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();
}
}
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#region IPrototype<UserInfo> Members
public UserInfo Clone() {
return this.MemberwiseClone() as UserInfo;
}
public UserInfo DeepCopy() {
using (MemoryStream ms = new MemoryStream()) {
XmlSerializer xz = new XmlSerializer(this.GetType());
xz.Serialize(ms, this);
ms.Seek(0, SeekOrigin.Begin);
return xz.Deserialize(ms) as UserInfo;
}
}
#endregion
}
}
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(195)
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Design Pattern