[Question] GetItAll from one type?

[rafaelcorbellini-egsys]

Is there any way to get everyone of a kind?

example when logging out of the application I want to get all objects registered as DAO and perform a function of them.

[escamoteur]

You mean you registered multiple instances of the same type? and you want to call the same method on all of them?

[rafaelcorbellini-egsys]

I want get all instance of one type.

Example i have N InterfaceDAO (UserDao, TodoDAO... ) and register all of them.

have some way to resolve all (Iterable) registered ?

[escamoteur]

ah, understood. I will think about it.

[mareklat]

@escamoteur Have you analyzed this topic? Are there any real chances to implement this?

[escamoteur]

Could you elaborated why this would be useful?

[mareklat]

Of course. Most of all, it helps to write modular and clean code.

For example:
I have an Interceptor interface in my http client. In the object responsible for communication with the server, I inject a list of objects implementing the Interceptor interface. Then, when I want to add a new Interceptor, just only create a new implementation.

A similar solution is present in other DI libraries, e.g. Dagger, Spring Boot, etc.

[escamoteur]

One question would be should it only get all of exact the same type or also derived types?

[mareklat]

I think they should it only get all of exact the same type. We can use type passed when there are registering factory, for example

getit.factory<Interceptor>(() => LoggingInterceptor());

Currently, when I register more than one object with the same type and when allowReassignment==false , the library throws an exception. Instead, we could register a collection of interfaces

getit.factory<List<Interceptor>>(() => [
   get<LoggingInterceptor>(),
   get<AnotherInterceptor>(),
   ...
]);

Maybe new flag will be necessary to allow binding into collection.

[escamoteur]

ok, makes sense, but I need to find time for it. Still not finished to convert all my pacakges to null safety

[mareklat]

Fantastic :) I haven't explored the get_it internal yet, but in my free time I'll try to help

[mareklat]

@escamoteur Hey, have you found the time to focus on this idea? Can we reopen this topic? I believe that this is a crucial and much needed feature