@Entity
@Table(name = "users")
public class User {

    @EmbeddedId
    @Column
    @GenericGenerator(name = "UserIdGenerator", strategy = "xxx.data.database.UserIdGenerator")
    @GeneratedValue(strategy=GenerationType.AUTO, generator = "UserIdGenerator")
    private UserId userId;
    @Embedded
    private UserPassword password;
    @Column(name = "is_verified")
    private boolean isVerified;
    @Column(name = "user_origin")
    @Enumerated(EnumType.STRING)
    private UserOrigin userOrigin;