79 lines
3.1 KiB
C#
79 lines
3.1 KiB
C#
using Microsoft.EntityFrameworkCore;
|
|
using Microsoft.EntityFrameworkCore.Metadata.Builders;
|
|
using System;
|
|
|
|
namespace DataLayer.Configurations
|
|
{
|
|
internal class BookConfig : IEntityTypeConfiguration<Book>
|
|
{
|
|
public void Configure(EntityTypeBuilder<Book> entity)
|
|
{
|
|
entity.HasKey(b => b.BookId);
|
|
entity.HasIndex(b => b.AudibleProductId);
|
|
|
|
entity.OwnsOne(b => b.Rating);
|
|
|
|
entity.Property(nameof(Book._audioFormat));
|
|
//
|
|
// CRUCIAL: ignore unmapped collections, even get-only
|
|
//
|
|
entity.Ignore(nameof(Book.Authors));
|
|
entity.Ignore(nameof(Book.Narrators));
|
|
entity.Ignore(nameof(Book.AudioFormat));
|
|
//// these don't seem to matter
|
|
//entity.Ignore(nameof(Book.AuthorNames));
|
|
//entity.Ignore(nameof(Book.NarratorNames));
|
|
//entity.Ignore(nameof(Book.HasPdfs));
|
|
|
|
// OwnsMany: "Can only ever appear on navigation properties of other entity types.
|
|
// Are automatically loaded, and can only be tracked by a DbContext alongside their owner."
|
|
entity
|
|
.OwnsMany(b => b.Supplements, b_s =>
|
|
{
|
|
b_s.WithOwner(s => s.Book)
|
|
.HasForeignKey(s => s.BookId);
|
|
b_s.HasKey(s => s.SupplementId);
|
|
});
|
|
// even though it's owned, we need to map its backing field
|
|
entity
|
|
.Metadata
|
|
.FindNavigation(nameof(Book.Supplements))
|
|
.SetPropertyAccessMode(PropertyAccessMode.Field);
|
|
|
|
// owns it 1:1, store in separate table
|
|
entity
|
|
.OwnsOne(b => b.UserDefinedItem, b_udi =>
|
|
{
|
|
b_udi.WithOwner(udi => udi.Book)
|
|
.HasForeignKey(udi => udi.BookId);
|
|
b_udi.Property(udi => udi.BookId).ValueGeneratedNever();
|
|
b_udi.ToTable(nameof(Book.UserDefinedItem));
|
|
|
|
b_udi.Property(udi => udi.LastDownloaded);
|
|
b_udi
|
|
.Property(udi => udi.LastDownloadedVersion)
|
|
.HasConversion(ver => ver.ToString(), str => Version.Parse(str));
|
|
|
|
// owns it 1:1, store in same table
|
|
b_udi.OwnsOne(udi => udi.Rating);
|
|
});
|
|
|
|
entity
|
|
.Metadata
|
|
.FindNavigation(nameof(Book.ContributorsLink))
|
|
// PropertyAccessMode.Field : Contributions is a get-only property, not a field, so use its backing field
|
|
.SetPropertyAccessMode(PropertyAccessMode.Field);
|
|
|
|
entity
|
|
.Metadata
|
|
.FindNavigation(nameof(Book.SeriesLink))
|
|
// PropertyAccessMode.Field : Series is a get-only property, not a field, so use its backing field
|
|
.SetPropertyAccessMode(PropertyAccessMode.Field);
|
|
|
|
entity
|
|
.HasOne(b => b.Category)
|
|
.WithMany()
|
|
.HasForeignKey(b => b.CategoryId);
|
|
}
|
|
}
|
|
} |