标签：
原型模式
创建型模式
用来处理对象的构造，通过克隆的方法复制自身，动态的修改对象在运行时的状态，从而降低new带来的性能消耗
从复制简历开始说起
1.0代码
public class Resume { private string name; private string sex; private int age; private string timeArea; private string company; public Resume(string name) { this.name = name; } public void SetPersonalInfo(string sex, int age) { this.sex = sex; this.age = age; } public void SetWorkExperience(string timerArea, string company) { this.company = company; this.timeArea = timerArea; } public void Display() { Console.WriteLine("{0} {1} {2}", name, sex, age); Console.WriteLine("工作经历：{0} {1}", timeArea, company); } } 客户端的调用如下 Resume a = new Resume("大鸟"); a.SetPersonalInfo("男", 29); a.SetWorkExperience("1998-2000", "XX公司"); Resume b = new Resume("大鸟"); b.SetPersonalInfo("男", 29); b.SetWorkExperience("1998-2000", "XX公司"); Resume c = new Resume("大鸟"); c.SetPersonalInfo("男", 29); c.SetWorkExperience("1998-2000", "XX公司"); a.Display(); b.Display(); c.Display(); 稍做修改 Resume a = new Resume("大鸟"); a.SetPersonalInfo("男", 29); a.SetWorkExperience("1998-2000", "XX公司"); Resume b = a; Resume c = a; a.Display(); b.Display(); c.Display();
2.0 原型模式出现
结构类图如下
代码如下
public abstract class Prototype { private string id; public Prototype(string id) { this.id = id; } public string ID { get { return id; } } public abstract Prototype Clone(); } public class ClassPrototype1 : Prototype { public ClassPrototype1(string id) : base(id) { } public override Prototype Clone() { return (Prototype)this.MemberwiseClone();//对自身进行复制 } }
客户端
ClassPrototype1 c1 = new ClassPrototype1("1000");
ClassPrototype1 c2 = (ClassPrototype1)c1.Clone();
Console.WriteLine("{0}",c2.ID);
3.0 使用.NET中已经有的接口ICloneable
public object Clone()
{
return (object)this.MemberwiseClone();
}
客户端如下
Resume a = new Resume("大鸟"); a.SetPersonalInfo("男", 29); a.SetWorkExperience("1998-2000", "XX公司"); Resume b = (Resume)a.Clone(); a.SetPersonalInfo("男", 28); a.SetWorkExperience("1998-2006", "YY公司"); Resume c = (Resume)a.Clone(); a.SetPersonalInfo("男", 20); a.SetWorkExperience("1998-2006", "ZZ公司"); a.Display(); b.Display(); c.Display();
好处没有了对象的new 只通过复制的方法动态的修改 对应运行的状态
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原文地址：http://www.cnblogs.com/Sky-cloudless/p/4397829.html
