SQLFetcher.hh

//********************************************************************
//*** ResourcePool/SQL/SQLFetcher.hh
//*** Copyright (c) 2003-2009 by Markus Winand <mws@fatalmind.com>
//*** $Id: SQLFetcher.hh,v 1.6 2009-03-15 16:08:09 mws Exp $
//********************************************************************
/*
This file is part of ResourcePool.

ResourcePool 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.

ResourcePool 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 ResourcePool; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307  USA */

#ifndef RESOURCEPOOL_SQL_SQLFETCHER_HH
#define RESOURCEPOOL_SQL_SQLFETCHER_HH


namespace fatalmind {
namespace SQL {

class SQLFetcher {
    public:
        virtual ~SQLFetcher() {
        }

        virtual bool process(int row) = 0;

        virtual void done(bool more, int fetched) {
            // The default implementation does nothing
        }
};

class NopSQLFetcher: public SQL::SQLFetcher {
    public:
        NopSQLFetcher() {
        };
        virtual ~NopSQLFetcher() {
        }
        virtual bool process(int row) {
            return true;
        };
};

extern NopSQLFetcher NopFetcher;

} //namespace SQL
} //namespace fatalmind

#endif

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