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Better ToString for DataLayer objects

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This commit is contained in:
Robert McRackan 2019-11-19 09:54:42 -05:00
parent f3128b562d
commit 80b0ef600d
17 changed files with 133 additions and 210 deletions
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DataLayer/LibationContext.db Normal file
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98
DataLayer/Migrations/20191115193402_Fresh.Designer.cs → DataLayer/Migrations/20191119144803_Fresh.Designer.cs generated
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@ -3,54 +3,50 @@ using System;
using DataLayer;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Metadata;
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
namespace DataLayer.Migrations
{
[DbContext(typeof(LibationContext))]
[Migration("20191115193402_Fresh")]
[Migration("20191119144803_Fresh")]
partial class Fresh
{
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "3.0.0")
.HasAnnotation("Relational:MaxIdentifierLength", 128)
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasAnnotation("ProductVersion", "3.0.0");
modelBuilder.Entity("DataLayer.Book", b =>
{
b.Property<int>("BookId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleProductId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<int>("CategoryId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<DateTime?>("DatePublished")
.HasColumnType("datetime2");
.HasColumnType("TEXT");
b.Property<string>("Description")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<bool>("IsAbridged")
.HasColumnType("bit");
.HasColumnType("INTEGER");
b.Property<int>("LengthInMinutes")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<string>("PictureId")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<string>("Title")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.HasKey("BookId");
@ -64,16 +60,16 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.BookContributor", b =>
{
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("ContributorId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("Role")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<byte>("Order")
.HasColumnType("tinyint");
.HasColumnType("INTEGER");
b.HasKey("BookId", "ContributorId", "Role");
@ -88,17 +84,16 @@ namespace DataLayer.Migrations
{
b.Property<int>("CategoryId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleCategoryId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<int?>("ParentCategoryCategoryId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.HasKey("CategoryId");
@ -121,14 +116,13 @@ namespace DataLayer.Migrations
{
b.Property<int>("ContributorId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleAuthorId")
.HasColumnType("nvarchar(max)");
b.Property<string>("AudibleContributorId")
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.HasKey("ContributorId");
@ -140,10 +134,10 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.LibraryBook", b =>
{
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<DateTime>("DateAdded")
.HasColumnType("datetime2");
.HasColumnType("TEXT");
b.HasKey("BookId");
@ -154,14 +148,13 @@ namespace DataLayer.Migrations
{
b.Property<int>("SeriesId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleSeriesId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.HasKey("SeriesId");
@ -173,13 +166,13 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.SeriesBook", b =>
{
b.Property<int>("SeriesId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<float?>("Index")
.HasColumnType("real");
.HasColumnType("REAL");
b.HasKey("SeriesId", "BookId");
@ -201,18 +194,16 @@ namespace DataLayer.Migrations
b.OwnsOne("DataLayer.Rating", "Rating", b1 =>
{
b1.Property<int>("BookId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b1.Property<float>("OverallRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.Property<float>("PerformanceRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.Property<float>("StoryRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.HasKey("BookId");
@ -226,14 +217,13 @@ namespace DataLayer.Migrations
{
b1.Property<int>("SupplementId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b1.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b1.Property<string>("Url")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b1.HasKey("SupplementId");
@ -248,10 +238,10 @@ namespace DataLayer.Migrations
b.OwnsOne("DataLayer.UserDefinedItem", "UserDefinedItem", b1 =>
{
b1.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b1.Property<string>("Tags")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b1.HasKey("BookId");
@ -263,16 +253,16 @@ namespace DataLayer.Migrations
b1.OwnsOne("DataLayer.Rating", "Rating", b2 =>
{
b2.Property<int>("UserDefinedItemBookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b2.Property<float>("OverallRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.Property<float>("PerformanceRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.Property<float>("StoryRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.HasKey("UserDefinedItemBookId");

12
DataLayer/Migrations/20191115193402_Fresh.cs → DataLayer/Migrations/20191119144803_Fresh.cs
View File

@ -12,7 +12,7 @@ namespace DataLayer.Migrations
columns: table => new
{
CategoryId = table.Column<int>(nullable: false)
.Annotation("SqlServer:Identity", "1, 1"),
.Annotation("Sqlite:Autoincrement", true),
AudibleCategoryId = table.Column<string>(nullable: true),
Name = table.Column<string>(nullable: true),
ParentCategoryCategoryId = table.Column<int>(nullable: true)
@ -33,9 +33,9 @@ namespace DataLayer.Migrations
columns: table => new
{
ContributorId = table.Column<int>(nullable: false)
.Annotation("SqlServer:Identity", "1, 1"),
.Annotation("Sqlite:Autoincrement", true),
Name = table.Column<string>(nullable: true),
AudibleAuthorId = table.Column<string>(nullable: true)
AudibleContributorId = table.Column<string>(nullable: true)
},
constraints: table =>
{
@ -47,7 +47,7 @@ namespace DataLayer.Migrations
columns: table => new
{
SeriesId = table.Column<int>(nullable: false)
.Annotation("SqlServer:Identity", "1, 1"),
.Annotation("Sqlite:Autoincrement", true),
AudibleSeriesId = table.Column<string>(nullable: true),
Name = table.Column<string>(nullable: true)
},
@ -61,7 +61,7 @@ namespace DataLayer.Migrations
columns: table => new
{
BookId = table.Column<int>(nullable: false)
.Annotation("SqlServer:Identity", "1, 1"),
.Annotation("Sqlite:Autoincrement", true),
AudibleProductId = table.Column<string>(nullable: true),
Title = table.Column<string>(nullable: true),
Description = table.Column<string>(nullable: true),
@ -159,7 +159,7 @@ namespace DataLayer.Migrations
columns: table => new
{
SupplementId = table.Column<int>(nullable: false)
.Annotation("SqlServer:Identity", "1, 1"),
.Annotation("Sqlite:Autoincrement", true),
BookId = table.Column<int>(nullable: false),
Url = table.Column<string>(nullable: true)
},

96
DataLayer/Migrations/LibationContextModelSnapshot.cs
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@ -3,7 +3,6 @@ using System;
using DataLayer;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Metadata;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
namespace DataLayer.Migrations
@ -15,40 +14,37 @@ namespace DataLayer.Migrations
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "3.0.0")
.HasAnnotation("Relational:MaxIdentifierLength", 128)
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasAnnotation("ProductVersion", "3.0.0");
modelBuilder.Entity("DataLayer.Book", b =>
{
b.Property<int>("BookId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleProductId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<int>("CategoryId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<DateTime?>("DatePublished")
.HasColumnType("datetime2");
.HasColumnType("TEXT");
b.Property<string>("Description")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<bool>("IsAbridged")
.HasColumnType("bit");
.HasColumnType("INTEGER");
b.Property<int>("LengthInMinutes")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<string>("PictureId")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<string>("Title")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.HasKey("BookId");
@ -62,16 +58,16 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.BookContributor", b =>
{
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("ContributorId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("Role")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<byte>("Order")
.HasColumnType("tinyint");
.HasColumnType("INTEGER");
b.HasKey("BookId", "ContributorId", "Role");
@ -86,17 +82,16 @@ namespace DataLayer.Migrations
{
b.Property<int>("CategoryId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleCategoryId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.Property<int?>("ParentCategoryCategoryId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.HasKey("CategoryId");
@ -119,14 +114,13 @@ namespace DataLayer.Migrations
{
b.Property<int>("ContributorId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleAuthorId")
.HasColumnType("nvarchar(max)");
b.Property<string>("AudibleContributorId")
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.HasKey("ContributorId");
@ -138,10 +132,10 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.LibraryBook", b =>
{
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<DateTime>("DateAdded")
.HasColumnType("datetime2");
.HasColumnType("TEXT");
b.HasKey("BookId");
@ -152,14 +146,13 @@ namespace DataLayer.Migrations
{
b.Property<int>("SeriesId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b.Property<string>("AudibleSeriesId")
.HasColumnType("nvarchar(450)");
.HasColumnType("TEXT");
b.Property<string>("Name")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b.HasKey("SeriesId");
@ -171,13 +164,13 @@ namespace DataLayer.Migrations
modelBuilder.Entity("DataLayer.SeriesBook", b =>
{
b.Property<int>("SeriesId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b.Property<float?>("Index")
.HasColumnType("real");
.HasColumnType("REAL");
b.HasKey("SeriesId", "BookId");
@ -199,18 +192,16 @@ namespace DataLayer.Migrations
b.OwnsOne("DataLayer.Rating", "Rating", b1 =>
{
b1.Property<int>("BookId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b1.Property<float>("OverallRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.Property<float>("PerformanceRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.Property<float>("StoryRating")
.HasColumnType("real");
.HasColumnType("REAL");
b1.HasKey("BookId");
@ -224,14 +215,13 @@ namespace DataLayer.Migrations
{
b1.Property<int>("SupplementId")
.ValueGeneratedOnAdd()
.HasColumnType("int")
.HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
.HasColumnType("INTEGER");
b1.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b1.Property<string>("Url")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b1.HasKey("SupplementId");
@ -246,10 +236,10 @@ namespace DataLayer.Migrations
b.OwnsOne("DataLayer.UserDefinedItem", "UserDefinedItem", b1 =>
{
b1.Property<int>("BookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b1.Property<string>("Tags")
.HasColumnType("nvarchar(max)");
.HasColumnType("TEXT");
b1.HasKey("BookId");
@ -261,16 +251,16 @@ namespace DataLayer.Migrations
b1.OwnsOne("DataLayer.Rating", "Rating", b2 =>
{
b2.Property<int>("UserDefinedItemBookId")
.HasColumnType("int");
.HasColumnType("INTEGER");
b2.Property<float>("OverallRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.Property<float>("PerformanceRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.Property<float>("StoryRating")
.HasColumnType("real");
.HasColumnType("REAL");
b2.HasKey("UserDefinedItemBookId");

2
DataLayer/UNTESTED/EfClasses/Book.cs
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@ -246,5 +246,7 @@ namespace DataLayer
context.Entry(this).Reference(s => s.Category).Load();
Category = category;
}
public override string ToString() => $"[{AudibleProductId}] {Title}";
}
}

2
DataLayer/UNTESTED/EfClasses/BookContributor.cs
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@ -23,5 +23,7 @@ namespace DataLayer
Role = role;
Order = order;
}
public override string ToString() => $"{Book} {Contributor} {Role} {Order}";
}
}

2
DataLayer/UNTESTED/EfClasses/Category.cs
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@ -48,5 +48,7 @@ namespace DataLayer
if (parentCategory != null)
ParentCategory = parentCategory;
}
public override string ToString() => $"[{AudibleCategoryId}] {Name}";
}
}

46
DataLayer/UNTESTED/EfClasses/Contributor.cs
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@ -25,6 +25,8 @@ namespace DataLayer
private HashSet<BookContributor> _booksLink;
public IEnumerable<BookContributor> BooksLink => _booksLink?.ToList();
public string AudibleContributorId { get; private set; }
private Contributor() { }
public Contributor(string name)
{
@ -34,49 +36,13 @@ namespace DataLayer
Name = name;
}
public string AudibleAuthorId { get; private set; }
public void UpdateAudibleAuthorId(string authorId)
public Contributor(string name, string audibleContributorId) : this(name)
{
// don't overwrite with null or whitespace but not an error
if (!string.IsNullOrWhiteSpace(authorId))
AudibleAuthorId = authorId;
if (!string.IsNullOrWhiteSpace(audibleContributorId))
AudibleContributorId = audibleContributorId;
}
#region // AudibleAuthorId refactor: separate author-specific info. overkill for a single optional string
///// <summary>Most authors in Audible have a unique id</summary>
//public AudibleAuthorProperty AudibleAuthorProperty { get; private set; }
//public void UpdateAuthorId(string authorId, LibationContext context = null)
//{
// if (authorId == null)
// return;
// if (AudibleAuthorProperty != null)
// {
// AudibleAuthorProperty.UpdateAudibleAuthorId(authorId);
// return;
// }
// if (context == null)
// throw new ArgumentNullException(nameof(context), "You must provide a context");
// if (context.Contributors.Find(ContributorId) == null)
// throw new InvalidOperationException("Could not update audible author id.");
// var audibleAuthorProperty = new AudibleAuthorProperty();
// audibleAuthorProperty.UpdateAudibleAuthorId(authorId);
// context.AuthorProperties.Add(audibleAuthorProperty);
//}
//public class AudibleAuthorProperty
//{
// public int ContributorId { get; private set; }
// public Contributor Contributor { get; set; }
// public string AudibleAuthorId { get; private set; }
// public void UpdateAudibleAuthorId(string authorId)
// {
// if (!string.IsNullOrWhiteSpace(authorId))
// AudibleAuthorId = authorId;
// }
//}
//// ...and create EF table config
#endregion
public override string ToString() => Name;
}
}

2
DataLayer/UNTESTED/EfClasses/LibraryBook.cs
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@ -17,5 +17,7 @@ namespace DataLayer
Book = book;
DateAdded = dateAdded;
}
public override string ToString() => $"{DateAdded:d} {Book}";
}
}

2
DataLayer/UNTESTED/EfClasses/Rating.cs
View File

@ -72,5 +72,7 @@ namespace DataLayer
return string.Join("\r\n", items);
}
public override string ToString() => $"Overall={OverallRating} Perf={PerformanceRating} Story={StoryRating}";
}
}

2
DataLayer/UNTESTED/EfClasses/Series.cs
View File

@ -66,5 +66,7 @@ namespace DataLayer
if (_booksLink.SingleOrDefault(sb => sb.Book == book) == null)
_booksLink.Add(new SeriesBook(this, book, index));
}
public override string ToString() => Name;
}
}

2
DataLayer/UNTESTED/EfClasses/SeriesBook.cs
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@ -34,5 +34,7 @@ namespace DataLayer
if (index.HasValue)
Index = index.Value;
}
public override string ToString() => $"Series={Series} Book={Book}";
}
}

2
DataLayer/UNTESTED/EfClasses/Supplement.cs
View File

@ -20,5 +20,7 @@ namespace DataLayer
Book = book;
Url = url;
}
public override string ToString() => $"{Book} {Url.Substring(Url.Length - 4)}";
}
}

2
DataLayer/UNTESTED/EfClasses/UserDefinedItem.cs
View File

@ -78,5 +78,7 @@ namespace DataLayer
public void UpdateRating(float overallRating, float performanceRating, float storyRating)
=> Rating.Update(overallRating, performanceRating, storyRating);
public override string ToString() => $"{Book} {Rating} {Tags}";
}
}

4
DtoImporterService/ContributorImporter.cs
View File

@ -67,11 +67,9 @@ namespace DtoImporterService
var person = context.Contributors.Local.SingleOrDefault(c => c.Name == p.Name);
if (person == null)
{
person = context.Contributors.Add(new Contributor(p.Name)).Entity;
person = context.Contributors.Add(new Contributor(p.Name, p.Asin)).Entity;
qtyNew++;
}
person.UpdateAudibleAuthorId(p.Asin);
}
return qtyNew;

2
LibationWinForm/UNTESTED/ProductsGrid.cs
View File

@ -32,7 +32,7 @@ namespace LibationWinForm
public ProductsGrid()
{
InitializeComponent();
Disposed += (_, __) => { if (context != null) context.Dispose(); };
Disposed += (_, __) => context?.Dispose();
}
private bool hasBeenDisplayed = false;

41
REFERENCE.txt
View File

@ -1,6 +1,7 @@
-- begin VERSIONING ---------------------------------------------------------------------------------------------------------------------
https://github.com/rmcrackan/Libation/releases
v3.1-beta.2 : fixed known performance issue: Tag add/edit
v3.1-beta.1 : RELEASE TO BETA
v3.0.3 : Switch to SQLite. No longer relies on LocalDB, which must be installed separately
v3.0.2 : Final using LocalDB
@ -38,19 +39,6 @@ alternate book id (eg BK_RAND_006061) is called 'sku' , 'sku_lite' , 'prod_id' ,
-- end AUDIBLE DETAILS ---------------------------------------------------------------------------------------------------------------------
-- begin SOLUTION LAYOUT ---------------------------------------------------------------------------------------------------------------------
core libraries
extend Standard Libraries
additional simple libraries for general purpose programming
utils: domain ignorant
domain: biz logic
db ignorant
db, domain objects
domain internal utilities: domain aware. db ignorant
domain utilities: domain aware. db aware
incl non-db persistence. unless it needs to be tied into a db intercepter
all user-provided data must be backed up to json
application
do NOT combine jsons for
- audible-scraped persistence: library, book details
- libation-generated persistence: FilePaths.json
@ -74,31 +62,4 @@ aggregate root is transactional boundary
// // test with and without : using TransactionScope scope = new TransactionScope();
//System.Transactions.Transaction.Current.TransactionCompleted += (sender, e) => { };
// also : https://docs.microsoft.com/en-us/dotnet/api/system.transactions.transaction.enlistvolatile
pattern when using 1 db context per form
public Ctor()
{
InitializeComponent();
// dispose context here only. DO NOT dispose in OnParentChanged(). parent form will call dispose after this one has been switched.
// disposing context prematurely can result in:
// The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.
this.Disposed += (_, __) => context?.Dispose();
}
-- end EF CORE ---------------------------------------------------------------------------------------------------------------------
-- begin ASYNC/AWAIT ---------------------------------------------------------------------------------------------------------------------
Using Async and Await to update the UI Thread – Stephen Haunts { Coding in the Trenches }
https://stephenhaunts.com/2014/10/14/using-async-and-await-to-update-the-ui-thread/
Using Async and Await to update the UI Thread Part 2 – Stephen Haunts { Coding in the Trenches }
https://stephenhaunts.com/2014/10/16/using-async-and-await-to-update-the-ui-thread-part-2/
Simple Async Await Example for Asynchronous Programming – Stephen Haunts { Coding in the Trenches }
https://stephenhaunts.com/2014/10/10/simple-async-await-example-for-asynchronous-programming/
Async and Await -- Stephen Cleary's famous intro
https://blog.stephencleary.com/2012/02/async-and-await.html
Async-Await - Best Practices in Asynchronous Programming -- Stephen Cleary
https://msdn.microsoft.com/en-us/magazine/jj991977.aspx
-- end ASYNC/AWAIT ---------------------------------------------------------------------------------------------------------------------