Duplicate OpenSim.Data.SQLite into OpenSim.Data.SQLiteNG. SQLiteNG will shortly be changed to work under mono 2.6 and above

1 files changed, 343 insertions, 0 deletions

diff --git a/OpenSim/Data/SQLiteNG/SQLiteAssetData.cs b/OpenSim/Data/SQLiteNG/SQLiteAssetData.cs
new file mode 100644
index 0000000..a032670
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+++ b/OpenSim/Data/SQLiteNG/SQLiteAssetData.cs
@@ -0,0 +1,343 @@
+/*
+ * 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.Data;
+using System.Reflection;
+using System.Collections.Generic;
+using log4net;
+using Mono.Data.SqliteClient;
+using OpenMetaverse;
+using OpenSim.Framework;
+
+namespace OpenSim.Data.SQLite
+{
+    /// <summary>
+    /// An asset storage interface for the SQLite database system
+    /// </summary>
+    public class SQLiteAssetData : AssetDataBase
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private const string SelectAssetSQL = "select * from assets where UUID=:UUID";
+        private const string SelectAssetMetadataSQL = "select Name, Description, Type, Temporary, UUID from assets limit :start, :count";
+        private const string DeleteAssetSQL = "delete from assets where UUID=:UUID";
+        private const string InsertAssetSQL = "insert into assets(UUID, Name, Description, Type, Local, Temporary, Data) values(:UUID, :Name, :Description, :Type, :Local, :Temporary, :Data)";
+        private const string UpdateAssetSQL = "update assets set Name=:Name, Description=:Description, Type=:Type, Local=:Local, Temporary=:Temporary, Data=:Data where UUID=:UUID";
+        private const string assetSelect = "select * from assets";
+
+        private SqliteConnection m_conn;
+
+        override public void Dispose()
+        {
+            if (m_conn != null)
+            {
+                m_conn.Close();
+                m_conn = null;
+            }
+        }
+
+        /// <summary>
+        /// <list type="bullet">
+        /// <item>Initialises AssetData interface</item>
+        /// <item>Loads and initialises a new SQLite connection and maintains it.</item>
+        /// <item>use default URI if connect string is empty.</item>
+        /// </list>
+        /// </summary>
+        /// <param name="dbconnect">connect string</param>
+        override public void Initialise(string dbconnect)
+        {
+            if (dbconnect == string.Empty)
+            {
+                dbconnect = "URI=file:Asset.db,version=3";
+            }
+            m_conn = new SqliteConnection(dbconnect);
+            m_conn.Open();
+
+            Assembly assem = GetType().Assembly;
+            Migration m = new Migration(m_conn, assem, "AssetStore");
+            m.Update();
+
+            return;
+        }
+
+        /// <summary>
+        /// Fetch Asset
+        /// </summary>
+        /// <param name="uuid">UUID of ... ?</param>
+        /// <returns>Asset base</returns>
+        override public AssetBase GetAsset(UUID uuid)
+        {
+            lock (this)
+            {
+                using (SqliteCommand cmd = new SqliteCommand(SelectAssetSQL, m_conn))
+                {
+                    cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
+                    using (IDataReader reader = cmd.ExecuteReader())
+                    {
+                        if (reader.Read())
+                        {
+                            AssetBase asset = buildAsset(reader);
+                            reader.Close();
+                            return asset;
+                        }
+                        else
+                        {
+                            reader.Close();
+                            return null;
+                        }
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Create an asset
+        /// </summary>
+        /// <param name="asset">Asset Base</param>
+        override public void StoreAsset(AssetBase asset)
+        {
+            //m_log.Info("[ASSET DB]: Creating Asset " + asset.FullID.ToString());
+            if (ExistsAsset(asset.FullID))
+            {
+                //LogAssetLoad(asset);
+
+                lock (this)
+                {
+                    using (SqliteCommand cmd = new SqliteCommand(UpdateAssetSQL, m_conn))
+                    {
+                        cmd.Parameters.Add(new SqliteParameter(":UUID", asset.FullID.ToString()));
+                        cmd.Parameters.Add(new SqliteParameter(":Name", asset.Name));
+                        cmd.Parameters.Add(new SqliteParameter(":Description", asset.Description));
+                        cmd.Parameters.Add(new SqliteParameter(":Type", asset.Type));
+                        cmd.Parameters.Add(new SqliteParameter(":Local", asset.Local));
+                        cmd.Parameters.Add(new SqliteParameter(":Temporary", asset.Temporary));
+                        cmd.Parameters.Add(new SqliteParameter(":Data", asset.Data));
+ 
+                        cmd.ExecuteNonQuery();
+                    }
+                }
+            }
+            else
+            {
+                lock (this)
+                {
+                    using (SqliteCommand cmd = new SqliteCommand(InsertAssetSQL, m_conn))
+                    {
+                        cmd.Parameters.Add(new SqliteParameter(":UUID", asset.FullID.ToString()));
+                        cmd.Parameters.Add(new SqliteParameter(":Name", asset.Name));
+                        cmd.Parameters.Add(new SqliteParameter(":Description", asset.Description));
+                        cmd.Parameters.Add(new SqliteParameter(":Type", asset.Type));
+                        cmd.Parameters.Add(new SqliteParameter(":Local", asset.Local));
+                        cmd.Parameters.Add(new SqliteParameter(":Temporary", asset.Temporary));
+                        cmd.Parameters.Add(new SqliteParameter(":Data", asset.Data));
+
+                        cmd.ExecuteNonQuery();
+                    }
+                }
+            }
+        }
+
+//        /// <summary>
+//        /// Some... logging functionnality
+//        /// </summary>
+//        /// <param name="asset"></param>
+//        private static void LogAssetLoad(AssetBase asset)
+//        {
+//            string temporary = asset.Temporary ? "Temporary" : "Stored";
+//            string local = asset.Local ? "Local" : "Remote";
+//
+//            int assetLength = (asset.Data != null) ? asset.Data.Length : 0;
+//
+//            m_log.Debug("[ASSET DB]: " +
+//                                     string.Format("Loaded {5} {4} Asset: [{0}][{3}] \"{1}\":{2} ({6} bytes)",
+//                                                   asset.FullID, asset.Name, asset.Description, asset.Type,
+//                                                   temporary, local, assetLength));
+//        }
+
+        /// <summary>
+        /// Check if an asset exist in database
+        /// </summary>
+        /// <param name="uuid">The asset UUID</param>
+        /// <returns>True if exist, or false.</returns>
+        override public bool ExistsAsset(UUID uuid)
+        {
+            lock (this) {
+                using (SqliteCommand cmd = new SqliteCommand(SelectAssetSQL, m_conn))
+                {
+                    cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
+                    using (IDataReader reader = cmd.ExecuteReader())
+                    {
+                        if (reader.Read())
+                        {
+                            reader.Close();
+                            return true;
+                        }
+                        else
+                        {
+                            reader.Close();
+                            return false;
+                        }
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Delete an asset from database
+        /// </summary>
+        /// <param name="uuid"></param>
+        public void DeleteAsset(UUID uuid)
+        {
+            using (SqliteCommand cmd = new SqliteCommand(DeleteAssetSQL, m_conn))
+            {
+                cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
+
+                cmd.ExecuteNonQuery();
+            }
+        }
+
+        /// <summary>
+        ///
+        /// </summary>
+        /// <param name="row"></param>
+        /// <returns></returns>
+        private static AssetBase buildAsset(IDataReader row)
+        {
+            // TODO: this doesn't work yet because something more
+            // interesting has to be done to actually get these values
+            // back out.  Not enough time to figure it out yet.
+            AssetBase asset = new AssetBase(
+                new UUID((String)row["UUID"]),
+                (String)row["Name"],
+                Convert.ToSByte(row["Type"]),
+                UUID.Zero.ToString()
+            );
+
+            asset.Description = (String) row["Description"];
+            asset.Local = Convert.ToBoolean(row["Local"]);
+            asset.Temporary = Convert.ToBoolean(row["Temporary"]);
+            asset.Data = (byte[]) row["Data"];
+            return asset;
+        }
+
+        private static AssetMetadata buildAssetMetadata(IDataReader row)
+        {
+            AssetMetadata metadata = new AssetMetadata();
+
+            metadata.FullID = new UUID((string) row["UUID"]);
+            metadata.Name = (string) row["Name"];
+            metadata.Description = (string) row["Description"];
+            metadata.Type = Convert.ToSByte(row["Type"]);
+            metadata.Temporary = Convert.ToBoolean(row["Temporary"]); // Not sure if this is correct.
+
+            // Current SHA1s are not stored/computed.
+            metadata.SHA1 = new byte[] {};
+
+            return metadata;
+        }
+
+        /// <summary>
+        /// Returns a list of AssetMetadata objects. The list is a subset of
+        /// the entire data set offset by <paramref name="start" /> containing
+        /// <paramref name="count" /> elements.
+        /// </summary>
+        /// <param name="start">The number of results to discard from the total data set.</param>
+        /// <param name="count">The number of rows the returned list should contain.</param>
+        /// <returns>A list of AssetMetadata objects.</returns>
+        public override List<AssetMetadata> FetchAssetMetadataSet(int start, int count)
+        {
+            List<AssetMetadata> retList = new List<AssetMetadata>(count);
+
+            lock (this)
+            {
+                using (SqliteCommand cmd = new SqliteCommand(SelectAssetMetadataSQL, m_conn))
+                {
+                    cmd.Parameters.Add(new SqliteParameter(":start", start));
+                    cmd.Parameters.Add(new SqliteParameter(":count", count));
+
+                    using (IDataReader reader = cmd.ExecuteReader())
+                    {
+                        while (reader.Read())
+                        {
+                            AssetMetadata metadata = buildAssetMetadata(reader);
+                            retList.Add(metadata);
+                        }
+                    }
+                }
+            }
+
+            return retList;
+        }
+
+        /***********************************************************************
+         *
+         *  Database Binding functions
+         *
+         *  These will be db specific due to typing, and minor differences
+         *  in databases.
+         *
+         **********************************************************************/
+
+        #region IPlugin interface
+
+        /// <summary>
+        ///
+        /// </summary>
+        override public string Version
+        {
+            get
+            {
+                Module module = GetType().Module;
+                // string dllName = module.Assembly.ManifestModule.Name;
+                Version dllVersion = module.Assembly.GetName().Version;
+
+                return
+                    string.Format("{0}.{1}.{2}.{3}", dllVersion.Major, dllVersion.Minor, dllVersion.Build,
+                                  dllVersion.Revision);
+            }
+        }
+
+        /// <summary>
+        /// Initialise the AssetData interface using default URI
+        /// </summary>
+        override public void Initialise()
+        {
+            Initialise("URI=file:Asset.db,version=3");
+        }
+
+        /// <summary>
+        /// Name of this DB provider
+        /// </summary>
+        override public string Name
+        {
+            get { return "SQLite Asset storage engine"; }
+        }
+
+        #endregion
+    }
+}
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