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XPath expressions quick reference:

by Vahid 7. May 2009 07:00

if you work with XML and xpath for sure the reference seems to be a trivial one for you. but if you stop working with xml and xpath for a while you’ll find the reference pretty handy. i personally keep it with me always. hope it also helps you.

the reference xpath expression is for this xml content:


   1: <?xml version="1.0" encoding="utf-8" ?>


   2: <Albums>


   3:   <Album country="USA">


   4:     <title>Empire Burlesque</title>


   5:     <artist>Bob Dylan</artist>


   6:     <price>10.90</price>


   7:   </Album>


   8:   <Album country="UK">


   9:     <title>Hide your heart</title>


  10:     <artist>Bonnie Tyler</artist>


  11:     <price>10.0</price>


  12:   </Album>


  13:   <Album country="USA">


  14:     <title>Greatest Hits</title>


  15:     <artist>Dolly Parton</artist>


  16:     <price>9.90</price>


  17:   </Album>


  18: </Albums>

and here is the quick reference


/Albums	selects the root element
/Albums/Album	selects all the Album elements of the Albums element
/Albums/Album/price	selects all the price elements of all the Album elements of the Albums element
/Albums/Album[price>10.0]	selects all the Album elements with price greater than 10.0
starts with a slash(/)	represents an absolute path to an element
starts with two slashes(//)	selects all elements that satisfy the criteria
//Album	selects all Album elements in the document
/Albums/Album/title	/Albums/Album/artist
//title	//artist
/Albums/Album/*	selects all the child elements of all Album elements of the Albums element
/Albums/*/price	selects all the price elements that are grandchildren of Albums
///price	selects all price elements which have two ancestors
//*	selects all elements in the document
/Albums/Album[1]	selects the first Album child of Albums
/Albums/Album[last()]	selects the last Album child of Albums
/Albums/Album[price]	selects all the Album elements that have price
/Albums/Album[price=10.90]	selects Album elements with the price of 10.90
/Albums/Album[price=10.90]/price	selects all price elements with the price of 10.90
//@country	selects all “country” attributes
//Album[@country]	selects Album elements which have a “country” attribute
//Album[@*]	selects Album elements which have any attribute
//Album[@country=‘UK’]	selects Album elements with “country” attribute equal to ‘UK’

Technical

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XPath expressions quick reference:#

XPath expressions quick reference: