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/*
* Copyright (c) 2015, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_COMPONENTS_POLICY_QDB_WRAPPER_INCLUDE_QDB_WRAPPER_SQL_DATABASE_H_
#define SRC_COMPONENTS_POLICY_QDB_WRAPPER_INCLUDE_QDB_WRAPPER_SQL_DATABASE_H_
#include <qdb/qdb.h>
#include <string>
#include "qdb_wrapper/sql_error.h"
#include "utils/lock.h"
namespace utils {
namespace dbms {
class SQLQuery;
/**
* Represents a connection to a database.
*/
class SQLDatabase {
public:
explicit SQLDatabase(const std::string& db_name);
~SQLDatabase();
/**
* Opens connection to the temporary in-memory database
* @return true if successfully
*/
bool Open();
/**
* Closes connection to the database
*/
void Close();
/**
* Begins a transaction on the database
* @return true if successfully
*/
bool BeginTransaction();
/**
* Commits a transaction to the database
* @return true if successfully
*/
bool CommitTransaction();
/**
* Rolls back a transaction on the database
* @return true if successfully
*/
bool RollbackTransaction();
/**
* Gets information about the last error that occurred on the database
* @return last error
*/
SQLError LastError() const;
/**
* Call backup for opened DB
*/
bool Backup();
protected:
/**
* Gets connection to the SQLite database
* @return pointer to connection
*/
qdb_hdl_t* conn() const;
private:
/**
* The connection to the SQLite database
*/
qdb_hdl_t* conn_;
/**
* Lock for guarding connection to database
*/
sync_primitives::Lock conn_lock_;
/**
* The database name
*/
std::string db_name_;
/**
* The last error that occurred on the database
*/
Error error_;
/**
* Execs query for internal using in this class
* @param query sql query without return results
* @return true if query was executed successfully
*/
inline bool Exec(const std::string& query);
friend class SQLQuery;
};
} // namespace dbms
} // namespace utils
#endif // SRC_COMPONENTS_POLICY_QDB_WRAPPER_INCLUDE_QDB_WRAPPER_SQL_DATABASE_H_
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