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diff --git a/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs b/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs
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+++ b/OpenSim/Tests/Common/Mock/MockRegionDataPlugin.cs
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+/*
+ * 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
+{
+    public class NullDataService : ISimulationDataService
+    {
+        private NullDataStore m_store;
+
+        public NullDataService()
+        {
+            m_store = new NullDataStore();
+        }
+
+        public void StoreObject(SceneObjectGroup obj, UUID regionUUID)
+        {
+            m_store.StoreObject(obj, regionUUID);
+        }
+
+        public void RemoveObject(UUID uuid, UUID regionUUID)
+        {
+            m_store.RemoveObject(uuid, regionUUID);
+        }
+
+        public void StorePrimInventory(UUID primID, ICollection<TaskInventoryItem> items)
+        {
+            m_store.StorePrimInventory(primID, items);
+        }
+
+        public List<SceneObjectGroup> LoadObjects(UUID regionUUID)
+        {
+            return m_store.LoadObjects(regionUUID);
+        }
+
+        public void StoreTerrain(double[,] terrain, UUID regionID)
+        {
+            m_store.StoreTerrain(terrain, regionID);
+        }
+
+        public void StoreTerrain(TerrainData terrain, UUID regionID)
+        {
+            m_store.StoreTerrain(terrain, regionID);
+        }
+
+        public double[,] LoadTerrain(UUID regionID)
+        {
+            return m_store.LoadTerrain(regionID);
+        }
+
+        public TerrainData LoadTerrain(UUID regionID, int pSizeX, int pSizeY, int pSizeZ)
+        {
+            return m_store.LoadTerrain(regionID, pSizeX, pSizeY, pSizeZ);
+        }
+
+        public void StoreLandObject(ILandObject Parcel)
+        {
+            m_store.StoreLandObject(Parcel);
+        }
+
+        public void RemoveLandObject(UUID globalID)
+        {
+            m_store.RemoveLandObject(globalID);
+        }
+
+        public List<LandData> LoadLandObjects(UUID regionUUID)
+        {
+            return m_store.LoadLandObjects(regionUUID);
+        }
+
+        public void StoreRegionSettings(RegionSettings rs)
+        {
+            m_store.StoreRegionSettings(rs);
+        }
+
+        public RegionSettings LoadRegionSettings(UUID regionUUID)
+        {
+            return m_store.LoadRegionSettings(regionUUID);
+        }
+
+        public RegionLightShareData LoadRegionWindlightSettings(UUID regionUUID)
+        {
+            return m_store.LoadRegionWindlightSettings(regionUUID);
+        }
+
+        public void RemoveRegionWindlightSettings(UUID regionID)
+        {
+        }
+
+        public void StoreRegionWindlightSettings(RegionLightShareData wl)
+        {
+            m_store.StoreRegionWindlightSettings(wl);
+        }
+
+        public string LoadRegionEnvironmentSettings(UUID regionUUID)
+        {
+            return m_store.LoadRegionEnvironmentSettings(regionUUID);
+        }
+
+        public void StoreRegionEnvironmentSettings(UUID regionUUID, string settings)
+        {
+            m_store.StoreRegionEnvironmentSettings(regionUUID, settings);
+        }
+
+        public void RemoveRegionEnvironmentSettings(UUID regionUUID)
+        {
+            m_store.RemoveRegionEnvironmentSettings(regionUUID);
+        }
+
+        public void SaveExtra(UUID regionID, string name, string value)
+        {
+        }
+
+        public void RemoveExtra(UUID regionID, string name)
+        {
+        }
+
+        public Dictionary<string, string> GetExtra(UUID regionID)
+        {
+            return 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 : ISimulationDataStore
+    {
+//        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, TerrainData> m_terrains = new Dictionary<UUID, TerrainData>();
+        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 RemoveRegionWindlightSettings(UUID regionID)
+        {
+        }
+
+        public void StoreRegionWindlightSettings(RegionLightShareData wl)
+        {
+            //This connector doesn't support the windlight module yet
+        }
+
+        #region Environment Settings
+        public string LoadRegionEnvironmentSettings(UUID regionUUID)
+        {
+            //This connector doesn't support the Environment module yet
+            return string.Empty;
+        }
+
+        public void StoreRegionEnvironmentSettings(UUID regionUUID, string settings)
+        {
+            //This connector doesn't support the Environment module yet
+        }
+
+        public void RemoveRegionEnvironmentSettings(UUID regionUUID)
+        {
+            //This connector doesn't support the Environment module yet
+        }
+        #endregion
+
+        public RegionSettings LoadRegionSettings(UUID regionUUID)
+        {
+            RegionSettings rs = null;
+            m_regionSettings.TryGetValue(regionUUID, out rs);
+
+            if (rs == null)
+                rs = new RegionSettings();
+            
+            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.Parts)
+            {
+//                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);
+                }
+            }
+        }
+
+        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(TerrainData ter, UUID regionID)
+        {
+            m_terrains[regionID] = ter;
+        }
+
+        public void StoreTerrain(double[,] ter, UUID regionID)
+        {
+            m_terrains[regionID] = new HeightmapTerrainData(ter);
+        }
+
+        public TerrainData LoadTerrain(UUID regionID, int pSizeX, int pSizeY, int pSizeZ)
+        {
+            if (m_terrains.ContainsKey(regionID))
+                return m_terrains[regionID];
+            else
+                return null;
+        }
+
+        public double[,] LoadTerrain(UUID regionID)
+        {
+            if (m_terrains.ContainsKey(regionID))
+                return m_terrains[regionID].GetDoubles();
+            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()
+        {
+        }
+
+        public void SaveExtra(UUID regionID, string name, string value)
+        {
+        }
+
+        public void RemoveExtra(UUID regionID, string name)
+        {
+        }
+
+        public Dictionary<string, string> GetExtra(UUID regionID)
+        {
+            return null;
+        }
+    }
+}