Resolution of single instances based on concrete and abstract types about hypodermic HOT 3 CLOSED

I’m using a fairly substantial modification of Hypodermic (for supporting Unreal Engine types) and I added a block for such resolutions. Basically anything registered with an alias will refuse to resolve the actual type unless asSelf() has also been used.

The rewrite makes it a bit tricky to supply a patch but it basically tracks any aliased types and rejects them in resolveIfCanBeRegistered, which is where the concrete type otherwise would be doubly registered.

I’m currently on vacation but I can supply more details in August.

from hypodermic.

@badiozam hey, as @judgeaxl stated, you can use asSelf() on a registration to tell Hypodermic that you want your concrete type to be resolvable as well. So if I use your sample it goes like this:

Hypodermic::ContainerBuilder builder;

builder.registerType< ConcreteClass >().as< InterfaceClass >().asSelf().singleInstance();
...
auto container = builder.build();
...
auto singleton_interface_ref = container->resolve< InterfaceClass >();
auto singleton_concrete_ref = container->resolve< ConcreteClass >();

assert(singleton_interface_ref == singleton_concrete_ref); // Will pass

You can have a look at the wiki to discover more features.

Cheers

from hypodermic.

@badiozam I am closing this issue. Feel free to keep asking for help.

from hypodermic.