How to convert a string to upper case or lower case in CA APIM Gateway

Products

• STARTER PACK-7
• CA Rapid App Security
• CA API Gateway

Issue/Introduction

CA API Gateway doesn't have string processing assertions.
But gateway has xpath assertion supports xpath functions which can be used to convert a string to upper case or lower case.

Environment

Release:
Component: APIGTW

Resolution

The gateway 9.3 supports xpath 2.0, but the gateway in old version may only support xpath 1.0. 

• Function for both xpath 1.0 and xpath 2.0:

translate(string1,string2,string3) -- Converts string1 by replacing the characters in string2 with the characters in string3

xpath expression example for upper case:
translate($request.mainpart,'abcdefghijklmnopqrstuvwxyz','ABCDEFGHIJKLMNOPQRSTUVWXYZ')

• Functions for xpath 2.0:

1. upper-case(string) -- Converts the string argument to upper-case
2. lower-case(string) -- Converts the string argument to lower-case

xpath expression example for lower case:
lower-case($orgstr)

 

The sample policies will be attached.

Additional Information

https://www.w3schools.com/xml/xsl_functions.asp