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d_Ref_Dyna.h

Go to the documentation of this file.

#ifndef d_Ref_Dyna_h
#define d_Ref_Dyna_h 1

//------------------------------------------------------------------------------
#include "d_Ref_Any.h"
#include "d_Variant.h"

//------------------------------------------------------------------------------
class _ODLL d_Object;
class _ODLL d_Binary;

// Expresses relationships to objects.
//
// This class represents a generic reference to a persistent object. Use d_Ref
// class for reference of knew type.
// 
// It can be used as attribute of a class for 1 to 1 relationship between
// objects of the same or different class.
// 
// If it's used as template-argument of a class container in a class attribute
// can express 1 to N relationships.
//
// LOCATION:
// d_Ref_Dyna.h
//
// USAGE:
// d_Ref_Dyna   <property-name>;
// 
// Where:
// <PROPERTY-NAME>:     NAME OF PROPERTY
//
// EXAMPLES:
// class Invoice : public d_Object
// {
//   // Relationship 1-1 to customer or supplier
//   d_Ref_Dyna                 customer_or_supplier;
//
//   // Relationship 1-N to product
//   d_Set< d_Ref_Dyna >        products;
// };
//
// // Reference to Invoice object
// d_Ref_Dyna<Invoice>  myInvoice;
//
// SEE ALSO:
// d_Ref, d_Object
//
// ODMG:
// Extension

class _ODLL d_Ref_Dyna : public d_Ref_Any 
{
  public:
    // Internal.
    bool      setMember( const char* iName, const d_Variant& iValue );

    // Internal.
    bool      getMember( const char* iName, d_Variant& ioValue ) const;
};
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------

#endif

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