/**
  * Create and test connection and existence of destination table (but not it structure)
  *
  * @param String $dest table name in MySQL db
  * @param \SULB_OAS\ConfigParser $config Configuration
  * @return boolean true
  * @throws Exception if connection error
  * @throws Exception if table does not exist
  */
 public static function connect($dest, ConfigParser $config)
 {
     self::$connection = new \mysqli($config->getDbHost(), $config->getDbUser(), $config->getDbPassword(), $config->getDbName(), $config->getDbPort(), $config->getDbSocket());
     if (self::$connection->connect_error) {
         throw new Exception('Connect Error (' . self::$connection->connect_errno . ') ' . self::$connection->connect_error);
     }
     self::$destination = $dest;
     if ($res = self::$connection->query('show tables like ' . self::$destination) && $res->num_rows != 1) {
         throw new Exception('Table ' . self::$destination . ' is missing in DB ' . $config->getDbName());
     }
     return true;
 }