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dbconnection.h

/* liblookdb: dbconnection.h - Database connection
    Copyright (C) 1998-2001 LOOK Systems

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef LIBLOOKDB_DBCONNECTION_H
#define LIBLOOKDB_DBCONNECTION_H

// $Id: dbconnection.h,v 1.7 2001/07/19 17:51:49 clive Exp $

#include "lookdblibrary.h"
#include "lookdbinterface.h"
#include "lkstring.h"
#include "t_list.h"

namespace look {

class DbConnection;

#ifdef WIN32
template class LOOKDBLIBRARY_DLL LookTLList<DbConnection*>;
#endif
typedef LookTLList<DbConnection*> ConnectionList;


class LOOKDBLIBRARY_DLL DbConnection
{
public:

        enum ConnectionStyle
        {
                DEFAULT,                 
                AUTO_COMMIT,             
                PERSISTENT_READ_ONLY     
        };

        DbConnection( const LookString& theDatabaseName = "",
                const LookString& theUser = "",
                const LookString& thePassword = "");

        DbConnection( const DbConnection& theConnection );

        virtual ~DbConnection();

        bool Connect(void);
        void Disconnect(void);

        bool Commit(void) const;
        bool Rollback(void) const;

        void SetConnectionStyle( ConnectionStyle theConnectionStyle )
        {
                itsConnectionStyle = theConnectionStyle;
        }

        ConnectionStyle GetConnectionStyle( void )
        {
                return itsConnectionStyle;
        }

        LOOK_DBC GetSession( void )
        {
                return itsSessionNumber;
        }

        static void TerminateConnections( void );

        static DbConnection* GetGlobalConnection( void );
        static void SetGlobalConnection( DbConnection* theConnection );

protected:
        LookString itsDatabaseName;
        LookString itsUser;
        LookString itsPassword;
        LOOK_DBC itsSessionNumber;
        bool itIsConnected;

        ConnectionStyle itsConnectionStyle; 

        static DbConnection* itsGlobalConnection;

        static ConnectionList itsConnections;
};


} // end of "look" namespace
#endif 

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