7月14 Enity对象的抽取

 

新增、修改对象时对公共属性进行操作

 

 

操作枚举

public enum OperatotType {
     /**
     * Create
     */
    Create(1),

    /**
     * Update
     */
    Update(2),

    /**
     * Delete
     */
    Delete(3),;

    Integer value;

    OperatotType(Integer value) {
        this.value = value;
    }

    public Integer getValue() {
        return value;
    }
}

 

常量枚举

public enum EntityEnum {

    /** 正常 */
    Normal(1),
    
    /** 删除 */
    Deleted(0);
    
    Integer value;

 

公共的父类

public class DTOIsDeleted {
    
    private String createUser;

    private Integer isDelete;

    private Date createTime;

 

工具类

/*
     * 新增，修改和删除操作时，给公共字段赋值
     */
    public static void setDTO(DTOIsDeleted dto, OperatotType operatotType, String userId) {

        Date currentTime = new Date();

        if (operatotType == OperatotType.Create) {
            if (EmptyUtils.isNotEmpty(userId)) {
                dto.setCreateUser(userId);
            }
            dto.setCreateTime(currentTime);
            dto.setIsDelete(EntityEnum.Normal.getValue());
        } else if (operatotType == OperatotType.Update) {
            
            /*
             *  修改
             * if (EmptyUtils.isNotEmpty(userId)) {
                dto.setModifyUser(userId);
            }
            dto.setModifyTime(currentTime);*/
            
        } else if (operatotType == OperatotType.Delete) {
            
            /*
             * 修改用户没添加
             * if (EmptyUtils.isNotEmpty(userId)) {
                dto.setModifyUser(userId);
            }*/
            //dto.setModifyTime(currentTime);
            
            dto.setCreateTime(currentTime);
            dto.setIsDelete(EntityEnum.Deleted.getValue());
        }
    }

 

 

二、测试

继承公共父类

public class Car extends DTOIsDeleted {
    
    private Integer id;

    private String name;

    private String createUser;

    private Integer isDelete;

    private Date createTime;

@Controller
public class OperatoController {
    
    @Autowired
    private OperatoService operatoService;
    
    /** 测试操作 */
    @GetMapping("/operato/add")
    @ResponseBody
    public R add() {
        operatoService.add();
        return R.ok();
    }
    
    /** 测试操作 */
    @GetMapping("/operato/delete/{id}")
    @ResponseBody
    public R delete(@PathVariable("id") int id) {
        operatoService.delete(id);
        return R.ok();
    }

 

service

@Service
public class OperatoService {

    @Autowired
    CarMapper carMapper;
    
    
    public void add() {
        Car car = new Car();
        car.setName("梅赛德斯"+RandomUtils.nextInt());
        CommonUtils.setDTO(car, OperatotType.Create, "123");
        
        carMapper.insert(car);
    }

    public void delete(int id) {
        Car car = carMapper.selectByPrimaryKey(id);
        if(car != null){
            CommonUtils.setDTO(car, OperatotType.Delete, "123");
            carMapper.updateByPrimaryKeySelective(car);
        }else{
            System.out.println("没有查询到car");
        }
    }

 

结果 字段名应该叫deleted 比较好