Storm\Drivers\Platforms\Mysql\Syncing\TableTraitManager::MapForeignKeyMode PHP Метод

    private function MapForeignKeyMode($Mode)
    {
        switch ($Mode) {
            case Traits\ForeignKeyMode::NoAction:
                return 'NO ACTION';
            case Traits\ForeignKeyMode::Cascade:
                return 'CASCADE';
            case Traits\ForeignKeyMode::SetNull:
                return 'SET NULL';
            default:
                throw new \Storm\Core\UnexpectedValueException('Unknown foreign key mode: %s', $Mode);
        }
    }