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03_factorymethod.cpp
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#include <iostream>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string>
#include <algorithm>
#include <vector>
//######################################
class Iproduct
{
public:
Iproduct(){};
virtual ~Iproduct(){};
virtual void UseProduct(){};
};
class Cproduct1 : public Iproduct
{
public:
Cproduct1(){};
virtual ~Cproduct1(){};
void UseProduct(){
std::cout << __func__ << ":Cproduct1 is used." << std::endl;
}
};
class Cproduct2 : public Iproduct
{
public:
Cproduct2(){};
virtual ~Cproduct2(){};
void UseProduct(){
std::cout << __func__ << ":Cproduct2 is used." << std::endl;
}
};
//######################################
class Ifactory
{
public:
Ifactory(){};
virtual ~Ifactory(){};
virtual Iproduct* create(){};
};
class Cfactory1 : public Ifactory
{
private:
Cfactory1(){
};
public:
static Ifactory* m_instance;
virtual ~Cfactory1(){};
static Ifactory* getInstance(){
if (m_instance == 0)
m_instance = new Cfactory1();
return m_instance;
}
Iproduct* create(){
return new Cproduct1();
}
};
class Cfactory2 : public Ifactory
{
private:
Cfactory2(){};
public:
static Ifactory* m_instance;
virtual ~Cfactory2(){};
static Ifactory* getInstance(){
if (m_instance == 0)
m_instance = new Cfactory2();
return m_instance;
}
Iproduct* create(){
return new Cproduct2();
}
};
Ifactory* Cfactory1::m_instance = 0;
Ifactory* Cfactory2::m_instance = 0;
class FactoryMethod : public Ifactory
{
private:
Ifactory* m_factory[2];
Iproduct* m_product[2];
public:
FactoryMethod(){
m_factory[0] = Cfactory1::getInstance();
m_product[0] = m_factory[0]->create();
m_factory[1] = Cfactory2::getInstance();
m_product[1] = m_factory[1]->create();
};
virtual ~FactoryMethod(){};
void UseProduct(){
for (int i = 0; i < 2; i++)
{
m_product[i]->UseProduct();
}
}
};
//######################################
int main(int argc, char const *argv[]) {
FactoryMethod fm;
fm.UseProduct();
return 0;
}