xsp + parameters

[cyril vidal]

Hi,   I would like to calculate the factorial of a number via XSP. The number should be transmitted as a parameter via HTTP.   The code I've got for this purpose is the following: it retrieves the parameter 'number' and defines a fac method, that calculates the factorial of its formal parameter. My problem: I don't know the syntax to calculate the fac() for the parameter 'number'. For the moment, I'm just able to calculate fac(8) or fac(13), and it runs well; but itsn't exactly what I want...   <?xml version="1.0" encoding="iso-8859-1"?> <xsp:page language="java" xmlns:xsp="http://apache.org/xsp" xmlns:xsp-request="http://apache.org/xsp/request/2.0"> <xsp:logic> public static long fac(long n) { if (n>1) return (fac(n-1)*n); else return 1; } </xsp:logic> <document> <para> <xsp-request:get-parameter name="number" default="Not provided"/> </para>   <factorial-calcul>result: <xsp:expr>fac(8)</xsp:expr></factorial-calcul> </document> </xsp:page>   I would be very grateful for any assistance, Thanks, Cyril.