ModelBuilderExtensions Class

Definition

Namespace

Savvyio.Extensions.EFCore.Domain.EventSourcing

Assemblies

Savvyio.Extensions.EFCore.Domain.EventSourcing.dll

Source

src/Savvyio.Extensions.EFCore.Domain.EventSourcing/ModelBuilderExtensions.cs

Extension methods for the ModelBuilder class.

public static class ModelBuilderExtensions

Inheritance

object

ModelBuilderExtensions

Examples

This example shows how AddEventSourcing can be applied in OnModelCreating to register the event table for a traced aggregate.

using System;
using System.Collections.Generic;
using Microsoft.EntityFrameworkCore;
using Savvyio.Domain.EventSourcing;
using Savvyio.Extensions.EFCore;
using Savvyio.Extensions.EFCore.Domain.EventSourcing;
using Savvyio.Handlers;

namespace ExampleApp;

public sealed class EventStoreContextFactory
{
    public EventStoreContext Create()
    {
        return new EventStoreContext(new EfCoreDataSourceOptions
        {
            ContextConfigurator = builder => builder.EnableDetailedErrors()
        });
    }
}

public sealed class EventStoreContext : EfCoreDbContext
{
    public EventStoreContext(EfCoreDataSourceOptions options) : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        modelBuilder.AddEventSourcing<OrderTimeline, Guid>(options => options.TableName = "OrderTimelineEvents");
    }
}

public sealed class OrderTimeline : TracedAggregateRoot<Guid>
{
    public OrderTimeline(Guid id, string orderNumber) : base()
    {
        AddEvent(new OrderPlaced(id, orderNumber));
    }

    private OrderTimeline(Guid id, IEnumerable<ITracedDomainEvent> events) : base(id, events)
    {
    }

    protected override void RegisterDelegates(IFireForgetRegistry<ITracedDomainEvent> handler)
    {
        handler.Register<OrderPlaced>(_ => { });
    }
}

public sealed record OrderPlaced(Guid OrderId, string OrderNumber) : TracedDomainEvent;

Methods

Name	Description
AddEventSourcing<TEntity, TKey>(ModelBuilder, Action<EfCoreTracedAggregateEntityOptions>)	Adds a default implementation of an EF Core compatible Event Sourcing model.