通过javax.persistence.Tuple原生SQL获取DTO数据

@Entity
@Table(name = <font>"car"</font><font>)
<b>public</b> <b>class</b> Car implements Serializable {

    <b>private</b> <b>static</b> <b>final</b> <b>long</b> serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    <b>private</b> Long id;

    <b>private</b> String name;
    <b>private</b> String engine;
    <b>private</b> String color;
</font>

@Repository
@Transactional
<b>public</b> <b>class</b> Dao<T, ID <b>extends</b> Serializable> implements GenericDao<T, ID> {

    @PersistenceContext
    <b>private</b> EntityManager entityManager;

    @Override
    <b>public</b> <S <b>extends</b> T> S persist(S entity) {

        Objects.requireNonNull(entity, <font>"Cannot persist a null entity"</font><font>);

        entityManager.persist(entity);

        <b>return</b> entity;
    }

    @Transactional(readOnly = <b>true</b>)
    <b>public</b> List<Tuple> fetchCars() {
        List<Tuple> result = entityManager
                .createNativeQuery(
                        </font><font>"select name, color from car"</font><font>, Tuple.<b>class</b>
                ).getResultList();

        <b>return</b> result;
    }
</font>

@Service
<b>public</b> <b>class</b> CarService {

    <b>private</b> <b>final</b> Dao dao;

    <b>public</b> CarService(Dao dao) {
        <b>this</b>.dao = dao;
    }

    <b>public</b> List<Tuple> fetchCars() {
        <b>return</b> dao.fetchCars();
    }
}

@SpringBootApplication
<b>public</b> <b>class</b> TupleAndSqlApplication {
    
    <b>private</b> <b>static</b> <b>final</b> Logger logger
            = Logger.getLogger(TupleAndSqlApplication.<b>class</b>.getName());
    
    @Autowired
    <b>private</b> CarService carService;
    
    <b>public</b> <b>static</b> <b>void</b> main(String[] args) {
        SpringApplication.run(TupleAndSqlApplication.<b>class</b>, args);
    }
    
    @Bean
    <b>public</b> ApplicationRunner init() {
        <b>return</b> args -> {
            
            carService.populateCars();
            List<Tuple> cars = carService.fetchCars();
            
            cars.forEach((e) -> logger.info(() -> <font>"Car: "</font><font> + e.get(</font><font>"name"</font><font>) + </font><font>","</font><font> + e.get(</font><font>"color"</font><font>)));
        };
    }
}
</font>