抽象工厂

  // 抽象工厂模式     // 提供一个接口，用于创建相关和依赖对象的家族，而不需要明确制定具体类     // 原则：依赖抽象，不要依赖具体类     // 抽象工厂使用组合，对象的创建被实现在工厂接口所暴露出的方法中         // 这是一些原料      public   abstract   class  肉 { }     public   class  肥肉 : 肉 { }     public   class  瘦肉 : 肉 { }     public   abstract   class  蔬菜 { }     public   class  白菜 : 蔬菜 { }     public   class  土豆 : 蔬菜 { }     public   abstract   class  油 { }     public   class  菜籽油 : 油 { }     public   class  金龙鱼油 : 油 { }        // Pizza抽象类      public   abstract   class  pizza    {         public   string  name {  get ;  set ; }         public  肉 rou;         public  蔬菜 shucai;         public  油 you;         public   abstract   void  prepare();    }     // 一种Pizza      public   class  pizzaA : pizza    {         public  IPizzaIngredientFactory factory;         public  pizzaA(IPizzaIngredientFactory factory)        {             this .factory  =  factory;            prepare();        }         // 每种Pizza都有不同的做法          public   override   void  prepare()        {             // 原料从工厂得来!             rou  =  factory.Createyrou();            shucai  =  factory.Createyshucai();            you  =  factory.Createyyou();        }    }     // 另外一种不要蔬菜的Pizza      public   class  pizzaB : pizza    {         public  IPizzaIngredientFactory factory;         public  pizzaB(IPizzaIngredientFactory factory)        {             this .factory  =  factory;            prepare();        }         public   override   void  prepare()        {            rou  =  factory.Createyrou();            you  =  factory.Createyyou();        }    }     // 原料工厂接口      public   interface  IPizzaIngredientFactory    {        肉 Createyrou();        蔬菜 Createyshucai();        油 Createyyou();    }     // 一个成都风味的原料工厂      public   class  AIngredientFactory:IPizzaIngredientFactory    {         public  肉 Createyrou()        {             return   new  瘦肉();        }         public  蔬菜 Createyshucai()        {             return   new  白菜();        }         public  油 Createyyou()        {             return   new  菜籽油();        }    }     // Pizza店抽象类      public   abstract   class  pizzaStore    {         protected   abstract  pizza CreatePizza( string  type);         public  pizza OrderPizza( string  type)        {            pizza p  =  CreatePizza(type);             return  p;        }    }     // 一个成都的Pizza店      public   class  StoreA : pizzaStore    {         protected   override  pizza CreatePizza( string  type)        {            pizza p  =   null ;            IPizzaIngredientFactory factory  =   new  AIngredientFactory();             if  (type  ==   " A " )            {                p  =   new  pizzaA(factory);                p.name  =   " 瘦肉Pizza " ;            }             else   if  (type  ==   " B " )            {                p  =   new  pizzaB(factory);                p.name  =   " 不要瘦肉的Pizza " ;            }             return  p;        }    }     class  Program    {         static   void  Main( string [] args)        {            pizzaStore storeA  =   new  StoreA();            pizza p  =  storeA.OrderPizza( " A " );            Console.WriteLine(p.name);            Console.Read();        }    }

 

转载于:https://www.cnblogs.com/renjuwht/archive/2010/01/22/1654519.html