Citrix Systems 9.2 Operations for Calculating the Length of a String, For all text operations

Chapter 4 Advanced Expressions: Evaluating Text 87

Basic Operations on Text

Basic Text Operation	Description
text.EQ("string")	Returns a Boolean TRUE value if the target is an exact
	match with string.
	For example, the following expression returns a
	Boolean TRUE for a URL with a host name of
	“myhostabc”:
	http.req.url.hostname.eq("myhostabc")
text.	Returns a Boolean TRUE value if the target begins
STARTSWITH("string")	with string.
	For example, the following expression returns a
	Boolean TRUE for a URL with a host name of
	“myhostabc”:
	http.req.url.hostname.
	startswith("myhost")
text.ENDSWITH("string")	Returns a Boolean TRUE value if the target ends with
	string.
	For example, the following expression returns a
	Boolean TRUE for a URL with a host name of
	“myhostabc”:
	http.req.url.hostname.endswith("abc")

Operations for Calculating the Length of a String

The following operation returns a numeric value that shows the number of characters (not bytes) of a string:

text.LENGTH

For example, you may want to identify request URLs that exceed a particular length. Following is the expression that implements this example:

HTTP.REQ.URL.LENGTH < 500

After taking a count of the characters or elements in a string, you can apply numeric operations to them. For more information, see “Advanced Expressions: Working with Dates, Times, and Numbers,” on page 95.

Operations for Controlling Case Sensitivity

The following operation turns case sensitivity on or off for an expression.

Operations on Case Sensitivity of Text

Case Operation	Description
text.SET_TEXT_	This operation turns case sensitivity on or off
MODE(IGNORECASE	for all text operations.
NOIGNORECASE)