Autofac的DefaultConventions

Question

I am not sure if I am missing something here but can't find the answer anywhere. In structuremap I can do the following:

                x.Scan(scan =>
                {
                    scan.TheCallingAssembly();
                    scan.WithDefaultConventions();
                });

This effectively means: "if while scanning I find an interface ISampleClass, and there is a type SampleClass that implements ISampleClass, then register SampleClass as the default type for ISampleClass".

How do I do this with Autofac?

Autofac seems to provide this:

 builder.RegisterAssemblyTypes(assemblies)
        .AsImplementedInterfaces();

which registers all interfaces it finds to whatever concrete types it finds. Is there a way to get to intelligently register based on the name of the class and the interface like structuremap does?

This seems like a basic ask of any DI framework.

Answer 1

The Where method should fit your needs.

builder.RegisterAssemblyTypes(assemblies)
       .Where(t => t.Name.EndsWith("XXX"))
       .AsImplementedInterfaces();

By the way, you can also use the As method that will act as a filter in this case.

builder.RegisterAssemblyTypes(assemblies)
       .As<IFoo>();

Only types that implement IFoo will be registered.

You can find further information on assembly scanning on the documentation page