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/*
* The Mana Server
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server 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
* any later version.
*
* The Mana Server 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 The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PQDATAPROVIDER_H
#define PQDATAPROVIDER_H
#include <iosfwd>
#include <libpq-fe.h>
#include "dataprovider.h"
namespace dal
{
/**
* A PostgreSQL Data Provider.
*/
class PqDataProvider: public DataProvider
{
public:
/**
* Constructor
*/
PqDataProvider()
throw();
/**
* Destructor
*/
~PqDataProvider()
throw();
/**
* Get name of the database backend
*
* @return the database backend name
*/
DbBackends getDbBackend() const
throw();
/**
* Create a connection to the database.
*
* @param dbName the database name.
* @param userName the user name.
* @param password the user password.
*
* @exception DbConnectionFailure if unsuccessful connection.
*/
void connect(const std::string& dbName,
const std::string& userName,
const std::string& password);
/**
* Execute a SQL query.
*
* @param sql the SQL query.
* @param refresh if true, refresh the cache (default = false).
*
* @return a recordset.
*
* @exception DbSqlQueryExecFailure if unsuccessful execution.
* @exception std::runtime_error if trying to query a closed database.
*/
const RecordSet &execSql(const std::string& sql,
const bool refresh = false);
/**
* Close the connection to the database.
*
* @exception DbDisconnectionFailure if unsuccessful disconnection.
*/
void disconnect();
private:
PGconn *mDb; /**< Database connection handle */
};
} // namespace dal
#endif // PQDATAPROVIDER_H
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