学步园

UML:

Sample:

Prototype  ()

• declares an interface for cloning itself
• 定义复制对象的接口

ConcretePrototype  ()

• implements an operation for cloning itself
• 实现复制自己的操作

Client  ()

• creates a new object by asking a prototype to clone itself
• 通过访问prototype来创建一个新的对象来复制

Prototype:

 

 1     abstract  class Prototype
    {
        private string _id;
        public Prototype(string id)
        {
            this._id = id;
        }
        public string Id
        {
            get { return _id; }
        }
        public abstract Prototype Clone();
    }

 

ConcretePrototype1:

 

 1    class ConcretePrototype1:Prototype
    {
        public ConcretePrototype1(string id)
            : base(id)
        { }

        public override Prototype Clone()
        {
            return (Prototype)this.MemberwiseClone();
        }
    }

 

ConcretePrototype2:

 1     class ConcretePrototype2
    {
        public ConcretePrototype2(string id)
            : base(id)
        { }
        public override Prototype Clone()
        {
            return (Prototype)this.MemberwiseClone();
        }
    }

 

Program:

1            #region Prototype
            ConcretePrototype1 p1 = new ConcretePrototype1("I"); 
            ConcretePrototype1 c1 = (ConcretePrototype1)p1.Clone(); 
            Console.WriteLine("Cloned: {0}", c1.Id); 
            ConcretePrototype2 p2 = new ConcretePrototype2("II"); 
            ConcretePrototype2 c2 = (ConcretePrototype2)p2.Clone(); 
            Console.WriteLine("Cloned: {0}", c2.Id);  
            Console.ReadKey(); 
            #endregion

 

原型模式就是请求一个原型来克隆对象自身