abstract protected AbstractWebTestCaller getTestCaller(WebImplicitObjects theObjects)

 public  void handleRequest(ImplicitObjects theObjects) throws ServletException 
{
                              
        WebImplicitObjects webImplicitObjects = (WebImplicitObjects) theObjects;
        // If the Cactus user has forgotten to put a needed jar on the server
        // classpath (i.e. in WEB-INF/lib), then the servlet engine Webapp
        // class loader will throw a NoClassDefFoundError exception. As this
        // method is the entry point of the webapp, we'll catch all
        // NoClassDefFoundError exceptions and report a nice error message
        // for the user so that he knows he has forgotten to put a jar in the
        // classpath. If we don't do this, the error will be trapped by the
        // container and may not result in an ... err ... understandable error
        // message (like in Tomcat) ...
        try
        {
            String serviceName = 
                getServiceName(webImplicitObjects.getHttpServletRequest());
            AbstractWebTestCaller caller = getTestCaller(webImplicitObjects);
            // TODO: will need a factory here real soon...
            ServiceEnumeration service =
                ServiceEnumeration.valueOf(serviceName);
            // Is it the call test method service ?
            if (service == ServiceEnumeration.CALL_TEST_SERVICE)
            {
                caller.doTest();
            }
            // Is it the get test results service ?
            else if (service == ServiceEnumeration.GET_RESULTS_SERVICE)
            {
                caller.doGetResults();
            }
            // Is it the test connection service ?
            // This service is only used to verify that connection between
            // client and server is working fine
            else if (service == ServiceEnumeration.RUN_TEST_SERVICE)
            {
                caller.doRunTest();
            }
            // Is it the service to create an HTTP session?
            else if (service == ServiceEnumeration.CREATE_SESSION_SERVICE)
            {
                caller.doCreateSession();                
            }
            else if (service == ServiceEnumeration.GET_VERSION_SERVICE)
            {
                caller.doGetVersion();
            }
            else
            {
                String message = "Unknown service [" + serviceName
                    + "] in HTTP request.";
                LOGGER.error(message);
                throw new ServletException(message);
            }
        }
        catch (NoClassDefFoundError e)
        {
            // try to display messages as descriptive as possible !
            if (e.getMessage().startsWith("junit/framework"))
            {
                String message = "You must put the JUnit jar in "
                    + "your server classpath (in WEB-INF/lib for example)";
                LOGGER.error(message, e);
                throw new ServletException(message, e);
            }
            else
            {
                String message = "You are missing a jar in your "
                    + "classpath (class [" + e.getMessage()
                    + "] could not " + "be found";
                LOGGER.error(message, e);
                throw new ServletException(message, e);
            }
        }
}

Handles the incoming request by extracting the requested service and calling the correct method on a WebTestCaller.