/**
  * Handles Request Execution. 
  * 
  * @param mixed $request HttpRequest @see Native5/Route/HttpRequest 
  *
  * @access public
  * @return void
  */
 public function execute($request)
 {
     ob_start();
     $logger = $GLOBALS['logger'];
     $this->_request = $request;
     $this->_response = new HttpResponse();
     try {
         WebSessionManager::updateActiveSession();
         foreach ($this->_preProcessors as $preProcessor) {
             $preProcessor->process($this->_request);
         }
         $functionToCall = $this->command->getFunction();
         if (empty($functionToCall) === true) {
             $functionToCall = 'default';
         }
         if (!is_callable(array(&$this, '_' . $functionToCall))) {
             $functionToCall = 'error';
         }
         call_user_func(array(&$this, '_' . $functionToCall), $this->_request);
         foreach ($this->_postProcessors as $postProcessor) {
             $postProcessor->process($this->_response);
         }
         ob_end_clean();
         if (empty($this->_response)) {
             $this->_response = new HttpResponse();
         }
         if ($this->_response->getEncoding() == null) {
             $responseMode = $this->_request->getParam('mode');
             if ($responseMode === 'ui') {
                 $this->_response->setEncoding('html');
             } else {
                 if ($responseMode === 'data') {
                     $this->_response->setEncoding('json');
                 }
             }
         }
         $this->_response->send();
     } catch (ServiceException $se) {
         $this->_response = new HttpResponse();
         $response->addHeader('HTTP/1.1 400 Bad Request');
         $this->_response->send();
     } catch (BadResponseException $bre) {
         $renderer = new TwigRenderer('500.html');
         if ($renderer->exists()) {
             $this->_response = new HttpResponse('none', $renderer);
         } else {
             $this->_response = new HttpResponse();
         }
         $response->addHeader('HTTP/1.1 500 Internal Server Error');
         $this->_response->send();
     }
     //end try
 }
 /**
  * Handle Unauthenticated access. 
  * 
  * @access protected
  * @return void
  */
 protected function _handleUnauthenticatedAccess()
 {
     header("HTTP/1.0 401 Unauthorized");
     $renderer = new TwigRenderer();
     $output = $renderer->render('unauth.tmpl', array());
     $result = array("code" => "401", "message" => $output);
     echo parent::encodeData($result);
     exit;
 }