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/*
* Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
*
* This program 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
* (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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <ace/Activation_Queue.h>
#include "DatabaseWorkerPool.h"
#ifndef _MYSQLCONNECTION_H
#define _MYSQLCONNECTION_H
class DatabaseWorker;
class PreparedStatement;
class MySQLPreparedStatement;
class PingOperation;
class MySQLConnection
{
template <class T> friend class DatabaseWorkerPool;
friend class PingOperation;
public:
MySQLConnection(); //! Constructor for synchroneous connections.
MySQLConnection(ACE_Activation_Queue* queue); //! Constructor for asynchroneous connections.
~MySQLConnection();
virtual bool Open(const std::string& infoString); //! Connection details.
void Close();
public:
bool Execute(const char* sql);
bool Execute(PreparedStatement* stmt);
ResultSet* Query(const char* sql);
PreparedResultSet* Query(PreparedStatement* stmt);
bool _Query(const char *sql, MYSQL_RES **pResult, MYSQL_FIELD **pFields, uint64* pRowCount, uint32* pFieldCount);
bool _Query(PreparedStatement* stmt, MYSQL_RES **pResult, MYSQL_FIELD **pFields, uint64* pRowCount, uint32* pFieldCount);
void BeginTransaction();
void RollbackTransaction();
void CommitTransaction();
operator bool () const { return m_Mysql != NULL; }
void Ping() { mysql_ping(m_Mysql); }
protected:
MYSQL* GetHandle() { return m_Mysql; }
MySQLPreparedStatement* GetPreparedStatement(uint32 index);
void PrepareStatement(uint32 index, const char* sql);
std::vector<MySQLPreparedStatement*> m_stmts; //! PreparedStatements storage
bool LockIfReady()
{
/// Tries to acquire lock. If lock is acquired by another thread
/// the calling parent will just try another connection
return m_Mutex.tryacquire() != -1;
}
void Unlock()
{
/// Called by parent databasepool. Will let other threads access this connection
m_Mutex.release();
}
private:
ACE_Activation_Queue* m_queue; //! Queue shared with other asynchroneous connections.
DatabaseWorker* m_worker; //! Core worker task.
MYSQL * m_Mysql; //! MySQL Handle.
ACE_Thread_Mutex m_Mutex;
};
#endif
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