Spring 弹簧座&x2B；JPA&x2B；H2@manytone双向关系。无法存储子实体

我在尝试使用JPA存储某些实体时遇到一些问题，情况如下：

WebMessageEntity.java

@EqualsAndHashCode
@Data
@Entity(name = "web_message")
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class WebMessageEntity{

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Getter
@Column(name = "WEB_MESSAGE_ID")
private Long id;

@Getter
@Setter
@NotEmpty
private String hotelTicker;

@Getter
@Setter
@NotNull
@Enumerated(EnumType.STRING)
private WebMessageColor color;

@Getter
@Setter
@NotNull
@Enumerated(EnumType.STRING)
@Column(name = "message_type")
private WebMessageType type;

@Getter
@Setter
@NotNull
@Enumerated(EnumType.STRING)
private ReservationStep step;

@Getter
@Setter
@NotNull
@Enumerated(EnumType.STRING)
@Column(name = "message_trigger")
private WebMessageTrigger trigger;

private int duration;

@Enumerated(EnumType.STRING)
private WebMessagePosition position;

@Getter
@Setter
@NotNull
private boolean isActive;

@Getter
@Setter
@NotNull
@Convert(converter = LocalDateAttributeConverter.class)
private LocalDate startDate;

@Getter
@Setter
@NotNull
@Convert(converter = LocalDateAttributeConverter.class)
private LocalDate endDate;

@Setter
@OneToMany(mappedBy = "webMessage", cascade = CascadeType.ALL)
@NotNull
private List<WebMessageTranslationEntity> translations;

@Getter
@Setter
@NotEmpty
private String userName;

@Getter
@Setter
@NotNull
@Convert(converter = LocalDateTimeAttributeConverter.class)
private LocalDateTime creationDate;

@Getter
@Setter
private String modifiedBy;

@Getter
@Setter
@Convert(converter = LocalDateTimeAttributeConverter.class)
private LocalDateTime modificationDate;


//constructors
//------------------------------------------------------------------------------------------------------



private WebMessageEntity(String hotelTicker, WebMessageColor color, WebMessageType type, ReservationStep step,
                         WebMessageTrigger trigger, boolean isActive, LocalDate startDate, LocalDate endDate,
                         List<WebMessageTranslationEntity> translations, String userName, LocalDateTime creationDate,
                         String modifiedBy, LocalDateTime modificationDate)
{
    this.hotelTicker = hotelTicker;
    this.color = color;
    this.type = type;
    this.step = step;
    this.trigger = trigger;
    this.isActive = isActive;
    this.startDate = startDate;
    this.endDate = endDate;
    this.translations = translations;
    this.userName = userName;
    this.creationDate = creationDate;
    this.modifiedBy = modifiedBy;
    this.modificationDate = modificationDate;
}

private WebMessageEntity(String hotelTicker, WebMessageColor color, WebMessageType type, ReservationStep step,
                        WebMessageTrigger trigger, int duration, WebMessagePosition position, boolean isActive,
                        LocalDate startDate, LocalDate endDate, List<WebMessageTranslationEntity> translations,
                        String userName, LocalDateTime creationDate, String modifiedBy, LocalDateTime modificationDate)
{
    this.hotelTicker = hotelTicker;
    this.color = color;
    this.type = type;
    this.step = step;
    this.trigger = trigger;
    this.setDuration(duration);
    this.setPosition(position);
    this.isActive = isActive;
    this.startDate = startDate;
    this.endDate = endDate;
    this.translations = translations;
    this.userName = userName;
    this.creationDate = creationDate;
    this.modifiedBy = modifiedBy;
    this.modificationDate = modificationDate;
}

//GETTERS, SETTERS and some private field verification methods

@控制器

@RestController
@RequestMapping("/api")
public class WebMessageResource {


    private final WebMessageService messageService;

    @Autowired
    public WebMessageResource(WebMessageService messageService) {
    this.messageService = messageService;
    }


    @PostMapping("{hotelTicker}/messages")
    public ResponseEntity<?> createMessage(@RequestBody @Valid     WebMessageDTO dto, @PathVariable @NotNull String hotelTicker) {


        if (verifyHotelTicker(dto, hotelTicker)) {

            WebMessageEntity newEntity =         messageService.store(fromWebMessageDTOToEntity(dto));

            HttpHeaders headers = new HttpHeaders();

            //TODO rebuild URI with exact path to access resource
        headers.setLocation(ControllerLinkBuilder.linkTo(FilterEntity.class).slash(newEntity.getHotelTicker()).slash(newEntity.getId()).toUri());

        return new ResponseEntity<>(fromWebMessageEntityToDTO(newEntity), headers, HttpStatus.CREATED);

    }

    return new ResponseEntity<>("Hotel ticker specified in URI doesn't match with DTO's hotel ticker", HttpStatus.BAD_REQUEST);

}

private boolean verifyHotelTicker(WebMessageDTO dto, String hotelTicker) {
    return hotelTicker.equals(dto.getHotelTicker());
}

private List<WebMessageTranslationEntity> fromTranslationDTOsToEntities(List<WebMessageTranslationDTO> translationDTOs) {

    return translationDTOs
            .stream()
            .map(translation -> WebMessageTranslationEntity
                    .builder()
                    .content(translation.getContent())
                    .locale(translation.getLocale())
                    .build())
                .collect(toList());

    }

    private WebMessageEntity fromWebMessageDTOToEntity(WebMessageDTO webMessageDTOs) {

        return WebMessageEntity
                .builder()
                .hotelTicker(webMessageDTOs.getHotelTicker())
                .color(webMessageDTOs.getColor())
                .type(webMessageDTOs.getType())
                .step(webMessageDTOs.getStep())
                .trigger(webMessageDTOs.getTrigger())
                .duration(webMessageDTOs.getDuration())
                .position(webMessageDTOs.getPosition())
                .isActive(webMessageDTOs.getIsActive())
                .startDate(webMessageDTOs.getStartDate())
                .endDate(webMessageDTOs.getEndDate())
                .userName(webMessageDTOs.getUserName())
                .creationDate(webMessageDTOs.getCreationDate())
                .modifiedBy(webMessageDTOs.getModifiedBy())
                .modificationDate(webMessageDTOs.getModificationDate())
                .translations(this.fromTranslationDTOsToEntities(webMessageDTOs.getTransla    tions()))
                .build();
}

private WebMessageDTO fromWebMessageEntityToDTO(WebMessageEntity webMessageEntity) {

    return WebMessageDTO
            .builder()
            .id(webMessageEntity.getId())
            .hotelTicker(webMessageEntity.getHotelTicker())
            .color(webMessageEntity.getColor())
            .type(webMessageEntity.getType())
            .step(webMessageEntity.getStep())
            .trigger(webMessageEntity.getTrigger())
            .duration(webMessageEntity.getDuration())
            .position(webMessageEntity.getPosition())
            .isActive(webMessageEntity.isActive())
            .startDate(webMessageEntity.getStartDate())
            .endDate(webMessageEntity.getEndDate())
            .userName(webMessageEntity.getUserName())
            .creationDate(webMessageEntity.getCreationDate())
            .modifiedBy(webMessageEntity.getModifiedBy())
            .modificationDate(webMessageEntity.getModificationDate())
            .translations(this.fromTranslationEntitiesToDTO(webMessageEntity.getTranslations()))
            .build();
}

private List<WebMessageTranslationDTO> fromTranslationEntitiesToDTO(List<WebMessageTranslationEntity> translationEntities) {

    return translationEntities
            .stream()
            .map(translation -> WebMessageTranslationDTO
                    .builder()
                    //.id(translation.getId())
                    .content(translation.getContent())
                    .locale(translation.getLocale())
                    .build())
            .collect(toList());
}


}

表创建YAML文件

- changeSet:
  id: '008-1'
  author: arnau
  comment: 'create table web_message'
  preConditions:
    - onFail: MARK_RAN
    - onFailMessage: 'Table already exists, must be production environment...'
    - not:
      - tableExists:
          tableName: web_message
  changes:
  - createTable:
      tableName: web_message
      columns:
      - column:
          name: WEB_MESSAGE_ID
          type: NUMBER
          autoIncrement: true
          constraints:
            primaryKey: true
            nullable: false
      - column:
          name: hotel_ticker
          type: VARCHAR(155)
          constraints:
            nullable: false
      - column:
          name: color
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: message_type
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: step
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: message_trigger
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: duration
          type: NUMBER
          constraints:
            nullable: true
      - column:
          name: position
          type: VARCHAR(255)
          constraints:
            nullable: true
      - column:
          name: is_active
          type: BOOLEAN(1)
          constraints:
            nullable: false
      - column:
          name: start_date
          type: DATE
          constraints:
            nullable: false
      - column:
          name: end_date
          type: DATE
          constraints:
            nullable: false
      - column:
          name: user_name
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: creation_date
          type: TIMESTAMP
          constraints:
            nullable: false
      - column:
          name: modified_by
          type: VARCHAR(255)
          constraints:
            nullable: true
      - column:
          name: modification_date
          type: TIMESTAMP
          constraints:
            nullable: true


- changeSet:
      id: '008-2'
      author: arnau
      comment: 'create table web_message_translation'
      preConditions:
        - onFail: MARK_RAN
        - onFailMessage: 'Table already exists, must be production environment...'
        - not:
          - tableExists:
              tableName: web_message_translation
      changes:
      - createTable:
          tableName: web_message_translation
          columns:
          - column:
              name: MESSAGE_TRANSLATION_ID
              type: NUMBER
              autoIncrement: true
              constraints:
                primaryKey: true
                nullable: false
          - column:
              name: locale
              type: VARCHAR(2)
              constraints:
                unique: true
                nullable: false
          - column:
              name: content
              type: VARCHAR(255)
              constraints:
                nullable: false
          - column:
              name: message_id
              type: CHAR(22)
              constraints:
                nullable: false
                references: web_message(WEB_MESSAGE_ID)
                foreignKeyName:     fk_web_message_translation__web_message
  - changeSet:
      id: '008-3'
      author: arnau
      comment: 'Add unique constraint by locale and web_message_id'
      changes:
      - addUniqueconstraint:
        tableName: web_message_translation
        columnNames: locale, message_id
        constraintName: uc_locale__message_id

问题是，当我尝试存储这些实体时，JPA尝试将实体

webMessageTranslationEntity

存储在

message\u id

列中，该列的值为NULL，显然，DB会拒绝该项，因为该字段被设置为非NULL

如何使用此必备项存储这些实体？

@NotNull
@NotNull
private List<WebMessageTranslationEntity> translations;

私人名单翻译；

这会将外键上的约束设置为不为null

保留约束并注入持久化的WebMessageEntity

保留约束并注入一个非持久化WebMessageEntity，但需要将WebMessageEntity端的级联设置为持久化（或全部）

通过删除@NotNull更改约束

@NotNull
私人名单翻译；

这会将外键上的约束设置为不为null

保留约束并注入持久化的WebMessageEntity

保留约束并注入一个非持久化WebMessageEntity，但需要将WebMessageEntity端的级联设置为持久化（或全部）

通过删除@NotNull更改约束

---

更改约束不是一个选项，因此我尝试在WebMessageTranslation entit的WebMessageEntity属性中添加一个CascadeType.ALL，如下所示：

@manytone（cascade=CascadeType.ALL）@JoinColumn（name=“MESSAGE\u ID”）私有WebMessageEntity webMessage但是问题仍然存在，所以最后我必须单独持久化这些实体，首先持久化WebMessageEntity，然后持久化WebMessageTranslations。但我认为这必须是一种更干净的方式。我认为它已经解决了，但如果我找到更好的方法，我会把它贴在这里。Thank's a lot@amerqarabsat级联定义了子实体上操作的级联，因此如果您有一个对B的引用的a，并且您希望在持久化a时持久化引用的B，那么您将在a内部根据B引用的关系定义级联，因此，在您的cane中，它应该在OneToMany而不是ManyTone中更改约束不是一个选项，因此我尝试添加一个CascadeType.ALL在WebMessageTranslation entit的WebMessageEntity属性中，如下所示：
@manyTone（cascade=CascadeType.ALL）@JoinColumn（name=“MESSAGE\u ID”）私有WebMessageEntity webMessage但是问题仍然存在，所以最后我必须单独持久化这些实体，首先持久化WebMessageEntity，然后持久化WebMessageTranslations。但我认为这必须是一种更干净的方式。我认为它已经解决了，但如果我找到更好的方法，我会把它贴在这里。Thank's a lot@amerqarabsat级联定义了子实体上操作的级联，因此，如果您有一个对B的引用的a，并且您希望在持久化a时持久化引用的B，那么您将在a内部根据B引用的关系定义级联，因此在您的cane中，它应该在一个域中，而不是在多个域中
- changeSet:
  id: '008-1'
  author: arnau
  comment: 'create table web_message'
  preConditions:
    - onFail: MARK_RAN
    - onFailMessage: 'Table already exists, must be production environment...'
    - not:
      - tableExists:
          tableName: web_message
  changes:
  - createTable:
      tableName: web_message
      columns:
      - column:
          name: WEB_MESSAGE_ID
          type: NUMBER
          autoIncrement: true
          constraints:
            primaryKey: true
            nullable: false
      - column:
          name: hotel_ticker
          type: VARCHAR(155)
          constraints:
            nullable: false
      - column:
          name: color
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: message_type
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: step
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: message_trigger
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: duration
          type: NUMBER
          constraints:
            nullable: true
      - column:
          name: position
          type: VARCHAR(255)
          constraints:
            nullable: true
      - column:
          name: is_active
          type: BOOLEAN(1)
          constraints:
            nullable: false
      - column:
          name: start_date
          type: DATE
          constraints:
            nullable: false
      - column:
          name: end_date
          type: DATE
          constraints:
            nullable: false
      - column:
          name: user_name
          type: VARCHAR(255)
          constraints:
            nullable: false
      - column:
          name: creation_date
          type: TIMESTAMP
          constraints:
            nullable: false
      - column:
          name: modified_by
          type: VARCHAR(255)
          constraints:
            nullable: true
      - column:
          name: modification_date
          type: TIMESTAMP
          constraints:
            nullable: true


- changeSet:
      id: '008-2'
      author: arnau
      comment: 'create table web_message_translation'
      preConditions:
        - onFail: MARK_RAN
        - onFailMessage: 'Table already exists, must be production environment...'
        - not:
          - tableExists:
              tableName: web_message_translation
      changes:
      - createTable:
          tableName: web_message_translation
          columns:
          - column:
              name: MESSAGE_TRANSLATION_ID
              type: NUMBER
              autoIncrement: true
              constraints:
                primaryKey: true
                nullable: false
          - column:
              name: locale
              type: VARCHAR(2)
              constraints:
                unique: true
                nullable: false
          - column:
              name: content
              type: VARCHAR(255)
              constraints:
                nullable: false
          - column:
              name: message_id
              type: CHAR(22)
              constraints:
                nullable: false
                references: web_message(WEB_MESSAGE_ID)
                foreignKeyName:     fk_web_message_translation__web_message
  - changeSet:
      id: '008-3'
      author: arnau
      comment: 'Add unique constraint by locale and web_message_id'
      changes:
      - addUniqueconstraint:
        tableName: web_message_translation
        columnNames: locale, message_id
        constraintName: uc_locale__message_id

@NotNull
private List<WebMessageTranslationEntity> translations;