我必须序列化一个CList
基类和派生类。我怎样才能做到这一点。
typedef CList<Student*, Student*> StVec;
class Student : public CObject
{
public:
DECLARE_SERIAL(Student);
Student();
Student(Student& s);
Student(CString _name, CString _last, int _age);
virtual ~Student(void);
virtual void cin();
virtual void cout();
virtual void Serialize(CArchive& ar);
static Student* FromInput();
inline const CString GetName(){return name;}
inline const CString GetLastName(){return last_name;}
inline const int GetAge(){return age;}
virtual inline Student& operator=( const Student &s )
{
name = s.name;
last_name = s.last_name;
age = s.age;
return *this;
}
protected:
CString name;
CString last_name;
int age;
};
class Warden : public Student
{
protected:
virtual void Serialize(CArchive& ar);
UINT salary;
};
class Group : public CObject
{
public:
DECLARE_SERIAL(Group);
enum FindType { First = 0, Last, All};
typedef bool (*StudentsFindCallback) (Student* student, void* condition);
Group(){ name = _T("Default Group"); }
Group(CString _name);
Group(Group& s);
~Group();
void CreateUser();
void ShowUsers();
//StVecOfIt FindUser(StudentsFindCallback f, void* condition, FindType ft);
inline Student* getStudent(POSITION pos) {return students->GetNext(pos); }
inline void DeleteUser(POSITION it){ students->RemoveAt(it); }
virtual void Serialize(CArchive& ar);
void Clean();
/*static bool FindbyName(Student* student, void* condition);
static bool FindbyLastName(Student* student, void* condition);
static bool FindbyAge(Student* student, void* condition);*/
virtual inline Group& operator=( const Group &s )
{
name = s.name;
students = s.students;
return *this;
}
protected:
CString name;
StVec* students;
};
void Student::Serialize(CArchive& ar)
{
CObject::Serialize( ar );
if (ar.IsStoring())
{
ar.SerializeClass(Student::GetRuntimeClass());
ar << name << last_name << age;
}
else
{
ar.SerializeClass(Student::GetRuntimeClass());
ar >> name >> last_name >> age;
}
}
void Group::Serialize(CArchive& ar)
{
ar.SerializeClass(RUNTIME_CLASS(Group));
if (ar.IsStoring())
{
ar << (int)students->GetCount();
POSITION pos = students->GetHeadPosition();
while(pos != NULL)
{
Student* student = students->GetNext(pos);
student->Serialize(ar);
}
}
else
{
Clean();
int count = 0;
ar >> count;
for(INT_PTR i = 0; i < count; ++i)
{
Student* st = new Student();
st->Serialize(ar);
students->AddTail(st);
}
}
}
我在codeproject上找到了一篇文章,但我根本无法理解。
当然,我可以添加一个指示类类型的标志。我也可以序列化到派生类,如果派生属性为空static_cast
,则可以将其派生到基类。或者我正在考虑使用CArchive::ReadObject
或CArchive::ReadClass
加载类,但还有其他方法吗?