Spring Data JPA 中嵌入式实体查询方法的正确姿势

@Embeddable
@Data
public class Person {
    private String cpf; // 身份证号
    private String fullName; // 姓名
    // ... 其他属性
}

@Data
@Entity
@Table(name = "tb_dentists")
public class Dentist implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private UUID id;

    @Embedded // 嵌入Person实体
    private Person person;

    private String croNumber; // 注册号
    // ... 其他属性
}

@Repository
public interface DentistRepository extends JpaRepository<Dentist, UUID> {
    boolean existsByCroNumber(String croNumber); // 工作正常

    // 错误尝试：直接引用嵌入式实体内部属性名
    boolean existsByCpf(String cpf); // 会抛出 PropertyReferenceException
}

@Repository
public interface DentistRepository extends JpaRepository<Dentist, UUID> {
    boolean existsByCroNumber(String croNumber);

    // 正确的命名方式：<嵌入式实体字段名><嵌入式实体内部属性名>
    boolean existsByPersonCpf(String cpf);
}

@Service
public class DentistService {

    private final DentistRepository dentistRepository;

    public DentistService(DentistRepository dentistRepository) {
        this.dentistRepository = dentistRepository;
    }

    public boolean existsByCroNumber(String croNumber) {
        return dentistRepository.existsByCroNumber(croNumber);
    }

    public boolean existsByPersonCpf(String cpf) {
        // 调用正确的仓库方法
        return dentistRepository.existsByPersonCpf(cpf);
    }

    public Dentist save(Dentist dentist) {
        // ... 保存逻辑
        return dentistRepository.save(dentist);
    }
}

@RestController
@RequestMapping("/dentists")
public class DentistController {

    private final DentistService dentistService;

    public DentistController(DentistService dentistService) {
        this.dentistService = dentistService;
    }

    @PostMapping
    public ResponseEntity<Object> saveDentist(@RequestBody @Valid Dentist dentistDto) {
        // 检查CRO号是否已存在
        if (dentistService.existsByCroNumber(dentistDto.getCroNumber())) {
            return ResponseEntity.status(HttpStatus.CONFLICT).body("CONFLICT: CRO number is already in use!");
        }

        // 检查CPF是否已存在，注意这里从 dentistDto.getPerson().getCpf() 获取CPF
        if (dentistService.existsByPersonCpf(dentistDto.getPerson().getCpf())) {
            return ResponseEntity.status(HttpStatus.CONFLICT).body("CONFLICT: CPF number is already in use!");
        }

        var dentistModel = new Dentist();
        BeanUtils.copyProperties(dentistDto, dentistModel);
        dentistModel.setRegistrationDate(LocalDateTime.now(ZoneId.of("UTC")));
        return ResponseEntity.status(HttpStatus.CREATED).body(dentistService.save(dentistModel));
    }
}