RecItem.hpp

/* RecItem.hpp */
/* $Id: RecItem.hpp,v 1.12 2004/12/10 09:19:08 vlad Exp $ */
#ifndef __RecItem_hpp
#define __RecItem_hpp

#include <mix/Types.h>
#include <mix/RecDef.hpp>
#include <mix/AnyValue.hpp>


/***********************************************************************
 ** Record with one instance of data.
 **
 ** Each field has a cell for storing data.  The class allows access
 ** to each field data in arbitrary ways via AnyValue.
 ***********************************************************************/

class RecList;

class RecItem : public RecDef
{
  friend class  RecList;

public:

  RecItem (const RecDef& rdef);

  RecItem (const RecItem& r);

  RecItem (InputStream& ist);

  RecItem (RecDef* prdef, void* recdata);

  /* Attach the record object to another alien data location.  BE
     CAREFUL!!! */
  void      attach (void* recdata);


  virtual ~RecItem ();

  RecItem&  operator= (const RecItem& r);


  /*
   * Access to record data
   */

  virtual AnyValue&     value (int dmn_i);

  /* Call the value(n2i(dname)) */
  AnyValue&     value (const char* dname);

  virtual const AnyValue&   get_value (int dmn_i) const;

  const AnyValue&       get_value (const char* dname) const;

  virtual void      get_value (int dmn_i, AnyValue& av) const;

  void          get_value (const char* dname,
                   AnyValue& av) const;

  virtual void      set_value (int dmn_i, const AnyValue& av);

  void          set_value (const char* dname,
                   const AnyValue& av);


  virtual void      set_row_data (const void* row_data);

  virtual void*     get_row_data () const;

  virtual void      copy_row_data (const RecDef& rdef,
                       void* row_data) const;


  virtual void      add_domain (const DomainDef& dmn);


  virtual void      serialize (OutputStream& ost) const;

  virtual void      deserialize (InputStream& ist);

protected:

  bool      own_memory;

  void      *ptr_rec;

  AnyValue  **av;

};


/*
 * INLINE IMPLEMENTATIONS
 */

inline AnyValue&
RecItem::value (const char* dname)
{
  return value(n2i(dname));
}


inline const AnyValue&
RecItem::get_value (const char* dname) const
{
  return get_value(n2i(dname));
}


inline void
RecItem::get_value (const char* dname, AnyValue& av) const
{
  get_value(n2i(dname), av);
}


inline void
RecItem::set_value (const char* dname, const AnyValue& av)
{
  set_value(n2i(dname), av);
}


#endif /* RecItem.hpp */