protected function dbalLoad(array $config, ContainerBuilder $container)
    {
        $loader = new XmlFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config'));
        $loader->load('dbal.xml');

        if (empty($config['default_connection'])) {
            $keys                         = array_keys($config['connections']);
            $config['default_connection'] = reset($keys);
        }

        $this->defaultConnection = $config['default_connection'];

        $container->setAlias('database_connection', sprintf('doctrine.dbal.%s_connection', $this->defaultConnection));
        $container->getAlias('database_connection')->setPublic(true);
        $container->setAlias('doctrine.dbal.event_manager', new Alias(sprintf('doctrine.dbal.%s_connection.event_manager', $this->defaultConnection), false));

        $container->setParameter('doctrine.dbal.connection_factory.types', $config['types']);

        $connections = [];

        foreach (array_keys($config['connections']) as $name) {
            $connections[$name] = sprintf('doctrine.dbal.%s_connection', $name);
        }

        $container->setParameter('doctrine.connections', $connections);
        $container->setParameter('doctrine.default_connection', $this->defaultConnection);

        foreach ($config['connections'] as $name => $connection) {
            $this->loadDbalConnection($name, $connection, $container);
        }
    }