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diff --git a/OpenSim/Region/OptionalModules/ContentManagementSystem/CMEntityCollection.cs b/OpenSim/Region/OptionalModules/ContentManagementSystem/CMEntityCollection.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 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.
+ */
+
+#region Header
+
+// CMEntityCollection.cs created with MonoDevelop
+// User: bongiojp at 10:09 AM 7/7/2008
+//
+// Creates, Deletes, Stores ContentManagementEntities
+//
+
+#endregion Header
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Threading;
+
+using OpenMetaverse;
+
+using Nini.Config;
+
+using OpenSim;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Physics.Manager;
+
+using log4net;
+
+namespace OpenSim.Region.OptionalModules.ContentManagement
+{
+    public class CMEntityCollection
+    {
+        #region Fields
+
+        //    private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+        // Any ContentManagementEntities that represent old versions of current SceneObjectGroups or
+        // old versions of deleted SceneObjectGroups will be stored in this hash table.
+        // The UUID keys are from the SceneObjectGroup RootPart UUIDs
+        protected Hashtable m_CMEntityHash = Hashtable.Synchronized(new Hashtable()); //UUID to ContentManagementEntity
+
+        // SceneObjectParts that have not been revisioned will be given green auras stored in this hashtable
+        // The UUID keys are from the SceneObjectPart that they are supposed to be on.
+        protected Hashtable m_NewlyCreatedEntityAura = Hashtable.Synchronized(new Hashtable()); //UUID to AuraMetaEntity
+
+        #endregion Fields
+
+        #region Constructors
+
+        public CMEntityCollection()
+        {
+        }
+
+        #endregion Constructors
+
+        #region Public Properties
+
+        public Hashtable Auras
+        {
+            get {return m_NewlyCreatedEntityAura; }
+        }
+
+        public Hashtable Entities
+        {
+            get { return m_CMEntityHash; }
+        }
+
+        #endregion Public Properties
+
+        #region Public Methods
+
+        public bool AddAura(ContentManagementEntity aura)
+        {
+            if (m_NewlyCreatedEntityAura.ContainsKey(aura.UUID))
+                return false;
+            m_NewlyCreatedEntityAura.Add(aura.UUID, aura);
+            return true;
+        }
+
+        public bool AddEntity(ContentManagementEntity ent)
+        {
+            if (m_CMEntityHash.ContainsKey(ent.UUID))
+                return false;
+            m_CMEntityHash.Add(ent.UUID, ent);
+            return true;
+        }
+
+        // Check if there are SceneObjectGroups in the list that do not have corresponding ContentManagementGroups in the CMEntityHash
+        public System.Collections.ArrayList CheckForMissingEntities(System.Collections.Generic.List<EntityBase> currList)
+        {
+            System.Collections.ArrayList missingList = new System.Collections.ArrayList();
+            SceneObjectGroup temp = null;
+            foreach (EntityBase currObj in currList)
+            {
+                if (!(currObj is SceneObjectGroup))
+                    continue;
+                temp = (SceneObjectGroup) currObj;
+
+                if (m_CMEntityHash.ContainsKey(temp.UUID))
+                {
+                    foreach (SceneObjectPart part in temp.Children.Values)
+                        if (!((ContentManagementEntity)m_CMEntityHash[temp.UUID]).HasChildPrim(part.UUID))
+                            missingList.Add(part);
+                }
+                else //Entire group is missing from revision. (and is a new part in region)
+                {
+                    foreach (SceneObjectPart part in temp.Children.Values)
+                        missingList.Add(part);
+                }
+            }
+            return missingList;
+        }
+
+        public void ClearAll()
+        {
+            m_CMEntityHash.Clear();
+            m_NewlyCreatedEntityAura.Clear();
+        }
+
+        // Old uuid and new sceneobjectgroup
+        public AuraMetaEntity CreateAuraForNewlyCreatedEntity(SceneObjectPart part)
+        {
+            AuraMetaEntity ent = new AuraMetaEntity(part.ParentGroup.Scene,
+                                                    part.GetWorldPosition(),
+                                                    MetaEntity.TRANSLUCENT,
+                                                    new Vector3(0,254,0),
+                                                    part.Scale
+                                                    );
+            m_NewlyCreatedEntityAura.Add(part.UUID, ent);
+            return ent;
+        }
+
+        // Old uuid and new sceneobjectgroup
+        public ContentManagementEntity CreateNewEntity(SceneObjectGroup group)
+        {
+            ContentManagementEntity ent = new ContentManagementEntity(group, false);
+            m_CMEntityHash.Add(group.UUID, ent);
+            return ent;
+        }
+
+        public ContentManagementEntity CreateNewEntity(String xml, Scene scene)
+        {
+            ContentManagementEntity ent = new ContentManagementEntity(xml, scene, false);
+            if (ent == null)
+                return null;
+            m_CMEntityHash.Add(ent.UnchangedEntity.UUID, ent);
+            return ent;
+        }
+
+        public bool RemoveEntity(UUID uuid)
+        {
+            if (!m_CMEntityHash.ContainsKey(uuid))
+                return false;
+            m_CMEntityHash.Remove(uuid);
+            return true;
+        }
+
+        public bool RemoveNewlyCreatedEntityAura(UUID uuid)
+        {
+            if (!m_NewlyCreatedEntityAura.ContainsKey(uuid))
+                return false;
+            m_NewlyCreatedEntityAura.Remove(uuid);
+            return true;
+        }
+
+        #endregion Public Methods
+    }
+}