Citrix Systems 9.2 Or a string. Node-sets are converted to, XPath string conversion routine, File

Chapter 6	Advanced Expressions: Parsing HTTP, TCP, and UDP Data		137
XPath Prefix		Description
text.XPATH(xpathex)		Operate on an XML file and return a node-set
		or a string. Node-sets are converted to
		corresponding strings by using the standard
		XPath string conversion routine.
		For example, the following expression selects
		all the nodes that are enclosed by “/Book/
		creator” (a node-set) in the first 1000 bytes of
		the body:
		HTTP.REQ.BODY(1000).XPATH(xp%/
		Book/creator%)
		Parameters:
		xpathex - XPath expression
text.XPATH_JSON(xpathex)		Operate on a JSON file and return a Boolean
		value.
		For example, {consider the following JSON
		file:
		{ "Book":{ "creator":{ "person":{
		"name":'<name>' } }, "title":'<title>' } }
		The following expression operates on the
		JSON file and returns a Boolean TRUE if the
		JSON file contains a node named “creator,”
		whose parent node is “Book,” in the first 1000
		bytes:
		HTTP.REQ.BODY(1000).XPATH_
		JSON(xp%boolean(/Book/creator)%)
		Parameters:
		xpathex - XPath Boolean expression
text.XPATH_JSON(xpathex)		Operate on a JSON file and return a value of
		data type “double.”
		For example, consider the following JSON
		file:
		{ "Book":{ "creator":{ "person":{
		"name":'<name>' } }, "title":'<title>',
		"price":"36" } }
		The following expression operates on the
		JSON file and converts the string “36” to a
		value of data type “double” if the string is
		present in the first 1000 bytes of the JSON
		file.
		HTTP.REQ.BODY(1000).XPATH_
		JSON(xp%number(/Book/price)%)
		Parameters:
		xpathex - XPath numeric expression