Цитата(mes @ 18.6.2009, 21:32  ) | | а нельзя ли пояснения к этому ? |
я это так представляю:
main.cpp
| Код |
#include "Composition.h"
#include "IdDateCompositor.h"
#include "IdPasswordTime.h"
#include "LoginTimeCompositor.h"
#include "user_info.h"
int main()
{
user_info user[3] = {
{1, "ivan", "pass33", 15},
{2, "zina", "kakad3", 19},
{3, "zhora", "dlsfd", 33}
};
Composition *id_date = new Composition(new IdDateCompositor);
bool isEq = id_date->Compare(user[0], user[1]);
Composition *id_password_time = new Composition(new IdPasswordTime);
isEq = id_password_time->Compare(user[1], user[2]);
Composition *login_time = new Composition(new LoginTimeCompositor);
isEq = login_time->Compare(user[0], user[2]);
return 0;
}
|
LoginTimeCompositor.h
| Код |
#ifndef _LOGINTIME_COMPOSITOR_H_
#define _LOGINTIME_COMPOSITOR_H_
class LoginTimeCompositor : public Compositor {
public:
LoginTimeCompositor() {}
virtual bool Equal(user_info &lhs, user_info &rhs) {
return (lhs.login == rhs.login && lhs.time == rhs.time);
}
};
#endif // _LOGINTIME_COMPOSITOR_H_
|
Composition.h
| Код |
#ifndef _COMPOSITION_H_
#define _COMPOSITION_H_
class Compositor;
struct user_info;
class Composition {
public:
Composition(Compositor *ptr) : _compositor(ptr) {}
bool Compare(user_info&, user_info&);
private:
Compositor *_compositor;
};
#endif // _COMPOSITION_H_
|
Compositor.h
| Код |
#ifndef _COMPOSITOR_H_
#define _COMPOSITOR_H_
class Compositor {
public:
virtual bool Equal(user_info &lhs, user_info &rhs) = 0;
protected:
Compositor(){}
};
#endif // _COMPOSITOR_H_
|
IdDateCompositor.h
| Код |
#ifndef _IDDATE_COMPOSITOR_H_
#define _IDDATE_COMPOSITOR_H_
#include "Compositor.h"
#include "user_info.h"
class IdDateCompositor : public Compositor {
public:
IdDateCompositor(){}
virtual bool Equal(user_info &lhs, user_info &rhs) {
return (lhs.user_id == rhs.user_id && lhs.time == rhs.time);
}
};
#endif // _IDDATE_COMPOSITOR_H_
|
IdPasswordTime.h
| Код |
#ifndef _IDPASSWORDTIMECOMPOSITOR_H_
#define _IDPASSWORDTIMECOMPOSITOR_H_
class IdPasswordTime : public Compositor {
public:
IdPasswordTime() {}
virtual bool Equal(user_info &lhs, user_info &rhs) {
return (lhs.user_id == rhs.user_id && lhs.password == rhs.password &&
lhs.time == rhs.time);
}
};
#endif // _IDPASSWORDTIMECOMPOSITOR_H_
|
user_info.h
| Код |
#ifndef _USER_INFO_H
#define _USER_INFO_H
struct user_info {
int user_id;
char *login;
char *password;
int time;
};
#endif // _USER_INFO_H
|
Composition.cpp
| Код |
#include "Composition.h"
#include "Compositor.h"
bool Composition::Compare(user_info &lhs, user_info &rhs) {
return _compositor->Equal(lhs, rhs);
}
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