Question

我有2个实体Client和Address，它们之间具有一对多的关系，如下所示，该客户实体具有一个存储库，而addresse则没有，请问在业务中使用Java 8更新地址的最佳方法是什么层？两个实体都使用龙目岛注释

@Entity
@Builder
@Getter
@Setter
@AllArgsConstructor
@RequiredArgsConstructor(staticName = "of")
@NoArgsConstructor
@ToString()
@EqualsAndHashCode()
public class Client {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;    

    @Column(columnDefinition="LONGTEXT")
    private String commentaire;

    @Embedded
    private Contact contact

    @OneToMany(cascade = 
       {CascadeType.PERSIST,CascadeType.REMOVE},orphanRemoval = true)
    @Builder.Default
    @OrderBy("id")
    private Set<Adresse> adresses = new HashSet<>();
}

public class Adresse {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private String cite;

    @NonNull
    private String pays;

    private String region;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "client_id")
    private Client client;
}

这是我的方法更新客户端

@Service
@Transactional
public class ClientServiceImpl implements ClientService {
    @Autowired
    private ClientRepository clientRepository;
    public Client update(Client newClient) {
        return clientRepository.findById(newClient.getId()).map(client->{
            client.setNom_Client(newClient.getNom_Client());
            client.setDomaine_Client(newClient.getDomaine_Client());
            client.setCommentaire(newClient.getCommentaire());

            client.setContact(Contact.builder().nom(newClient.getContact().getNom()).prenom(newClient.getContact().getPrenom()).email(newClient.getContact().getEmail()).telephone(newClient.getContact().getTelephone()).build());

                        missing code client.getAdresses().addAll(newClient.getAdresses().stream().filter(a->a.getId()==null).collect(Collectors.toSet()));

            }
            return clientRepository.save(client);
        }).orElseGet(()->{return clientRepository.save(newClient);});
    }}

期望值：如果没有id_adresse，则向现有Set中添加一个新地址，否则在同一笔交易中更新具有id的字段，那么如何更新实体地址？预先谢谢你

寻求最佳实践来更新对象集

0 个答案: