校园商铺-4店铺注册功能模块-4Dto之ShopExecution的实现

1. DTO：添加店铺的返回类型

问题：为什么不直接用实体类Shop呢？

原因：在操作Shop的时候，必然会有一个状态。添加店铺，添加成功，还是添加失败？
如果添加失败，失败是一个什么状态，这些都是要记录的，并且要返回controller层去处理。

1.1 店铺操作枚举类ShopStateEnum.java

package com.csj2018.o2o.enums;

public enum ShopStateEnum {
    CHECK(0,"审核中"),
    OFFLINE(-1,"非法店铺"),
    SUCCESS(1,"操作成功"),
    PASS(2,"通过认证"),
    INNER_ERROR(-1001,"内部系统错误"),
    NULL_SHOPID(-1002,"ShopId为空");
    private int state;
    private String stateInfo;
    private ShopStateEnum(int state,String stateInfo) {
        this.state = state;
        this.stateInfo = stateInfo;
    }
    public static ShopStateEnum stateOf(int state) {
        for(ShopStateEnum stateEnum:values()) {
            if(stateEnum.getState() == state) {
                return stateEnum;
            }
        }
        return null;
    }
    public int getState() {
        return state;
    }
    public String getStateInfo() {
        return stateInfo;
    }
}

1.2 ShopExecution.java

package com.csj2018.o2o.dto;

import java.util.List;

import com.csj2018.o2o.entity.Shop;
import com.csj2018.o2o.enums.ShopStateEnum;

public class ShopExecution {
    //结果状态
    private int state;
    //状态标识
    private String stateInfo;
    //店铺数量
    private int count;
    //操作的shop（增删改查店铺的时候用到）
    private Shop shop;
    //shop列表(查询店铺列表的时候使用)
    private List<Shop> shopList;

    public ShopExecution() {}
    //店铺操作失败时使用的构造器
    public ShopExecution(ShopStateEnum stateEnum){
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
    }
    //店铺操作成功时使用的构造器
    public ShopExecution(ShopStateEnum stateEnum,Shop shop){
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
        this.shop = shop;
    }
    //店铺操作成功时使用的构造器
    public ShopExecution(ShopStateEnum stateEnum,List<Shop> shopList){
        this.state = stateEnum.getState();
        this.stateInfo = stateEnum.getStateInfo();
        this.shopList = shopList;
    }
    public int getState() {
        return state;
    }
    public void setState(int state) {
        this.state = state;
    }
    public String getStateInfo() {
        return stateInfo;
    }
    public void setStateInfo(String stateInfo) {
        this.stateInfo = stateInfo;
    }
    public int getCount() {
        return count;
    }
    public void setCount(int count) {
        this.count = count;
    }
    public Shop getShop() {
        return shop;
    }
    public void setShop(Shop shop) {
        this.shop = shop;
    }
    public List<Shop> getShopList() {
        return shopList;
    }
    public void setShopList(List<Shop> shopList) {
        this.shopList = shopList;
    }

}