From c52c68f314c67c76c7181a6d0828f476290fbd66 Mon Sep 17 00:00:00 2001
From: Sean Dague
Date: Wed, 2 Apr 2008 15:24:31 +0000
Subject: whole lot more moving

---
 OpenSim/Data/DB4o/DB4oManager.cs | 170 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 OpenSim/Data/DB4o/DB4oManager.cs

(limited to 'OpenSim/Data/DB4o/DB4oManager.cs')

diff --git a/OpenSim/Data/DB4o/DB4oManager.cs b/OpenSim/Data/DB4o/DB4oManager.cs
new file mode 100644
index 0000000..9cacb5e
--- /dev/null
+++ b/OpenSim/Data/DB4o/DB4oManager.cs
@@ -0,0 +1,170 @@
+/*
+ * 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 OpenSim 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.Generic;
+using Db4objects.Db4o;
+using libsecondlife;
+
+namespace OpenSim.Framework.Data.DB4o
+{
+    /// <summary>
+    /// A Database manager for Db4o
+    /// </summary>
+    internal class DB4oGridManager
+    {
+        /// <summary>
+        /// A list of the current regions connected (in-memory cache)
+        /// </summary>
+        public Dictionary<LLUUID, RegionProfileData> simProfiles = new Dictionary<LLUUID, RegionProfileData>();
+
+        /// <summary>
+        /// Database File Name
+        /// </summary>
+        private string dbfl;
+
+        /// <summary>
+        /// Creates a new grid storage manager
+        /// </summary>
+        /// <param name="db4odb">Filename to the database file</param>
+        public DB4oGridManager(string db4odb)
+        {
+            dbfl = db4odb;
+            IObjectContainer database;
+            database = Db4oFactory.OpenFile(dbfl);
+            IObjectSet result = database.Get(typeof (RegionProfileData));
+            // Loads the file into the in-memory cache
+            foreach (RegionProfileData row in result)
+            {
+                simProfiles.Add(row.UUID, row);
+            }
+            database.Close();
+        }
+
+        /// <summary>
+        /// Adds a new profile to the database (Warning: Probably slow.)
+        /// </summary>
+        /// <param name="row">The profile to add</param>
+        /// <returns>Successful?</returns>
+        public bool AddRow(RegionProfileData row)
+        {
+            if (simProfiles.ContainsKey(row.UUID))
+            {
+                simProfiles[row.UUID] = row;
+            }
+            else
+            {
+                simProfiles.Add(row.UUID, row);
+            }
+
+            try
+            {
+                IObjectContainer database;
+                database = Db4oFactory.OpenFile(dbfl);
+                database.Set(row);
+                database.Close();
+                return true;
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
+    }
+
+    /// <summary>
+    /// A manager for the DB4o database (user profiles)
+    /// </summary>
+    internal class DB4oUserManager
+    {
+        /// <summary>
+        /// A list of the user profiles (in memory cache)
+        /// </summary>
+        public Dictionary<LLUUID, UserProfileData> userProfiles = new Dictionary<LLUUID, UserProfileData>();
+
+        /// <summary>
+        /// Database filename
+        /// </summary>
+        private string dbfl;
+
+        /// <summary>
+        /// Initialises a new DB manager
+        /// </summary>
+        /// <param name="db4odb">The filename to the database</param>
+        public DB4oUserManager(string db4odb)
+        {
+            dbfl = db4odb;
+            IObjectContainer database;
+            database = Db4oFactory.OpenFile(dbfl);
+            // Load to cache
+            IObjectSet result = database.Get(typeof (UserProfileData));
+            foreach (UserProfileData row in result)
+            {
+                if (userProfiles.ContainsKey(row.UUID))
+                    userProfiles[row.UUID] = row;
+                else
+                    userProfiles.Add(row.UUID, row);
+            }
+            database.Close();
+        }
+
+        /// <summary>
+        /// Adds or updates a record to the user database.  Do this when changes are needed
+        /// in the user profile that need to be persistant.
+        /// 
+        /// TODO: the logic here is not ACID, the local cache will be
+        /// updated even if the persistant data is not.  This may lead
+        /// to unexpected results.
+        /// </summary>
+        /// <param name="record">The profile to update</param>
+        /// <returns>true on success, false on fail to persist to db</returns>
+        public bool UpdateRecord(UserProfileData record)
+        {
+            if (userProfiles.ContainsKey(record.UUID))
+            {
+                userProfiles[record.UUID] = record;
+            }
+            else
+            {
+                userProfiles.Add(record.UUID, record);
+            }
+
+            try
+            {
+                IObjectContainer database;
+                database = Db4oFactory.OpenFile(dbfl);
+                database.Set(record);
+                database.Close();
+                return true;
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
+    }
+}
-- 
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