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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections;
30using System.Collections.Generic;
31using System.Data;
32using OpenMetaverse;
33using OpenSim.Framework;
34using MySql.Data.MySqlClient;
35
36namespace OpenSim.Data.MySQL
37{
38 /// <summary>
39 /// A database interface class to a user profile storage system
40 /// </summary>
41 public class MySqlFramework
42 {
43 protected MySqlConnection m_Connection;
44
45 protected MySqlFramework(string connectionString)
46 {
47 m_Connection = new MySqlConnection(connectionString);
48
49 m_Connection.Open();
50 }
51
52 //////////////////////////////////////////////////////////////
53 //
54 // All non queries are funneled through one connection
55 // to increase performance a little
56 //
57 protected int ExecuteNonQuery(MySqlCommand cmd)
58 {
59 lock (m_Connection)
60 {
61 cmd.Connection = m_Connection;
62
63 bool errorSeen = false;
64
65 while (true)
66 {
67 try
68 {
69 return cmd.ExecuteNonQuery();
70 }
71 catch (MySqlException e)
72 {
73 if (errorSeen)
74 throw;
75
76 // This is "Server has gone away" and "Server lost"
77 //
78 if (e.Number == 2006 || e.Number == 2013)
79 {
80 errorSeen = true;
81
82 m_Connection.Close();
83 MySqlConnection newConnection = (MySqlConnection)
84 ((ICloneable)m_Connection).Clone();
85 m_Connection.Dispose();
86 m_Connection = newConnection;
87 m_Connection.Open();
88
89 cmd.Connection = m_Connection;
90 }
91 }
92 }
93 }
94 }
95
96 protected IDataReader ExecuteReader(MySqlCommand cmd)
97 {
98 MySqlConnection newConnection = (MySqlConnection)
99 ((ICloneable)m_Connection).Clone();
100
101 newConnection.Open();
102
103 cmd.Connection = newConnection;
104
105 return cmd.ExecuteReader();
106 }
107
108 protected void CloseReaderCommand(MySqlCommand cmd)
109 {
110 cmd.Connection.Close();
111 cmd.Connection.Dispose();
112 cmd.Dispose();
113 }
114 }
115}