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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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 OpenSimulator Project 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 DEVELOPERS ``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 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.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using OpenMetaverse;
using OpenSim.Framework;
using MySql.Data.MySqlClient;
namespace OpenSim.Data.MySQL
{
/// <summary>
/// A database interface class to a user profile storage system
/// </summary>
public class MySqlFramework
{
protected MySqlConnection m_Connection;
protected MySqlFramework(string connectionString)
{
m_Connection = new MySqlConnection(connectionString);
m_Connection.Open();
}
//////////////////////////////////////////////////////////////
//
// All non queries are funneled through one connection
// to increase performance a little
//
protected int ExecuteNonQuery(MySqlCommand cmd)
{
lock (m_Connection)
{
cmd.Connection = m_Connection;
bool errorSeen = false;
while (true)
{
try
{
return cmd.ExecuteNonQuery();
}
catch (MySqlException e)
{
if (errorSeen)
throw;
// This is "Server has gone away" and "Server lost"
//
if (e.Number == 2006 || e.Number == 2013)
{
errorSeen = true;
m_Connection.Close();
MySqlConnection newConnection =
(MySqlConnection)((ICloneable)m_Connection).Clone();
m_Connection.Dispose();
m_Connection = newConnection;
m_Connection.Open();
cmd.Connection = m_Connection;
}
else
throw;
}
catch (Exception e)
{
return 0;
}
}
}
}
protected IDataReader ExecuteReader(MySqlCommand cmd)
{
MySqlConnection newConnection =
(MySqlConnection)((ICloneable)m_Connection).Clone();
newConnection.Open();
cmd.Connection = newConnection;
return cmd.ExecuteReader();
}
protected void CloseReaderCommand(MySqlCommand cmd)
{
cmd.Connection.Close();
cmd.Connection.Dispose();
cmd.Dispose();
}
}
}
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