Merge branch 'master' of https://github.com/MediaBrowser/MediaBrowser

23 files changed, 408 insertions, 433 deletions

diff --git a/MediaBrowser.Api/Library/LibraryService.cs b/MediaBrowser.Api/Library/LibraryService.cs
index f2867b595..9c68df771 100644
--- a/MediaBrowser.Api/Library/LibraryService.cs
+++ b/MediaBrowser.Api/Library/LibraryService.cs
@@ -104,13 +104,16 @@ namespace MediaBrowser.Api.Library
         /// </summary>
         private readonly IApplicationHost _appHost;
         private readonly ILibraryManager _libraryManager;
+        private readonly IUserManager _userManager;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="LibraryService" /> class.
         /// </summary>
         /// <param name="appHost">The app host.</param>
+        /// <param name="libraryManager">The library manager.</param>
+        /// <param name="userManager">The user manager.</param>
         /// <exception cref="System.ArgumentNullException">appHost</exception>
-        public LibraryService(IApplicationHost appHost, ILibraryManager libraryManager)
+        public LibraryService(IApplicationHost appHost, ILibraryManager libraryManager, IUserManager userManager)
         {
             if (appHost == null)
             {
@@ -119,6 +122,7 @@ namespace MediaBrowser.Api.Library
 
             _appHost = appHost;
             _libraryManager = libraryManager;
+            _userManager = userManager;
         }
 
         /// <summary>
@@ -133,7 +137,7 @@ namespace MediaBrowser.Api.Library
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true));
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetBaseItemDto(item, fields.ToList()).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetBaseItemDto(item, fields.ToList()).Result;
 
             return ToOptimizedResult(result);
         }
@@ -150,7 +154,7 @@ namespace MediaBrowser.Api.Library
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true));
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetBaseItemDto(item, fields.ToList()).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetBaseItemDto(item, fields.ToList()).Result;
 
             return ToOptimizedResult(result);
         }
@@ -167,7 +171,7 @@ namespace MediaBrowser.Api.Library
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true));
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetBaseItemDto(item, fields.ToList()).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetBaseItemDto(item, fields.ToList()).Result;
 
             return ToOptimizedResult(result);
         }
@@ -184,7 +188,7 @@ namespace MediaBrowser.Api.Library
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true));
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetBaseItemDto(item, fields.ToList()).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetBaseItemDto(item, fields.ToList()).Result;
 
             return ToOptimizedResult(result);
         }
diff --git a/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs b/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
index 8dc9cfd62..a0ad1fb2a 100644
--- a/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
+++ b/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
@@ -149,7 +149,7 @@ namespace MediaBrowser.Api.UserLibrary
                 return null;
             }
 
-            var dto = await new DtoBuilder(Logger, LibraryManager).GetBaseItemDto(item, user, fields).ConfigureAwait(false);
+            var dto = await new DtoBuilder(Logger, LibraryManager, UserManager).GetBaseItemDto(item, user, fields).ConfigureAwait(false);
 
             dto.ChildCount = stub.Item2();
 
diff --git a/MediaBrowser.Api/UserLibrary/ItemsService.cs b/MediaBrowser.Api/UserLibrary/ItemsService.cs
index 77b991a54..a74516fa2 100644
--- a/MediaBrowser.Api/UserLibrary/ItemsService.cs
+++ b/MediaBrowser.Api/UserLibrary/ItemsService.cs
@@ -179,7 +179,7 @@ namespace MediaBrowser.Api.UserLibrary
 
             var fields = GetItemFields(request).ToList();
 
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var returnItems = await Task.WhenAll(pagedItems.Select(i => dtoBuilder.GetBaseItemDto(i, user, fields))).ConfigureAwait(false);
 
@@ -241,12 +241,15 @@ namespace MediaBrowser.Api.UserLibrary
         /// <returns>IEnumerable{BaseItem}.</returns>
         private IEnumerable<BaseItem> ApplyFilter(IEnumerable<BaseItem> items, ItemFilter filter, User user)
         {
+            // Avoids implicitly captured closure
+            var currentUser = user;
+
             switch (filter)
             {
                 case ItemFilter.Likes:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata != null && userdata.Likes.HasValue && userdata.Likes.Value;
                     });
@@ -254,7 +257,7 @@ namespace MediaBrowser.Api.UserLibrary
                 case ItemFilter.Dislikes:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata != null && userdata.Likes.HasValue && !userdata.Likes.Value;
                     });
@@ -262,18 +265,18 @@ namespace MediaBrowser.Api.UserLibrary
                 case ItemFilter.IsFavorite:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata != null && userdata.IsFavorite;
                     });
 
                 case ItemFilter.IsRecentlyAdded:
-                    return items.Where(item => item.IsRecentlyAdded(user));
+                    return items.Where(item => item.IsRecentlyAdded(currentUser));
 
                 case ItemFilter.IsResumable:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata != null && userdata.PlaybackPositionTicks > 0;
                     });
@@ -281,7 +284,7 @@ namespace MediaBrowser.Api.UserLibrary
                 case ItemFilter.IsPlayed:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata != null && userdata.PlayCount > 0;
                     });
@@ -289,7 +292,7 @@ namespace MediaBrowser.Api.UserLibrary
                 case ItemFilter.IsUnplayed:
                     return items.Where(item =>
                     {
-                        var userdata = item.GetUserData(user, false);
+                        var userdata = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
                         return userdata == null || userdata.PlayCount == 0;
                     });
diff --git a/MediaBrowser.Api/UserLibrary/UserLibraryService.cs b/MediaBrowser.Api/UserLibrary/UserLibraryService.cs
index 5c9c8e1f3..d1f963a9e 100644
--- a/MediaBrowser.Api/UserLibrary/UserLibraryService.cs
+++ b/MediaBrowser.Api/UserLibrary/UserLibraryService.cs
@@ -1,4 +1,5 @@
-using MediaBrowser.Controller.Entities;
+using System.Threading;
+using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Movies;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Connectivity;
@@ -385,7 +386,7 @@ namespace MediaBrowser.Api.UserLibrary
 
             var movie = (Movie)item;
 
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var items = movie.SpecialFeatures.Select(i => dtoBuilder.GetBaseItemDto(i, user, fields)).AsParallel().Select(t => t.Result).ToList();
 
@@ -406,7 +407,7 @@ namespace MediaBrowser.Api.UserLibrary
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true)).ToList();
 
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var items = item.LocalTrailers.Select(i => dtoBuilder.GetBaseItemDto(i, user, fields)).AsParallel().Select(t => t.Result).ToList();
 
@@ -427,7 +428,7 @@ namespace MediaBrowser.Api.UserLibrary
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true)).ToList();
 
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var result = dtoBuilder.GetBaseItemDto(item, user, fields).Result;
 
@@ -443,7 +444,7 @@ namespace MediaBrowser.Api.UserLibrary
             // Get everything
             var fields = Enum.GetNames(typeof(ItemFields)).Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true)).ToList();
 
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var result = dtoBuilder.GetBaseItemDto(item, user, fields).Result;
 
@@ -486,7 +487,7 @@ namespace MediaBrowser.Api.UserLibrary
             // Serialize to json and then back so that the core doesn't see the request dto type
             var displayPreferences = _jsonSerializer.DeserializeFromString<DisplayPreferences>(_jsonSerializer.SerializeToString(request));
 
-            var task = _libraryManager.SaveDisplayPreferencesForFolder(user, folder, displayPreferences);
+            var task = _userManager.SaveDisplayPreferences(user.Id, folder.DisplayPreferencesId, displayPreferences, CancellationToken.None);
 
             Task.WaitAll(task);
         }
@@ -502,12 +503,12 @@ namespace MediaBrowser.Api.UserLibrary
             var item = string.IsNullOrEmpty(request.Id) ? user.RootFolder : DtoBuilder.GetItemByClientId(request.Id, _userManager, _libraryManager, user.Id);
 
             // Get the user data for this item
-            var data = item.GetUserData(user, true);
+            var data = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
             // Set favorite status
             data.IsFavorite = true;
 
-            var task = _userManager.SaveUserDataForItem(user, item, data);
+            var task = _userManager.SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None);
 
             Task.WaitAll(task);
         }
@@ -523,12 +524,12 @@ namespace MediaBrowser.Api.UserLibrary
             var item = string.IsNullOrEmpty(request.Id) ? user.RootFolder : DtoBuilder.GetItemByClientId(request.Id, _userManager, _libraryManager, user.Id);
 
             // Get the user data for this item
-            var data = item.GetUserData(user, true);
+            var data = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
             // Set favorite status
             data.IsFavorite = false;
 
-            var task = _userManager.SaveUserDataForItem(user, item, data);
+            var task = _userManager.SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None);
 
             Task.WaitAll(task);
         }
@@ -544,11 +545,11 @@ namespace MediaBrowser.Api.UserLibrary
             var item = string.IsNullOrEmpty(request.Id) ? user.RootFolder : DtoBuilder.GetItemByClientId(request.Id, _userManager, _libraryManager, user.Id);
 
             // Get the user data for this item
-            var data = item.GetUserData(user, true);
+            var data = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
             data.Rating = null;
 
-            var task = _userManager.SaveUserDataForItem(user, item, data);
+            var task = _userManager.SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None);
 
             Task.WaitAll(task);
         }
@@ -564,11 +565,11 @@ namespace MediaBrowser.Api.UserLibrary
             var item = string.IsNullOrEmpty(request.Id) ? user.RootFolder : DtoBuilder.GetItemByClientId(request.Id, _userManager, _libraryManager, user.Id);
 
             // Get the user data for this item
-            var data = item.GetUserData(user, true);
+            var data = _userManager.GetUserData(user.Id, item.UserDataId).Result;
 
             data.Likes = request.Likes;
 
-            var task = _userManager.SaveUserDataForItem(user, item, data);
+            var task = _userManager.SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None);
 
             Task.WaitAll(task);
         }
diff --git a/MediaBrowser.Api/UserService.cs b/MediaBrowser.Api/UserService.cs
index b495d07f9..f2a9ca24b 100644
--- a/MediaBrowser.Api/UserService.cs
+++ b/MediaBrowser.Api/UserService.cs
@@ -142,6 +142,8 @@ namespace MediaBrowser.Api
         /// Initializes a new instance of the <see cref="UserService" /> class.
         /// </summary>
         /// <param name="xmlSerializer">The XML serializer.</param>
+        /// <param name="userManager">The user manager.</param>
+        /// <param name="libraryManager">The library manager.</param>
         /// <exception cref="System.ArgumentNullException">xmlSerializer</exception>
         public UserService(IXmlSerializer xmlSerializer, IUserManager userManager, ILibraryManager libraryManager)
             : base()
@@ -163,7 +165,7 @@ namespace MediaBrowser.Api
         /// <returns>System.Object.</returns>
         public object Get(GetUsers request)
         {
-            var dtoBuilder = new DtoBuilder(Logger, _libraryManager);
+            var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userManager);
 
             var tasks = _userManager.Users.OrderBy(u => u.Name).Select(dtoBuilder.GetUserDto).ToArray();
 
@@ -186,7 +188,7 @@ namespace MediaBrowser.Api
                 throw new ResourceNotFoundException("User not found");
             }
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetUserDto(user).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetUserDto(user).Result;
 
             return ToOptimizedResult(result);
         }
@@ -300,7 +302,7 @@ namespace MediaBrowser.Api
 
             newUser.UpdateConfiguration(dtoUser.Configuration, _xmlSerializer);
 
-            var result = new DtoBuilder(Logger, _libraryManager).GetUserDto(newUser).Result;
+            var result = new DtoBuilder(Logger, _libraryManager, _userManager).GetUserDto(newUser).Result;
 
             return ToOptimizedResult(result);
         }
diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index d30f11f7d..411190d77 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -797,109 +797,6 @@ namespace MediaBrowser.Controller.Entities
         }
 
         /// <summary>
-        /// The _user data
-        /// </summary>
-        private IEnumerable<UserItemData> _userData;
-        /// <summary>
-        /// The _user data initialized
-        /// </summary>
-        private bool _userDataInitialized;
-        /// <summary>
-        /// The _user data sync lock
-        /// </summary>
-        private object _userDataSyncLock = new object();
-        /// <summary>
-        /// Gets the user data.
-        /// </summary>
-        /// <value>The user data.</value>
-        [IgnoreDataMember]
-        public IEnumerable<UserItemData> UserData
-        {
-            get
-            {
-                // Call ToList to exhaust the stream because we'll be iterating over this multiple times
-                LazyInitializer.EnsureInitialized(ref _userData, ref _userDataInitialized, ref _userDataSyncLock, () => Kernel.Instance.UserDataRepository.RetrieveUserData(this).ToList());
-                return _userData;
-            }
-            private set
-            {
-                _userData = value;
-
-                if (value == null)
-                {
-                    _userDataInitialized = false;
-                }
-            }
-        }
-
-        /// <summary>
-        /// Gets the user data.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="createIfNull">if set to <c>true</c> [create if null].</param>
-        /// <returns>UserItemData.</returns>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public UserItemData GetUserData(User user, bool createIfNull)
-        {
-            if (user == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            if (UserData == null)
-            {
-                if (!createIfNull)
-                {
-                    return null;
-                }
-
-                AddOrUpdateUserData(user, new UserItemData { UserId = user.Id });
-            }
-
-            var data = UserData.FirstOrDefault(u => u.UserId == user.Id);
-
-            if (data == null && createIfNull)
-            {
-                data = new UserItemData { UserId = user.Id };
-                AddOrUpdateUserData(user, data);
-            }
-
-            return data;
-        }
-
-        /// <summary>
-        /// Adds the or update user data.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="data">The data.</param>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public void AddOrUpdateUserData(User user, UserItemData data)
-        {
-            if (user == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            if (data == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            data.UserId = user.Id;
-
-            if (UserData == null)
-            {
-                UserData = new[] { data };
-            }
-            else
-            {
-                var list = UserData.Where(u => u.UserId != user.Id).ToList();
-                list.Add(data);
-                UserData = list;
-            }
-        }
-
-        /// <summary>
         /// The _user data id
         /// </summary>
         protected Guid _userDataId; //cache this so it doesn't have to be re-constructed on every reference
@@ -1205,16 +1102,17 @@ namespace MediaBrowser.Controller.Entities
         /// </summary>
         /// <param name="user">The user.</param>
         /// <param name="wasPlayed">if set to <c>true</c> [was played].</param>
+        /// <param name="userManager">The user manager.</param>
         /// <returns>Task.</returns>
         /// <exception cref="System.ArgumentNullException"></exception>
-        public virtual Task SetPlayedStatus(User user, bool wasPlayed, IUserManager userManager)
+        public virtual async Task SetPlayedStatus(User user, bool wasPlayed, IUserManager userManager)
         {
             if (user == null)
             {
                 throw new ArgumentNullException();
             }
 
-            var data = GetUserData(user, true);
+            var data = await userManager.GetUserData(user.Id, UserDataId).ConfigureAwait(false);
 
             if (wasPlayed)
             {
@@ -1237,7 +1135,7 @@ namespace MediaBrowser.Controller.Entities
 
             data.Played = wasPlayed;
 
-            return userManager.SaveUserDataForItem(user, this, data);
+            await userManager.SaveUserData(user.Id, UserDataId, data, CancellationToken.None).ConfigureAwait(false);
         }
 
         /// <summary>
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index 5a61844c2..05ee87def 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -74,109 +74,6 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        /// <summary>
-        /// The _display prefs
-        /// </summary>
-        private IEnumerable<DisplayPreferences> _displayPreferences;
-        /// <summary>
-        /// The _display prefs initialized
-        /// </summary>
-        private bool _displayPreferencesInitialized;
-        /// <summary>
-        /// The _display prefs sync lock
-        /// </summary>
-        private object _displayPreferencesSyncLock = new object();
-        /// <summary>
-        /// Gets the display prefs.
-        /// </summary>
-        /// <value>The display prefs.</value>
-        [IgnoreDataMember]
-        public IEnumerable<DisplayPreferences> DisplayPreferences
-        {
-            get
-            {
-                // Call ToList to exhaust the stream because we'll be iterating over this multiple times
-                LazyInitializer.EnsureInitialized(ref _displayPreferences, ref _displayPreferencesInitialized, ref _displayPreferencesSyncLock, () => Kernel.Instance.DisplayPreferencesRepository.RetrieveDisplayPreferences(this).ToList());
-                return _displayPreferences;
-            }
-            private set
-            {
-                _displayPreferences = value;
-
-                if (value == null)
-                {
-                    _displayPreferencesInitialized = false;
-                }
-            }
-        }
-
-        /// <summary>
-        /// Gets the display prefs.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="createIfNull">if set to <c>true</c> [create if null].</param>
-        /// <returns>DisplayPreferences.</returns>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public DisplayPreferences GetDisplayPreferences(User user, bool createIfNull)
-        {
-            if (user == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            if (DisplayPreferences == null)
-            {
-                if (!createIfNull)
-                {
-                    return null;
-                }
-
-                AddOrUpdateDisplayPreferences(user, new DisplayPreferences { UserId = user.Id });
-            }
-
-            var data = DisplayPreferences.FirstOrDefault(u => u.UserId == user.Id);
-
-            if (data == null && createIfNull)
-            {
-                data = new DisplayPreferences { UserId = user.Id };
-                AddOrUpdateDisplayPreferences(user, data);
-            }
-
-            return data;
-        }
-
-        /// <summary>
-        /// Adds the or update display prefs.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="data">The data.</param>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public void AddOrUpdateDisplayPreferences(User user, DisplayPreferences data)
-        {
-            if (user == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            if (data == null)
-            {
-                throw new ArgumentNullException();
-            }
-
-            data.UserId = user.Id;
-
-            if (DisplayPreferences == null)
-            {
-                DisplayPreferences = new[] { data };
-            }
-            else
-            {
-                var list = DisplayPreferences.Where(u => u.UserId != user.Id).ToList();
-                list.Add(data);
-                DisplayPreferences = list;
-            }
-        }
-
         #region Indexing
 
         /// <summary>
@@ -902,6 +799,7 @@ namespace MediaBrowser.Controller.Entities
         /// </summary>
         /// <param name="user">The user.</param>
         /// <param name="wasPlayed">if set to <c>true</c> [was played].</param>
+        /// <param name="userManager">The user manager.</param>
         /// <returns>Task.</returns>
         public override async Task SetPlayedStatus(User user, bool wasPlayed, IUserManager userManager)
         {
diff --git a/MediaBrowser.Controller/Library/DtoBuilder.cs b/MediaBrowser.Controller/Library/DtoBuilder.cs
index 36c7eba1f..d9244c64c 100644
--- a/MediaBrowser.Controller/Library/DtoBuilder.cs
+++ b/MediaBrowser.Controller/Library/DtoBuilder.cs
@@ -28,11 +28,13 @@ namespace MediaBrowser.Controller.Library
 
         private readonly ILogger _logger;
         private readonly ILibraryManager _libraryManager;
+        private readonly IUserManager _userManager;
 
-        public DtoBuilder(ILogger logger, ILibraryManager libraryManager)
+        public DtoBuilder(ILogger logger, ILibraryManager libraryManager, IUserManager userManager)
         {
             _logger = logger;
             _libraryManager = libraryManager;
+            _userManager = userManager;
         }
 
         /// <summary>
@@ -141,9 +143,9 @@ namespace MediaBrowser.Controller.Library
                 tasks.Add(AttachPeople(dto, item));
             }
 
-            AttachBasicFields(dto, item, fields);
+            tasks.Add(AttachUserSpecificInfo(dto, item, user, fields));
 
-            AttachUserSpecificInfo(dto, item, user, fields);
+            AttachBasicFields(dto, item, fields);
 
             // Make sure all the tasks we kicked off have completed.
             if (tasks.Count > 0)
@@ -161,21 +163,20 @@ namespace MediaBrowser.Controller.Library
         /// <param name="item">The item.</param>
         /// <param name="user">The user.</param>
         /// <param name="fields">The fields.</param>
-        private void AttachUserSpecificInfo(BaseItemDto dto, BaseItem item, User user, List<ItemFields> fields)
+        private async Task AttachUserSpecificInfo(BaseItemDto dto, BaseItem item, User user, List<ItemFields> fields)
         {
             if (fields.Contains(ItemFields.UserData))
             {
-                var userData = item.GetUserData(user, false);
+                var userData = await _userManager.GetUserData(user.Id, item.UserDataId).ConfigureAwait(false);
 
-                if (userData != null)
-                {
-                    dto.UserData = GetUserItemDataDto(userData);
-                }
+                dto.UserData = GetUserItemDataDto(userData);
             }
 
             if (item.IsFolder && fields.Contains(ItemFields.DisplayPreferences))
             {
-                dto.DisplayPreferences = ((Folder)item).GetDisplayPreferences(user, false) ?? new DisplayPreferences { UserId = user.Id };
+                var displayPreferencesId = ((Folder) item).DisplayPreferencesId;
+
+                dto.DisplayPreferences = await _userManager.GetDisplayPreferences(user.Id, displayPreferencesId).ConfigureAwait(false);
             }
 
             if (item.IsFolder)
@@ -187,11 +188,11 @@ namespace MediaBrowser.Controller.Library
                     // Skip sorting since all we want is a count
                     dto.ChildCount = folder.GetChildren(user).Count();
 
-                    SetSpecialCounts(folder, user, dto);
+                    await SetSpecialCounts(folder, user, dto, _userManager).ConfigureAwait(false);
                 }
             }
         }
-
+        
         /// <summary>
         /// Attaches the primary image aspect ratio.
         /// </summary>
@@ -484,7 +485,9 @@ namespace MediaBrowser.Controller.Library
         /// <param name="folder">The folder.</param>
         /// <param name="user">The user.</param>
         /// <param name="dto">The dto.</param>
-        private static void SetSpecialCounts(Folder folder, User user, BaseItemDto dto)
+        /// <param name="userManager">The user manager.</param>
+        /// <returns>Task.</returns>
+        private static async Task SetSpecialCounts(Folder folder, User user, BaseItemDto dto, IUserManager userManager)
         {
             var rcentlyAddedItemCount = 0;
             var recursiveItemCount = 0;
@@ -494,7 +497,7 @@ namespace MediaBrowser.Controller.Library
             // Loop through each recursive child
             foreach (var child in folder.GetRecursiveChildren(user).Where(i => !i.IsFolder))
             {
-                var userdata = child.GetUserData(user, false);
+                var userdata = await userManager.GetUserData(user.Id, child.UserDataId).ConfigureAwait(false);
 
                 recursiveItemCount++;
 
diff --git a/MediaBrowser.Controller/Library/ILibraryManager.cs b/MediaBrowser.Controller/Library/ILibraryManager.cs
index 1b9d2f4b2..da2f46abb 100644
--- a/MediaBrowser.Controller/Library/ILibraryManager.cs
+++ b/MediaBrowser.Controller/Library/ILibraryManager.cs
@@ -108,15 +108,6 @@ namespace MediaBrowser.Controller.Library
         Task ValidateMediaLibrary(IProgress<double> progress, CancellationToken cancellationToken);
 
         /// <summary>
-        /// Saves display preferences for a Folder
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="folder">The folder.</param>
-        /// <param name="data">The data.</param>
-        /// <returns>Task.</returns>
-        Task SaveDisplayPreferencesForFolder(User user, Folder folder, DisplayPreferences data);
-
-        /// <summary>
         /// Gets the default view.
         /// </summary>
         /// <returns>IEnumerable{VirtualFolderInfo}.</returns>
diff --git a/MediaBrowser.Controller/Library/IUserManager.cs b/MediaBrowser.Controller/Library/IUserManager.cs
index 229e4cb76..8374c6880 100644
--- a/MediaBrowser.Controller/Library/IUserManager.cs
+++ b/MediaBrowser.Controller/Library/IUserManager.cs
@@ -1,6 +1,7 @@
 using MediaBrowser.Common.Events;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Model.Connectivity;
+using MediaBrowser.Model.Entities;
 using System;
 using System.Collections.Generic;
 using System.Threading;
@@ -157,14 +158,6 @@ namespace MediaBrowser.Controller.Library
         Task OnPlaybackStopped(User user, BaseItem item, long? positionTicks, string clientType, string deviceId, string deviceName);
 
         /// <summary>
-        /// Saves user data for an item
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="item">The item.</param>
-        /// <param name="data">The data.</param>
-        Task SaveUserDataForItem(User user, BaseItem item, UserItemData data);
-
-        /// <summary>
         /// Resets the password.
         /// </summary>
         /// <param name="user">The user.</param>
@@ -178,5 +171,43 @@ namespace MediaBrowser.Controller.Library
         /// <param name="newPassword">The new password.</param>
         /// <returns>Task.</returns>
         Task ChangePassword(User user, string newPassword);
+
+        /// <summary>
+        /// Saves display preferences for an item
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <param name="userData">The user data.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        Task SaveUserData(Guid userId, Guid userDataId, UserItemData userData,
+                                    CancellationToken cancellationToken);
+
+        /// <summary>
+        /// Gets the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <returns>Task{DisplayPreferences}.</returns>
+        Task<UserItemData> GetUserData(Guid userId, Guid userDataId);
+        
+        /// <summary>
+        /// Gets the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <returns>DisplayPreferences.</returns>
+        Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId);
+
+        /// <summary>
+        /// Saves display preferences for an item
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <param name="displayPreferences">The display preferences.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences,
+                                    CancellationToken cancellationToken);
     }
 }
diff --git a/MediaBrowser.Controller/Persistence/IDisplayPreferencesRepository.cs b/MediaBrowser.Controller/Persistence/IDisplayPreferencesRepository.cs
index 6f03810c2..eb43c8ca5 100644
--- a/MediaBrowser.Controller/Persistence/IDisplayPreferencesRepository.cs
+++ b/MediaBrowser.Controller/Persistence/IDisplayPreferencesRepository.cs
@@ -1,6 +1,5 @@
-using MediaBrowser.Controller.Entities;
-using MediaBrowser.Model.Entities;
-using System.Collections.Generic;
+using MediaBrowser.Model.Entities;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -14,16 +13,20 @@ namespace MediaBrowser.Controller.Persistence
         /// <summary>
         /// Saves display preferences for an item
         /// </summary>
-        /// <param name="item">The item.</param>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <param name="displayPreferences">The display preferences.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        Task SaveDisplayPreferences(Folder item, CancellationToken cancellationToken);
+        Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences,
+                                    CancellationToken cancellationToken);
 
         /// <summary>
-        /// Gets display preferences for an item
+        /// Gets the display preferences.
         /// </summary>
-        /// <param name="item">The item.</param>
-        /// <returns>IEnumerable{DisplayPreferences}.</returns>
-        IEnumerable<DisplayPreferences> RetrieveDisplayPreferences(Folder item);
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <returns>Task{DisplayPreferences}.</returns>
+        Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId);
     }
 }
diff --git a/MediaBrowser.Controller/Persistence/IUserDataRepository.cs b/MediaBrowser.Controller/Persistence/IUserDataRepository.cs
index 115bd411a..592206faf 100644
--- a/MediaBrowser.Controller/Persistence/IUserDataRepository.cs
+++ b/MediaBrowser.Controller/Persistence/IUserDataRepository.cs
@@ -1,5 +1,5 @@
 using MediaBrowser.Controller.Entities;
-using System.Collections.Generic;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -11,18 +11,22 @@ namespace MediaBrowser.Controller.Persistence
     public interface IUserDataRepository : IRepository
     {
         /// <summary>
-        /// Saves user data for an item
+        /// Saves the user data.
         /// </summary>
-        /// <param name="item">The item.</param>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <param name="userData">The user data.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        Task SaveUserData(BaseItem item, CancellationToken cancellationToken);
+        Task SaveUserData(Guid userId, Guid userDataId, UserItemData userData,
+                                    CancellationToken cancellationToken);
 
         /// <summary>
-        /// Gets user data for an item
+        /// Gets the user data.
         /// </summary>
-        /// <param name="item">The item.</param>
-        /// <returns>IEnumerable{UserItemData}.</returns>
-        IEnumerable<UserItemData> RetrieveUserData(BaseItem item);
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <returns>Task{UserItemData}.</returns>
+        Task<UserItemData> GetUserData(Guid userId, Guid userDataId);
     }
 }
diff --git a/MediaBrowser.Controller/Sorting/IUserBaseItemComparer.cs b/MediaBrowser.Controller/Sorting/IUserBaseItemComparer.cs
index b9da1f6a6..76d84a653 100644
--- a/MediaBrowser.Controller/Sorting/IUserBaseItemComparer.cs
+++ b/MediaBrowser.Controller/Sorting/IUserBaseItemComparer.cs
@@ -1,4 +1,5 @@
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
 
 namespace MediaBrowser.Controller.Sorting
 {
@@ -12,5 +13,11 @@ namespace MediaBrowser.Controller.Sorting
         /// </summary>
         /// <value>The user.</value>
         User User { get; set; }
+
+        /// <summary>
+        /// Gets or sets the user manager.
+        /// </summary>
+        /// <value>The user manager.</value>
+        IUserManager UserManager { get; set; }
     }
 }
diff --git a/MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs b/MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs
index edb227c79..669603958 100644
--- a/MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs
+++ b/MediaBrowser.Server.Implementations/HttpServer/HttpServer.cs
@@ -160,7 +160,7 @@ namespace MediaBrowser.Server.Implementations.HttpServer
 
                     if (exception != null)
                     {
-                        _logger.ErrorException("Error processing request", exception);
+                        _logger.ErrorException("Error processing request for {0}", exception, req.RawUrl);
 
                         if (!string.IsNullOrEmpty(exception.Message))
                         {
diff --git a/MediaBrowser.Server.Implementations/Library/LibraryManager.cs b/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
index 84055cea7..a57eb8eaa 100644
--- a/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
+++ b/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
@@ -124,15 +124,6 @@ namespace MediaBrowser.Server.Implementations.Library
                 LazyInitializer.EnsureInitialized(ref _libraryItemsCache, ref _libraryItemsCacheInitialized, ref _libraryItemsCacheSyncLock, CreateLibraryItemsCache);
                 return _libraryItemsCache;
             }
-            set
-            {
-                _libraryItemsCache = value;
-
-                if (value == null)
-                {
-                    _libraryItemsCacheInitialized = false;
-                }
-            }
         }
 
         /// <summary>
@@ -267,10 +258,22 @@ namespace MediaBrowser.Server.Implementations.Library
             items.AddRange(specialFeatures);
             items.AddRange(localTrailers);
 
-            // Can't add these right now because there could be separate instances with the same id.
-            //items.AddRange(_userManager.Users.Select(i => i.RootFolder).Distinct().ToList());
+            // Need to use DistinctBy Id because there could be multiple instances with the same id
+            // due to sharing the default library
+            var userRootFolders = _userManager.Users.Select(i => i.RootFolder)
+                .DistinctBy(i => i.Id)
+                .ToList();
+
+            items.AddRange(userRootFolders);
 
-            items.AddRange(_userManager.Users.SelectMany(i => i.RootFolder.Children).Where(i => !(i is BasePluginFolder)).Distinct().ToList());
+            // Get all user collection folders
+            var userFolders =
+                _userManager.Users.SelectMany(i => i.RootFolder.Children)
+                            .Where(i => !(i is BasePluginFolder))
+                            .DistinctBy(i => i.Id)
+                            .ToList();
+
+            items.AddRange(userFolders);
 
             return new ConcurrentDictionary<Guid,BaseItem>(items.ToDictionary(i => i.Id));
         }
@@ -745,26 +748,6 @@ namespace MediaBrowser.Server.Implementations.Library
         }
 
         /// <summary>
-        /// Saves display preferences for a Folder
-        /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="folder">The folder.</param>
-        /// <param name="data">The data.</param>
-        /// <returns>Task.</returns>
-        public Task SaveDisplayPreferencesForFolder(User user, Folder folder, DisplayPreferences data)
-        {
-            // Need to update all items with the same DisplayPreferencesId
-            foreach (var child in RootFolder.GetRecursiveChildren(user)
-                .OfType<Folder>()
-                .Where(i => i.DisplayPreferencesId == folder.DisplayPreferencesId))
-            {
-                child.AddOrUpdateDisplayPreferences(user, data);
-            }
-
-            return Kernel.DisplayPreferencesRepository.SaveDisplayPreferences(folder, CancellationToken.None);
-        }
-
-        /// <summary>
         /// Gets the default view.
         /// </summary>
         /// <returns>IEnumerable{VirtualFolderInfo}.</returns>
@@ -878,6 +861,7 @@ namespace MediaBrowser.Server.Implementations.Library
                     var userComparer = (IUserBaseItemComparer)Activator.CreateInstance(comparer.GetType());
 
                     userComparer.User = user;
+                    userComparer.UserManager = _userManager;
 
                     return userComparer;
                 }
diff --git a/MediaBrowser.Server.Implementations/Library/UserManager.cs b/MediaBrowser.Server.Implementations/Library/UserManager.cs
index 49b2a3f18..ca3c1fe7c 100644
--- a/MediaBrowser.Server.Implementations/Library/UserManager.cs
+++ b/MediaBrowser.Server.Implementations/Library/UserManager.cs
@@ -5,8 +5,10 @@ using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Connectivity;
+using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
 using System.Security.Cryptography;
@@ -98,6 +100,13 @@ namespace MediaBrowser.Server.Implementations.Library
         private IServerConfigurationManager ConfigurationManager { get; set; }
 
         /// <summary>
+        /// The _user data
+        /// </summary>
+        private readonly ConcurrentDictionary<string, Task<DisplayPreferences>> _displayPreferences = new ConcurrentDictionary<string, Task<DisplayPreferences>>();
+
+        private readonly ConcurrentDictionary<string, Task<UserItemData>> _userData = new ConcurrentDictionary<string, Task<UserItemData>>();
+        
+        /// <summary>
         /// Initializes a new instance of the <see cref="UserManager" /> class.
         /// </summary>
         /// <param name="kernel">The kernel.</param>
@@ -157,6 +166,63 @@ namespace MediaBrowser.Server.Implementations.Library
         #endregion
 
         /// <summary>
+        /// Gets the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <returns>DisplayPreferences.</returns>
+        public Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId)
+        {
+            var key = userId + displayPreferencesId.ToString();
+
+            return _displayPreferences.GetOrAdd(key, keyName => RetrieveDisplayPreferences(userId, displayPreferencesId));
+        }
+
+        /// <summary>
+        /// Retrieves the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <returns>DisplayPreferences.</returns>
+        private async Task<DisplayPreferences> RetrieveDisplayPreferences(Guid userId, Guid displayPreferencesId)
+        {
+            var displayPreferences = await Kernel.Instance.DisplayPreferencesRepository.GetDisplayPreferences(userId, displayPreferencesId).ConfigureAwait(false);
+
+            return displayPreferences ?? new DisplayPreferences();
+        }
+
+        /// <summary>
+        /// Saves display preferences for an item
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <param name="displayPreferences">The display preferences.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public async Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences, CancellationToken cancellationToken)
+        {
+            var key = userId + displayPreferencesId.ToString();
+           
+            try
+            {
+                await Kernel.Instance.DisplayPreferencesRepository.SaveDisplayPreferences(userId, displayPreferencesId,
+                                                                                        displayPreferences,
+                                                                                        cancellationToken).ConfigureAwait(false);
+
+                var newValue = Task.FromResult(displayPreferences);
+
+                // Once it succeeds, put it into the dictionary to make it available to everyone else
+                _displayPreferences.AddOrUpdate(key, newValue, delegate { return newValue; });
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error saving display preferences", ex);
+
+                throw;
+            }
+        }
+
+        /// <summary>
         /// Gets a User by Id
         /// </summary>
         /// <param name="id">The id.</param>
@@ -588,10 +654,10 @@ namespace MediaBrowser.Server.Implementations.Library
 
             if (positionTicks.HasValue)
             {
-                var data = item.GetUserData(user, true);
+                var data = await GetUserData(user.Id, item.UserDataId).ConfigureAwait(false);
 
                 UpdatePlayState(item, data, positionTicks.Value, false);
-                await SaveUserDataForItem(user, item, data).ConfigureAwait(false);
+                await SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None).ConfigureAwait(false);
             }
 
             EventHelper.QueueEventIfNotNull(PlaybackProgress, this, new PlaybackProgressEventArgs
@@ -626,7 +692,7 @@ namespace MediaBrowser.Server.Implementations.Library
 
             RemoveNowPlayingItemId(user, clientType, deviceId, deviceName, item);
 
-            var data = item.GetUserData(user, true);
+            var data = await GetUserData(user.Id, item.UserDataId).ConfigureAwait(false);
 
             if (positionTicks.HasValue)
             {
@@ -639,7 +705,7 @@ namespace MediaBrowser.Server.Implementations.Library
                 data.Played = true;
             }
 
-            await SaveUserDataForItem(user, item, data).ConfigureAwait(false);
+            await SaveUserData(user.Id, item.UserDataId, data, CancellationToken.None).ConfigureAwait(false);
 
             EventHelper.QueueEventIfNotNull(PlaybackStopped, this, new PlaybackProgressEventArgs
             {
@@ -700,17 +766,57 @@ namespace MediaBrowser.Server.Implementations.Library
         }
 
         /// <summary>
-        /// Saves user data for an item
+        /// Saves display preferences for an item
         /// </summary>
-        /// <param name="user">The user.</param>
-        /// <param name="item">The item.</param>
-        /// <param name="data">The data.</param>
-        public Task SaveUserDataForItem(User user, BaseItem item, UserItemData data)
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <param name="userData">The user data.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public async Task SaveUserData(Guid userId, Guid userDataId, UserItemData userData, CancellationToken cancellationToken)
+        {
+            var key = userId + userDataId.ToString();
+            try
+            {
+                await Kernel.Instance.UserDataRepository.SaveUserData(userId, userDataId, userData, cancellationToken).ConfigureAwait(false);
+
+                var newValue = Task.FromResult(userData);
+
+                // Once it succeeds, put it into the dictionary to make it available to everyone else
+                _userData.AddOrUpdate(key, newValue, delegate { return newValue; });
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Error saving user data", ex);
+
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Gets the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <returns>Task{DisplayPreferences}.</returns>
+        public Task<UserItemData> GetUserData(Guid userId, Guid userDataId)
         {
-            item.AddOrUpdateUserData(user, data);
+            var key = userId + userDataId.ToString();
 
-            return Kernel.UserDataRepository.SaveUserData(item, CancellationToken.None);
+            return _userData.GetOrAdd(key, keyName => RetrieveUserData(userId, userDataId));
         }
 
+        /// <summary>
+        /// Retrieves the display preferences.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <returns>DisplayPreferences.</returns>
+        private async Task<UserItemData> RetrieveUserData(Guid userId, Guid userDataId)
+        {
+            var userdata = await Kernel.Instance.UserDataRepository.GetUserData(userId, userDataId).ConfigureAwait(false);
+
+            return userdata ?? new UserItemData();
+        }
     }
 }
diff --git a/MediaBrowser.Server.Implementations/Sorting/DatePlayedComparer.cs b/MediaBrowser.Server.Implementations/Sorting/DatePlayedComparer.cs
index c37b6b4a4..905d5413a 100644
--- a/MediaBrowser.Server.Implementations/Sorting/DatePlayedComparer.cs
+++ b/MediaBrowser.Server.Implementations/Sorting/DatePlayedComparer.cs
@@ -1,4 +1,5 @@
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Sorting;
 using MediaBrowser.Model.Querying;
 using System;
@@ -17,6 +18,12 @@ namespace MediaBrowser.Server.Implementations.Sorting
         public User User { get; set; }
 
         /// <summary>
+        /// Gets or sets the user manager.
+        /// </summary>
+        /// <value>The user manager.</value>
+        public IUserManager UserManager { get; set; }
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -34,7 +41,7 @@ namespace MediaBrowser.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private DateTime GetDate(BaseItem x)
         {
-            var userdata = x.GetUserData(User, false);
+            var userdata = UserManager.GetUserData(User.Id, x.UserDataId).Result;
 
             if (userdata != null && userdata.LastPlayedDate.HasValue)
             {
diff --git a/MediaBrowser.Server.Implementations/Sorting/PlayCountComparer.cs b/MediaBrowser.Server.Implementations/Sorting/PlayCountComparer.cs
index 9cd5281c3..82e76e78d 100644
--- a/MediaBrowser.Server.Implementations/Sorting/PlayCountComparer.cs
+++ b/MediaBrowser.Server.Implementations/Sorting/PlayCountComparer.cs
@@ -1,4 +1,5 @@
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Sorting;
 using MediaBrowser.Model.Querying;
 
@@ -33,7 +34,7 @@ namespace MediaBrowser.Server.Implementations.Sorting
         /// <returns>DateTime.</returns>
         private int GetValue(BaseItem x)
         {
-            var userdata = x.GetUserData(User, false);
+            var userdata = UserManager.GetUserData(User.Id, x.UserDataId).Result;
 
             return userdata == null ? 0 : userdata.PlayCount;
         }
@@ -46,5 +47,11 @@ namespace MediaBrowser.Server.Implementations.Sorting
         {
             get { return ItemSortBy.PlayCount; }
         }
+
+        /// <summary>
+        /// Gets or sets the user manager.
+        /// </summary>
+        /// <value>The user manager.</value>
+        public IUserManager UserManager { get; set; }
     }
 }
diff --git a/MediaBrowser.Server.Implementations/Sqlite/SQLiteDisplayPreferencesRepository.cs b/MediaBrowser.Server.Implementations/Sqlite/SQLiteDisplayPreferencesRepository.cs
index baa38cde0..44674e125 100644
--- a/MediaBrowser.Server.Implementations/Sqlite/SQLiteDisplayPreferencesRepository.cs
+++ b/MediaBrowser.Server.Implementations/Sqlite/SQLiteDisplayPreferencesRepository.cs
@@ -1,11 +1,9 @@
 using MediaBrowser.Common.Configuration;
-using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Persistence;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;
 using MediaBrowser.Model.Serialization;
 using System;
-using System.Collections.Generic;
 using System.Data;
 using System.IO;
 using System.Threading;
@@ -80,8 +78,8 @@ namespace MediaBrowser.Server.Implementations.Sqlite
 
             string[] queries = {
 
-                                "create table if not exists display_prefs (item_id GUID, user_id GUID, data BLOB)",
-                                "create unique index if not exists idx_display_prefs on display_prefs (item_id, user_id)",
+                                "create table if not exists displaypreferences (id GUID, userId GUID, data BLOB)",
+                                "create unique index if not exists displaypreferencesindex on displaypreferences (id, userId)",
                                 "create table if not exists schema_version (table_name primary key, version)",
                                 //pragmas
                                 "pragma temp_store = memory"
@@ -93,82 +91,87 @@ namespace MediaBrowser.Server.Implementations.Sqlite
         /// <summary>
         /// Save the display preferences associated with an item in the repo
         /// </summary>
-        /// <param name="item">The item.</param>
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <param name="displayPreferences">The display preferences.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
         /// <exception cref="System.ArgumentNullException">item</exception>
-        public Task SaveDisplayPreferences(Folder item, CancellationToken cancellationToken)
+        public Task SaveDisplayPreferences(Guid userId, Guid displayPreferencesId, DisplayPreferences displayPreferences, CancellationToken cancellationToken)
         {
-            if (item == null)
+            if (displayPreferences == null)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException("displayPreferences");
             }
-
             if (cancellationToken == null)
             {
                 throw new ArgumentNullException("cancellationToken");
             }
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (displayPreferencesId == Guid.Empty)
+            {
+                throw new ArgumentNullException("displayPreferencesId");
+            }
 
             cancellationToken.ThrowIfCancellationRequested();
-
+            
             return Task.Run(() =>
             {
-                var cmd = connection.CreateCommand();
+                var serialized = _protobufSerializer.SerializeToBytes(displayPreferences);
 
-                cmd.CommandText = "delete from display_prefs where item_id = @guid";
-                cmd.AddParam("@guid", item.DisplayPreferencesId);
+                cancellationToken.ThrowIfCancellationRequested();
 
+                var cmd = connection.CreateCommand();
+                cmd.CommandText = "replace into displaypreferences (id, userId, data) values (@1, @2, @3)";
+                cmd.AddParam("@1", displayPreferencesId);
+                cmd.AddParam("@2", userId);
+                cmd.AddParam("@3", serialized);
                 QueueCommand(cmd);
-
-                if (item.DisplayPreferences != null)
-                {
-                    foreach (var data in item.DisplayPreferences)
-                    {
-                        cmd = connection.CreateCommand();
-                        cmd.CommandText = "insert into display_prefs (item_id, user_id, data) values (@1, @2, @3)";
-                        cmd.AddParam("@1", item.DisplayPreferencesId);
-                        cmd.AddParam("@2", data.UserId);
-
-                        cmd.AddParam("@3", _protobufSerializer.SerializeToBytes(data));
-
-                        QueueCommand(cmd);
-                    }
-                }
             });
         }
 
         /// <summary>
-        /// Gets display preferences for an item
+        /// Gets the display preferences.
         /// </summary>
-        /// <param name="item">The item.</param>
-        /// <returns>IEnumerable{DisplayPreferences}.</returns>
-        /// <exception cref="System.ArgumentNullException"></exception>
-        public IEnumerable<DisplayPreferences> RetrieveDisplayPreferences(Folder item)
+        /// <param name="userId">The user id.</param>
+        /// <param name="displayPreferencesId">The display preferences id.</param>
+        /// <returns>Task{DisplayPreferences}.</returns>
+        /// <exception cref="System.ArgumentNullException">item</exception>
+        public async Task<DisplayPreferences> GetDisplayPreferences(Guid userId, Guid displayPreferencesId)
         {
-            if (item == null)
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (displayPreferencesId == Guid.Empty)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException("displayPreferencesId");
             }
 
             var cmd = connection.CreateCommand();
-            cmd.CommandText = "select data from display_prefs where item_id = @guid";
-            var guidParam = cmd.Parameters.Add("@guid", DbType.Guid);
-            guidParam.Value = item.DisplayPreferencesId;
+            cmd.CommandText = "select data from displaypreferences where id = @id and userId=@userId";
+            
+            var idParam = cmd.Parameters.Add("@id", DbType.Guid);
+            idParam.Value = displayPreferencesId;
 
-            using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
+            var userIdParam = cmd.Parameters.Add("@userId", DbType.Guid);
+            userIdParam.Value = userId;
+
+            using (var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow).ConfigureAwait(false))
             {
-                while (reader.Read())
+                if (reader.Read())
                 {
                     using (var stream = GetStream(reader, 0))
                     {
-                        var data = _protobufSerializer.DeserializeFromStream<DisplayPreferences>(stream);
-                        if (data != null)
-                        {
-                            yield return data;
-                        }
+                        return _protobufSerializer.DeserializeFromStream<DisplayPreferences>(stream);
                     }
                 }
             }
+
+            return null;
         }
     }
 }
diff --git a/MediaBrowser.Server.Implementations/Sqlite/SQLiteUserDataRepository.cs b/MediaBrowser.Server.Implementations/Sqlite/SQLiteUserDataRepository.cs
index dafdce798..f3dede889 100644
--- a/MediaBrowser.Server.Implementations/Sqlite/SQLiteUserDataRepository.cs
+++ b/MediaBrowser.Server.Implementations/Sqlite/SQLiteUserDataRepository.cs
@@ -79,8 +79,8 @@ namespace MediaBrowser.Server.Implementations.Sqlite
 
             string[] queries = {
 
-                                "create table if not exists user_data (item_id GUID, user_id GUID, data BLOB)",
-                                "create unique index if not exists idx_user_data on user_data (item_id, user_id)",
+                                "create table if not exists userdata (id GUID, userId GUID, data BLOB)",
+                                "create unique index if not exists userdataindex on userdata (id, userId)",
                                 "create table if not exists schema_version (table_name primary key, version)",
                                 //pragmas
                                 "pragma temp_store = memory"
@@ -90,84 +90,101 @@ namespace MediaBrowser.Server.Implementations.Sqlite
         }
 
         /// <summary>
-        /// Save the user specific data associated with an item in the repo
+        /// Saves the user data.
         /// </summary>
-        /// <param name="item">The item.</param>
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <param name="userData">The user data.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        /// <exception cref="System.ArgumentNullException">item</exception>
-        public Task SaveUserData(BaseItem item, CancellationToken cancellationToken)
+        /// <exception cref="System.ArgumentNullException">
+        /// userData
+        /// or
+        /// cancellationToken
+        /// or
+        /// userId
+        /// or
+        /// userDataId
+        /// </exception>
+        public Task SaveUserData(Guid userId, Guid userDataId, UserItemData userData, CancellationToken cancellationToken)
         {
-            if (item == null)
+            if (userData == null)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException("userData");
             }
-
             if (cancellationToken == null)
             {
                 throw new ArgumentNullException("cancellationToken");
             }
-            
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (userDataId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userDataId");
+            }
+
+            cancellationToken.ThrowIfCancellationRequested();
+
             return Task.Run(() =>
             {
+                var serialized = _protobufSerializer.SerializeToBytes(userData);
+
                 cancellationToken.ThrowIfCancellationRequested();
 
                 var cmd = connection.CreateCommand();
-
-                cmd.CommandText = "delete from user_data where item_id = @guid";
-                cmd.AddParam("@guid", item.UserDataId);
-
+                cmd.CommandText = "replace into userdata (id, userId, data) values (@1, @2, @3)";
+                cmd.AddParam("@1", userDataId);
+                cmd.AddParam("@2", userId);
+                cmd.AddParam("@3", serialized);
                 QueueCommand(cmd);
-
-                if (item.UserData != null)
-                {
-                    foreach (var data in item.UserData)
-                    {
-                        cmd = connection.CreateCommand();
-                        cmd.CommandText = "insert into user_data (item_id, user_id, data) values (@1, @2, @3)";
-                        cmd.AddParam("@1", item.UserDataId);
-                        cmd.AddParam("@2", data.UserId);
-
-                        cmd.AddParam("@3", _protobufSerializer.SerializeToBytes(data));
-
-                        QueueCommand(cmd);
-                    }
-                }
             });
         }
 
         /// <summary>
-        /// Gets user data for an item
+        /// Gets the user data.
         /// </summary>
-        /// <param name="item">The item.</param>
-        /// <returns>IEnumerable{UserItemData}.</returns>
-        /// <exception cref="System.ArgumentNullException">item</exception>
-        public IEnumerable<UserItemData> RetrieveUserData(BaseItem item)
+        /// <param name="userId">The user id.</param>
+        /// <param name="userDataId">The user data id.</param>
+        /// <returns>Task{UserItemData}.</returns>
+        /// <exception cref="System.ArgumentNullException">
+        /// userId
+        /// or
+        /// userDataId
+        /// </exception>
+        public async Task<UserItemData> GetUserData(Guid userId, Guid userDataId)
         {
-            if (item == null)
+            if (userId == Guid.Empty)
             {
-                throw new ArgumentNullException("item");
+                throw new ArgumentNullException("userId");
+            }
+            if (userDataId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userDataId");
             }
 
             var cmd = connection.CreateCommand();
-            cmd.CommandText = "select data from user_data where item_id = @guid";
-            var guidParam = cmd.Parameters.Add("@guid", DbType.Guid);
-            guidParam.Value = item.UserDataId;
+            cmd.CommandText = "select data from userdata where id = @id and userId=@userId";
+
+            var idParam = cmd.Parameters.Add("@id", DbType.Guid);
+            idParam.Value = userDataId;
 
-            using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
+            var userIdParam = cmd.Parameters.Add("@userId", DbType.Guid);
+            userIdParam.Value = userId;
+
+            using (var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow).ConfigureAwait(false))
             {
-                while (reader.Read())
+                if (reader.Read())
                 {
                     using (var stream = GetStream(reader, 0))
                     {
-                        var data = _protobufSerializer.DeserializeFromStream<UserItemData>(stream);
-                        if (data != null)
-                        {
-                            yield return data;
-                        }
+                        return _protobufSerializer.DeserializeFromStream<UserItemData>(stream);
                     }
                 }
             }
+
+            return null;
         }
     }
 }
diff --git a/MediaBrowser.ServerApplication/EntryPoints/WebSocketEvents.cs b/MediaBrowser.ServerApplication/EntryPoints/WebSocketEvents.cs
index 50d625739..9ddd14491 100644
--- a/MediaBrowser.ServerApplication/EntryPoints/WebSocketEvents.cs
+++ b/MediaBrowser.ServerApplication/EntryPoints/WebSocketEvents.cs
@@ -174,7 +174,7 @@ namespace MediaBrowser.ServerApplication.EntryPoints
         /// <param name="e">The e.</param>
         async void userManager_UserUpdated(object sender, GenericEventArgs<User> e)
         {
-            var dto = await new DtoBuilder(_logger, _libraryManager).GetUserDto(e.Argument).ConfigureAwait(false);
+            var dto = await new DtoBuilder(_logger, _libraryManager, _userManager).GetUserDto(e.Argument).ConfigureAwait(false);
 
             _serverManager.SendWebSocketMessage("UserUpdated", dto);
         }
diff --git a/MediaBrowser.ServerApplication/LibraryExplorer.xaml.cs b/MediaBrowser.ServerApplication/LibraryExplorer.xaml.cs
index ca69459be..8811de9db 100644
--- a/MediaBrowser.ServerApplication/LibraryExplorer.xaml.cs
+++ b/MediaBrowser.ServerApplication/LibraryExplorer.xaml.cs
@@ -33,7 +33,8 @@ namespace MediaBrowser.ServerApplication
 
         private readonly IJsonSerializer _jsonSerializer;
         private readonly ILibraryManager _libraryManager;
-  
+        private readonly IUserManager _userManager;
+
         /// <summary>
         /// The current user
         /// </summary>
@@ -46,6 +47,7 @@ namespace MediaBrowser.ServerApplication
             _logger = logger;
             _jsonSerializer = jsonSerializer;
             _libraryManager = libraryManager;
+            _userManager = userManager;
 
             InitializeComponent();
             lblVersion.Content = "Version: " + appHost.ApplicationVersion;
@@ -89,7 +91,7 @@ namespace MediaBrowser.ServerApplication
                                         var currentFolder = folder;
                                        Task.Factory.StartNew(() =>
                                         {
-                                            var prefs = ddlProfile.SelectedItem != null ? currentFolder.GetDisplayPreferences(ddlProfile.SelectedItem as User, false) ?? new DisplayPreferences {SortBy = ItemSortBy.SortName} : new DisplayPreferences {SortBy = ItemSortBy.SortName};
+                                            var prefs = ddlProfile.SelectedItem != null ? _userManager.GetDisplayPreferences((ddlProfile.SelectedItem as User).Id, currentFolder.DisplayPreferencesId).Result ?? new DisplayPreferences { SortBy = ItemSortBy.SortName } : new DisplayPreferences { SortBy = ItemSortBy.SortName };
                                             var node = new TreeViewItem { Tag = currentFolder };
 
                                             var subChildren = currentFolder.GetChildren(CurrentUser, prefs.IndexBy);
@@ -142,7 +144,8 @@ namespace MediaBrowser.ServerApplication
                 var subFolder = item as Folder;
                 if (subFolder != null)
                 {
-                    var prefs = subFolder.GetDisplayPreferences(user, false) ?? new DisplayPreferences {SortBy = LocalizedStrings.Instance.GetString("NameDispPref")};
+                    var prefs = _userManager.GetDisplayPreferences(user.Id, subFolder.DisplayPreferencesId).Result;
+                    
                     AddChildren(node, OrderBy(subFolder.GetChildren(user), user, prefs.SortBy), user);
                     node.Header = item.Name + " (" + node.Items.Count + ")";
                 }
@@ -196,7 +199,10 @@ namespace MediaBrowser.ServerApplication
                             ItemSortBy.Runtime
                         };
 
-                    var prefs = folder.GetDisplayPreferences(ddlProfile.SelectedItem as User, false);
+                    var prefs =
+                        await
+                        _userManager.GetDisplayPreferences((ddlProfile.SelectedItem as User).Id,
+                                                           folder.DisplayPreferencesId);
                     ddlIndexBy.SelectedItem = prefs != null
                                                   ? prefs.IndexBy ?? LocalizedStrings.Instance.GetString("NoneDispPref")
                                                   : LocalizedStrings.Instance.GetString("NoneDispPref");
@@ -354,7 +360,7 @@ namespace MediaBrowser.ServerApplication
                 var folder = treeItem != null
                                  ? treeItem.Tag as Folder
                                  : null;
-                var prefs = folder != null ? folder.GetDisplayPreferences(CurrentUser, true) : new DisplayPreferences {SortBy = ItemSortBy.SortName};
+                var prefs = folder != null ? _userManager.GetDisplayPreferences(CurrentUser.Id, folder.DisplayPreferencesId).Result : new DisplayPreferences {SortBy = ItemSortBy.SortName};
                 if (folder != null && prefs.IndexBy != ddlIndexBy.SelectedItem as string)
                 {
                     //grab UI context so we can update within the below task
@@ -395,7 +401,7 @@ namespace MediaBrowser.ServerApplication
                 var folder = treeItem != null
                                  ? treeItem.Tag as Folder
                                  : null;
-                var prefs = folder != null ? folder.GetDisplayPreferences(CurrentUser, true) : new DisplayPreferences();
+                var prefs = folder != null ? _userManager.GetDisplayPreferences(CurrentUser.Id, folder.DisplayPreferencesId).Result : new DisplayPreferences();
                 if (folder != null && prefs.SortBy != ddlSortBy.SelectedItem as string)
                 {
                     //grab UI context so we can update within the below task
diff --git a/MediaBrowser.WebDashboard/Api/DashboardService.cs b/MediaBrowser.WebDashboard/Api/DashboardService.cs
index b80b1bffd..f6c64b49e 100644
--- a/MediaBrowser.WebDashboard/Api/DashboardService.cs
+++ b/MediaBrowser.WebDashboard/Api/DashboardService.cs
@@ -163,7 +163,7 @@ namespace MediaBrowser.WebDashboard.Api
         {
             var connections = userManager.RecentConnections.ToArray();
 
-            var dtoBuilder = new DtoBuilder(logger, libraryManager);
+            var dtoBuilder = new DtoBuilder(logger, libraryManager, userManager);
 
             var tasks = userManager.Users.Where(u => connections.Any(c => c.UserId == u.Id)).Select(dtoBuilder.GetUserDto);
             var users = await Task.WhenAll(tasks).ConfigureAwait(false);