Thank God this is automatic...

The code to store/retrieve the data is generated automatically:

/* C++ header file: Objectivity/DB DDL version 5.1.0 */

#ifndef CUBE_H

#define CUBE_H

#ifdef OO_DDL_TRANSLATION

#pragma ooddlout "cube.ddl"

class opiDummyDeclaration;

#endif

#ifndef OO_H

#include <oo.h>

#endif

#line 2 "cube.ddl"

#define __cube

#include "body.h"

#ifndef CUBE_REF_H

#include "cube_ref.h"

#endif

#line 6

class cube : public body {

public: cube(float);

virtual char *identify();

virtual float GetVolume();

virtual float GetSurface();

protected: float length;

public:

#ifndef OO_DDL_TRANSLATION

virtual ooTypeNumber ooGetTypeN() const;

virtual char* ooGetTypeName() const;

ooBoolean ooIsKindOf(ooTypeNumber typeN) const;

ooHandle(cube)& ooThis(ooHandle(cube)& objH,

ooMode aMode = oocNoOpen) const

{

return *ooReinterpretCast(ooHandle(cube) *, &(this->ooObj::ooThis(objH, aMode)));

}

ooHandle(cube) ooThis(ooMode aMode = oocNoOpen) const;

void *operator new(size_t, const ooHandle(ooObj) &nearH = oovTopDB);

void *operator new(size_t, const ooId& nearId);

void *operator new(size_t, const ooObj *nearObj);

void *operator new(size_t,

const ooHandle(ooObj) &nearH,

const char *typeName);

#ifdef OO_PLACEMENT_DELETE

inline void

operator delete(void * object,

const ooHandle(ooObj) & ) {

ooObj::operator delete(object);

}

inline void

operator delete(void * object,

const ooId & ) {

ooObj::operator delete(object);

}

inline void

operator delete(void * object,

const ooObj * ) {

ooObj::operator delete(object);

}

inline void

operator delete(void * object,

const ooHandle(ooObj) & ,

const char * ) {

ooObj::operator delete(object);

}

#endif

#ifdef OO_ODMG

void *operator new(size_t size,

d_Database *odmg_db);

void *operator new(size_t size,

d_Database *odmg_db,

const char *);

#ifdef OO_PLACEMENT_DELETE

inline void

operator delete(void * object,

d_Database * ) {

ooObj::operator delete(object);

}

inline void

operator delete(void * object,

d_Database * odmg_db,

const char * ) {

ooObj::operator delete(object);

}

#endif

#endif

static const ooTypeNumber opiTypeN;

static void ooAssocRegister();

ooRef(cube)& ooThis(ooRef(cube)& objId, ooMode aMode = oocNoOpen) const;

cube(ooInternalObj iobj);

#endif /* !defined(OO_DDL_TRANSLATION) */

};

static ooBoolean opiReferenceFile_CUBE_H = opiReferenceTypeNumber(ooTypeN(cube));

#endif /* !defined(CUBE_H) */

That’s just the header file!

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