8 files changed, 19 insertions, 25 deletions
diff --git a/MediaBrowser.Api/UserLibrary/ArtistsService.cs b/MediaBrowser.Api/UserLibrary/ArtistsService.cs
index 7c1519e9f..4018759d9 100644
--- a/MediaBrowser.Api/UserLibrary/ArtistsService.cs
+++ b/MediaBrowser.Api/UserLibrary/ArtistsService.cs
@@ -132,7 +132,7 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
             throw new NotImplementedException();
         }
diff --git a/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs b/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
index 1d0065c7c..fca842289 100644
--- a/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
+++ b/MediaBrowser.Api/UserLibrary/BaseItemsByNameService.cs
@@ -257,7 +257,7 @@ namespace MediaBrowser.Api.UserLibrary
                 parentItem = string.IsNullOrEmpty(request.ParentId) ? LibraryManager.RootFolder : LibraryManager.GetItemById(request.ParentId);
             }
 
-            IEnumerable<BaseItem> items;
+            IList<BaseItem> items;
 
             var excludeItemTypes = request.GetExcludeItemTypes();
             var includeItemTypes = request.GetIncludeItemTypes();
@@ -280,19 +280,19 @@ namespace MediaBrowser.Api.UserLibrary
                 if (!string.IsNullOrWhiteSpace(request.UserId))
                 {
                     items = request.Recursive ?
-                        folder.GetRecursiveChildren(user, query) :
-                        folder.GetChildren(user, true).Where(filter);
+                        folder.GetRecursiveChildren(user, query).ToList() :
+                        folder.GetChildren(user, true).Where(filter).ToList();
                 }
                 else
                 {
                     items = request.Recursive ?
                         folder.GetRecursiveChildren(filter) :
-                        folder.Children.Where(filter);
+                        folder.Children.Where(filter).ToList();
                 }
             }
             else
             {
-                items = new[] { parentItem }.Where(filter);
+                items = new[] { parentItem }.Where(filter).ToList();
             }
 
             var extractedItems = GetAllItems(request, items);
@@ -500,7 +500,7 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Task{`0}}.</returns>
-        protected abstract IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items);
+        protected abstract IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items);
     }
 
     /// <summary>
diff --git a/MediaBrowser.Api/UserLibrary/GameGenresService.cs b/MediaBrowser.Api/UserLibrary/GameGenresService.cs
index 56730c1b2..0b2ca4daf 100644
--- a/MediaBrowser.Api/UserLibrary/GameGenresService.cs
+++ b/MediaBrowser.Api/UserLibrary/GameGenresService.cs
@@ -93,7 +93,7 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
             throw new NotImplementedException();
         }
diff --git a/MediaBrowser.Api/UserLibrary/GenresService.cs b/MediaBrowser.Api/UserLibrary/GenresService.cs
index fc387e5e3..d913f52d9 100644
--- a/MediaBrowser.Api/UserLibrary/GenresService.cs
+++ b/MediaBrowser.Api/UserLibrary/GenresService.cs
@@ -115,7 +115,7 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
             throw new NotImplementedException();
         }
diff --git a/MediaBrowser.Api/UserLibrary/MusicGenresService.cs b/MediaBrowser.Api/UserLibrary/MusicGenresService.cs
index d1d4aa634..36dc773d4 100644
--- a/MediaBrowser.Api/UserLibrary/MusicGenresService.cs
+++ b/MediaBrowser.Api/UserLibrary/MusicGenresService.cs
@@ -94,7 +94,7 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
             throw new NotImplementedException();
         }
diff --git a/MediaBrowser.Api/UserLibrary/PersonsService.cs b/MediaBrowser.Api/UserLibrary/PersonsService.cs
index 21f416025..9417447d8 100644
--- a/MediaBrowser.Api/UserLibrary/PersonsService.cs
+++ b/MediaBrowser.Api/UserLibrary/PersonsService.cs
@@ -96,15 +96,13 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
             var inputPersonTypes = ((GetPersons)request).PersonTypes;
             var personTypes = string.IsNullOrEmpty(inputPersonTypes) ? new string[] { } : inputPersonTypes.Split(',');
 
-            var itemsList = items.ToList();
-
             // Either get all people, or all people filtered by a specific person type
-            var allPeople = GetAllPeople(itemsList, personTypes);
+            var allPeople = GetAllPeople(items, personTypes);
 
             return allPeople
                 .Select(i => i.Name)
@@ -132,13 +130,13 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="itemsList">The items list.</param>
         /// <param name="personTypes">The person types.</param>
         /// <returns>IEnumerable{PersonInfo}.</returns>
-        private IEnumerable<PersonInfo> GetAllPeople(IEnumerable<BaseItem> itemsList, IEnumerable<string> personTypes)
+        private IEnumerable<PersonInfo> GetAllPeople(IList<BaseItem> itemsList, string[] personTypes)
         {
-            var allIds = itemsList.Select(i => i.Id).ToList();
+            var allIds = itemsList.Select(i => i.Id).ToArray();
 
             var allPeople = LibraryManager.GetPeople(new InternalPeopleQuery
             {
-                PersonTypes = personTypes.ToList()
+                PersonTypes = personTypes
             });
 
             return allPeople.Where(i => allIds.Contains(i.ItemId)).OrderBy(p => p.SortOrder ?? int.MaxValue).ThenBy(p => p.Type);
diff --git a/MediaBrowser.Api/UserLibrary/StudiosService.cs b/MediaBrowser.Api/UserLibrary/StudiosService.cs
index 7ac1264e8..f10cccbb1 100644
--- a/MediaBrowser.Api/UserLibrary/StudiosService.cs
+++ b/MediaBrowser.Api/UserLibrary/StudiosService.cs
@@ -103,11 +103,9 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
-            var itemsList = items.Where(i => i.Studios != null).ToList();
-
-            return itemsList
+            return items
                 .SelectMany(i => i.Studios)
                 .DistinctNames()
                 .Select(name => LibraryManager.GetStudio(name));
diff --git a/MediaBrowser.Api/UserLibrary/YearsService.cs b/MediaBrowser.Api/UserLibrary/YearsService.cs
index 1059b72cb..db622a9b3 100644
--- a/MediaBrowser.Api/UserLibrary/YearsService.cs
+++ b/MediaBrowser.Api/UserLibrary/YearsService.cs
@@ -96,11 +96,9 @@ namespace MediaBrowser.Api.UserLibrary
         /// <param name="request">The request.</param>
         /// <param name="items">The items.</param>
         /// <returns>IEnumerable{Tuple{System.StringFunc{System.Int32}}}.</returns>
-        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items)
+        protected override IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IList<BaseItem> items)
         {
-            var itemsList = items.Where(i => i.ProductionYear != null).ToList();
-
-            return itemsList
+            return items
                 .Select(i => i.ProductionYear ?? 0)
                 .Where(i => i > 0)
                 .Distinct()