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/*
* database.h
*
* Copyright (C) 2009 Tim Marston <edam@waxworlds.org>
*
* This file is part of sqlite3cc (hereafter referred to as "this program").
* See http://www.waxworlds.org/edam/software/sqlite3cc for more information.
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SQLITE3CC_DATABASE_H_
#define SQLITE3CC_DATABASE_H_
#include <sqlite3.h>
#include <boost/utility.hpp>
#include <string>
namespace sqlite
{
class basic_statement;
class basic_transaction;
class database
:
private boost::noncopyable
{
//______________________________________________________________________________
// instantiation
public:
/**
* Constructor that specifies the filename of a database to open.
* @param filename the filename of the database file to open
* @throws database_error on error
*/
explicit database(
const std::string &filename );
explicit database();
virtual ~database();
//______________________________________________________________________________
// public interface
public:
/**
* Open a database.
* @param filename the filename of the database file to open
* @param flags flags appropriate for sqlite3_open_v2()
* @returns an sqlite error code
* @see sqlite3_open_v2()
*/
int open(
const std::string &filename,
int flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE );
/**
* Close an open database.
* @throws database_error on error
* @see sqlite3_close()
*/
void close();
/**
* Execute an SQL statement. An exception is thrown on error.
* @param sql an SQL statement in UTF-8
* @see sqlite3_exc()
*/
void exec(
const std::string &sql );
/**
* Sets a default busy handler which will
* wait for the specified number of milliseconds.
* @param milliseconds number of milliseconds to wait
* @returns an sqlite error code
* @see sqlite3_busy_timeout()
*/
int busy_timeout(
int duration );
//______________________________________________________________________________
// implementation
protected:
friend class basic_statement;
friend class basic_transaction;
friend class command;
friend class query;
friend class sqlite_error;
/** class to provide a scope lock for the database mutex */
class database_mutex_guard
{
public:
/** constructor that provides a database */
database_mutex_guard(
database &database );
~database_mutex_guard();
/** release the mutex early */
void leave();
private:
sqlite3_mutex *_mutex;
};
private:
/** the database handle */
sqlite3 *_handle;
};
} // namespace sqlite
#endif /* SQLITE3CC_DATABASE_H_ */
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