---

type.hh

/*
*  Name:      type.hh
*  Author:    Rafael Jesus Alcantara Perez
*  Summary:   UESQLC base SQL data type
*  Date:      $Date: 2003/10/06 13:21:35 $
*  Revision:  $Revision: 1.1 $
*
*  Copyright (C) 2002  Rafael Jesus Alcantara Perez <rafa@dedalo-ing.com>
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
*  MA 02111-1307, USA.
*/

#ifndef _UESQL_TYPE__
#define _UESQL_TYPE__

#include <mpcl/text/string.hh>


namespace uesqlc
{

  using std::string;

  class IType
  {

    private:

      bool   gIsNull;

      mutable char*   pcBuffer;


    public:

      typedef
        unsigned int
        size_type;


    protected:

      //
      //  C O N S T R U C T O R S
      //

      void setNull (bool gIS_NULL)
      {
        gIsNull = gIS_NULL;
      }


    public:
      
      //
      //  C O N S T R U C T O R S
      //

      IType (void)      :
        gIsNull  (true) ,
        pcBuffer (NULL) {}

      virtual ~IType (void)
      {
        if ( pcBuffer )
        {
          delete [] pcBuffer;
        }
      }
      
      void updateFromBuffer (void)
      {
        if ( pcBuffer )
        {
          set ((const char*) pcBuffer);
        }
      }

      virtual void set (const char* pkcVALUE) = 0;
      
      virtual void set (const string& rkyVALUE) = 0;


    public:

      //
      //  S E L E C T O R S
      //

      virtual mpcl::text::TString get (void) const = 0;

      void* getBuffer (const size_type kzSIZE) const
      {
        if ( pcBuffer )
        {
          delete [] pcBuffer;
        }
        pcBuffer = new char [kzSIZE + 1];
        return pcBuffer;
      }

      bool isNull (void) const
      {
        return gIsNull;
      }

  };  // class IType
  
}  // namespace uesqlc


#endif  // not _UESQL_TYPE__

---