Flyweight 设计模式

#include<iostream>
#include<string>
#include<vector>
using namespace std;
class Flyweight
{
public:
	virtual ~Flyweight(){};
	virtual void Operation(const string& extrinsicState) {};
	string GetintrinsicSate() {return _intrinsicState;};
protected:
	Flyweight(string intrinsicState) { this->_intrinsicState=intrinsicState;};//注意在这里Protected
private:
	string _intrinsicState;
};
class ConcreteFlyweight: public Flyweight
{
public:
	ConcreteFlyweight(string intrinsicSate):Flyweight(intrinsicSate) {};
	virtual ~ConcreteFlyweight() {};
	virtual void Operation(const string& extrinsicState)
	{
		cout<<GetintrinsicSate()<<endl;
		cout<<extrinsicState<<endl; 
	}
};
	class UnshareConcreteFlyweight: public Flyweight
	{
	public:
		UnshareConcreteFlyweight(string extr):Flyweight(extr){};
		virtual ~UnshareConcreteFlyweight(){};
		virtual void Operation(const string& extrinsicState)
		{
			cout<<extrinsicState<<endl;
		}

	};
class FlyweightFactory
{
public:
	FlyweightFactory(){};
	~FlyweightFactory(){};
	Flyweight* GetFactory(string key)
	{
		vector<Flyweight*>::iterator iter=this->_fly.begin();
		for(;iter!=this->_fly.end();++iter)
	{	if((*iter)->GetintrinsicSate()==key)
			{
				cout<<"Object have ready"<<endl;
				return *iter;
			}
	}
		Flyweight* fly=new ConcreteFlyweight(key); // 注意是ConCreteFlyweight
		this->_fly.push_back(fly);
		return fly;	
	}
private:
		vector<Flyweight*> _fly;
	};
int main(int argc, char* argv[])
{
	FlyweightFactory* fc=new FlyweightFactory();
	Flyweight* ef=fc->GetFactory("Hello");
	Flyweight* cc=fc->GetFactory("Moargan");
	Flyweight* cd=fc->GetFactory("Hello");
      cd->Operation("job");

	  Flyweight* fcd=  new UnshareConcreteFlyweight("My English");
	  fcd->Operation("test");
	  return 0;
}