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Duplicate OpenSim.Data.SQLite into OpenSim.Data.SQLiteNG. SQLiteNG will shortly be changed to work under mono 2.6 and above
This commit is contained in:
Justin Clark-Casey (justincc)
343
OpenSim/Data/SQLiteNG/SQLiteAssetData.cs
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343
OpenSim/Data/SQLiteNG/SQLiteAssetData.cs
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/*
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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.Data;
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using System.Reflection;
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using System.Collections.Generic;
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using log4net;
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using Mono.Data.SqliteClient;
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using OpenMetaverse;
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using OpenSim.Framework;
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namespace OpenSim.Data.SQLite
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{
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/// <summary>
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/// An asset storage interface for the SQLite database system
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/// </summary>
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public class SQLiteAssetData : AssetDataBase
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private const string SelectAssetSQL = "select * from assets where UUID=:UUID";
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private const string SelectAssetMetadataSQL = "select Name, Description, Type, Temporary, UUID from assets limit :start, :count";
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private const string DeleteAssetSQL = "delete from assets where UUID=:UUID";
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private const string InsertAssetSQL = "insert into assets(UUID, Name, Description, Type, Local, Temporary, Data) values(:UUID, :Name, :Description, :Type, :Local, :Temporary, :Data)";
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private const string UpdateAssetSQL = "update assets set Name=:Name, Description=:Description, Type=:Type, Local=:Local, Temporary=:Temporary, Data=:Data where UUID=:UUID";
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private const string assetSelect = "select * from assets";
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private SqliteConnection m_conn;
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override public void Dispose()
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{
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if (m_conn != null)
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{
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m_conn.Close();
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m_conn = null;
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}
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}
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/// <summary>
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/// <list type="bullet">
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/// <item>Initialises AssetData interface</item>
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/// <item>Loads and initialises a new SQLite connection and maintains it.</item>
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/// <item>use default URI if connect string is empty.</item>
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/// </list>
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/// </summary>
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/// <param name="dbconnect">connect string</param>
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override public void Initialise(string dbconnect)
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{
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if (dbconnect == string.Empty)
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{
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dbconnect = "URI=file:Asset.db,version=3";
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}
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m_conn = new SqliteConnection(dbconnect);
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m_conn.Open();
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Assembly assem = GetType().Assembly;
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Migration m = new Migration(m_conn, assem, "AssetStore");
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m.Update();
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return;
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}
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/// <summary>
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/// Fetch Asset
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/// </summary>
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/// <param name="uuid">UUID of ... ?</param>
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/// <returns>Asset base</returns>
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override public AssetBase GetAsset(UUID uuid)
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{
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lock (this)
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{
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using (SqliteCommand cmd = new SqliteCommand(SelectAssetSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
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using (IDataReader reader = cmd.ExecuteReader())
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{
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if (reader.Read())
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{
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AssetBase asset = buildAsset(reader);
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reader.Close();
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return asset;
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}
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else
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{
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reader.Close();
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return null;
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}
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}
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}
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}
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}
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/// <summary>
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/// Create an asset
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/// </summary>
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/// <param name="asset">Asset Base</param>
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override public void StoreAsset(AssetBase asset)
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{
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//m_log.Info("[ASSET DB]: Creating Asset " + asset.FullID.ToString());
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if (ExistsAsset(asset.FullID))
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{
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//LogAssetLoad(asset);
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lock (this)
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{
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using (SqliteCommand cmd = new SqliteCommand(UpdateAssetSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":UUID", asset.FullID.ToString()));
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cmd.Parameters.Add(new SqliteParameter(":Name", asset.Name));
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cmd.Parameters.Add(new SqliteParameter(":Description", asset.Description));
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cmd.Parameters.Add(new SqliteParameter(":Type", asset.Type));
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cmd.Parameters.Add(new SqliteParameter(":Local", asset.Local));
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cmd.Parameters.Add(new SqliteParameter(":Temporary", asset.Temporary));
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cmd.Parameters.Add(new SqliteParameter(":Data", asset.Data));
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cmd.ExecuteNonQuery();
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}
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}
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}
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else
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{
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lock (this)
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{
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using (SqliteCommand cmd = new SqliteCommand(InsertAssetSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":UUID", asset.FullID.ToString()));
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cmd.Parameters.Add(new SqliteParameter(":Name", asset.Name));
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cmd.Parameters.Add(new SqliteParameter(":Description", asset.Description));
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cmd.Parameters.Add(new SqliteParameter(":Type", asset.Type));
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cmd.Parameters.Add(new SqliteParameter(":Local", asset.Local));
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cmd.Parameters.Add(new SqliteParameter(":Temporary", asset.Temporary));
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cmd.Parameters.Add(new SqliteParameter(":Data", asset.Data));
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cmd.ExecuteNonQuery();
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}
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}
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}
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}
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// /// <summary>
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// /// Some... logging functionnality
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// /// </summary>
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// /// <param name="asset"></param>
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// private static void LogAssetLoad(AssetBase asset)
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// {
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// string temporary = asset.Temporary ? "Temporary" : "Stored";
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// string local = asset.Local ? "Local" : "Remote";
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//
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// int assetLength = (asset.Data != null) ? asset.Data.Length : 0;
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//
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// m_log.Debug("[ASSET DB]: " +
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// string.Format("Loaded {5} {4} Asset: [{0}][{3}] \"{1}\":{2} ({6} bytes)",
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// asset.FullID, asset.Name, asset.Description, asset.Type,
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// temporary, local, assetLength));
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// }
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/// <summary>
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/// Check if an asset exist in database
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/// </summary>
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/// <param name="uuid">The asset UUID</param>
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/// <returns>True if exist, or false.</returns>
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override public bool ExistsAsset(UUID uuid)
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{
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lock (this) {
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using (SqliteCommand cmd = new SqliteCommand(SelectAssetSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
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using (IDataReader reader = cmd.ExecuteReader())
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{
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if (reader.Read())
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{
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reader.Close();
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return true;
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}
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else
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{
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reader.Close();
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return false;
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}
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}
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}
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}
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}
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/// <summary>
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/// Delete an asset from database
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/// </summary>
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/// <param name="uuid"></param>
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public void DeleteAsset(UUID uuid)
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{
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using (SqliteCommand cmd = new SqliteCommand(DeleteAssetSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
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cmd.ExecuteNonQuery();
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="row"></param>
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/// <returns></returns>
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private static AssetBase buildAsset(IDataReader row)
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{
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// TODO: this doesn't work yet because something more
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// interesting has to be done to actually get these values
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// back out. Not enough time to figure it out yet.
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AssetBase asset = new AssetBase(
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new UUID((String)row["UUID"]),
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(String)row["Name"],
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Convert.ToSByte(row["Type"]),
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UUID.Zero.ToString()
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);
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asset.Description = (String) row["Description"];
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asset.Local = Convert.ToBoolean(row["Local"]);
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asset.Temporary = Convert.ToBoolean(row["Temporary"]);
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asset.Data = (byte[]) row["Data"];
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return asset;
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}
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private static AssetMetadata buildAssetMetadata(IDataReader row)
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{
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AssetMetadata metadata = new AssetMetadata();
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metadata.FullID = new UUID((string) row["UUID"]);
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metadata.Name = (string) row["Name"];
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metadata.Description = (string) row["Description"];
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metadata.Type = Convert.ToSByte(row["Type"]);
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metadata.Temporary = Convert.ToBoolean(row["Temporary"]); // Not sure if this is correct.
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// Current SHA1s are not stored/computed.
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metadata.SHA1 = new byte[] {};
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return metadata;
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}
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/// <summary>
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/// Returns a list of AssetMetadata objects. The list is a subset of
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/// the entire data set offset by <paramref name="start" /> containing
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/// <paramref name="count" /> elements.
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/// </summary>
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/// <param name="start">The number of results to discard from the total data set.</param>
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/// <param name="count">The number of rows the returned list should contain.</param>
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/// <returns>A list of AssetMetadata objects.</returns>
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public override List<AssetMetadata> FetchAssetMetadataSet(int start, int count)
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{
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List<AssetMetadata> retList = new List<AssetMetadata>(count);
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lock (this)
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{
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using (SqliteCommand cmd = new SqliteCommand(SelectAssetMetadataSQL, m_conn))
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{
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cmd.Parameters.Add(new SqliteParameter(":start", start));
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cmd.Parameters.Add(new SqliteParameter(":count", count));
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using (IDataReader reader = cmd.ExecuteReader())
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{
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while (reader.Read())
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{
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AssetMetadata metadata = buildAssetMetadata(reader);
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retList.Add(metadata);
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}
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}
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}
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}
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return retList;
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}
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/***********************************************************************
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*
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* Database Binding functions
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*
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* These will be db specific due to typing, and minor differences
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* in databases.
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*
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**********************************************************************/
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#region IPlugin interface
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/// <summary>
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///
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/// </summary>
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override public string Version
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{
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get
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{
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Module module = GetType().Module;
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// string dllName = module.Assembly.ManifestModule.Name;
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Version dllVersion = module.Assembly.GetName().Version;
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return
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string.Format("{0}.{1}.{2}.{3}", dllVersion.Major, dllVersion.Minor, dllVersion.Build,
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dllVersion.Revision);
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}
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}
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/// <summary>
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/// Initialise the AssetData interface using default URI
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/// </summary>
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override public void Initialise()
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{
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Initialise("URI=file:Asset.db,version=3");
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}
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/// <summary>
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/// Name of this DB provider
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/// </summary>
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override public string Name
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{
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get { return "SQLite Asset storage engine"; }
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}
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#endregion
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}
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}
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