[英]Is there any way to update columns in other entities after updating reference entity?
這是項目實體,它被我項目中的其他實體用作參考:
@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
}
另外兩個實體Roster
和OutsourceRequestForm
在創建時從項目實體復制字段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
}
對字段resourceSize
的更改也需要反映在上述兩個實體中。 這是服務 class 更新/插入項目實體的邏輯。
@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());
});
}
}
有什么辦法可以從這個 class 中刪除這部分projectList.forEach {}
並以更好的方式在其他位置進行,因為它違反了 單一責任原則?
它還將維護單一責任原則。 並且您也可以省略循環。 但是每次更新項目時都會出現一個問題,它會起作用(如果這是必需的,那很好)。
請試試這個: -
@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
}
聽眾:-
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());
}
}
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