/**
* Return a singleton connection instance.
*
* If a singleton instance has not been created yet it will be created for you.
*
* @see DBALite::factory()
* @param string $driver Needed on first call only.
* @param array $config Needed on first call only.
* @return DBALite_DriverAbstract
*/
public static function getSingleton($driver = '', $config = null)
{
if (is_null(self::$singleton)) {
self::$singleton = self::factory($driver, $config);
}
return self::$singleton;
}
