Unity study notes: design patterns-factory abstract factory

    Factory: Choose one more

Function:  generate different objects according to different conditions

           These different object types are different, but have a common parent class

Case ↓  (Go to the restaurant to choose food)

Factory class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace dp1_FactoryMethod
{
    public class 饭馆
    {
        public static 饭 CreatConObj(int i)
        {
            饭 con=null;
            switch(i)
            {
                case 1:
                    con = new 米饭();
                    break;
                case 2:
                    con = new 面条();
                    break;
                case 3:
                    con = new 炒饭();
                    break;

            }
            return con;

        }

    }
}

Parent category: rice

Sub-category: noodles/rice/fried rice

Caller ↓

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace dp1_FactoryMethod
{
    class Program
    {
        static void Main(string[] args)
        {
            //方法1：常规写法
            //米饭 conObj = new 米饭();
            //炒饭 conObj = new 炒饭();
            //方法2：工厂方法
            饭 conObj = 饭馆.CreatConObj(3);
        }
    }
}

 

Abstract Factory : Series   

(Integrate and abstract multiple concrete factories for management) 

Case ↓ (Choose which country's factory will manufacture which kind of weapons from which country)

transfer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace dp2_Abstract_Factory
{
    class Program
    {
        static void Main(string[] args)
        {
            //选择中国生产
            抽象工厂 factory = new 中国工厂();
            factory.国家 = "中国";
            坦克 zhushi=factory.生产坦克();
            战斗机  cai=factory.生产战斗机();

            Console.WriteLine(factory.国家);
            Console.WriteLine(zhushi);
            Console.WriteLine(cai);

            Console.ReadLine();
        }
    }
}