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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>
/// Common code for a number of database modules
/// </summary>
public class MySqlFramework
{
private static readonly log4net.ILog m_log =
log4net.LogManager.GetLogger(
System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
protected string m_connectionString = String.Empty;
protected MySqlTransaction m_trans = null;
// Constructor using a connection string. Instances constructed
// this way will open a new connection for each call.
protected MySqlFramework(string connectionString)
{
m_connectionString = connectionString;
}
// Constructor using a connection object. Instances constructed
// this way will use the connection object and never create
// new connections.
protected MySqlFramework(MySqlTransaction trans)
{
m_trans = trans;
}
//////////////////////////////////////////////////////////////
//
// All non queries are funneled through one connection
// to increase performance a little
//
protected int ExecuteNonQuery(MySqlCommand cmd)
{
if (m_trans == null)
{
using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
{
dbcon.Open();
int ret = ExecuteNonQueryWithConnection(cmd, dbcon);
dbcon.Close();
return ret;
}
}
else
{
return ExecuteNonQueryWithTransaction(cmd, m_trans);
}
}
private int ExecuteNonQueryWithTransaction(MySqlCommand cmd, MySqlTransaction trans)
{
cmd.Transaction = trans;
return ExecuteNonQueryWithConnection(cmd, trans.Connection);
}
private int ExecuteNonQueryWithConnection(MySqlCommand cmd, MySqlConnection dbcon)
{
try
{
cmd.Connection = dbcon;
try
{
int ret = cmd.ExecuteNonQuery();
cmd.Connection = null;
return ret;
}
catch (Exception e)
{
m_log.Error(e.Message, e);
m_log.Error(Environment.StackTrace.ToString());
cmd.Connection = null;
return 0;
}
}
catch (Exception e)
{
m_log.Error(e.Message, e);
return 0;
}
}
}
}
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