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/* -*- Mode: C++; indent-tabs-mode:nil; c-basic-offset: 4;  -*- */

 *This file is part of the Nemiver Project.
 *Nemiver 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,
 *or (at your option) any later version.
 *Nemiver is distributed in the hope that it will
 *be useful, but WITHOUT ANY WARRANTY;
 *without even the implied warranty of
 *See the GNU General Public License for more details.
 *You should have received a copy of the
 *GNU General Public License along with Nemiver;
 *see the file COPYING.
 *If not, write to the Free Software Foundation,
 *Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *See COPYRIGHT file copyright information.

#include "nmv-safe-ptr-utils.h"
#include "nmv-object.h"
#include "nmv-i-connection-driver.h"

namespace nemiver {

namespace common {
class UString ;
class Buffer ;

namespace common {
class SQLStatement;

namespace common {

class ResultSetDataReader ;
struct ConnectionPriv ;

class NEMIVER_API Connection : public common::Object

    friend struct ConnectionPriv ;
    friend class ConnectionManager ;
    ConnectionPriv *m_priv ;

    void set_connection_driver (const common::IConnectionDriverSafePtr &a_driver) ;
    void initialize () ;
    void deinitialize () ;

    Connection () ;

    Connection (const Connection &a_con) ;

    Connection& operator= (const Connection &a_con) ;

    bool is_initialized () const ;

    virtual ~Connection () ;

    const char* get_last_error () const ;

    bool start_transaction () ;

    bool commit_transaction () ;

    bool rollback_transaction () ;

    bool execute_statement (const common::SQLStatement &a_statement) ;

    bool should_have_data () const ;

    bool read_next_row () ;

    unsigned long get_number_of_columns () ;

    bool get_column_type (unsigned long a_offset,
                          enum common::ColumnType &) ;

    bool get_column_name (unsigned long a_offset, common::Buffer &a_name) ;

    bool get_column_content (unsigned long a_offset,
                             common::Buffer &a_field_content) ;

    bool get_column_content (gulong a_offset,
                             gint64 &a_column_content) ;

    bool get_column_content (gulong a_offset,
                             double& a_column_content);

    bool get_column_content (gulong a_offset,
                             common::UString& a_column_content);

    void close () ;
};//end Connection

typedef common::SafePtr<Connection,
                        common::ObjectUnref> ConnectionSafePtr ;

}//end namespace common
}//end nemiver
#endif //end __NEMIVER_CONNECTION_H__

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