bf469819a6
This is to stop viewer inventory cache version numbers becoming out of sync with grid stored numbers when viewer performs these actions. If there are no problems with these changes, they will be propogated to SQLite (and MSSQL if that's simple enough). May also need to do the same on folder store/create/delete and maybe propogate version increments up the folder hierarchy, but that requires investigation.
305 lines
11 KiB
C#
305 lines
11 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.Generic;
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using System.Data;
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using System.Reflection;
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using log4net;
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using MySql.Data.MySqlClient;
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using OpenMetaverse;
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using OpenSim.Framework;
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using OpenSim.Region.Framework.Interfaces;
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namespace OpenSim.Data.MySQL
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{
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public class MySQLGenericTableHandler<T> : MySqlFramework where T: class, new()
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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protected Dictionary<string, FieldInfo> m_Fields =
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new Dictionary<string, FieldInfo>();
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protected List<string> m_ColumnNames = null;
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protected string m_Realm;
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protected FieldInfo m_DataField = null;
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protected virtual Assembly Assembly
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{
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get { return GetType().Assembly; }
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}
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public MySQLGenericTableHandler(string connectionString,
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string realm, string storeName) : base(connectionString)
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{
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m_Realm = realm;
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m_connectionString = connectionString;
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if (storeName != String.Empty)
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{
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using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
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{
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dbcon.Open();
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Migration m = new Migration(dbcon, Assembly, storeName);
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m.Update();
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}
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}
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Type t = typeof(T);
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FieldInfo[] fields = t.GetFields(BindingFlags.Public |
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BindingFlags.Instance |
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BindingFlags.DeclaredOnly);
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if (fields.Length == 0)
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return;
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foreach (FieldInfo f in fields)
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{
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if (f.Name != "Data")
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m_Fields[f.Name] = f;
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else
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m_DataField = f;
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}
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}
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private void CheckColumnNames(IDataReader reader)
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{
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if (m_ColumnNames != null)
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return;
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List<string> columnNames = new List<string>();
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DataTable schemaTable = reader.GetSchemaTable();
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foreach (DataRow row in schemaTable.Rows)
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{
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if (row["ColumnName"] != null &&
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(!m_Fields.ContainsKey(row["ColumnName"].ToString())))
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columnNames.Add(row["ColumnName"].ToString());
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}
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m_ColumnNames = columnNames;
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}
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public virtual T[] Get(string field, string key)
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{
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return Get(new string[] { field }, new string[] { key });
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}
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public virtual T[] Get(string[] fields, string[] keys)
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{
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if (fields.Length != keys.Length)
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return new T[0];
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List<string> terms = new List<string>();
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using (MySqlCommand cmd = new MySqlCommand())
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{
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for (int i = 0 ; i < fields.Length ; i++)
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{
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cmd.Parameters.AddWithValue(fields[i], keys[i]);
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terms.Add("`" + fields[i] + "` = ?" + fields[i]);
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}
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string where = String.Join(" and ", terms.ToArray());
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string query = String.Format("select * from {0} where {1}",
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m_Realm, where);
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cmd.CommandText = query;
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return DoQuery(cmd);
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}
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}
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protected T[] DoQuery(MySqlCommand cmd)
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{
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List<T> result = new List<T>();
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using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
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{
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dbcon.Open();
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cmd.Connection = dbcon;
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using (IDataReader reader = cmd.ExecuteReader())
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{
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if (reader == null)
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return new T[0];
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CheckColumnNames(reader);
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while (reader.Read())
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{
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T row = new T();
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foreach (string name in m_Fields.Keys)
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{
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if (reader[name] is DBNull)
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{
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continue;
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}
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if (m_Fields[name].FieldType == typeof(bool))
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{
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int v = Convert.ToInt32(reader[name]);
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m_Fields[name].SetValue(row, v != 0 ? true : false);
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}
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else if (m_Fields[name].FieldType == typeof(UUID))
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{
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m_Fields[name].SetValue(row, DBGuid.FromDB(reader[name]));
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}
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else if (m_Fields[name].FieldType == typeof(int))
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{
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int v = Convert.ToInt32(reader[name]);
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m_Fields[name].SetValue(row, v);
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}
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else
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{
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m_Fields[name].SetValue(row, reader[name]);
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}
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}
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if (m_DataField != null)
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{
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Dictionary<string, string> data =
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new Dictionary<string, string>();
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foreach (string col in m_ColumnNames)
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{
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data[col] = reader[col].ToString();
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if (data[col] == null)
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data[col] = String.Empty;
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}
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m_DataField.SetValue(row, data);
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}
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result.Add(row);
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}
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}
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}
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return result.ToArray();
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}
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public virtual T[] Get(string where)
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{
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using (MySqlCommand cmd = new MySqlCommand())
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{
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string query = String.Format("select * from {0} where {1}",
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m_Realm, where);
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cmd.CommandText = query;
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return DoQuery(cmd);
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}
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}
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public virtual bool Store(T row)
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{
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// m_log.DebugFormat("[MYSQL GENERIC TABLE HANDLER]: Store(T row) invoked");
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using (MySqlCommand cmd = new MySqlCommand())
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{
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string query = "";
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List<String> names = new List<String>();
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List<String> values = new List<String>();
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foreach (FieldInfo fi in m_Fields.Values)
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{
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names.Add(fi.Name);
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values.Add("?" + fi.Name);
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// Temporarily return more information about what field is unexpectedly null for
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// http://opensimulator.org/mantis/view.php?id=5403. This might be due to a bug in the
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// InventoryTransferModule or we may be required to substitute a DBNull here.
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if (fi.GetValue(row) == null)
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throw new NullReferenceException(
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string.Format(
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"[MYSQL GENERIC TABLE HANDLER]: Trying to store field {0} for {1} which is unexpectedly null",
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fi.Name, row));
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cmd.Parameters.AddWithValue(fi.Name, fi.GetValue(row).ToString());
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}
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if (m_DataField != null)
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{
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Dictionary<string, string> data =
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(Dictionary<string, string>)m_DataField.GetValue(row);
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foreach (KeyValuePair<string, string> kvp in data)
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{
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names.Add(kvp.Key);
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values.Add("?" + kvp.Key);
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cmd.Parameters.AddWithValue("?" + kvp.Key, kvp.Value);
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}
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}
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query = String.Format("replace into {0} (`", m_Realm) + String.Join("`,`", names.ToArray()) + "`) values (" + String.Join(",", values.ToArray()) + ")";
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cmd.CommandText = query;
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if (ExecuteNonQuery(cmd) > 0)
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return true;
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return false;
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}
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}
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public virtual bool Delete(string field, string key)
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{
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return Delete(new string[] { field }, new string[] { key });
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}
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public virtual bool Delete(string[] fields, string[] keys)
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{
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// m_log.DebugFormat(
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// "[MYSQL GENERIC TABLE HANDLER]: Delete(string[] fields, string[] keys) invoked with {0}:{1}",
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// string.Join(",", fields), string.Join(",", keys));
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if (fields.Length != keys.Length)
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return false;
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List<string> terms = new List<string>();
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using (MySqlCommand cmd = new MySqlCommand())
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{
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for (int i = 0 ; i < fields.Length ; i++)
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{
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cmd.Parameters.AddWithValue(fields[i], keys[i]);
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terms.Add("`" + fields[i] + "` = ?" + fields[i]);
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}
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string where = String.Join(" and ", terms.ToArray());
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string query = String.Format("delete from {0} where {1}", m_Realm, where);
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cmd.CommandText = query;
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return ExecuteNonQuery(cmd) > 0;
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}
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}
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}
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} |