TYPO3.Flow

Route part handlers are classes which follow a certain interface and can resolve one ore more URL segments as well as build up URL parts from given data.
E.g. we'll need a route part handler to resolve titles of TYPO3 pages.
The configuration will look something like

$c->myRoute
        ->setUrlPattern('[language]/[[page]]/[[pluginOptions]]')
        ->setDefaults(
            array(
                'package' => 'TYPO3',
                'controller' => 'Page',
                'action' => 'default',
                'language' => 'en'
            )
        )
        ->setRoutePartHandlers(
            array(
                'language' => 'F3_L10N_Routing_ISOResolver',
                'page' => 'F3_TYPO3_Routing_PageResolver',
                'pluginOptions' => 'F3_TYPO3_Routing_PluginResolver'
            )
        );