separate the concepts of UserDefinedItem being updated in memory vs successful persistence
This commit is contained in:
Robert McRackan
parent
7b9c5c0f4f
commit
dc0dd3474b
@ -155,7 +155,12 @@ namespace ApplicationServices
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#endregion
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#region Update book details
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/// <summary>
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/// Occurs when <see cref="UserDefinedItem.Tags"/>, <see cref="UserDefinedItem.BookStatus"/>, or <see cref="UserDefinedItem.PdfStatus"/>
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/// changed values are successfully persisted.
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/// </summary>
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public static event EventHandler<string> BookUserDefinedItemCommitted;
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public static int UpdateUserDefinedItem(Book book)
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{
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try
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@ -166,7 +171,10 @@ namespace ApplicationServices
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context.Attach(book.UserDefinedItem).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
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var qtyChanges = context.SaveChanges();
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if (qtyChanges > 0)
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{
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SearchEngineCommands.UpdateLiberatedStatus(book);
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BookUserDefinedItemCommitted?.Invoke(null, book.AudibleProductId);
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}
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return qtyChanges;
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}
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@ -136,6 +136,7 @@ namespace DataLayer
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#endregion
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/// <summary>
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/// Occurs when <see cref="Tags"/>, <see cref="BookStatus"/>, or <see cref="PdfStatus"/> values change.
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/// This signals the change of the in-memory value; it does not ensure that the new value has been persisted.
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/// </summary>
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public static event EventHandler<string> ItemChanged;
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public override string ToString() => $"{Book} {Rating} {Tags}";
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@ -1,57 +0,0 @@
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FOR QUICK MIGRATION INSTRUCTIONS:
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_DB_NOTES.txt
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HOW TO CREATE: EF CORE PROJECT
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==============================
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example is for sqlite but the same works with MsSql
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nuget
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Microsoft.EntityFrameworkCore.Tools (needed for using Package Manager Console)
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Microsoft.EntityFrameworkCore.Sqlite
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MIGRATIONS
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require core, not standard
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this can be a problem b/c standard and framework can only reference standard, not core
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TO USE MIGRATIONS (core and/or standard)
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add to csproj
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<PropertyGroup>
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<GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
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</PropertyGroup>
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TO USE MIGRATIONS AS *BOTH* CORE AND STANDARD
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edit csproj
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pluralize this xml tag
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from: TargetFramework
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to: TargetFrameworks
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inside of TargetFrameworks
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from: netstandard2.1
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to: netcoreapp3.1;netstandard2.1
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run. error
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SQLite Error 1: 'no such table: Blogs'.
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set project "Set as StartUp Project"
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Tools >> Nuget Package Manager >> Package Manager Console
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default project: Examples\SQLite_NETCore2_0
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PM> add-migration InitialCreate
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PM> Update-Database
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if add-migration xyz throws and error, don't take the error msg at face value. try again with add-migration xyz -verbose
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new sqlite .db file created: Copy always/Copy if newer
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or copy .db file to destination
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relative:
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optionsBuilder.UseSqlite("Data Source=blogging.db");
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absolute (use fwd slashes):
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optionsBuilder.UseSqlite("Data Source=C:/foo/bar/blogging.db");
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REFERENCE ARTICLES
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------------------
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https://docs.microsoft.com/en-us/ef/core/get-started/netcore/new-db-sqlite
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https://carlos.mendible.com/2016/07/11/step-by-step-dotnet-core-and-entity-framework-core/
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https://www.benday.com/2017/12/19/ef-core-2-0-migrations-without-hard-coded-connection-strings/
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@ -13,7 +13,7 @@
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<!-- <PublishSingleFile>true</PublishSingleFile> -->
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<RuntimeIdentifier>win-x64</RuntimeIdentifier>
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<Version>5.6.1.0</Version>
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<Version>5.6.2.1</Version>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
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@ -32,7 +32,7 @@ namespace LibationWinForms
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// independent UI updates
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this.Load += (_, __) => RestoreSizeAndLocation();
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this.Load += (_, __) => RefreshImportMenu();
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UserDefinedItem.ItemChanged += setBackupCounts;
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LibraryCommands.BookUserDefinedItemCommitted += setBackupCounts;
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var format = System.Drawing.Imaging.ImageFormat.Jpeg;
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PictureStorage.SetDefaultImage(PictureSize._80x80, Properties.Resources.default_cover_80x80.ToBytes(format));
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@ -1,25 +1,9 @@
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-- begin VERSIONING ---------------------------------------------------------------------------------------------------------------------
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https://github.com/rmcrackan/Libation/releases
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v3.1.8 : Experimental: add Australia to locale options
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v3.1.7 : Improved logging
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v3.1.6 : Bugfix: some series indexes/sequences formats cause library not to import
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v3.1.5 : Bugfix: some series indexes/sequences could cause library not to import
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v3.1.4 : Bugfix: IsAuthorNarrated was returning no books
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v3.1.3 : fix weirdness with build number
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v3.1.2 : minor bug fixes
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pre-github versions:
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v3.1.1 : Check if upgrade available on github
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v3.1.0 : FIRST PUBLIC RELEASE
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v3.1-beta.11 : Improved configuration and settings file management. Configurable logging
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v3.1-beta.10 : New feature: clicking Liberate button on a liberated item navigates to that audio file
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v3.1-beta.9 : New feature: liberate individual book
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v3.1-beta.8 : Bugfix: decrypt file conflict
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v3.1-beta.7 : Bugfix: decrypt book with no author
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v3.1-beta.6 : Improved logging
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v3.1-beta.5 : Improved importing
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v3.1-beta.4 : Added beta-specific logging
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v3.1-beta.3 : fixed known performance issue: Full-screen grid is slow to respond loading when books aren't liberated
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v3.1-beta.2 : fixed known performance issue: Tag add/edit
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v3.1-beta.1 : RELEASE TO BETA
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v3.0.3 : Switch to SQLite. No longer relies on LocalDB, which must be installed separately
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v3.0.2 : Final using LocalDB
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@ -29,29 +13,6 @@ v2 : new library page scraping. still chrome cookies. all decryption is handled
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v1 : old library ajax scraping. wish list scraping. chrome cookies. directly call local inAudible. .net framework
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-- end VERSIONING ---------------------------------------------------------------------------------------------------------------------
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-- begin HOW TO PUBLISH ---------------------------------------------------------------------------------------------------------------------
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OPTION 1: UI
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rt-clk project project > Publish...
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click Publish
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OPTION 2: cmd line
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change dir to folder containing project
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cd C:\[full...path]\Libation\LibationWinForms
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this will use the parameters specified in csproj
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dotnet publish -c Release
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OPTION 3: cmd line, custom
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open csproj
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remove: PublishTrimmed, PublishReadyToRun, RuntimeIdentifier
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run customized publish. examples:
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publish all platforms
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dotnet publish -c Release
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publish win64 platform only
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dotnet publish -r win-x64 -c Release
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publish win64 platform, single-file
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dotnet publish -r win-x64 -c Release
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-- end HOW TO PUBLISH ---------------------------------------------------------------------------------------------------------------------
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-- begin IMAGES/ICONS ---------------------------------------------------------------------------------------------------------------------
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edit tags icon images from:
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icons8.com
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@ -60,32 +21,9 @@ edit tags icon images from:
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'edit' icon: https://www.iconfinder.com/icons/383147/edit_icon
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-- end IMAGES/ICONS ---------------------------------------------------------------------------------------------------------------------
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-- begin AUDIBLE DETAILS ---------------------------------------------------------------------------------------------------------------------
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alternate book id (eg BK_RAND_006061) is called 'sku' , 'sku_lite' , 'prod_id' , 'product_id' in different parts of the site
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-- end AUDIBLE DETAILS ---------------------------------------------------------------------------------------------------------------------
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-- begin SOLUTION LAYOUT ---------------------------------------------------------------------------------------------------------------------
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do NOT combine jsons for
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- audible-scraped persistence: library, book details
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- libation-generated persistence: FileLocations.json
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- user-defined persistence: BookTags.json
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-- end SOLUTION LAYOUT ---------------------------------------------------------------------------------------------------------------------
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-- begin EF CORE ---------------------------------------------------------------------------------------------------------------------
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transaction notes
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-----------------
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// https://msdn.microsoft.com/en-us/data/dn456843.aspx
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// Rollback is called by transaction Dispose(). No need to call it explicitly
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using var dbContext = new LibationContext();
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using var dbContextTransaction = dbContext.Database.BeginTransaction();
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refreshAction(dbContext, productItems);
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dbContext.SaveChanges();
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dbContextTransaction.Commit();
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aggregate root is transactional boundary
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// //context.Database.CurrentTransaction
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//var dbTransaction = Microsoft.EntityFrameworkCore.Storage.DbContextTransactionExtensions.GetDbTransaction(context.Database.CurrentTransaction);
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// // test with and without : using TransactionScope scope = new TransactionScope();
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//System.Transactions.Transaction.Current.TransactionCompleted += (sender, e) => { };
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// also : https://docs.microsoft.com/en-us/dotnet/api/system.transactions.transaction.enlistvolatile
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-- end EF CORE ---------------------------------------------------------------------------------------------------------------------
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@ -1,45 +1,42 @@
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Logging/Debugging (EF CORE)
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===========================
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Once you configure logging on a DbContext instance it will be enabled on all instances of that DbContext type
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using var context = new MyContext();
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context.ConfigureLogging(s => System.Diagnostics.Debug.WriteLine(s)); // write to Visual Studio "Output" tab
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//context.ConfigureLogging(s => Console.WriteLine(s));
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see comments at top of file:
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Dinah.EntityFrameworkCore\DbContextLoggingExtensions.cs
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LocalDb
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=======
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only works if LocalDb is separately installed on host box
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SSMS db connection: (LocalDb)\MSSQLLocalDB
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eg: Server=(localdb)\mssqllocaldb;Database=DataLayer.LibationContext;Integrated Security=true;
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LocalDb database files live at:
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C:\Users\[user]\DataLayer.LibationContext.mdf
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C:\Users\[user]\DataLayer.LibationContext_log.ldf
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Migrations
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==========
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Visual Studio, EF Core
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----------------------
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Migrations, quick
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=================
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View > Other Windows > Package Manager Console
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Default project: DataLayer
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Startup project: DataLayer
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since we have mult contexts, must use -context:
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Add-Migration MyComment -context LibationContext
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Update-Database -context LibationContext
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Add-Migration MyComment -context LibationContext
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Update-Database -context LibationContext
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Startup project: reset to prev. eg: LibationLauncher
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ERROR
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=====
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Add-Migration : The term 'Add-Migration' is not recognized as the name of a cmdlet, function, script file, or operable program
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SOLUTION
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--------
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add nuget pkg: Microsoft.EntityFrameworkCore.Tools
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Migrations, detailed
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====================
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if only 1 context present, can omit -context arg:
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Add-Migration MyComment
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Update-Database
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SQLite
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======
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SQLite does not support all migrations (schema changes) due to limitations in SQLite
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delete db before running Update-Database?
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Migrations, errors
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=================
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if add-migration xyz throws and error, don't take the error msg at face value. try again with add-migration xyz -verbose
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ERROR: Add-Migration : The term 'Add-Migration' is not recognized as the name of a cmdlet, function, script file, or operable program
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SOLUTION: add nuget pkg: Microsoft.EntityFrameworkCore.Tools
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SqLite config
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=============
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relative:
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optionsBuilder.UseSqlite("Data Source=blogging.db");
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absolute (use fwd slashes):
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optionsBuilder.UseSqlite("Data Source=C:/foo/bar/blogging.db");
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Logging/Debugging (EF CORE)
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===========================
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Once you configure logging on a DbContext instance it will be enabled on all instances of that DbContext type
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using var context = new MyContext();
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context.ConfigureLogging(s => System.Diagnostics.Debug.WriteLine(s)); // write to Visual Studio "Output" tab
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//context.ConfigureLogging(s => Console.WriteLine(s));
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see comments at top of file:
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Dinah.EntityFrameworkCore\DbContextLoggingExtensions.cs
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