Lombok with default-constructor

Question

I have a class like this:

@Service("aSpringService")
@RequiredArgsConstructor(onConstructor = @__({@Autowired}))
public class ServiceImpl implements Service {
    @NonNull
    private final Member1 m1;

    @NonNull
    private final Member2 m2;

    @NonNull
    private final Member3 m3;

}

The constructor will be created by Lombok and at runtime, spring will inject the members into the constructor. Now I need a setup-method and got stuck with lombok. It seems, that Lombok cannot call something self-written.

What I want

I want a new parameter for the Lombok-Annotation like useDefaultConstructor. When this parameter is present, then the automated-code (from Lombok) will call a parameter-less constructor, which I can write for my own.

@RequiredArgsConstructor(onConstructor = @__({@Autowired}), useDefaultConstructor = true)
// Note the "useDefaultConstructor = true" 
public class ServiceImpl implements Service {
    @NonNull
    private final Member1 m1; 

    private ServiceImpl() {
        //some self-written setup-code
    }
}

Generated class:

public class ServiceImpl implements Service {
    private final Member1 m1;

    // This constructor is not generated by lombok
    private ServiceImpl() {
        //some self-written setup-code
    }

    // Constructor generated by lombok
    @Autowired
    public ServiceImpl(Member1 m1) {
       this(); // <- only created when "useDefaultConstructor" is present
       this.m1 = m1;
    }
}

The question

Is there a way to do this with lombok? Iam to lazy to write the constructor for my own (and change it everytime, when a need a new spring-member).

frenchu · Accepted Answer · 2018-06-05 09:51:05Z

5

Have you tried Spring @PostConstruct annotation?

@PostConstruct
public void init() {
    // setup-code
}

It is a part of Spring's beans lifecycle management.

edited Jun 5, 2018 at 9:51

answered Jun 5, 2018 at 8:34

frenchu

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2 Comments

akop Over a year ago

Thats exactly what I want to do.

frenchu Over a year ago

You can find more about Beans Lifecycle in this chapter of Spring Documentation

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