Java Doc for RequestContexts.java in  » Ajax » zk » org » zkoss » web » servlet » xel » Java Source Code / Java DocumentationJava Source Code and Java Documentation

It is designed to make the signature of XEL functions (see org.zkoss.web.fn.ServletFns ) simpler. For example, org.zkoss.web.fn.ServletFns.isExplorer requires no argument, since it assumes the current context can be retrieved from RequestContexts.getCurrent .

Spec Issue:
It is controversial whether the introduction of RequestContext and RequestContexts is worth. However, we have to maintain the backward compatibility of the XEL/EL function signatures.
author:
   tomyeh
since:
   3.0.0

However, you don't need to invoke this method if you are using DSP.
See Also:   RequestContexts.push

However, you don't need to invoke this method if you are using DSP.

1. If go thru DSP, it is done automatically (by org.zkoss.web.servlet.dsp.Interpreter

Note: you must use try/finally as follows:

RequestContexts.push(jc);
 try {
 ...
 } finally {
 RequestContexts.pop();
 }