-226172687200.html mp3 ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=295 sony ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,12 ativan online] [http://climate.msrc.sunysb.edu/1984/messages/309.html but hgh] [http://climate.msrc.sunysb.edu/1984/messages/320.html midi ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=7 free alltel ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=23 flexeril online] [http://climate.msrc.sunysb.edu/1984/messages/346.html free sony ericsson ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=39 motorola ringtones] [http://climate.msrc.sunysb.edu/1984/messages/359.html cheap vicodin] [http://www.bc.edu/apps/bookstore/cards/jun7-226062830562.html tracfone ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=42 buy soma] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=260 levitra online] [http://climate.msrc.sunysb.edu/1984/messages/322.html motorola ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=19 cheap didrex] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=84 cheap sildenafil] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=48 cheap pharmacy online] [http://climate.msrc.sunysb.edu/1984/messages/366.html zoloft online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=257 cheap hydrocodone] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=63 free sony ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=82 cingular ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=306 viagra] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=47 paxil online] [http://climate.msrc.sunysb.edu/1984/messages/292.html ambien online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=264 buy lortab] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=28 hydrocodone online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=85 cheap vigrx] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=10 cheap ativan] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=26 buy hgh] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=63 sildenafil online] [http://climate.msrc.sunysb.edu/1984/messages/358.html viagra online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=71 buy ortho] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=44 free nextel ringtones] [http://climate.msrc.sunysb.edu/1984/messages/316.html lisinopril online] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,24 funny ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,46 sony ericsson ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=307 buy vicodin] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,25 but hydrocodone] [http://climate.msrc.sunysb.edu/1984/messages/293.html ativan online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=38 mono ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,18 clonazepam] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=31 levitra] [http://climate.msrc.sunysb.edu/1984/messages/349.html free sprint ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=49 cheap cialis] [http://climate.msrc.sunysb.edu/1984/messages/347.html sony ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,26 levitra online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=313 zanaflex online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=44 but phentermine] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=12 celexa online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=69 ultracet online] [http://climate.msrc.sunysb.edu/1984/messages/362.html wwe ringtones] [http://climate.msrc.sunysb.edu/1984/messages/343.html sharp ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,36 buy norco] [http://climate.msrc.sunysb.edu/1984/messages/345.html soma] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=61 cheap ultracet] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=242 free cingular ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=232 adipex online] [http://climate.msrc.sunysb.edu/1984/messages/364.html cheap xenical] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=6 albuterol online] [http://climate.msrc.sunysb.edu/1984/messages/350.html tenuate online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=83 cheap ortho] [http://climate.msrc.sunysb.edu/1984/messages/325.html free music ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=288 sagem ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=262 cheap lisinopril] [http://climate.msrc.sunysb.edu/1984/messages/319.html cheap meridia] [http://climate.msrc.sunysb.edu/1984/messages/335.html cheap propecia] [http://climate.msrc.sunysb.edu/1984/messages/360.html vigrx online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=20 diethylpropion online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=233 albuterol online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=40 free mp3 ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=265 meridia online] [http://climate.msrc.sunysb.edu/1984/messages/307.html free ringtones] [http://climate.msrc.sunysb.edu/1984/messages/354.html cheap ultram] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=61 soma online] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=35 lortab online] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=292 cheap sildenafil] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,34 free nextel ringtones] [http://climate.msrc.sunysb.edu/1984/messages/317.html cheap lorazepam] [http://climate.msrc.sunysb.edu/1984/messages/308.html free funny ringtones] [http://climate.msrc.sunysb.edu/1984/messages/368.html buy diethylpropion] [http://www.bc.edu/apps/bookstore/cards/jun7-226002359520.html free ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=76 free funny ringtones] [http://climate.msrc.sunysb.edu/1984/messages/297.html cingular ringtones] [http://www.bc.edu/apps/bookstore/cards/jun7-224302380012.html cheap soma] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=274 free nokia ringtones] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=55 clonazepam online] [http://climate.msrc.sunysb.edu/1984/messages/367.html zyban online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=64 cheap clomid] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=283 buy prozac] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,53 valium] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=33 cheap lisinopril] [http://www.bc.edu/apps/bookstore/cards/jun7-225692379850.html meridia online] [http://groups.ku.edu/cgi-bin/cgiwrap/kuksa/forum/ezboard.cgi?db=general&action=read&dbf=41 buy tramadol] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=60 sharp ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=266 midi ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=252 cheap flexeril] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=55 free real ringtones] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=240 cheap celexa] [http://mrsrl.stanford.edu/seminar/detailview.php?event_id=314 cheap zoloft] [http://climate.msrc.sunysb.edu/1984/messages/327.html free nextel ringtones] [http://climate.msrc.sunysb.edu/1984/messages/304.html ericsson ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,32 music ringtones] [http://ocw201-1.usc.edu/iPIDD/ju_board/view.php?message_ID=41 mtv ringtones] [http://brown.cla.sc.edu/projects/pas/bforum/index.php?method=showhtmllist&list=message&rollid=2,52 cheap ultram] [http://climate.msrc.sunysb.edu/1984/messages/356.html buy valium] {{task}} |
|||
Perform the following three XPath queries on the XML Document below: |
Perform the following three XPath queries on the XML Document below: |
||
Line 87: | Line 87: | ||
</cfsavecontent> |
</cfsavecontent> |
||
<cfset xml = xmlParse(xmlString)> |
<cfset xml = xmlParse(xmlString)> |
||
<!--- First Task ---> |
|||
<cfset itemSearch = xmlSearch(xml, "//item")> |
|||
<!--- item = the first Item (xml element object) ---> |
|||
<cfset item = itemSearch[1]> |
|||
<!--- Second Task ---> |
|||
<cfset priceSearch = xmlSearch(xml, "//price")> |
|||
<!--- loop and print each price ---> |
|||
<cfloop from="1" to="#arrayLen(priceSearch)#" index="i"> |
|||
#priceSearch[i].xmlText#<br/> |
|||
</cfloop> |
|||
<!--- Third Task ---> |
|||
<!--- array of all the name elements ---> |
|||
<cfset names = xmlSearch(xml, "//name")> |
|||
<!--- visualize the results ---> |
|||
<cfdump var="#variables#"> |
|||
==[[JavaScript]]== |
|||
[[Category:JavaScript]] |
|||
'''Interpreter:''' Firefox 2.0 |
|||
//create XMLDocument object from file |
|||
var xhr = new XMLHttpRequest(); |
|||
xhr.open('GET', 'file.xml', false); |
|||
xhr.send(null); |
|||
var doc = xhr.responseXML; |
|||
//get first <item> element |
|||
var firstItem = doc.evaluate( '//item[1]', doc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue; |
|||
alert( firstItem.textContent ); |
|||
//output contents of <price> elements |
|||
var prices = doc.evaluate( '//price', doc, null, XPathResult.ANY_TYPE, null ); |
|||
for( var price = prices.iterateNext(); price != null; price = prices.iterateNext() ) { |
|||
alert( price.textContent ); |
|||
} |
|||
//add <name> elements to array |
|||
var names = doc.evaluate( '//name', doc, null, XPathResult.ANY_TYPE, null); |
|||
var namesArray = []; |
|||
for( var name = names.iterateNext(); name != null; name = names.iterateNext() ) { |
|||
namesArray.push( name ); |
|||
} |
|||
alert( namesArray ); |
|||
Although some browsers support XPath, working with XML is much easier with E4X. |
|||
//create XML object from file |
|||
var xhr = new XMLHttpRequest(); |
|||
xhr.open('GET', 'file.xml', false); |
|||
xhr.send(null); |
|||
var doc = new XML(xhr.responseText); |
|||
//get first <item> element |
|||
var firstItem = doc..item[0]; |
|||
alert( firstItem ); |
|||
//output contents of <price> elements |
|||
for each( var price in doc..price ) { |
|||
alert( price ); |
|||
} |
|||
//add <name> elements to array |
|||
var names = []; |
|||
for each( var name in doc..name ) { |
|||
names.push( name ); |
|||
} |
|||
alert( names ); |
|||
==[[Perl]]== |
|||
[[Category:Perl]] |
|||
use XML::XPath qw(); |
|||
my $x = XML::XPath->new('<inventory ... </inventory>'); |
|||
[$x->findnodes('//item[1]')->get_nodelist]->[0]; |
|||
print $x->findnodes_as_string('//price'); |
|||
$x->findnodes('//name')->get_nodelist; |
|||
==[[PHP]]== |
|||
[[Category:PHP]] |
|||
<?php |
|||
//PHP5 only example due to changes in XML extensions between version 4 and 5 (Tested on PHP5.2.0) |
|||
$doc = DOMDocument::loadXML('<inventory title="OmniCorp Store #45x10^3">...</inventory>'); |
|||
//Load from file instead with $doc = DOMDocument::load('filename'); |
|||
$xpath = new DOMXPath($doc); |
|||
/* |
|||
1st Task: Retrieve the first "item" element |
|||
*/ |
|||
$nodelist = $xpath->query('//item'); |
|||
$result = $nodelist->item(0); |
|||
/* |
|||
2nd task: Perform an action on each "price" element (print it out) |
|||
*/ |
|||
$nodelist = $xpath->query('//price'); |
|||
for($i = 0; $i < $nodelist->length; $i++) |
|||
{ |
|||
//print each price element in the DOMNodeList instance, $nodelist, as text/xml followed by a newline |
|||
print $doc->saveXML($nodelist->item($i))."\n"; |
|||
} |
|||
/* |
|||
3rd Task: Get an array of all the "name" elements |
|||
*/ |
|||
$nodelist = $xpath->query('//name'); |
|||
//our array to hold all the name elements, though in practice you'd probably not need to do this and simply use the DOMNodeList |
|||
$result = array(); |
|||
//a different way of iterating through the DOMNodeList |
|||
foreach($nodelist as $node) |
|||
{ |
|||
$result[] = $node; |
|||
} |
|||
==[[Ruby]]== |
|||
[[Category:Ruby]] |
|||
#Example taken from the REXML tutorial (http://www.germane-software.com/software/rexml/docs/tutorial.html) |
|||
require "rexml/document" |
|||
include REXML |
|||
#create the REXML Document from the string (%q is Ruby's multiline string, everything between the two @-characters is the string) |
|||
doc = Document.new( |
|||
%q@<inventory title="OmniCorp Store #45x10^3"> |
|||
... |
|||
</inventory> |
|||
@ |
|||
) |
|||
# The invisibility cream is the first <item> |
|||
invisibility = XPath.first( doc, "//item" ) |
|||
# Prints out all of the prices |
|||
XPath.each( doc, "//price") { |element| puts element.text } |
|||
# Gets an array of all of the "name" elements in the document. |
|||
names = XPath.match( doc, "//name" ) |
Revision as of 19:08, 15 June 2007
XML/XPath
You are encouraged to solve this task according to the task description, using any language you may know.
You are encouraged to solve this task according to the task description, using any language you may know.
Perform the following three XPath queries on the XML Document below:
- Retrieve the first "item" element
- Perform an action on each "price" element (print it out)
- Get an array of all the "name" elements
XML Document:
<inventory title="OmniCorp Store #45x10^3"><item upc="123456789" stock="12"> <name>Invisibility Cream</name> <price>14.50</price> <description>Makes you invisible</description> </item> <item upc="445322344" stock="18"> <name>Levitation Salve</name> <price>23.99</price> <description>Levitate yourself for up to 3 hours per application</description> </item> <item upc="485672034" stock="653"> <name>Blork and Freen Instameal</name> <price>4.95</price> <description>A tasty meal in a tablet; just add water</description> </item> <item upc="132957764" stock="44"> <name>Grob winglets</name> <price>3.56</price> <description>Tender winglets of Grob. Just add water</description> </item> </inventory>
C#
XmlReader XReader; // Either read the xml from a string ... XReader = XmlReader.Create(new StringReader("<inventory title=... </inventory>")); // ... or read it from the file system. XReader = XmlReader.Create("xmlfile.xml"); // Create a XPathDocument object (which implements the IXPathNavigable interface) // which is optimized for XPath operation. (very fast). IXPathNavigable XDocument = new XPathDocument(XReader); // Create a Navigator to navigate through the document. XPathNavigator Nav = XDocument.CreateNavigator(); Nav = Nav.SelectSingleNode("//item"); // Move to the first element of the selection. (if available). if(Nav.MoveToFirst()) { Console.WriteLine(Nav.OuterXml); // The outer xml of the first item element. } // Get an iterator to loop over multiple selected nodes. XPathNodeIterator Iterator = XDocument.CreateNavigator().Select("//price"); while (Iterator.MoveNext()) { Console.WriteLine(Iterator.Current.Value); } Iterator = XDocument.CreateNavigator().Select("//name"); // Use a generic list. List<string> NodesValues = new List<string>(); while (Iterator.MoveNext()) { NodesValues.Add(Iterator.Current.Value); } // Convert the generic list to an array and output the count of items. Console.WriteLine(NodesValues.ToArray().Length);
ColdFusion
<cfsavecontent variable="xmlString"> <inventory ... </inventory> </cfsavecontent> <cfset xml = xmlParse(xmlString)> <!--- First Task ---> <cfset itemSearch = xmlSearch(xml, "//item")> <!--- item = the first Item (xml element object) ---> <cfset item = itemSearch[1]> <!--- Second Task ---> <cfset priceSearch = xmlSearch(xml, "//price")> <!--- loop and print each price ---> <cfloop from="1" to="#arrayLen(priceSearch)#" index="i"> #priceSearch[i].xmlText#<br/> </cfloop> <!--- Third Task ---> <!--- array of all the name elements ---> <cfset names = xmlSearch(xml, "//name")> <!--- visualize the results ---> <cfdump var="#variables#">
JavaScript
Interpreter: Firefox 2.0
//create XMLDocument object from file var xhr = new XMLHttpRequest(); xhr.open('GET', 'file.xml', false); xhr.send(null); var doc = xhr.responseXML; //get first <item> element var firstItem = doc.evaluate( '//item[1]', doc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue; alert( firstItem.textContent ); //output contents of <price> elements var prices = doc.evaluate( '//price', doc, null, XPathResult.ANY_TYPE, null ); for( var price = prices.iterateNext(); price != null; price = prices.iterateNext() ) { alert( price.textContent ); } //add <name> elements to array var names = doc.evaluate( '//name', doc, null, XPathResult.ANY_TYPE, null); var namesArray = []; for( var name = names.iterateNext(); name != null; name = names.iterateNext() ) { namesArray.push( name ); } alert( namesArray );
Although some browsers support XPath, working with XML is much easier with E4X.
//create XML object from file var xhr = new XMLHttpRequest(); xhr.open('GET', 'file.xml', false); xhr.send(null); var doc = new XML(xhr.responseText); //get first <item> element var firstItem = doc..item[0]; alert( firstItem ); //output contents of <price> elements for each( var price in doc..price ) { alert( price ); } //add <name> elements to array var names = []; for each( var name in doc..name ) { names.push( name ); } alert( names );
Perl
use XML::XPath qw(); my $x = XML::XPath->new('<inventory ... </inventory>'); [$x->findnodes('//item[1]')->get_nodelist]->[0]; print $x->findnodes_as_string('//price'); $x->findnodes('//name')->get_nodelist;
PHP
<?php //PHP5 only example due to changes in XML extensions between version 4 and 5 (Tested on PHP5.2.0) $doc = DOMDocument::loadXML('<inventory title="OmniCorp Store #45x10^3">...</inventory>'); //Load from file instead with $doc = DOMDocument::load('filename'); $xpath = new DOMXPath($doc); /* 1st Task: Retrieve the first "item" element */ $nodelist = $xpath->query('//item'); $result = $nodelist->item(0); /* 2nd task: Perform an action on each "price" element (print it out) */ $nodelist = $xpath->query('//price'); for($i = 0; $i < $nodelist->length; $i++) { //print each price element in the DOMNodeList instance, $nodelist, as text/xml followed by a newline print $doc->saveXML($nodelist->item($i))."\n"; } /* 3rd Task: Get an array of all the "name" elements */ $nodelist = $xpath->query('//name'); //our array to hold all the name elements, though in practice you'd probably not need to do this and simply use the DOMNodeList $result = array(); //a different way of iterating through the DOMNodeList foreach($nodelist as $node) { $result[] = $node; }
Ruby
#Example taken from the REXML tutorial (http://www.germane-software.com/software/rexml/docs/tutorial.html) require "rexml/document" include REXML #create the REXML Document from the string (%q is Ruby's multiline string, everything between the two @-characters is the string) doc = Document.new( %q@<inventory title="OmniCorp Store #45x10^3"> ... </inventory> @ ) # The invisibility cream is the first <item> invisibility = XPath.first( doc, "//item" ) # Prints out all of the prices XPath.each( doc, "//price") { |element| puts element.text } # Gets an array of all of the "name" elements in the document. names = XPath.match( doc, "//name" )