<% request.setAttribute("decorator", "none"); response.setHeader("Cache-Control","no-cache"); //HTTP 1.1 response.setHeader("Pragma","no-cache"); //HTTP 1.0 response.setDateHeader ("Expires", 0); //prevents caching at the proxy server %>

Expressions

OGNL supports expressions using primitive values.

Arithmetic:

(6 - 2)/2

on the OGNL console and hit enter. Do it for me

Logical:

(true || false) and true

on the OGNL console and hit enter. Do it for me

Equality:

'a' == 'a'

on the OGNL console and hit enter. Do it for me

OGNL supports many more operators and expressions, see [Operators Reference] for more details.