How to register beans by annotation members programatically

[subash89]

I have a class and need to inject multiple objects of it based on a custom annotation, say @myjob. I can I achieve something like following ? Appreciate any help around this. Most AOP examples I see in docs is with method interceptor. Not like a field level as follows.

@Service
public class ServiceX {

  @MyJob("key1")
  MYJobImpl obj1;
  
  @MyJob("key2")
  MYJobImpl obj2;
}

public class MyJobImpl{
  String name;
  public MyJobImpl(String name){
   this.name=name
 }
}

[shingjo]

Something like 5.2 Introduction Advice?

[subash89]

It's an example of interface where this Stub AOP will provide implementation for getNumber() method in an implementation for StubExample interface. Not a field.
Basically I am trying to inject different objects based on an annotation and its members.

[shingjo]

You can use a Factory to create your beans.

public class MyJobImpl{
    String name;
    public MyJobImpl(String name){
        this.name=name;
    }
}

@Factory
public class MyJobFactory {

    @Prototype
    public MyJobImpl createJob(InjectionPoint<?> injectionPoint) {
        Optional<String> type = injectionPoint.getAnnotationMetadata().stringValue(MyJob.class);

        if(type.isPresent()) {
            return new MyJobImpl(type.get());
        } else {
            return null;
        }
    }
}

public class ServiceX {
    @Inject
    @MyJob("key1")
    MyJobImpl obj1;

    @Inject
    @MyJob("key2")
    MyJobImpl obj2;
}

[subash89]

This looks promising. Let me try this.

[subash89]

@shingjo That worked perfectly well. Thanks a lot.

[subash89]

@shingjo
One quick last question on this for a different use case. Any chance we can use same Factory way to @nAmed bind different objects instead of custom binding.
Currently how I do is manually create the objects at startup and ctx.registerSingleton(MyJobImpl.class, myjob1, Qualifiers.byName("myjob1"));

I tried to follow same model you suggested above, assuming @nAmed vs @myjob are pretty much same, some annotation, so it should behave same. But when @nAmed is present, the Factory method(wtih injectionPoint) not getting invoked.