Use one's own class together with OCAF?

Hi,
This is a very simple sample of my idea. for short representation, I cut the .cpp file, wish you can understandard it.

// This is the root class of basic type, inherit from CObject for the type object
// can be dynamic created in runtime.
class CBasicTypeRoot : public CObject
{
DECLARE_DYNCREATE(CBasicTypeRoot);
public:
CBasicTypeRoot();
~CBasicTypeRoot();

protected:
void setLabel(const TDF_Label& label){
m_label = label;
}
protected:
TDF_Label m_label;
};

// This is represent the int basic data type.
class CInteger : public CBasicTypeRoot
{
DECLARE_DYNCREATE(CInteger)
public:
CInteger();
~CInteger();

public:
void setValue(Standard_Integer newValue){
m_int = newValue;
}
Standard_Integer getValue() const{
return m_int;
}

protected:
Standard_Integer m_int;
};

// and so on, same class definition of Standard_Real, Standard_CString, etc.

// Now I can define my "big" object.
class CPeople : public CObject
{
DECLARE_DYNCREATE(CPeople);
public:
CPeople();
~CPeople();

public:
void setAge(const CInteger& age){
m_iAge = age;
}
void setName(const CStr& name){
m_sName = name;
}
void setLabel(const TDF_Label& label){
m_label = label;
}
protected:
CInteger m_iAge;
CStr m_sName;

TDF_Label m_label;
};

class CAMan:public CPeople
{
DECLARE_DYNCREATE(CAMan)
public:
setMarried(const CBool& bMarried){
m_bMarried = bMarried;
}

protected:
CBool m_bMarried;
};

CBool, CStr is same as CInteger, of cource, for real working there must be adding more functionity in them.

Thus, very "big" object's label is mother label of data member's, all of the data member has it own label.The tree structure of your data is same as the label's structure.

Best Regards.
Lugi.C