cdrio.h

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// OSB library ********************************************* -*- C++ -*-
/*
  AUTHOR(S): Darryl Kang (dk)
             Stephan Broennimann (vb)

  RCS information
   $Name: OSB_060808 $
   $Revision: 1.17 $

  License
   OSB rating and billing library for communication networks
   Copyright (C) 2004, 2005, 2006  OSB systems

   This file may be distributed and/or modify under the terms of the
   GNU General Public License (GPL) as published by the Free Software
   Foundation which is provided in the file LICENSE.GPL included in the
   packaging of this file.

   The file 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.

   Holders of a OSB Commercial License may use this file under the terms
   and conditions of this commercial license.
 */
#ifndef _CDRIO_H_
#define _CDRIO_H_

// *********************************************************************
// included header files
// + standard includes
#include <iosfwd>
#include <vector>
#include <memory>

// + local headers

// *********************************************************************
// class declarations
namespace OSB_LIB {
    class Asn1Writer;
    class CdrList;
    class BsPage;
    template<typename T> class Id;
}

// *********************************************************************
// namespace extensions
namespace OSB_LIB {

// *********************************************************************
// class definitions

    // *****************************************************************
    // class CdrIo
    class CdrIo {
    public:
        virtual ~CdrIo();

        virtual std::auto_ptr<CdrIo> clone() const = 0;

        virtual const Id<BsPage>& pageId() const = 0;

        virtual void read(
            CdrList& dest
        ) = 0;

        virtual void prepareWrite() = 0;

        virtual void write(
            const CdrList&    cdrs,
                  Asn1Writer& writer
        ) = 0;

        virtual void replace(
            const CdrList& newCdrs,
                  Asn1Writer& writer
        ) = 0;

        virtual bool commitChanges() = 0;

        virtual bool undoChanges() = 0;

        virtual bool remove() = 0;

    public:
        static void setBaseDir(const std::string& dir);
        static std::string baseDir_;

        static long maxFileSize_;
    };                                  // class CdrIo

    std::auto_ptr<CdrIo> makeCdrIo(const Id<BsPage>& pageId);

}                                       // namespace OSB_LIB
#endif                                  // #ifndef _CDRIO_H_

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