+ * "Loads" a given controller and instances it if not yet cached. If the
+ * controller was not found one of the default controllers will be used
+ * depending on whether news shall be displayed.
+ *
+ * @param $controllerName A controller name we shall look for
+ * @return $controllerInstance A loaded controller instance
+ * @throws InvalidControllerException Thrown if even the requested
+ * controller class is missing (bad!)
+ */
+ protected function loadController ($controllerName) {
+ // Cache default command
+ $defaultController = $this->getConfigInstance()->getConfigEntry('default_' . strtolower($this->getClassPrefix()) . '_command');
+
+ // Init controller instance
+ $controllerInstance = NULL;
+
+ // Default controller
+ $this->setClassName($this->getClassPrefix() . 'DefaultNewsController');
+
+ // Generate the class name
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('BEFORE: controller=' . $controllerName);
+ if ($controllerName != $defaultController) {
+ // Create controller class name
+ $className = $this->getClassPrefix() . $this->convertToClassName($controllerName) . 'Controller';
+
+ // ... and set it
+ $this->setClassName($className);
+ } else {
+ // No news at main command or non-news command
+ $this->setClassName($this->getClassPrefix() . 'DefaultNewsController');
+ }
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('AFTER: controller=' . $this->getClassName());
+
+ // Is this class loaded?
+ if (!class_exists($this->getClassName())) {
+ // Throw an exception here
+ throw new InvalidControllerException(array($this, $controllerName), self::EXCEPTION_INVALID_CONTROLLER);
+ } // END - if
+
+ // Set default resolver config name
+ $resolverConfigEntry = '';
+
+ // Try to read a config entry for our resolver including controller name... ;-)
+ $resolverConfigEntry = sprintf('%s_cmd_%s_resolver_class', strtolower($this->getClassPrefix()), strtolower($controllerName));
+
+ // Get the config, this will throw an exception if there is no special command resolver
+ $resolverClass = $this->getConfigInstance()->getConfigEntry($resolverConfigEntry);
+
+ // Initiate the resolver and controller
+ $resolverInstance = ObjectFactory::createObjectByConfiguredName(
+ $resolverConfigEntry,
+ array(
+ $controllerName,
+ $this->getApplicationInstance()
+ )
+ );
+ $controllerInstance = ObjectFactory::createObjectByName(
+ $this->getClassName(),
+ array($resolverInstance)
+ );
+
+ // Return the result
+ return $controllerInstance;
+ }
+
+ /**
+ * Checks whether the given controller is valid