/**
* @brief Retourne une instance connecté au dbms correspondant au driver
* @param $driver IDataSourceDriver driver de connexion
* @return DbmsDataSource
*/
public static function &getInstance(IDataSourceDriver &$driver)
{
if (is_null(self::$_instances)) {
self::$_instances = array();
}
$instance_key = $driver->getDomain();
if (!array_key_exists($instance_key, self::$_instances)) {
self::$_instances[$instance_key] =& self::createNew($driver);
}
self::$_instances[$instance_key]->connect();
return self::$_instances[$instance_key];
}
