利用RealProxy，强化AOP，在”牛粪“的周围插上”鲜花“

有个接口

    interface I牛粪
    {
        void 吃();
    }

 

 

有个接口的实现

 

    class 牛粪 : I牛粪
    {
        public void 吃()
        {
            Console.WriteLine("吃 牛粪 拉！");
        }
    }

 

 

我现在需要在这个吃的动作周围加上一大堆的鲜花，还有围观的群众。如果使用传统的编程方法，得到：

        public void Test001()
        {
            牛粪 sheet = new 牛粪();

            for (int i = 0; i < 3; i++)
            {
                Console.WriteLine("鲜花");
            }

            Console.WriteLine("围观群众");

            sheet.吃();

            Console.WriteLine("围观群众");

            for (int i = 0; i < 3; i++)
            {
                Console.WriteLine("鲜花");
            }
        }

 

 

如果要还有添加”喝 “，“拉”之类的，怎么办？如果不同动作的入口参数也不一样，怎么办？重复的方法不能写很多次。于是使用代理基础。

    class Mock<T> : RealProxy
    {
        T instance;
        public delegate void OnMock(IMockMethod method);
        public event OnMock OnMockMethod;
        class MockMethod : IMockMethod
        {
            T instance;
            IMethodCallMessage methodCall;
            object result;
            public MockMethod(T instance, IMethodCallMessage methodCall)
            {
                this.instance = instance;
                this.methodCall = methodCall;
            }
            public void Execute()
            {
                result = methodCall.MethodBase.Invoke(instance, methodCall.InArgs);
            }
            public object Result
            {
                get
                {
                    return result;
                }
            }
        }

        public Mock(T instance)
            : base(typeof(T))
        {
            this.instance = instance;
        }

        public override IMessage Invoke(IMessage msg)
        {
            IMethodCallMessage methodCall = msg as IMethodCallMessage;

            MockMethod mock = new MockMethod(this.instance, methodCall);

            this.OnMockMethod(mock);

            return new ReturnMessage(mock.Result, null, 0, null, methodCall);
        }
        public T Value
        {
            get
            {
                return (T)this.GetTransparentProxy();
            }
        }
        public bool Result
        {
            get
            {
                return false;
            }
        }
    }

    interface IMockMethod
    {
        void Execute();
    }

 

 

最后调用是：

        public void test222()
        {
            Mock<I牛粪> mock = new Mock<I牛粪>(new 牛粪());
            mock.OnMockMethod += new Mock<I牛粪>.OnMock(mock_OnMockMethod);
            mock.Value.吃();
        }

        void mock_OnMockMethod(IMockMethod method)
        {
            for (int i = 0; i < 3; i++)
            {
                Console.WriteLine("鲜花");
            }
            Console.WriteLine("围观群众");
            method.Execute();
            Console.WriteLine("围观群众");

            for (int i = 0; i < 3; i++)
            {
                Console.WriteLine("鲜花");
            }
        }

 

 

不知道这个技术算不算新。