/------------------------------
COURIER ENTITY:

@Entity
public class Courier {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    @NotBlank(message = "First name is required")
    private String firstName;
    @NotBlank(message = "Last name is required")
    private String lastName;
    @NotBlank(message = "Email is required")
    private String email;
    @NotBlank(message = "Password is required")
    private String password;
    @NotBlank(message = "Phone number is required")
    private String phoneNumber;

    private String type = "courier";

    @OneToMany(mappedBy = "courier")
    private List<OrderItem> orders;

    @OneToMany(mappedBy = "rejectionsForCourier")
    private List<Rejection> couriersRejections;

@Entity
public class Courier {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    @NotBlank(message = "First name is required")
    private String firstName;
    @NotBlank(message = "Last name is required")
    private String lastName;
    @NotBlank(message = "Email is required")
    private String email;
    @NotBlank(message = "Password is required")
    private String password;
    @NotBlank(message = "Phone number is required")
    private String phoneNumber;

    private String type = "courier";

    @OneToMany(mappedBy = "courier")
    private List<OrderItem> orders;

    @OneToMany(mappedBy = "rejectionsForCourier")
    private List<Rejection> couriersRejections;
}

  @Entity
public class Courier {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    @NotBlank(message = "First name is required")
    private String firstName;
    @NotBlank(message = "Last name is required")
    private String lastName;
    @NotBlank(message = "Email is required")
    private String email;
    @NotBlank(message = "Password is required")
    private String password;
    @NotBlank(message = "Phone number is required")
    private String phoneNumber;

    private String type = "courier";

    @OneToMany(mappedBy = "courier")
    private List<OrderItem> orders;

    @OneToMany(mappedBy = "rejectionsForCourier")
    private List<Rejection> couriersRejections;
}
  
/----------------------------
DISPATCHER ENTITY:
  
@Entity
public class Dispatcher {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    @NotBlank(message = "First name is required")
    private String firstName;
    @NotBlank(message = "Last name is required")
    private String lastName;
    @NotBlank(message = "Email name is required")
    private String email;
    @NotBlank(message = "Email is required")
    private String password;
    @NotBlank(message = "Phone number is required")
    private String phoneNumber;

    private String type = "dispatcher";

    @OneToMany(mappedBy = "dispatcher", cascade = CascadeType.ALL)
    private List<OrderItem> orderItems;
}