Is it possible to add qualifiers in @RequiredArgsConstructor(onConstructor = @__(@Autowired))?

Question

If I wanted to use the annotation @Qualifier on a constructor dependency injection, I would have something like the following:

public class Example {      private final ComponentExample component;      @Autowired     public Example(@Qualifier("someComponent") ComponentExample component) {         this.component = component;     } } 

I know Lombok's annotations to reduce boilerplate code and don't have to include a constructor would be as follows: @RequiredArgsConstructors(onConstructor=@__(@Inject)) but this only works with properties without qualifiers.

Anyone know if it is possible to add qualifiers in @RequiredArgsConstructor(onConstructor = @__(@Autowired))?

Answer 1

EDIT:

It is FINALLY POSSIBLE to do so! You can have a service defined like this:

@Service @RequiredArgsConstructor public class SomeRouterService {     @NonNull private final DispatcherService dispatcherService;    @Qualifier("someDestination1") @NonNull private final SomeDestination someDestination1;    @Qualifier("someDestination2") @NonNull private final SomeDestination someDestination2;     public void onMessage(Message message) {        //..some code to route stuff based on something to either destination1 or destination2    }   }  

Provided that you have a lombok.config file like this in the root of the project:

# Copy the Qualifier annotation from the instance variables to the constructor # see https://github.com/rzwitserloot/lombok/issues/745 lombok.copyableAnnotations += org.springframework.beans.factory.annotation.Qualifier 

This was recently introduced in latest lombok 1.18.4, I wrote about it in my blogpost, and I am proud to say I was one of the main driving forces pushing for the implementation of the feature.

• The blog post where the issue is discussed in detail
• The original issue on github
• And a small github project to see it in action

Answer 2

You may use spring trick to qualify field by naming it with desired qualifier without @Qualifier annotation.

@RequiredArgsConstructor public class ValidationController {    //@Qualifier("xmlFormValidator")     private final Validator xmlFormValidator;