update userdata repository

1 files changed, 331 insertions, 446 deletions

diff --git a/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs b/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
index d1355ce8f..4c73b6c6a 100644
--- a/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteUserDataRepository.cs
@@ -1,446 +1,331 @@
-//using System;
-//using System.Collections.Generic;
-//using System.Globalization;
-//using System.IO;
-//using System.Text;
-//using System.Threading;
-//using System.Threading.Tasks;
-//using MediaBrowser.Common.Configuration;
-//using MediaBrowser.Controller.Entities;
-//using MediaBrowser.Controller.Persistence;
-//using MediaBrowser.Model.Logging;
-//using SQLitePCL.pretty;
-
-//namespace Emby.Server.Implementations.Data
-//{
-//    public class SqliteUserDataRepository : BaseSqliteRepository, IUserDataRepository
-//    {
-//        private SQLiteDatabaseConnection _connection;
-
-//        public SqliteUserDataRepository(ILogger logger, IApplicationPaths appPaths)
-//            : base(logger)
-//        {
-//            DbFilePath = Path.Combine(appPaths.DataPath, "userdata_v2.db");
-//        }
-
-//        protected override bool EnableConnectionPooling
-//        {
-//            get { return false; }
-//        }
-
-//        /// <summary>
-//        /// Gets the name of the repository
-//        /// </summary>
-//        /// <value>The name.</value>
-//        public string Name
-//        {
-//            get
-//            {
-//                return "SQLite";
-//            }
-//        }
-
-//        /// <summary>
-//        /// Opens the connection to the database
-//        /// </summary>
-//        /// <returns>Task.</returns>
-//        public void Initialize(SQLiteDatabaseConnection connection, ReaderWriterLockSlim writeLock)
-//        {
-//            WriteLock.Dispose();
-//            WriteLock = writeLock;
-//            _connection = connection;
-
-//            string[] queries = {
-
-//                                "create table if not exists UserDataDb.userdata (key nvarchar, userId GUID, rating float null, played bit, playCount int, isFavorite bit, playbackPositionTicks bigint, lastPlayedDate datetime null)",
-
-//                                "drop index if exists UserDataDb.idx_userdata",
-//                                "drop index if exists UserDataDb.idx_userdata1",
-//                                "drop index if exists UserDataDb.idx_userdata2",
-//                                "drop index if exists UserDataDb.userdataindex1",
-
-//                                "create unique index if not exists UserDataDb.userdataindex on userdata (key, userId)",
-//                                "create index if not exists UserDataDb.userdataindex2 on userdata (key, userId, played)",
-//                                "create index if not exists UserDataDb.userdataindex3 on userdata (key, userId, playbackPositionTicks)",
-//                                "create index if not exists UserDataDb.userdataindex4 on userdata (key, userId, isFavorite)",
-
-//                                //pragmas
-//                                "pragma temp_store = memory",
-
-//                                "pragma shrink_memory"
-//                               };
-
-//            _connection.RunQueries(queries);
-
-//            connection.RunInTransaction(db =>
-//            {
-//                var existingColumnNames = GetColumnNames(db, "userdata");
-
-//                AddColumn(db, "userdata", "AudioStreamIndex", "int", existingColumnNames);
-//                AddColumn(db, "userdata", "SubtitleStreamIndex", "int", existingColumnNames);
-//            });
-//        }
-
-//        /// <summary>
-//        /// Saves the user data.
-//        /// </summary>
-//        /// <param name="userId">The user id.</param>
-//        /// <param name="key">The key.</param>
-//        /// <param name="userData">The user data.</param>
-//        /// <param name="cancellationToken">The cancellation token.</param>
-//        /// <returns>Task.</returns>
-//        /// <exception cref="System.ArgumentNullException">userData
-//        /// or
-//        /// cancellationToken
-//        /// or
-//        /// userId
-//        /// or
-//        /// userDataId</exception>
-//        public Task SaveUserData(Guid userId, string key, UserItemData userData, CancellationToken cancellationToken)
-//        {
-//            if (userData == null)
-//            {
-//                throw new ArgumentNullException("userData");
-//            }
-//            if (userId == Guid.Empty)
-//            {
-//                throw new ArgumentNullException("userId");
-//            }
-//            if (string.IsNullOrEmpty(key))
-//            {
-//                throw new ArgumentNullException("key");
-//            }
-
-//            return PersistUserData(userId, key, userData, cancellationToken);
-//        }
-
-//        public Task SaveAllUserData(Guid userId, IEnumerable<UserItemData> userData, CancellationToken cancellationToken)
-//        {
-//            if (userData == null)
-//            {
-//                throw new ArgumentNullException("userData");
-//            }
-//            if (userId == Guid.Empty)
-//            {
-//                throw new ArgumentNullException("userId");
-//            }
-
-//            return PersistAllUserData(userId, userData, cancellationToken);
-//        }
-
-//        /// <summary>
-//        /// Persists the user data.
-//        /// </summary>
-//        /// <param name="userId">The user id.</param>
-//        /// <param name="key">The key.</param>
-//        /// <param name="userData">The user data.</param>
-//        /// <param name="cancellationToken">The cancellation token.</param>
-//        /// <returns>Task.</returns>
-//        public async Task PersistUserData(Guid userId, string key, UserItemData userData, CancellationToken cancellationToken)
-//        {
-//            cancellationToken.ThrowIfCancellationRequested();
-
-//            await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
-
-//            IDbTransaction transaction = null;
-
-//            try
-//            {
-//                transaction = _connection.BeginTransaction();
-
-//                using (var cmd = _connection.CreateCommand())
-//                {
-//                    cmd.CommandText = "replace into userdata (key, userId, rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex) values (@key, @userId, @rating,@played,@playCount,@isFavorite,@playbackPositionTicks,@lastPlayedDate,@AudioStreamIndex,@SubtitleStreamIndex)";
-
-//                    cmd.Parameters.Add(cmd, "@key", DbType.String).Value = key;
-//                    cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
-//                    cmd.Parameters.Add(cmd, "@rating", DbType.Double).Value = userData.Rating;
-//                    cmd.Parameters.Add(cmd, "@played", DbType.Boolean).Value = userData.Played;
-//                    cmd.Parameters.Add(cmd, "@playCount", DbType.Int32).Value = userData.PlayCount;
-//                    cmd.Parameters.Add(cmd, "@isFavorite", DbType.Boolean).Value = userData.IsFavorite;
-//                    cmd.Parameters.Add(cmd, "@playbackPositionTicks", DbType.Int64).Value = userData.PlaybackPositionTicks;
-//                    cmd.Parameters.Add(cmd, "@lastPlayedDate", DbType.DateTime).Value = userData.LastPlayedDate;
-//                    cmd.Parameters.Add(cmd, "@AudioStreamIndex", DbType.Int32).Value = userData.AudioStreamIndex;
-//                    cmd.Parameters.Add(cmd, "@SubtitleStreamIndex", DbType.Int32).Value = userData.SubtitleStreamIndex;
-
-//                    cmd.Transaction = transaction;
-
-//                    cmd.ExecuteNonQuery();
-//                }
-
-//                transaction.Commit();
-//            }
-//            catch (OperationCanceledException)
-//            {
-//                if (transaction != null)
-//                {
-//                    transaction.Rollback();
-//                }
-
-//                throw;
-//            }
-//            catch (Exception e)
-//            {
-//                Logger.ErrorException("Failed to save user data:", e);
-
-//                if (transaction != null)
-//                {
-//                    transaction.Rollback();
-//                }
-
-//                throw;
-//            }
-//            finally
-//            {
-//                if (transaction != null)
-//                {
-//                    transaction.Dispose();
-//                }
-
-//                WriteLock.Release();
-//            }
-//        }
-
-//        /// <summary>
-//        /// Persist all user data for the specified user
-//        /// </summary>
-//        /// <param name="userId"></param>
-//        /// <param name="userData"></param>
-//        /// <param name="cancellationToken"></param>
-//        /// <returns></returns>
-//        private async Task PersistAllUserData(Guid userId, IEnumerable<UserItemData> userData, CancellationToken cancellationToken)
-//        {
-//            cancellationToken.ThrowIfCancellationRequested();
-
-//            await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
-
-//            IDbTransaction transaction = null;
-
-//            try
-//            {
-//                transaction = _connection.BeginTransaction();
-
-//                foreach (var userItemData in userData)
-//                {
-//                    using (var cmd = _connection.CreateCommand())
-//                    {
-//                        cmd.CommandText = "replace into userdata (key, userId, rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex) values (@key, @userId, @rating,@played,@playCount,@isFavorite,@playbackPositionTicks,@lastPlayedDate,@AudioStreamIndex,@SubtitleStreamIndex)";
-
-//                        cmd.Parameters.Add(cmd, "@key", DbType.String).Value = userItemData.Key;
-//                        cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
-//                        cmd.Parameters.Add(cmd, "@rating", DbType.Double).Value = userItemData.Rating;
-//                        cmd.Parameters.Add(cmd, "@played", DbType.Boolean).Value = userItemData.Played;
-//                        cmd.Parameters.Add(cmd, "@playCount", DbType.Int32).Value = userItemData.PlayCount;
-//                        cmd.Parameters.Add(cmd, "@isFavorite", DbType.Boolean).Value = userItemData.IsFavorite;
-//                        cmd.Parameters.Add(cmd, "@playbackPositionTicks", DbType.Int64).Value = userItemData.PlaybackPositionTicks;
-//                        cmd.Parameters.Add(cmd, "@lastPlayedDate", DbType.DateTime).Value = userItemData.LastPlayedDate;
-//                        cmd.Parameters.Add(cmd, "@AudioStreamIndex", DbType.Int32).Value = userItemData.AudioStreamIndex;
-//                        cmd.Parameters.Add(cmd, "@SubtitleStreamIndex", DbType.Int32).Value = userItemData.SubtitleStreamIndex;
-
-//                        cmd.Transaction = transaction;
-
-//                        cmd.ExecuteNonQuery();
-//                    }
-
-//                    cancellationToken.ThrowIfCancellationRequested();
-//                }
-
-//                transaction.Commit();
-//            }
-//            catch (OperationCanceledException)
-//            {
-//                if (transaction != null)
-//                {
-//                    transaction.Rollback();
-//                }
-
-//                throw;
-//            }
-//            catch (Exception e)
-//            {
-//                Logger.ErrorException("Failed to save user data:", e);
-
-//                if (transaction != null)
-//                {
-//                    transaction.Rollback();
-//                }
-
-//                throw;
-//            }
-//            finally
-//            {
-//                if (transaction != null)
-//                {
-//                    transaction.Dispose();
-//                }
-
-//                WriteLock.Release();
-//            }
-//        }
-
-//        /// <summary>
-//        /// Gets the user data.
-//        /// </summary>
-//        /// <param name="userId">The user id.</param>
-//        /// <param name="key">The key.</param>
-//        /// <returns>Task{UserItemData}.</returns>
-//        /// <exception cref="System.ArgumentNullException">
-//        /// userId
-//        /// or
-//        /// key
-//        /// </exception>
-//        public UserItemData GetUserData(Guid userId, string key)
-//        {
-//            if (userId == Guid.Empty)
-//            {
-//                throw new ArgumentNullException("userId");
-//            }
-//            if (string.IsNullOrEmpty(key))
-//            {
-//                throw new ArgumentNullException("key");
-//            }
-
-//            using (var cmd = _connection.CreateCommand())
-//            {
-//                cmd.CommandText = "select key,userid,rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex from userdata where key = @key and userId=@userId";
-
-//                cmd.Parameters.Add(cmd, "@key", DbType.String).Value = key;
-//                cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
-
-//                using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
-//                {
-//                    if (reader.Read())
-//                    {
-//                        return ReadRow(reader);
-//                    }
-//                }
-
-//                return null;
-//            }
-//        }
-
-//        public UserItemData GetUserData(Guid userId, List<string> keys)
-//        {
-//            if (userId == Guid.Empty)
-//            {
-//                throw new ArgumentNullException("userId");
-//            }
-//            if (keys == null)
-//            {
-//                throw new ArgumentNullException("keys");
-//            }
-
-//            using (var cmd = _connection.CreateCommand())
-//            {
-//                var index = 0;
-//                var userdataKeys = new List<string>();
-//                var builder = new StringBuilder();
-//                foreach (var key in keys)
-//                {
-//                    var paramName = "@Key" + index;
-//                    userdataKeys.Add("Key =" + paramName);
-//                    cmd.Parameters.Add(cmd, paramName, DbType.String).Value = key;
-//                    builder.Append(" WHEN Key=" + paramName + " THEN " + index);
-//                    index++;
-//                    break;
-//                }
-
-//                var keyText = string.Join(" OR ", userdataKeys.ToArray());
-
-//                cmd.CommandText = "select key,userid,rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex from userdata where userId=@userId AND (" + keyText + ") ";
-
-//                cmd.CommandText += " ORDER BY (Case " + builder + " Else " + keys.Count.ToString(CultureInfo.InvariantCulture) + " End )";
-//                cmd.CommandText += " LIMIT 1";
-
-//                cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
-
-//                using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
-//                {
-//                    if (reader.Read())
-//                    {
-//                        return ReadRow(reader);
-//                    }
-//                }
-
-//                return null;
-//            }
-//        }
-
-//        /// <summary>
-//        /// Return all user-data associated with the given user
-//        /// </summary>
-//        /// <param name="userId"></param>
-//        /// <returns></returns>
-//        public IEnumerable<UserItemData> GetAllUserData(Guid userId)
-//        {
-//            if (userId == Guid.Empty)
-//            {
-//                throw new ArgumentNullException("userId");
-//            }
-
-//            using (var cmd = _connection.CreateCommand())
-//            {
-//                cmd.CommandText = "select key,userid,rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex from userdata where userId=@userId";
-
-//                cmd.Parameters.Add(cmd, "@userId", DbType.Guid).Value = userId;
-
-//                using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult))
-//                {
-//                    while (reader.Read())
-//                    {
-//                        yield return ReadRow(reader);
-//                    }
-//                }
-//            }
-//        }
-
-//        /// <summary>
-//        /// Read a row from the specified reader into the provided userData object
-//        /// </summary>
-//        /// <param name="reader"></param>
-//        private UserItemData ReadRow(IDataReader reader)
-//        {
-//            var userData = new UserItemData();
-
-//            userData.Key = reader.GetString(0);
-//            userData.UserId = reader.GetGuid(1);
-
-//            if (!reader.IsDBNull(2))
-//            {
-//                userData.Rating = reader.GetDouble(2);
-//            }
-
-//            userData.Played = reader.GetBoolean(3);
-//            userData.PlayCount = reader.GetInt32(4);
-//            userData.IsFavorite = reader.GetBoolean(5);
-//            userData.PlaybackPositionTicks = reader.GetInt64(6);
-
-//            if (!reader.IsDBNull(7))
-//            {
-//                userData.LastPlayedDate = reader.GetDateTime(7).ToUniversalTime();
-//            }
-
-//            if (!reader.IsDBNull(8))
-//            {
-//                userData.AudioStreamIndex = reader.GetInt32(8);
-//            }
-
-//            if (!reader.IsDBNull(9))
-//            {
-//                userData.SubtitleStreamIndex = reader.GetInt32(9);
-//            }
-
-//            return userData;
-//        }
-
-//        protected override void Dispose(bool dispose)
-//        {
-//            // handled by library database
-//        }
-
-//        protected override void CloseConnection()
-//        {
-//            // handled by library database
-//        }
-//    }
-//}
\ No newline at end of file
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Persistence;
+using MediaBrowser.Model.Logging;
+using SQLitePCL.pretty;
+
+namespace Emby.Server.Implementations.Data
+{
+    public class SqliteUserDataRepository : BaseSqliteRepository, IUserDataRepository
+    {
+        private SQLiteDatabaseConnection _connection;
+
+        public SqliteUserDataRepository(ILogger logger, IApplicationPaths appPaths)
+            : base(logger)
+        {
+            DbFilePath = Path.Combine(appPaths.DataPath, "userdata_v2.db");
+        }
+
+        protected override bool EnableConnectionPooling
+        {
+            get { return false; }
+        }
+
+        /// <summary>
+        /// Gets the name of the repository
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name
+        {
+            get
+            {
+                return "SQLite";
+            }
+        }
+
+        /// <summary>
+        /// Opens the connection to the database
+        /// </summary>
+        /// <returns>Task.</returns>
+        public void Initialize(SQLiteDatabaseConnection connection, ReaderWriterLockSlim writeLock)
+        {
+            WriteLock.Dispose();
+            WriteLock = writeLock;
+            _connection = connection;
+
+            string[] queries = {
+
+                                "create table if not exists UserDataDb.userdata (key nvarchar, userId GUID, rating float null, played bit, playCount int, isFavorite bit, playbackPositionTicks bigint, lastPlayedDate datetime null)",
+
+                                "drop index if exists UserDataDb.idx_userdata",
+                                "drop index if exists UserDataDb.idx_userdata1",
+                                "drop index if exists UserDataDb.idx_userdata2",
+                                "drop index if exists UserDataDb.userdataindex1",
+
+                                "create unique index if not exists UserDataDb.userdataindex on userdata (key, userId)",
+                                "create index if not exists UserDataDb.userdataindex2 on userdata (key, userId, played)",
+                                "create index if not exists UserDataDb.userdataindex3 on userdata (key, userId, playbackPositionTicks)",
+                                "create index if not exists UserDataDb.userdataindex4 on userdata (key, userId, isFavorite)",
+
+                                //pragmas
+                                "pragma temp_store = memory",
+
+                                "pragma shrink_memory"
+                               };
+
+            _connection.RunQueries(queries);
+
+            connection.RunInTransaction(db =>
+            {
+                var existingColumnNames = GetColumnNames(db, "userdata");
+
+                AddColumn(db, "userdata", "AudioStreamIndex", "int", existingColumnNames);
+                AddColumn(db, "userdata", "SubtitleStreamIndex", "int", existingColumnNames);
+            });
+        }
+
+        /// <summary>
+        /// Saves the user data.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="key">The key.</param>
+        /// <param name="userData">The user data.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        /// <exception cref="System.ArgumentNullException">userData
+        /// or
+        /// cancellationToken
+        /// or
+        /// userId
+        /// or
+        /// userDataId</exception>
+        public Task SaveUserData(Guid userId, string key, UserItemData userData, CancellationToken cancellationToken)
+        {
+            if (userData == null)
+            {
+                throw new ArgumentNullException("userData");
+            }
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (string.IsNullOrEmpty(key))
+            {
+                throw new ArgumentNullException("key");
+            }
+
+            return PersistUserData(userId, key, userData, cancellationToken);
+        }
+
+        public Task SaveAllUserData(Guid userId, IEnumerable<UserItemData> userData, CancellationToken cancellationToken)
+        {
+            if (userData == null)
+            {
+                throw new ArgumentNullException("userData");
+            }
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+
+            return PersistAllUserData(userId, userData.ToList(), cancellationToken);
+        }
+
+        /// <summary>
+        /// Persists the user data.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="key">The key.</param>
+        /// <param name="userData">The user data.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public async Task PersistUserData(Guid userId, string key, UserItemData userData, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            using (WriteLock.Write())
+            {
+                _connection.RunInTransaction(db =>
+                {
+                    SaveUserData(db, userId, key, userData);
+                });
+            }
+        }
+
+        private void SaveUserData(IDatabaseConnection db, Guid userId, string key, UserItemData userData)
+        {
+            var paramList = new List<object>();
+            var commandText = "replace into userdata (key, userId, rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex) values (?, ?, ?,?,?,?,?,?,?,?)";
+
+            paramList.Add(key);
+            paramList.Add(userId.ToGuidParamValue());
+            paramList.Add(userData.Rating);
+            paramList.Add(userData.Played);
+            paramList.Add(userData.PlayCount);
+            paramList.Add(userData.IsFavorite);
+            paramList.Add(userData.PlaybackPositionTicks);
+
+            if (userData.LastPlayedDate.HasValue)
+            {
+                paramList.Add(userData.LastPlayedDate.Value.ToDateTimeParamValue());
+            }
+            else
+            {
+                paramList.Add(null);
+            }
+            paramList.Add(userData.AudioStreamIndex);
+            paramList.Add(userData.SubtitleStreamIndex);
+
+            db.Execute(commandText, paramList.ToArray());
+        }
+
+        /// <summary>
+        /// Persist all user data for the specified user
+        /// </summary>
+        private async Task PersistAllUserData(Guid userId, List<UserItemData> userDataList, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+
+            using (WriteLock.Write())
+            {
+                _connection.RunInTransaction(db =>
+                {
+                    foreach (var userItemData in userDataList)
+                    {
+                        SaveUserData(db, userId, userItemData.Key, userItemData);
+                    }
+                });
+            }
+        }
+
+        /// <summary>
+        /// Gets the user data.
+        /// </summary>
+        /// <param name="userId">The user id.</param>
+        /// <param name="key">The key.</param>
+        /// <returns>Task{UserItemData}.</returns>
+        /// <exception cref="System.ArgumentNullException">
+        /// userId
+        /// or
+        /// key
+        /// </exception>
+        public UserItemData GetUserData(Guid userId, string key)
+        {
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (string.IsNullOrEmpty(key))
+            {
+                throw new ArgumentNullException("key");
+            }
+
+            var commandText = "select key,userid,rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex from userdata where key = ? and userId=?";
+
+            var paramList = new List<object>();
+            paramList.Add(key);
+            paramList.Add(userId.ToGuidParamValue());
+
+            foreach (var row in _connection.Query(commandText, paramList.ToArray()))
+            {
+                return ReadRow(row);
+            }
+
+            return null;
+        }
+
+        public UserItemData GetUserData(Guid userId, List<string> keys)
+        {
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+            if (keys == null)
+            {
+                throw new ArgumentNullException("keys");
+            }
+
+            if (keys.Count == 0)
+            {
+                return null;
+            }
+
+            return GetUserData(userId, keys[0]);
+        }
+
+        /// <summary>
+        /// Return all user-data associated with the given user
+        /// </summary>
+        /// <param name="userId"></param>
+        /// <returns></returns>
+        public IEnumerable<UserItemData> GetAllUserData(Guid userId)
+        {
+            if (userId == Guid.Empty)
+            {
+                throw new ArgumentNullException("userId");
+            }
+
+            var list = new List<UserItemData>();
+
+            using (WriteLock.Read())
+            {
+                var commandText = "select key,userid,rating,played,playCount,isFavorite,playbackPositionTicks,lastPlayedDate,AudioStreamIndex,SubtitleStreamIndex from userdata where userId=?";
+
+                var paramList = new List<object>();
+                paramList.Add(userId.ToGuidParamValue());
+
+                foreach (var row in _connection.Query(commandText, paramList.ToArray()))
+                {
+                    list.Add(ReadRow(row));
+                }
+            }
+
+            return list;
+        }
+
+        /// <summary>
+        /// Read a row from the specified reader into the provided userData object
+        /// </summary>
+        /// <param name="reader"></param>
+        private UserItemData ReadRow(IReadOnlyList<IResultSetValue> reader)
+        {
+            var userData = new UserItemData();
+
+            userData.Key = reader[0].ToString();
+            userData.UserId = reader[1].ReadGuid();
+
+            if (reader[2].SQLiteType != SQLiteType.Null)
+            {
+                userData.Rating = reader[2].ToDouble();
+            }
+
+            userData.Played = reader[3].ToBool();
+            userData.PlayCount = reader[4].ToInt();
+            userData.IsFavorite = reader[5].ToBool();
+            userData.PlaybackPositionTicks = reader[6].ToInt64();
+
+            if (reader[7].SQLiteType != SQLiteType.Null)
+            {
+                userData.LastPlayedDate = reader[7].ReadDateTime();
+            }
+
+            if (reader[8].SQLiteType != SQLiteType.Null)
+            {
+                userData.AudioStreamIndex = reader[8].ToInt();
+            }
+
+            if (reader[9].SQLiteType != SQLiteType.Null)
+            {
+                userData.SubtitleStreamIndex = reader[9].ToInt();
+            }
+
+            return userData;
+        }
+
+        protected override void Dispose(bool dispose)
+        {
+            // handled by library database
+        }
+
+        protected override void CloseConnection()
+        {
+            // handled by library database
+        }
+    }
+}
\ No newline at end of file