java在更新引用实体之后，有没有办法更新其他实体中的列？

Question

这是我的项目中其他实体用作参考的项目实体：

@Entity
@Data
@RequiredArgsConstructor
@AllArgsConstructor
public class Project {

    @Id 
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    @NonNull private String projectName;
    @NonNull private String projectCode;
    @NonNull private String description;

    @NonNull private Integer resourceSize;

    //other fields

}

另外两个实体Roster和OutsourceRequestForm，它们在创建时从项目实体复制字段projectName和resourceSize

@Entity
@Data
@RequiredArgsConstructor
@AllArgsConstructor
public class Roster {

    @Id 
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    @Version
    private Long version;

    @NonNull private String projectName;
    @NonNull private Integer resourceSize;

    //other fields

}

@Entity
@RequiredArgsConstructor
@Data
public class OutsourceRequestForm {

    @Id 
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    @Version
    private Long version;

    @NonNull private String projectName;
    @NonNull private Integer resourceSize;

    //other fields

}

对字段resourceSize的更改也需要反映在上述两个实体中。 下面是服务类更新/插入项目实体的逻辑

@Service
public class ProjectServiceImpl implements ProjectService {

    @Autowired ProjectRepository projectRepo;

    @Autowired ProjectWebClientService projectWebClientService; 

    @Autowired RosterService rosterService;
    @Autowired OutsourceRequestFormService orfService;

    /**
     * 
     */
    public void updateProjectData() {
        //delete existing records
        projectRepo.deleteAll();
        //fetch data from other server
        List<Project> projectList = projectWebClientService.getProjectData(); 
        //save project data
        projectRepo.save(projectList);

        // ---->   need solution for below part   <----
        projectList.forEach(project-> {
            //find rosters by projectName and update resourceSize
            rosterService.updateRoster(project.getProjectName() ,   project.getResourceSize());
            //find orf by projectName and update resourceSize
            orfService.updateOrf(project.getProjectName() ,   project.getResourceSize());
        });
    }

}

是否有任何方法可以从这个类中删除这个部分projectList.forEach {}，并在其他位置以更好的方式执行它，因为它违反了single responsibility principle

Answer 1

它还将维持单一责任原则。你也可以省略这个循环。但每次更新项目时都会遇到一个问题，它会起作用（如果这是要求，那么就可以了）

请试试这个：-

@Entity
@Data
@RequiredArgsConstructor
@AllArgsConstructor
**@EntityListeners({RosterListener.class ,OrfListener.class})**
public class Project {

    @Id 
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private Long id;

    @NonNull private String projectName;
    @NonNull private String projectCode;
    @NonNull private String description;

    @NonNull private Integer resourceSize;

    //other fields

}

听众：-

import javax.persistence.PostUpdate;
    public class RosterListener{

        @PostUpdate
         void onProjectUpdate(Project roject) {
            RosterService  rosterService = (RosterService ) BeanUtility.getBean("RosterService "); // find this as from your application context environment
            osterService.updateRoster(project.getProjectName(), project.getResourceSize());
         }

    }

import javax.persistence.PostUpdate;
    public class OrfListener{

        @PostUpdate
         void onProjectUpdate(Project roject) {
            OutsourceRequestFormService   outsourceRequestFormService  = (OutsourceRequestFormService  ) BeanUtility.getBean("outsourceRequestFormService  "); // find this as from your application context environment
            outsourceRequestFormService.updateOrf(project.getProjectName(), project.getResourceSize());
         }

    }