74 lines
3.1 KiB
C#
74 lines
3.1 KiB
C#
using MediatR;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.BuyerAggregate;
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using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
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using Microsoft.eShopOnContainers.Services.Ordering.Domain.Seedwork;
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using Ordering.Infrastructure;
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using Ordering.Infrastructure.EntityConfigurations;
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
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{
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public class OrderingContext
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: DbContext,IUnitOfWork
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{
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public const string DEFAULT_SCHEMA = "ordering";
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public DbSet<Order> Orders { get; set; }
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public DbSet<OrderItem> OrderItems { get; set; }
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public DbSet<PaymentMethod> Payments { get; set; }
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public DbSet<Buyer> Buyers { get; set; }
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public DbSet<CardType> CardTypes { get; set; }
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public DbSet<OrderStatus> OrderStatus { get; set; }
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private readonly IMediator _mediator;
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private OrderingContext(DbContextOptions<OrderingContext> options) : base (options) { }
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public OrderingContext(DbContextOptions<OrderingContext> options, IMediator mediator) : base(options)
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{
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_mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
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System.Diagnostics.Debug.WriteLine("OrderingContext::ctor ->" + this.GetHashCode());
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}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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modelBuilder.ApplyConfiguration(new ClientRequestEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new PaymentMethodEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new OrderEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new OrderItemEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new CardTypeEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new OrderStatusEntityTypeConfiguration());
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modelBuilder.ApplyConfiguration(new BuyerEntityTypeConfiguration());
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}
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public async Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default(CancellationToken))
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{
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// Dispatch Domain Events collection.
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// Choices:
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// A) Right BEFORE committing data (EF SaveChanges) into the DB will make a single transaction including
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// side effects from the domain event handlers which are using the same DbContext with "InstancePerLifetimeScope" or "scoped" lifetime
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// B) Right AFTER committing data (EF SaveChanges) into the DB will make multiple transactions.
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// You will need to handle eventual consistency and compensatory actions in case of failures in any of the Handlers.
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await _mediator.DispatchDomainEventsAsync(this);
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// After executing this line all the changes (from the Command Handler and Domain Event Handlers)
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// performed throught the DbContext will be commited
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var result = await base.SaveChangesAsync();
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return true;
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}
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}
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}
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