Bolt\EventListener\DoctrineListener::postConnect PHP Метод

    public function postConnect(ConnectionEventArgs $args)
    {
        $db = $args->getConnection();
        $platform = $args->getDatabasePlatform()->getName();
        if ($platform === 'sqlite') {
            $db->query('PRAGMA synchronous = OFF');
        } elseif ($platform === 'mysql') {
            /**
             * @link https://groups.google.com/forum/?fromgroups=#!topic/silex-php/AR3lpouqsgs
             */
            $db->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'string');
            // Set utf8 on names and connection, as all tables have this charset. We don't
            // also do 'SET CHARACTER SET utf8', because it will actually reset the
            // character_set_connection and collation_connection to @@character_set_database
            // and @@collation_database respectively.
            // see: http://stackoverflow.com/questions/1566602/is-set-character-set-utf8-necessary
            $db->executeQuery('SET NAMES utf8');
            $db->executeQuery('SET CHARACTER_SET_CONNECTION = utf8');
            // Increase group_concat_max_len to 100000. By default, MySQL
            // sets this to a low value – 1024 – which causes issues with
            // certain Bolt content types – particularly repeaters – where
            // the outcome of a GROUP_CONCAT() query will be more than 1024 bytes.
            // See also: http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_group_concat_max_len
            $db->executeQuery('SET SESSION group_concat_max_len = 100000');
        } elseif ($platform === 'postgresql') {
            /**
             * @link https://github.com/doctrine/dbal/pull/828
             */
            $db->executeQuery("SET NAMES 'utf8'");
        }
    }