protected function getDefaultParts()
	{
		if (!isset(CmdUpsert::$DEFAULT))
		{
			CmdUpsert::$DEFAULT		= parent::getDefaultParts();
			CmdUpsert::$PART_SET	= count(CmdUpsert::$DEFAULT);
			
			CmdUpsert::$DEFAULT[CmdUpsert::$PART_SET] = false;
		}
		
		return CmdUpsert::$DEFAULT;
	}