Merge branch 'master' into careminster-presence-refactor

19 files changed, 379 insertions, 65 deletions

diff --git a/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs b/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
index 30253c3..a39e68d 100644
--- a/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
+++ b/OpenSim/Data/MySQL/MySQLLegacyRegionData.cs
@@ -247,6 +247,8 @@ namespace OpenSim.Data.MySQL
 
         public void RemoveObject(UUID obj, UUID regionUUID)
         {
+//            m_log.DebugFormat("[REGION DB]: Deleting scene object {0} from {1} in database", obj, regionUUID);
+            
             List<UUID> uuids = new List<UUID>();
 
             // Formerly, this used to check the region UUID.
diff --git a/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs b/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
index 241cac0..916148b 100644
--- a/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
+++ b/OpenSim/Region/Framework/Scenes/AsyncSceneObjectGroupDeleter.cs
@@ -111,11 +111,11 @@ namespace OpenSim.Region.Framework.Scenes
         
         private void InventoryRunDeleteTimer(object sender, ElapsedEventArgs e)
         {
-            m_log.Debug("[SCENE]: Starting send to inventory loop");
+            m_log.Debug("[ASYNC DELETER]: Starting send to inventory loop");
             
             while (InventoryDeQueueAndDelete())
             {
-                //m_log.Debug("[SCENE]: Sent item successfully to inventory, continuing...");
+                //m_log.Debug("[ASYNC DELETER]: Sent item successfully to inventory, continuing...");
             }
         }
 
@@ -137,7 +137,7 @@ namespace OpenSim.Region.Framework.Scenes
                         x = m_inventoryDeletes.Dequeue();
 
                         m_log.DebugFormat(
-                            "[SCENE]: Sending object to user's inventory, {0} item(s) remaining.", left);
+                            "[ASYNC DELETER]: Sending object to user's inventory, {0} item(s) remaining.", left);
                         
                         try
                         {
@@ -152,7 +152,8 @@ namespace OpenSim.Region.Framework.Scenes
                         }
                         catch (Exception e)
                         {
-                            m_log.DebugFormat("Exception background sending object: " + e);
+                            m_log.ErrorFormat(
+                                "[ASYNC DELETER]: Exception background sending object: {0}{1}", e.Message, e.StackTrace);
                         }
                         
                         return true;
@@ -164,12 +165,16 @@ namespace OpenSim.Region.Framework.Scenes
                 // We can't put the object group details in here since the root part may have disappeared (which is where these sit).
                 // FIXME: This needs to be fixed.
                 m_log.ErrorFormat(
-                    "[SCENE]: Queued sending of scene object to agent {0} {1} failed: {2}",
-                    (x != null ? x.remoteClient.Name : "unavailable"), (x != null ? x.remoteClient.AgentId.ToString() : "unavailable"), e.ToString());
+                    "[ASYNC DELETER]: Queued sending of scene object to agent {0} {1} failed: {2} {3}",
+                    (x != null ? x.remoteClient.Name : "unavailable"), 
+                    (x != null ? x.remoteClient.AgentId.ToString() : "unavailable"), 
+                    e.Message, 
+                    e.StackTrace);
             }
 
-            m_log.Debug("[SCENE]: No objects left in inventory send queue.");
+            m_log.Debug("[ASYNC DELETER]: No objects left in inventory send queue.");
+            
             return false;
         }
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/Framework/Scenes/EntityBase.cs b/OpenSim/Region/Framework/Scenes/EntityBase.cs
index e183f9d..6fd38e5 100644
--- a/OpenSim/Region/Framework/Scenes/EntityBase.cs
+++ b/OpenSim/Region/Framework/Scenes/EntityBase.cs
@@ -69,6 +69,7 @@ namespace OpenSim.Region.Framework.Scenes
         public bool IsDeleted
         {
             get { return m_isDeleted; }
+            set { m_isDeleted = value; }
         }
         protected bool m_isDeleted;
 
diff --git a/OpenSim/Region/Framework/Scenes/EventManager.cs b/OpenSim/Region/Framework/Scenes/EventManager.cs
index d4e2736..3fae5e6 100644
--- a/OpenSim/Region/Framework/Scenes/EventManager.cs
+++ b/OpenSim/Region/Framework/Scenes/EventManager.cs
@@ -688,7 +688,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public void TriggerOnBackup(IRegionDataStore dstore)
+        public void TriggerOnBackup(IRegionDataStore dstore, bool forced)
         {
             OnBackupDelegate handlerOnAttach = OnBackup;
             if (handlerOnAttach != null)
@@ -697,7 +697,7 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     try
                     {
-                        d(dstore, false);
+                        d(dstore, forced);
                     }
                     catch (Exception e)
                     {
diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index 5ee8955..ccbd880 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -1719,7 +1719,7 @@ namespace OpenSim.Region.Framework.Scenes
         public virtual void DeRezObject(IClientAPI remoteClient, uint localID,
                 UUID groupID, DeRezAction action, UUID destinationID)
         {
-            DeRezObjects(remoteClient, new List<uint>() { localID} , groupID, action, destinationID);
+            DeRezObjects(remoteClient, new List<uint>() { localID }, groupID, action, destinationID);
         }
 
         public virtual void DeRezObjects(IClientAPI remoteClient, List<uint> localIDs,
@@ -1764,11 +1764,6 @@ namespace OpenSim.Region.Framework.Scenes
                 deleteIDs.Add(localID);
                 deleteGroups.Add(grp);
 
-                // Force a database backup/update on this SceneObjectGroup
-                // So that we know the database is upto date,
-                // for when deleting the object from it
-                ForceSceneObjectBackup(grp);
-
                 if (remoteClient == null)
                 {
                     // Autoreturn has a null client. Nothing else does. So
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 94a9dab..6b71426 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -1562,18 +1562,22 @@ namespace OpenSim.Region.Framework.Scenes
         /// </summary>
         private void BackupWaitCallback(object o)
         {
-            Backup();
+            Backup(false);
         }
-
+        
         /// <summary>
         /// Backup the scene.  This acts as the main method of the backup thread.
         /// </summary>
+        /// <param name="forced">
+        /// If true, then any changes that have not yet been persisted are persisted.  If false,
+        /// then the persistence decision is left to the backup code (in some situations, such as object persistence,
+        /// it's much more efficient to backup multiple changes at once rather than every single one).
         /// <returns></returns>
-        public void Backup()
+        public void Backup(bool forced)
         {
             lock (m_returns)
             {
-                EventManager.TriggerOnBackup(m_storageManager.DataStore);
+                EventManager.TriggerOnBackup(m_storageManager.DataStore, forced);
                 m_backingup = false;
 
                 foreach (KeyValuePair<UUID, ReturnInfo> ret in m_returns)
@@ -2155,7 +2159,7 @@ namespace OpenSim.Region.Framework.Scenes
 //                rootPart.PhysActor = null;
 //            }
 
-            if (UnlinkSceneObject(group.UUID, false))
+            if (UnlinkSceneObject(group, false))
             {
                 EventManager.TriggerObjectBeingRemovedFromScene(group);
                 EventManager.TriggerParcelPrimCountTainted();
@@ -2170,18 +2174,25 @@ namespace OpenSim.Region.Framework.Scenes
         /// Unlink the given object from the scene.  Unlike delete, this just removes the record of the object - the
         /// object itself is not destroyed.
         /// </summary>
-        /// <param name="uuid">Id of object.</param>
+        /// <param name="so">The scene object.</param>
+        /// <param name="softDelete">If true, only deletes from scene, but keeps the object in the database.</param>
         /// <returns>true if the object was in the scene, false if it was not</returns>
-        /// <param name="softDelete">If true, only deletes from scene, but keeps object in database.</param>
-        public bool UnlinkSceneObject(UUID uuid, bool softDelete)
+        public bool UnlinkSceneObject(SceneObjectGroup so, bool softDelete)
         {
-            if (m_sceneGraph.DeleteSceneObject(uuid, softDelete))
+            if (m_sceneGraph.DeleteSceneObject(so.UUID, softDelete))
             {
                 if (!softDelete)
                 {
-                    m_storageManager.DataStore.RemoveObject(uuid,
-                                                            m_regInfo.RegionID);
+                    // Force a database update so that the scene object group ID is accurate.  It's possible that the
+                    // group has recently been delinked from another group but that this change has not been persisted
+                    // to the DB.
+                    ForceSceneObjectBackup(so);
+                    so.DetachFromBackup();                                
+                    m_storageManager.DataStore.RemoveObject(so.UUID, m_regInfo.RegionID);
                 }
+                                    
+                // We need to keep track of this state in case this group is still queued for further backup.
+                so.IsDeleted = true;                
 
                 return true;
             }
@@ -2212,7 +2223,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 catch (Exception)
                 {
-                    m_log.Warn("[DATABASE]: exception when trying to remove the prim that crossed the border.");
+                    m_log.Warn("[SCENE]: exception when trying to remove the prim that crossed the border.");
                 }
                 return;
             }
@@ -2229,7 +2240,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 catch (Exception)
                 {
-                    m_log.Warn("[DATABASE]: exception when trying to return the prim that crossed the border.");
+                    m_log.Warn("[SCENE]: exception when trying to return the prim that crossed the border.");
                 }
                 return;
             }
diff --git a/OpenSim/Region/Framework/Scenes/SceneManager.cs b/OpenSim/Region/Framework/Scenes/SceneManager.cs
index 3b84734..86ba2aa 100644
--- a/OpenSim/Region/Framework/Scenes/SceneManager.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneManager.cs
@@ -300,7 +300,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void BackupCurrentScene()
         {
-            ForEachCurrentScene(delegate(Scene scene) { scene.Backup(); });
+            ForEachCurrentScene(delegate(Scene scene) { scene.Backup(true); });
         }
 
         public bool TrySetCurrentScene(string regionName)
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 5a586d4..470fdd7 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -1556,9 +1556,14 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         /// <summary>
-        /// Delete this group from its scene and tell all the scene presences about that deletion.
+        /// Delete this group from its scene.  
         /// </summary>
-        /// <param name="silent">Broadcast deletions to all clients.</param>
+        /// 
+        /// This only handles the in-world consequences of deletion (e.g. any avatars sitting on it are forcibly stood
+        /// up and all avatars receive notification of its removal.  Removal of the scene object from database backup
+        /// must be handled by the caller.
+        /// 
+        /// <param name="silent">If true then deletion is not broadcast to clients</param>
         public void DeleteGroup(bool silent)
         {
             // We need to keep track of this state in case this group is still queued for backup.
@@ -1729,14 +1734,21 @@ namespace OpenSim.Region.Framework.Scenes
         public virtual void ProcessBackup(IRegionDataStore datastore, bool forcedBackup)
         {
             if (!m_isBackedUp)
+            {
+//                m_log.DebugFormat(
+//                    "[WATER WARS]: Ignoring backup of {0} {1} since object is not marked to be backed up", Name, UUID);                
                 return;
-
-            // Since this is the top of the section of call stack for backing up a particular scene object, don't let
-            // any exception propogate upwards.
+            }
 
             if (IsDeleted || UUID == UUID.Zero)
+            {
+//                m_log.DebugFormat(
+//                    "[WATER WARS]: Ignoring backup of {0} {1} since object is marked as already deleted", Name, UUID);
                 return;
+            }
 
+            // Since this is the top of the section of call stack for backing up a particular scene object, don't let
+            // any exception propogate upwards.            
             try
             {
                 if (!m_scene.ShuttingDown || // if shutting down then there will be nothing to handle the return so leave till next restart
@@ -1772,7 +1784,7 @@ namespace OpenSim.Region.Framework.Scenes
                 if (HasGroupChanged)
                 {
                     // don't backup while it's selected or you're asking for changes mid stream.
-                    if ((isTimeToPersist()) || (forcedBackup))
+                    if (isTimeToPersist() || forcedBackup)
                     {
                      //   m_log.DebugFormat(
                      //       "[SCENE]: Storing {0}, {1} in {2}",
@@ -1795,19 +1807,19 @@ namespace OpenSim.Region.Framework.Scenes
 
                         backup_group = null;
                     }
-    //                else
-    //                {
-    //                    m_log.DebugFormat(
-    //                        "[SCENE]: Did not update persistence of object {0} {1}, selected = {2}",
-    //                        Name, UUID, IsSelected);
-    //                }
+//                    else
+//                    {
+//                        m_log.DebugFormat(
+//                            "[SCENE]: Did not update persistence of object {0} {1}, selected = {2}",
+//                            Name, UUID, IsSelected);
+//                    }
                 }
             }
             catch (Exception e)
             {
                 m_log.ErrorFormat(
-                    "[SCENE]: Storing of {0}, {1} in {2} failed with exception {3}\n\t{4}", 
-                    Name, UUID, m_scene.RegionInfo.RegionName, e, e.StackTrace);
+                    "[SCENE]: Storing of {0}, {1} in {2} failed with exception {3}{4}", 
+                    Name, UUID, m_scene.RegionInfo.RegionName, e.Message, e.StackTrace);
             }
         }
 
@@ -2672,7 +2684,7 @@ namespace OpenSim.Region.Framework.Scenes
                 part.ClearUndoState();
             }
 
-            m_scene.UnlinkSceneObject(objectGroup.UUID, true);
+            m_scene.UnlinkSceneObject(objectGroup, true);
             objectGroup.m_isDeleted = true;
 
             objectGroup.lockPartsForWrite(true);
diff --git a/OpenSim/Region/Framework/Scenes/Tests/BorderTests.cs b/OpenSim/Region/Framework/Scenes/Tests/BorderTests.cs
index e140cd5..3a0dd00 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/BorderTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/BorderTests.cs
@@ -28,20 +28,21 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using NUnit.Framework;
 using OpenMetaverse;
 using OpenSim.Region.Framework.Scenes;
-
-using NUnit.Framework;
+using OpenSim.Tests.Common;
 
 namespace OpenSim.Region.Framework.Scenes.Tests
 {
     [TestFixture]
     public class BorderTests
     {
-
         [Test]
         public void TestCross()
         {
+            TestHelper.InMethod();
+            
             List<Border> testborders = new List<Border>();
 
             Border NorthBorder = new Border();
@@ -75,8 +76,6 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             position = new Vector3(200,280,21);
             Assert.That(NorthBorder.TestCross(position));
 
-
-
             // Test automatic border crossing
             // by setting the border crossing aabb to be the whole region
             position = new Vector3(25,25,21); // safely within one 256m region
@@ -95,12 +94,13 @@ namespace OpenSim.Region.Framework.Scenes.Tests
 
             WestBorder.BorderLine = new Vector3(0, 256, 255); // automatic border cross in the region
             Assert.That(WestBorder.TestCross(position));
-
         }
 
         [Test]
         public void TestCrossSquare512()
         {
+            TestHelper.InMethod();
+            
             List<Border> testborders = new List<Border>();
 
             Border NorthBorder = new Border();
@@ -174,12 +174,13 @@ namespace OpenSim.Region.Framework.Scenes.Tests
                     Assert.That(!b.TestCross(position));
 
             }
-
         }
 
         [Test]
         public void TestCrossRectangle512x256()
         {
+            TestHelper.InMethod();
+            
             List<Border> testborders = new List<Border>();
 
             Border NorthBorder = new Border();
@@ -258,6 +259,8 @@ namespace OpenSim.Region.Framework.Scenes.Tests
         [Test]
         public void TestCrossOdd512x512w256hole()
         {
+            TestHelper.InMethod();
+            
             List<Border> testborders = new List<Border>();
             //   512____
             //      |  |
diff --git a/OpenSim/Region/Framework/Scenes/Tests/EntityManagerTests.cs b/OpenSim/Region/Framework/Scenes/Tests/EntityManagerTests.cs
index 3e2a2af..b3c3e22 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/EntityManagerTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/EntityManagerTests.cs
@@ -53,7 +53,6 @@ namespace OpenSim.Region.Framework.Scenes.Tests
         public void T010_AddObjects()
         {
             TestHelper.InMethod();
-            // Console.WriteLine("Beginning test {0}", MethodBase.GetCurrentMethod());
             
             random = new Random();
             SceneObjectGroup found;
@@ -89,7 +88,6 @@ namespace OpenSim.Region.Framework.Scenes.Tests
         public void T011_ThreadAddRemoveTest()
         {
             TestHelper.InMethod();
-            // Console.WriteLine("Beginning test {0}", MethodBase.GetCurrentMethod());
             
             // This test adds and removes with mutiple threads, attempting to break the 
             // uuid and localid dictionary coherence.
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
index 0b7608d..e3ef263 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
@@ -26,13 +26,13 @@
  */
 
 using System;
+using System.Collections.Generic;
 using System.Reflection;
 using NUnit.Framework;
 using NUnit.Framework.SyntaxHelpers;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Communications;
-
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Tests.Common;
 using OpenSim.Tests.Common.Mock;
@@ -260,5 +260,86 @@ namespace OpenSim.Region.Framework.Scenes.Tests
                 && (part4.RotationOffset.W - compareQuaternion.W < 0.00003),
                 "Badness 3");
         }
+        
+        /// <summary>
+        /// Test that a new scene object which is already linked is correctly persisted to the persistence layer.
+        /// </summary>
+        [Test]
+        public void TestNewSceneObjectLinkPersistence()
+        {
+            TestHelper.InMethod();
+            //log4net.Config.XmlConfigurator.Configure();
+            
+            TestScene scene = SceneSetupHelpers.SetupScene();            
+            
+            string rootPartName = "rootpart";
+            UUID rootPartUuid = new UUID("00000000-0000-0000-0000-000000000001");
+            string linkPartName = "linkpart";
+            UUID linkPartUuid = new UUID("00000000-0000-0000-0001-000000000000");
+
+            SceneObjectPart rootPart
+                = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
+                    { Name = rootPartName, UUID = rootPartUuid };
+            SceneObjectPart linkPart
+                = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
+                    { Name = linkPartName, UUID = linkPartUuid };            
+
+            SceneObjectGroup sog = new SceneObjectGroup(rootPart);
+            sog.AddPart(linkPart);            
+            scene.AddNewSceneObject(sog, true);           
+            
+            // In a test, we have to crank the backup handle manually.  Normally this would be done by the timer invoked
+            // scene backup thread.
+            scene.Backup(true);
+            
+            List<SceneObjectGroup> storedObjects = scene.StorageManager.DataStore.LoadObjects(scene.RegionInfo.RegionID);
+            
+            Assert.That(storedObjects.Count, Is.EqualTo(1));
+            Assert.That(storedObjects[0].Children.Count, Is.EqualTo(2));
+            Assert.That(storedObjects[0].Children.ContainsKey(rootPartUuid));
+            Assert.That(storedObjects[0].Children.ContainsKey(linkPartUuid));
+        }
+        
+        /// <summary>
+        /// Test that a delink of a previously linked object is correctly persisted to the database
+        /// </summary>
+        [Test]
+        public void TestDelinkPersistence()
+        {
+            TestHelper.InMethod();
+            //log4net.Config.XmlConfigurator.Configure();
+            
+            TestScene scene = SceneSetupHelpers.SetupScene();            
+            
+            string rootPartName = "rootpart";
+            UUID rootPartUuid = new UUID("00000000-0000-0000-0000-000000000001");
+            string linkPartName = "linkpart";
+            UUID linkPartUuid = new UUID("00000000-0000-0000-0001-000000000000");
+
+            SceneObjectPart rootPart
+                = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
+                    { Name = rootPartName, UUID = rootPartUuid };
+            SceneObjectPart linkPart
+                = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
+                    { Name = linkPartName, UUID = linkPartUuid };            
+
+            SceneObjectGroup sog = new SceneObjectGroup(rootPart);
+            sog.AddPart(linkPart);            
+            scene.AddNewSceneObject(sog, true);           
+            
+            // In a test, we have to crank the backup handle manually.  Normally this would be done by the timer invoked
+            // scene backup thread.
+            scene.Backup(true);
+                        
+            // These changes should occur immediately without waiting for a backup pass
+            SceneObjectGroup groupToDelete = sog.DelinkFromGroup(linkPart, false);
+            scene.DeleteSceneObject(groupToDelete, false);  
+            
+            List<SceneObjectGroup> storedObjects = scene.StorageManager.DataStore.LoadObjects(scene.RegionInfo.RegionID);
+            
+            Assert.That(storedObjects.Count, Is.EqualTo(1));
+            Assert.That(storedObjects[0].Children.Count, Is.EqualTo(1));
+            Assert.That(storedObjects[0].Children.ContainsKey(rootPartUuid));
+        }
     }
 }
diff --git a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
index e39a362..ab5968c 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
@@ -173,6 +173,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
 
             Assert.That(neighbours.Count, Is.EqualTo(2));
         }
+        
         public void fixNullPresence()
         {
             string firstName = "testfirstname";
@@ -389,8 +390,6 @@ namespace OpenSim.Region.Framework.Scenes.Tests
 
         public static string GetRandomCapsObjectPath()
         {
-            TestHelper.InMethod();
-
             UUID caps = UUID.Random();
             string capsPath = caps.ToString();
             capsPath = capsPath.Remove(capsPath.Length - 4, 4);
@@ -429,4 +428,4 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             return name.ToString();
         }
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/OptionalModules/ContentManagementSystem/CMModel.cs b/OpenSim/Region/OptionalModules/ContentManagementSystem/CMModel.cs
index e5fcb54..fd59138 100644
--- a/OpenSim/Region/OptionalModules/ContentManagementSystem/CMModel.cs
+++ b/OpenSim/Region/OptionalModules/ContentManagementSystem/CMModel.cs
@@ -300,7 +300,7 @@ namespace OpenSim.Region.OptionalModules.ContentManagement
                 }
             }
             m_log.Info("[CMMODEL]: Scheduling a backup of new scene object groups to backup.");
-            scene.Backup();
+            scene.Backup(true);
         }
 
         /// <summary>
diff --git a/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs b/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
index 672109b..122ad40 100644
--- a/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
@@ -133,7 +133,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
                 m_firstEmptyCompileQueue = false;
                 m_oarFileLoading = false;
 
-                m_scene.Backup();
+                m_scene.Backup(false);
 
                 c.From = "RegionReady";
                 if (m_lastOarLoadedOk) 
diff --git a/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs b/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs
new file mode 100644
index 0000000..2a055cc
--- /dev/null
+++ b/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs
@@ -0,0 +1,203 @@
+/*
+ * 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.Reflection;
+using System.Collections.Generic;
+using log4net;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Data.Null
+{
+    /// <summary>
+    /// Mock region data plugin.  This obeys the api contract for persistence but stores everything in memory, so that
+    /// tests can check correct persistence.
+    /// </summary>
+    public class NullDataStore : IRegionDataStore
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        
+        protected Dictionary<UUID, RegionSettings> m_regionSettings = new Dictionary<UUID, RegionSettings>();
+        protected Dictionary<UUID, SceneObjectPart> m_sceneObjectParts = new Dictionary<UUID, SceneObjectPart>();
+        protected Dictionary<UUID, ICollection<TaskInventoryItem>> m_primItems 
+            = new Dictionary<UUID, ICollection<TaskInventoryItem>>();
+        protected Dictionary<UUID, double[,]> m_terrains = new Dictionary<UUID, double[,]>();
+        protected Dictionary<UUID, LandData> m_landData = new Dictionary<UUID, LandData>();
+        
+        public void Initialise(string dbfile)
+        {
+            return;
+        }
+
+        public void Dispose()
+        {
+        }
+
+        public void StoreRegionSettings(RegionSettings rs)
+        {
+            m_regionSettings[rs.RegionUUID] = rs;
+        }
+        
+        public RegionLightShareData LoadRegionWindlightSettings(UUID regionUUID)
+        {
+            //This connector doesn't support the windlight module yet
+            //Return default LL windlight settings
+            return new RegionLightShareData();
+        }
+        
+        public void StoreRegionWindlightSettings(RegionLightShareData wl)
+        {
+            //This connector doesn't support the windlight module yet
+        }
+        
+        public RegionSettings LoadRegionSettings(UUID regionUUID)
+        {
+            RegionSettings rs = null;
+            m_regionSettings.TryGetValue(regionUUID, out rs);
+            return rs;
+        }
+
+        public void StoreObject(SceneObjectGroup obj, UUID regionUUID)
+        {
+            // We can't simply store groups here because on delinking, OpenSim will not update the original group
+            // directly.  Rather, the newly delinked parts will be updated to be in their own scene object group
+            // Therefore, we need to store parts rather than groups.
+            foreach (SceneObjectPart prim in obj.Children.Values)
+            {
+                m_log.DebugFormat(
+                    "[MOCK REGION DATA PLUGIN]: Storing part {0} {1} in object {2} {3} in region {4}", 
+                    prim.Name, prim.UUID, obj.Name, obj.UUID, regionUUID);
+                            
+                m_sceneObjectParts[prim.UUID] = prim;
+            }
+        }
+
+        public void RemoveObject(UUID obj, UUID regionUUID)
+        {           
+            // All parts belonging to the object with the uuid are removed.
+            List<SceneObjectPart> parts = new List<SceneObjectPart>(m_sceneObjectParts.Values);
+            foreach (SceneObjectPart part in parts)
+            {
+                if (part.ParentGroup.UUID == obj)
+                {
+                    m_log.DebugFormat(
+                        "[MOCK REGION DATA PLUGIN]: Removing part {0} {1} as part of object {2} from {3}", 
+                        part.Name, part.UUID, obj, regionUUID);                    
+                    m_sceneObjectParts.Remove(part.UUID);
+                }
+            }
+        }
+
+        // see IRegionDatastore
+        public void StorePrimInventory(UUID primID, ICollection<TaskInventoryItem> items)
+        {
+            m_primItems[primID] = items;
+        }
+
+        public List<SceneObjectGroup> LoadObjects(UUID regionUUID)
+        {
+            Dictionary<UUID, SceneObjectGroup> objects = new Dictionary<UUID, SceneObjectGroup>();
+            
+            // Create all of the SOGs from the root prims first
+            foreach (SceneObjectPart prim in m_sceneObjectParts.Values)
+            {
+                if (prim.IsRoot)
+                {
+                    m_log.DebugFormat(
+                        "[MOCK REGION DATA PLUGIN]: Loading root part {0} {1} in {2}", prim.Name, prim.UUID, regionUUID);                               
+                    objects[prim.UUID] = new SceneObjectGroup(prim);
+                }
+            }
+
+            // Add all of the children objects to the SOGs
+            foreach (SceneObjectPart prim in m_sceneObjectParts.Values)
+            {
+                SceneObjectGroup sog;
+                if (prim.UUID != prim.ParentUUID)
+                {
+                    if (objects.TryGetValue(prim.ParentUUID, out sog))
+                    {
+                        int originalLinkNum = prim.LinkNum;
+
+                        sog.AddPart(prim);
+
+                        // SceneObjectGroup.AddPart() tries to be smart and automatically set the LinkNum.
+                        // We override that here
+                        if (originalLinkNum != 0)
+                            prim.LinkNum = originalLinkNum;
+                    }
+                    else
+                    {
+                        m_log.WarnFormat(
+                            "[MOCK REGION DATA PLUGIN]: Database contains an orphan child prim {0} {1} in region {2} pointing to missing parent {3}.  This prim will not be loaded.",
+                            prim.Name, prim.UUID, regionUUID, prim.ParentUUID);
+                    }
+                }
+            }
+            
+            // TODO: Load items.  This is assymetric - we store items as a separate method but don't retrieve them that
+            // way!
+            
+            return new List<SceneObjectGroup>(objects.Values);
+        }
+
+        public void StoreTerrain(double[,] ter, UUID regionID)
+        {
+            m_terrains[regionID] = ter;
+        }
+
+        public double[,] LoadTerrain(UUID regionID)
+        {
+            if (m_terrains.ContainsKey(regionID))
+                return m_terrains[regionID];
+            else
+                return null;
+        }
+
+        public void RemoveLandObject(UUID globalID)
+        {
+            if (m_landData.ContainsKey(globalID))
+                m_landData.Remove(globalID);
+        }
+
+        public void StoreLandObject(ILandObject land)
+        {
+            m_landData[land.LandData.GlobalID] = land.LandData;
+        }
+
+        public List<LandData> LoadLandObjects(UUID regionUUID)
+        {
+            return new List<LandData>(m_landData.Values);
+        }
+
+        public void Shutdown()
+        {
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Tests/Common/Mock/TestInventoryDataPlugin.cs b/OpenSim/Tests/Common/Mock/TestInventoryDataPlugin.cs
index b70b47d..b47ad5d 100644
--- a/OpenSim/Tests/Common/Mock/TestInventoryDataPlugin.cs
+++ b/OpenSim/Tests/Common/Mock/TestInventoryDataPlugin.cs
@@ -42,7 +42,7 @@ namespace OpenSim.Tests.Common.Mock
     /// </summary>
     public class TestInventoryDataPlugin : IInventoryDataPlugin
     {
-        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         
         /// <value>
         /// Inventory folders
diff --git a/OpenSim/Tests/Common/Mock/TestScene.cs b/OpenSim/Tests/Common/Mock/TestScene.cs
index 01f2c14..615e519 100644
--- a/OpenSim/Tests/Common/Mock/TestScene.cs
+++ b/OpenSim/Tests/Common/Mock/TestScene.cs
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (c) Contributors, http://opensimulator.org/
  * See CONTRIBUTORS.TXT for a full list of copyright holders.
  *
@@ -29,7 +29,6 @@ using System;
 using Nini.Config;
 using OpenSim.Framework;
 using OpenSim.Framework.Communications;
-
 using OpenSim.Framework.Servers;
 using OpenSim.Region.Framework;
 using OpenSim.Region.Framework.Scenes;
@@ -49,6 +48,11 @@ namespace OpenSim.Tests.Common.Mock
         }
         
         /// <summary>
+        /// Allow retrieval for test check purposes
+        /// </summary>
+        public StorageManager StorageManager { get { return m_storageManager; } }
+        
+        /// <summary>
         /// Temporarily override session authentication for tests (namely teleport).
         /// </summary>
         /// 
diff --git a/OpenSim/Tests/Common/Setup/SceneSetupHelpers.cs b/OpenSim/Tests/Common/Setup/SceneSetupHelpers.cs
index d9ded2d..9318a27 100644
--- a/OpenSim/Tests/Common/Setup/SceneSetupHelpers.cs
+++ b/OpenSim/Tests/Common/Setup/SceneSetupHelpers.cs
@@ -157,7 +157,7 @@ namespace OpenSim.Tests.Common.Setup
             AgentCircuitManager acm = new AgentCircuitManager();
             SceneCommunicationService scs = new SceneCommunicationService();
 
-            StorageManager sm = new StorageManager("OpenSim.Data.Null.dll", "", "");
+            StorageManager sm = new StorageManager("OpenSim.Tests.Common.dll", "", "");
             IConfigSource configSource = new IniConfigSource();
 
             TestScene testScene = new TestScene(
diff --git a/OpenSim/Tests/Common/Setup/UserInventoryTestUtils.cs b/OpenSim/Tests/Common/Setup/UserInventoryTestUtils.cs
index c57363a..915af7e 100644
--- a/OpenSim/Tests/Common/Setup/UserInventoryTestUtils.cs
+++ b/OpenSim/Tests/Common/Setup/UserInventoryTestUtils.cs
@@ -52,7 +52,7 @@ namespace OpenSim.Tests.Common
             InventoryFolderBase objsFolder = scene.InventoryService.GetFolderForType(userId, AssetType.Object);
             
             item.Folder = objsFolder.ID;
-            scene.AddInventoryItem(userId, item);            
+            scene.AddInventoryItem(item);            
             
             return item;
         }