/**
* Get DB connection.
*
* @return \src\db\driver\driver_interface
*/
protected function get_dbal_connection()
{
if ($this->dbal_connection === null) {
$dbal_driver_class = $this->config_php_file->convert_30_dbms_to_31($this->config_php_file->get('dbms'));
$this->dbal_connection = new $dbal_driver_class();
$this->dbal_connection->sql_connect($this->config_php_file->get('dbhost'), $this->config_php_file->get('dbuser'), $this->config_php_file->get('dbpasswd'), $this->config_php_file->get('dbname'), $this->config_php_file->get('dbport'), defined('src_DB_NEW_LINK') && src_DB_NEW_LINK);
}
return $this->dbal_connection;
}
