public function invokeDefaultShow()
 {
     $objClassname = $this->_getObjClassname();
     $repoClassname = $objClassname . 'Repository';
     load_file('/app/repository/' . strtolower($objClassname) . '_repo.php');
     $repo = new $repoClassname();
     $obj = $repo->get($_GET['id']);
     $objStruct = $repo->getStructure();
     foreach ($objStruct as $key => $value) {
         $columnNames[] = $key;
     }
     $values['id'] = $obj->getId();
     foreach ($columnNames as $param) {
         $getFunktion = 'get' . $param;
         $values[$param] = $obj->{$getFunktion}();
     }
     $view = new DefaultView();
     $view->showDefault($objClassname, $values);
 }