Core_Config::__construct

function __construct()
{
    $config = Core::config('configuration');
    if ($config)
    {
        if (isset($config['database']) && $config['database']  )$this->database  = $config['database'];
        if (isset($config['tablename']) && $config['tablename'])$this->tablename = $config['tablename'];
    }

    $this->set_use_cache();
}