8a7a947faa
the underlying connection of a reader or command to be closed before the reader or command itself. Added the proper logic to Close and dispose items in CloseDBConnection. Readers and Connections need Close(), Commands need Dispose(), in the order Reader, Command, Connection. Also reinstated 80-column-friendly formatting
124 lines
4.5 KiB
C#
124 lines
4.5 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data;
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using OpenMetaverse;
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using OpenSim.Framework;
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using MySql.Data.MySqlClient;
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namespace OpenSim.Data.MySQL
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{
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/// <summary>
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/// A database interface class to a user profile storage system
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/// </summary>
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public class MySqlFramework
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{
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private static readonly log4net.ILog m_log =
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log4net.LogManager.GetLogger(
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System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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protected MySqlConnection m_Connection;
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protected MySqlFramework(string connectionString)
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{
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m_Connection = new MySqlConnection(connectionString);
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m_Connection.Open();
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}
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//////////////////////////////////////////////////////////////
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//
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// All non queries are funneled through one connection
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// to increase performance a little
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//
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protected int ExecuteNonQuery(MySqlCommand cmd)
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{
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lock (m_Connection)
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{
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cmd.Connection = m_Connection;
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bool errorSeen = false;
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while (true)
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{
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try
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{
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return cmd.ExecuteNonQuery();
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}
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catch (MySqlException e)
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{
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m_log.Error(e.Message, e);
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if (errorSeen)
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throw;
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// This is "Server has gone away" and "Server lost"
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if (e.Number == 2006 || e.Number == 2013)
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{
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errorSeen = true;
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m_Connection.Close();
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MySqlConnection newConnection =
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(MySqlConnection)((ICloneable)m_Connection).Clone();
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m_Connection.Dispose();
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m_Connection = newConnection;
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m_Connection.Open();
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cmd.Connection = m_Connection;
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}
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else
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throw;
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}
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catch (Exception e)
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{
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m_log.Error(e.Message, e);
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return 0;
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}
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}
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}
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}
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protected IDataReader ExecuteReader(MySqlCommand cmd)
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{
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MySqlConnection newConnection =
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(MySqlConnection)((ICloneable)m_Connection).Clone();
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newConnection.Open();
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cmd.Connection = newConnection;
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return cmd.ExecuteReader();
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}
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protected void CloseDBConnection(IDataReader reader, MySqlCommand cmd)
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{
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reader.Close();
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cmd.Connection.Close();
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cmd.Connection.Dispose();
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}
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}
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}
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