Java 模型映射器 使用自定义方法

这是一个springboot项目，我需要使用父级的指定字段和每个子级的newest个指定字段为仪表板视图构建DTO.

实体为飞机，与应答器、维护判断和emits 机有一对一的关系.

飞机

@Entity
@Data
public class 飞机 {
    @Id
    @GeneratedValue(strategy = IDENTITY)
    private Long id;
    private String registration;
    @JsonIgnore
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "plane")
    private List<应答器> list应答器 = new ArrayList<>();
    @JsonIgnore
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "plane")
    private List<Transmitter> listTransmitter = new ArrayList<>();
    @JsonIgnore
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "plane")
    private List<MaintCheck> listMaintCheck = new ArrayList<>();

应答器

@Entity
@Data
@NoArgsConstructor
@AllArgsConstructor
public class 应答器 {
    @Id
    @GeneratedValue(strategy = IDENTITY)
    private Long id;
    private String code;
    private LocalDate dateInserted;
    @ManyToOne(fetch = FetchType.LAZY, optional = true)
    private 飞机 plane;
}

Maint Check和Transmitter具有具有LocalDate字段的类似实体.

飞机DTO looks liike

@Data
public class 飞机DTO {
private String registration;
private LocalDate maintCheck;      // date of most recent Maint Check
private String transponderCode;    // string of most recent 应答器 code 
private Integer channel;           // Intger of most recent Transmitter Freq     
}

I have attempted to consruct this 飞机DTO in the service layer, but I am manually doing much of the sorting of the lists of 应答器, Transmitter and Maint Check to get the most recent record from these lists.

//DRAFT METHOD CONSTRUCT DTO
@Override
public 飞机SummaryDTO get飞机SummaryDTOById(Long id) {
  飞机 飞机 = this.get(id);
  飞机SummaryDTO 飞机SummaryDTO = new 飞机SummaryDTO();
    ModelMapper mapper = new ModelMapper();
    飞机SummaryDTO = modelMapper.map(get(id), 飞机SummaryDTO.class);
    飞机SummaryDTO.setTRANSPONDERCode(getNewestTRANSPONDERCode(飞机));
    飞机SummaryDTO.setLastMaintCheck(getNewestMaintCheckDate(飞机));
    飞机SummaryDTO.setChannel(getTransmitterCode(飞机));
    飞机SummaryDTO.setChannelOffset(getTransmitterOffset(飞机));
    return 飞机SummaryDTO;
}

// RETURN NEWEST DATE OF MAINT CHECK BY CATCH DATE
public LocalDate getNewestMaintCheckDate(飞机 飞机) {
    List<MaintCheck> listMaintCheck = new ArrayList<>(飞机.getListMaintCheck());
    MaintCheck newest = listMaintCheck.stream().max(Comparator.comparing(MaintCheck::getCatchDate)).get();
    return newest.getCatchDate();
}

// RETURN NEWEST TRANSPONDER CODE FROM 飞机 BY DATE INSERTED
public String getNewest应答器Code(飞机 飞机) {
    List<应答器> list应答器 = new ArrayList<>(飞机.getList应答器());
    应答器 newest = list应答器.stream().max(Comparator.comparing(应答器::getDateInserted)).get();
    return newest.getCode();
}

// OTHER METHODS TO GET MOST RECENT RECORD

QUESTION是否有更好的方法来计算子元素的最新记录，更有效地使用模型映射器(自定义方法？)

如果MapStruct更好地支持获取最近的子元素，我愿意更改为MapStruct.