Citrix Systems Network Router 9.2 User Manual

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