Much faster for grid refresh

ApplicationServices/LibraryCommands.cs

@@ -119,6 +119,9 @@ namespace ApplicationServices
 
 				var udi = book.UserDefinedItem;
 
+				if (udi.Tags == newTags)
+					return 0;
+
 				// Attach() NoTracking entities before SaveChanges()
 				udi.Tags = newTags;
 				context.Attach(udi).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
@@ -144,6 +147,9 @@ namespace ApplicationServices
 
 				var udi = libraryBook.Book.UserDefinedItem;
 
+				if (udi.BookStatus == liberatedStatus && udi.BookLocation == finalAudioPath)
+					return 0;
+
 				// Attach() NoTracking entities before SaveChanges()
 				udi.BookStatus = liberatedStatus;
 				udi.BookLocation = finalAudioPath;
@@ -169,6 +175,9 @@ namespace ApplicationServices
 
 				var udi = libraryBook.Book.UserDefinedItem;
 
+				if (udi.PdfStatus == liberatedStatus)
+					return 0;
+
 				// Attach() NoTracking entities before SaveChanges()
 				udi.PdfStatus = liberatedStatus;
 				context.Attach(udi).State = Microsoft.EntityFrameworkCore.EntityState.Modified;

ApplicationServices/SearchEngineCommands.cs

@@ -7,10 +7,10 @@ namespace ApplicationServices
 {
 	public static class SearchEngineCommands
 	{
-		public static void FullReIndex()
+		public static void FullReIndex(SearchEngine engine = null)
 		{
-			var engine = new SearchEngine(DbContexts.GetContext());
+			engine ??= new SearchEngine();
-			engine.CreateNewIndex();
+			engine.CreateNewIndex(DbContexts.GetContext());
 		}
 
 		public static SearchResultSet Search(string searchString) => performSearchEngineFunc_safe(e =>
@@ -27,28 +27,28 @@ namespace ApplicationServices
 
 		private static void performSearchEngineAction_safe(Action<SearchEngine> action)
 		{
-			var engine = new SearchEngine(DbContexts.GetContext());
+			var engine = new SearchEngine();
 			try
 			{
 				action(engine);
 			}
 			catch (FileNotFoundException)
 			{
-				FullReIndex();
+				FullReIndex(engine);
 				action(engine);
 			}
 		}
 
 		private static T performSearchEngineFunc_safe<T>(Func<SearchEngine, T> action)
 		{
-			var engine = new SearchEngine(DbContexts.GetContext());
+			var engine = new SearchEngine();
 			try
 			{
 				return action(engine);
 			}
 			catch (FileNotFoundException)
 			{
-				FullReIndex();
+				FullReIndex(engine);
 				return action(engine);
 			}
 		}

DataLayer/QueryObjects/BookQueries.cs

@@ -6,6 +6,8 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DataLayer
 {
+    // only library importing should use tracking. All else should be NoTracking.
+    // only library importing should directly query Book. All else should use LibraryBook
     public static class BookQueries
     {
         public static Book GetBook_Flat_NoTracking(this LibationContext context, string productId)

DataLayer/QueryObjects/LibraryQueries.cs

@@ -4,6 +4,8 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DataLayer
 {
+    // only library importing should use tracking. All else should be NoTracking.
+    // only library importing should directly query Book. All else should use LibraryBook
     public static class LibraryQueries
 	{
         //// tracking is a bad idea for main grid. it prevents anything else from updating entities unless getting them from the grid

LibationLauncher/Program.cs

@@ -361,7 +361,7 @@ namespace LibationLauncher
 			config.ConfigureLogging();
 
 			// Fwd Console to serilog.
-			// Serilog also write to Console (should probably change this) so it might be asking for trouble.
+			// Serilog also writes to Console (should probably change this) so it might be asking for trouble.
 			// SerilogTextWriter needs to be more robust and tested. Esp the Write() methods.
 			// Empirical testing so far has shown no issues.
 			Console.SetOut(new MultiTextWriter(origOut, new SerilogTextWriter()));

LibationSearchEngine/SearchEngine.cs

@@ -18,8 +18,6 @@ namespace LibationSearchEngine
     {
         public const Lucene.Net.Util.Version Version = Lucene.Net.Util.Version.LUCENE_30;
 
-        private LibationContext context { get; }
-
         // not customizable. don't move to config
         private static string SearchEngineDirectory { get; }
             = new System.IO.DirectoryInfo(Configuration.Instance.LibationFiles).CreateSubdirectory("SearchEngine").FullName;
@@ -32,8 +30,6 @@ namespace LibationSearchEngine
         // the workaround which allows displaying all books when query is empty
         public const string ALL_QUERY = "*:*";
 
-        public SearchEngine(LibationContext context) => this.context = context;
-
 		#region index rules
 		private static ReadOnlyDictionary<string, Func<LibraryBook, string>> idIndexRules { get; }
             = new ReadOnlyDictionary<string, Func<LibraryBook, string>>(
@@ -202,7 +198,7 @@ namespace LibationSearchEngine
         /// create new. ie: full re-index
         /// </summary>
         /// <param name="overwrite"></param>
-        public void CreateNewIndex(bool overwrite = true)
+        public void CreateNewIndex(LibationContext context, bool overwrite = true)
         {
             //  300 titles:  200- 400 ms
             // 1021 titles: 1777-2250 ms
@@ -235,7 +231,7 @@ namespace LibationSearchEngine
         }
 
 		/// <summary>Long running. Use await Task.Run(() => UpdateBook(productId))</summary>
-		public void UpdateBook(string productId)
+		public void UpdateBook(LibationContext context, string productId)
         {
             var libraryBook = context.GetLibraryBook_Flat_NoTracking(productId);
             var term = new Term(_ID_, productId);

LibationWinForms/Dialogs/BookDetailsDialog.Designer.cs

@@ -1,6 +1,6 @@
 namespace LibationWinForms.Dialogs
 {
-    partial class EditTagsDialog
+    partial class BookDetailsDialog
     {
         /// <summary>
         /// Required designer variable.

LibationWinForms/Dialogs/BookDetailsDialog.cs

@@ -3,15 +3,15 @@ using System.Windows.Forms;
 
 namespace LibationWinForms.Dialogs
 {
-    public partial class EditTagsDialog : Form
+    public partial class BookDetailsDialog : Form
     {
         public string NewTags { get; private set; }
 
-        public EditTagsDialog()
+        public BookDetailsDialog()
         {
             InitializeComponent();
         }
-        public EditTagsDialog(string title, string rawTags) : this()
+        public BookDetailsDialog(string title, string rawTags) : this()
         {
             this.Text = $"Edit Tags - {title}";
 

LibationWinForms/ProductsGrid.cs

@@ -255,11 +255,11 @@ namespace LibationWinForms
             // EditTagsDialog should display better-formatted title
             liveGridEntry.TryDisplayValue(nameof(liveGridEntry.Title), out string value);
 
-            var editTagsForm = new EditTagsDialog(value, liveGridEntry.Tags);
+            var bookDetailsForm = new BookDetailsDialog(value, liveGridEntry.Tags);
-            if (editTagsForm.ShowDialog() != DialogResult.OK)
+            if (bookDetailsForm.ShowDialog() != DialogResult.OK)
                 return;
 
-			var qtyChanges = LibraryCommands.UpdateTags(liveGridEntry.GetBook(), editTagsForm.NewTags);
+			var qtyChanges = LibraryCommands.UpdateTags(liveGridEntry.GetBook(), bookDetailsForm.NewTags);
 			if (qtyChanges == 0)
                 return;