---

ShareCallback.h

/*
 * Copyright 2003 Michael A. Marsh, Cornell University. All rights reserved.
 * This software is released under the modified BSD license.
 * See the file LICENSE in the top-level directory for details.
 */
//
// $Id: ShareCallback.h,v 1.3 2004/05/19 15:56:59 mmarsh Exp $
//
// $Log: ShareCallback.h,v $
// Revision 1.3  2004/05/19 15:56:59  mmarsh
// *** empty log message ***
//
// Revision 1.2  2003/11/04 22:31:51  mmarsh
// *** empty log message ***
//
//

#ifndef __CODEX_SERVER_SHARECALLBACK_H__
#define __CODEX_SERVER_SHARECALLBACK_H__

#include "CODEX_VSS/ShareLabel.h"
#include "ServerExceptions.h"

namespace CODEX_Server
{
   template< class _ShareType , class _OneWay >
   class ShareCallbackBase
   {
      public :
         typedef _ShareType                                     ShareType;

         typedef _OneWay                                        OneWay;

         typedef CODEX_VSS::LabeledShare< ShareType , OneWay >  LSType;

         typedef CODEX_VSS::ShareLabel< ShareType , OneWay >    LabelType;

         virtual ~ShareCallbackBase() {}

         virtual const LSType& operator()( const LabelType& label,
                                           unsigned int server ) const = 0;
   };

   template< class _ShareType , class _OneWay >
   class DefaultShareCallback :
         public ShareCallbackBase< _ShareType , _OneWay >
   {
      public :
         typedef CODEX_VSS::LabeledShare< _ShareType , _OneWay >  LSType;

         typedef typename LSType::LabelType  LabelType;

         DefaultShareCallback( const LSType* ls ) :
            m_ls( ls )
         {}

         virtual ~DefaultShareCallback() {}

         const LSType& operator()( const LabelType& label,
                                   unsigned int server ) const
         {
            if ( 0 == m_ls )
            {
               throw KeySharesNotFoundException( __FILE__ , __LINE__ );
            }
            return *m_ls;
         }

      private :
         const LSType*  m_ls;
   };

}

#endif /* __CODEX_SERVER_SHARECALLBACK_H__ */

---