設計模式之原型模式（Prototype）（五）

時間 2019-11-17

標籤設計模式原型 prototype 欄目微服務简体版

原文原文鏈接

動機

在軟件系統中，常常面臨着「某些結構複雜的對象」的建立工做；因爲需求的變化，這些對象常常面臨着劇烈的變化，可是它們卻擁有比較穩定一致的接口。設計模式

如何應對這種變化？如何向「客戶程序（使用這些對象的程序）」隔離出「這些易變對象」，從而使得「依賴這些易變對象的客戶程序」不隨着需求改變而改變？ide

意圖

使用原型實例指定建立對象的種類，而後經過拷貝這些原型來建立新的對象工具

示意圖

原型設計模式代碼實現

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;this

namespace 原型模式
{
class Program
{
static void Main(string[] args)
{
Computer computer = new Computer();
computer.name = "Dell.X5124";
computer.age = 5;
computer.factory = new Factory() { name = "Dell" };
computer.factory.manage = new Manage(){ManageName = "Nick"};spa

Computer C1 = (computer as ICloneable).Clone() as Computer;
C1.name = "Dell.X2546";
C1.age = 6;
C1.factory.name = "Sam";
C1.factory.manage.ManageName = "jack";
Console.WriteLine(computer);
Console.WriteLine(C1);
Console.ReadLine();

}
}設計

public class Computer:ICloneable
{
public string name { get; set; }
public int age { get; set; }指針

public Factory factory { get; set; }orm

public object Clone()
{
//return this.MemberwiseClone();//淺複製對象

//如下實現深Copy接口

var _Instace = this.MemberwiseClone() as Computer;
_Instace.factory = (this.factory as ICloneable).Clone() as Factory;
return _Instace;

}

public override string ToString()
{
return string.Format("電腦名字{0}，使用年限{1}，工廠名字{2},工廠管理者{3}",this.name,this.age,this.factory.name,this.factory.manage.ManageName);
}
}

public class Factory:ICloneable
{
public string name { get; set; }
public Manage manage { get; set; }

public object Clone()//深Copy
{
var _Instace = base.MemberwiseClone() as Factory;
_Instace.manage = (this.manage as ICloneable).Clone() as Manage;
return _Instace;
}
}

public class Manage:ICloneable
{
public string ManageName { get; set; }

public object Clone()//淺Copy
{
return base.MemberwiseClone();
}
}

}