값 복사 막으려고 이렇게 두가지 클래스를 만드는건 오버인가염?

[rm . dd(bsmoo)]

class UserInfo

{

public:

        UserInfo(const CString& userId, const CString& userPw, const CString& userName, LONG authorityLevel);

        ~UserInfo();

        const CString& GetUserId() const;

        const CString& GetUserPw() const;

        const CString& GetUserName() const;

        LONG GetAuthorityLevel() const;

private:

        CString m_userId;

        CString m_userPw;

        CString m_userName;

        LONG m_authorityLevel;

};

class UserInfoParam

{

public:

        UserInfoParam(const CString& userId, const CString& userPw, const CString& userName, LONG authorityLevel);

        ~UserInfoParam();

        const CString& GetUserId() const;

        const CString& GetUserPw() const;

        const CString& GetUserName() const;

        LONG GetAuthorityLevel() const;

private:

        const CString& m_userId;

        const CString& m_userPw;

        const CString& m_userName;

        LONG m_authorityLevel;

};

[gisman(pavanotjava)]

UserInfo 클래스를 통째로 const & 로 전달하면 값의 복사가 안 일어난다.