Hibernate级联错误

前言

今天在使用jpa中的级联保存时，发现报

ini 复制代码

A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance；

原因分析

其原因User实体类有个字段

其关联表为

less 复制代码

@Entity
@Table(name = "sys_user_client_type")
@Data
@FieldNameConstants
public class UserClientType extends FullAuditedEntity {
    private static final long serialVersionUID= -1;

    /**
     * 客户端类型
     */
    @Enumerated(EnumType.STRING)
    private ClientTypeEnum clientType;

    /**
     * 用户
     */
    @ManyToOne(optional = false, targetEntity=User.class)
    @JoinColumn(name = "user_id", referencedColumnName = BaseEntity.Fields.id)
    private User user;

}

在使用User更新级联的时候

ini 复制代码

if (CollectionUtils.isNotEmpty(createOrUpdateUserInput.getUserClientTypes())) {
    List<UserClientType> userClientTypeList = createOrUpdateUserInput.getUserClientTypes().stream()
            .distinct()
            .map(e -> {
                UserClientType userClientType = new UserClientType();
                userClientType.setClientType(e);
                userClientType.setUser(user);
                return userClientType;
            }).collect(Collectors.toList());
    user.setClientTypes(userClientTypeList);
}

报错，也就是说，更新该字段时不能使用setClientTypes()，需要使用set类的add或者addAll方法进行更新。

ini 复制代码

// 设置clientType
List<ClientTypeEnum> clientTypeEnums = createOrUpdateUserInput.getUserClientTypes();
if (clientTypeEnums != null) {
    List<UserClientType> userClientTypes = clientTypeEnums.stream().map(t -> {
        UserClientType clientType = new UserClientType();
        clientType.setClientType(t);
        clientType.setUser(user);
        return clientType;
    }).collect(Collectors.toList());
    user.getClientTypes().clear();
    user.getClientTypes().addAll(userClientTypes);