VS 2008

当我们需要实例化一个类的多个实例，并且实例化的代价比较昂贵的时候，可以使用原型模式。

1. 模式UML图

2. 应用

IPrototype.cs

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

namespace DesignPattern.Prototype.BLL {

    public interface IPrototype<T> {

        T Clone();
        T DeepCopy();
    }
}

UserInfo.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml.Serialization;

namespace DesignPattern.Prototype.BLL {

    [Serializable]
    public class UserInfo : IPrototype<UserInfo> {

        public int UserId {
            get;
            set;
        }
        public string UserName {
            get;
            set;
        }
        public PetInfo Pet {
            get;
            set;
        }

        IPrototype Members
    }
}

PetInfo.cs

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

namespace DesignPattern.Prototype.BLL {

    [Serializable]
    public class PetInfo {

        public string PetName {
            get;
            set;
        }
    }
}

Client

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DesignPattern.Prototype.BLL;

namespace DesignPattern.Prototype {
    class Program {
        static void Main(string[] args) {
            UserInfo u = new UserInfo() {
                UserId = 1,
                UserName = "guozhijian",
                Pet = new PetInfo() {
                    PetName = "nana"
                }
            };
            UserInfo uCopy = u.Clone();

            Console.WriteLine("{0},{1},{2}", uCopy.UserId.ToString(), uCopy.UserName, uCopy.Pet.PetName);

            UserInfo uDeepCopy = u.DeepCopy();
            uDeepCopy.Pet.PetName = "sasa";
            Console.WriteLine("{0},{1},{2}", uDeepCopy.UserId.ToString(), uDeepCopy.UserName, uDeepCopy.Pet.PetName);

            Console.WriteLine(u.Pet.PetName);


        }
    }
}

Output

posted on 2008-03-14 21:48  Tristan(GuoZhijian)  阅读(595)  评论()    收藏  举报