###A demo app for XQuery/XPath###
####Sample XPath:####
- / selects the root element
- /catalog selects the elements under /catalog
- /catalog/cd selects all the 'cd' elements of the catalog element
- /catalog/cd/price selects all the price elements of all the cd elements of the catalog element
- /catalog/cd[price>10.0] selects all the cd 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
- //cd selects all cd elements in the document
- /catalog/cd/title | /catalog/cd/artist selects all the title and artist elements of the cd elements of catalog
- //title | //artist selects all the title and artist elements in the document
- /catalog/cd/* selects all the child elements of all cd elements of the catalog element
- /catalog/*/price selects all the price elements that are grandchildren of catalog
- ///price selects all price elements which have two ancestors
- //* selects all elements in the document
- /catalog/cd[1] selects the first cd child of catalog
- /catalog/cd[last()] selects the last cd child of catalog
- /catalog/cd[price] selects all the cd elements that have price
- /catalog/cd[price=10.90] selects cd elements with the price of 10.90
- /catalog/cd[price=10.90]/price selects all price elements with the price of 10.90
- //@country selects all "country" attributes
- //cd[@country] selects cd elements which have a "country" attribute
- //cd[@*] selects cd elements which have any attribute
- //cd[@country='UK'] selects cd elements with "country" attribute equal to 'UK'
####Sample doc:####
<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog>
<cd country="USA">
<title>Empire Burlesque</title>
<artist>Bob Dylan</artist>
<price>10.90</price>
</cd>
<cd country="UK">
<title>Hide your heart</title>
<artist>Bonnie Tyler</artist>
<price>10.0</price>
</cd>
<cd country="USA">
<title>Greatest Hits</title>
<artist>Dolly Parton</artist>
<price>9.90</price>
</cd>
</catalog>