i created my own dbcontextfactory and now i don't know how to correctly register it in di. Can you somebody help me please? IApplicationDbContext is just interfaces with db sets. I have register ma DbContext as pooled db context factory

builder.Services.AddPooledDbContextFactory<MyContext>(options =>
{
    ....
});

Interface of my db factory

interface IApplicationDbContextFactory
{
    IApplicationDbContext CreateDbContext();
}

Implementation db factory

public class MyContextFactory<TContext> : IApplicationDbContextFactory where TContext : DbContext, IApplicationDbContext
{
    private readonly IDbContextFactory<TContext> _dbContextFactory;

    public MyContextFactory(IDbContextFactory<TContext> dbContextFactory)
    {
        _dbContextFactory = dbContextFactory;
    }

    public IApplicationDbContext CreateDbContext()
    {
        return _dbContextFactory.CreateDbContext();
    }
}

How can i correctly register my factory to di? Thank you

CodePudding user response：

Lifetime for the factory registered by AddPooledDbContextFactory is Singleton. Just register it with builder.Services.AddSingleton<IApplicationDbContextFactory, MyContextFactory<MyContext>>(); (though Scoped and Transient should also work just as fine):

var serviceCollection = new ServiceCollection();
serviceCollection.AddPooledDbContextFactory<SomeContext>(builder => builder.UseSqlite($"Filename={nameof(SomeContext)}.db"));
serviceCollection.AddSingleton<IApplicationDbContextFactory, MyContextFactory<SomeContext>>();
var serviceProvider = serviceCollection.BuildServiceProvider();
var dbContextFactory = serviceProvider.GetRequiredService<IDbContextFactory<SomeContext>>();

using (var scope = serviceProvider.CreateScope())
{
    var applicationDbContextFactory = serviceProvider.GetRequiredService<IApplicationDbContextFactory>();
    var applicationDbContext = applicationDbContextFactory.CreateDbContext();
}

public class SomeContext : DbContext, IApplicationDbContext
{
    public SomeContext(DbContextOptions<SomeContext> options) : base(options)
    {
    }

    public DbSet<MyEntity> Entities { get; set; }
}

interface IApplicationDbContextFactory
{
    IApplicationDbContext CreateDbContext();
}

public interface IApplicationDbContext
{
}

public class MyContextFactory<TContext> : IApplicationDbContextFactory where TContext : DbContext, IApplicationDbContext
{
    private readonly IDbContextFactory<TContext> _dbContextFactory;

    public MyContextFactory(IDbContextFactory<TContext> dbContextFactory)
    {
        _dbContextFactory = dbContextFactory;
    }

    public IApplicationDbContext CreateDbContext()
    {
        return _dbContextFactory.CreateDbContext();
    }
}