Template Method & Factory Method Pattern
#include <iostream>
#include <stdio.h>
class cComputer // abstract class (추상클래스)
{
public:
enum{
NOTEBOOK = 1,
DESCTOP
};
virtual void getCategory() = 0;
};
class cNotebookComputer : public cComputer
{
public:
void getCategory()
{
printf("Notebook Compuer\n");
}
};
class cDesctopComputer : public cComputer
{
public:
void getCategory()
{
printf("Desctop Computer\n");
}
};
class cComputerManager // Factory Method
{
public:
static cComputer* getInstance( int _category )
{
cComputer *computer = NULL;
if( _category == computer->NOTEBOOK )
computer = new cNotebookComputer();
else if ( _category == computer->DESCTOP )
computer = new cDesctopComputer();
return computer;
}
};
void main()
{
cComputer *computer;
int input = NULL;
printf("1. Notebook Computer\n2. Desctop Compuer\n");
scanf("%d", &input);
/*****************************
Template Method Pattern
*****************************/
if( input == 1 )
computer = new cNotebookComputer();
else if( input == 2 )
computer = new cDesctopComputer();
/*****************************
Factory Method Pattern
=> Factory Method : 객체를 생성하는 역할을 하는 메소드
이제부터 이 메소드를 호출하는 것으로 객체를 생성할 수 있으며, 만일 추가적인 객체가 발생한다면
해당 메소드를 수정하는 것으로 작업이 끝남. (ex)TabletComputer의 추가
*****************************/
computer = cComputerManager::getInstance(input);
computer->getCategory();
delete computer;
}