@Builder and inheritance

[flexguse]

Hi,

I had my first day with Lombok and I really liked it ;) Just found the @Builder annotation and I'm quite exited.

But unfortunately in my this extremely useful feature does not work properly. I have an abstract class (AbstractEntities) which is the parent of all my entities. In AbstractEntity there is an required attribute "myRequiredAttribute". If I now put the @Builder annotation to my entities the Builder has no method the set "myRequiredAttribute".

To you see any chance to let @Builder not only inspect the current entity but also the parent entities? Or maybe the inspection is done until @MappedSuperclass is found?

Regards,

Christoph

[Martin Grajcar]

IIUYC, this is not a problem of the Builder, it's a problem of the generated constructor. Builder works with any static method or constructor and placing @Builder on the class is just a shortcut generating the @AllArgsConstructor. The Builder then handles all the arguments.

But the constructor doesn't account for the superclass and this is hard to solve.

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[flexguse]

Hi Maaartin,

thanks for your reply.

If there is no quick solution available, I have to use something different to create my Builders ;)

Regards,
Christoph

[Vyacheslav Blinov]

Hi,

As a workaround for the issue with @Builder + @AllArgsContstructor on subclass, you can create your own constructor with all the parameters you need and annotate it with @Builder.

Regards,
Vyacheslav

[Martin Grajcar]

Yes, that's what I've meant (but forgot to say explicitly). It still saves most of the boilerplate.

[flexguse]

Hi Maaartin, hi Vyacheslav,

thanks for your suggestions, I tried them out.

I think in my case it is better to use for the builders something else than Lombok and not to have to cope with own constructors.

Regards,
Christoph

[Arnaud Deprez]

Hi guys !

There are still a lot of +1 for this issue about @Builder annotation and inheritance here : https://github.com/peichhorn/lombok-pg/issues/78#issuecomment-69006068

There are also some propositions.

I thinks it can be a good idea to investigate on it.

Rgds