I have the following entities :

@Data
@Entity
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "user")
public class UserEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", nullable = false)
    private Integer id;

    @OneToMany(fetch = FetchType.EAGER, mappedBy = "user", cascade = CascadeType.ALL)
    private Collection<AddressEntity> adresses;

    public void addAddresses(Collection<AddressEntity> ad) {
        this.addresses = addresses;
        addresses.forEach(address-> address.setUser(this));
    }

}

@Data
@Entity
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "address")
public class AddressEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", nullable = false)
    private Integer id;

    @Column(name = "user_id", nullable = false)
    private Integer userId;

    @ManyToOne(optional = false)
    @JoinColumn(name = "user_id", referencedColumnName = "id", nullable = false, insertable = false, updatable = false)
    private UserEntity user;

}

And I save the entities by calling the userRepository :

users.addAdresses(addresses);
userRepository.saveAll(users);

When the user and the addresses don’t already exist in the database, I have the following error :

ERROR - ERROR: null value in column "user_id" of relation "address" violates not-null constraint

What do I miss here ?