Spring Data JPA @PrimaryKeyJoinColumn

import javax.persistence.*;
import java.io.Serializable;
 
 
@Entity
@Table(name = "users", schema = "hiber")
public class User implements Serializable {
 
 
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Long id;
 
 
    @Basic
    @Column(name = "username")
    private String username;
 
 
    @OneToOne(mappedBy = "user")
    @PrimaryKeyJoinColumn
    private Activated activated;
 
    // Getter and Setter
 
}

import javax.persistence.*;
import java.io.Serializable;
 
@Entity
@Table(name = "activated", schema = "hiber")
public class Activated implements Serializable {
 
 
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private long id;
 
 
    @Basic
    @Column(name = "active")
    private String active;
 
    
    @OneToOne
    @MapsId
    @JoinColumn(name = "id")
    private User user;
 
    // Getter and Setter
 
}

@Controller
public class Example1Controller {
 
    @Autowired
    ServiceJpa serviceJpa;
 
    @GetMapping(value = "/example1")
    public String getJpa (User user, Activated activated) {
 
 
        user.setUsername("Jack");
        serviceJpa.saveUser(user);
 
        // Далее возникает ошибка
        // detached entity passed to persist
 
        activated.setUser(user);
        serviceJpa.saveActivated(activated);
 
        return "/example1";
    }
}

@Controller
public class Example2Controller {
 
    @Autowired
    ServiceJpa serviceJpa;
 
    @GetMapping(value = "/example2")
    public String getJpa () {
        return "/example2";
    }
 
 
    @PostMapping(value = "/example2")
    public String postJpa (@ModelAttribute("user") User user, Activated activated) {
 
 
        serviceJpa.saveUser(user);
 
        activated.setActive("Activ");
 
        // Далее возникает ошибка
        // attempted to assign id from null one-to-one property
 
        serviceJpa.saveActivated(activated);
 
        return "redirect:/example2";
 
    }
}

@GetMapping(value = "/jpa")
 
    public String getJpa () {
 
        User user = new User();
        user.setId(2L);
        user.setUsername("Jack");
        serviceJpa.saveUser(user);
 
        Activated activated = new Activated();
        activated.setId(2L);
        activated.setActive("Active");
        serviceJpa.saveActivated(activated);
 
        return "/jpa";
 
    }

Person person = new Person("ABC-123");
        person.setId(3L);
        serviceJpa.savePerson(person);
 
        PersonDetails personDetails = new PersonDetails();
        personDetails.setNickName( "John Doe" );
        personDetails.setPerson( person );
        serviceJpa.savePersonDetails(personDetails);

@Data
@Accessors(chain = true)
@Entity(name = "PersonDetails")
public class PersonDetails {
 
    @Id
    private Long id;
 
    private String nickName;
 
    @OneToOne(cascade = CascadeType.ALL)
    @PrimaryKeyJoinColumn
    private Person person;
 
    public PersonDetails setPerson(Person person) {
        this.person = person;
        this.id = person.getId();
        return this;
    }
}
 
@Data
@Accessors(chain = true)
@Entity(name = "Person")
public class Person {
 
    @Id
    @GeneratedValue
    private Long id;
 
    private String registrationNumber;
}
 
 Person person = personRepository.save(new Person().setRegistrationNumber("123"));
        PersonDetails savedDetails = personDetailsRepository.save(
                new PersonDetails()
                        .setNickName("setNickName")
                        .setPerson(person));
 
        System.out.println(personDetailsRepository.findAll());