Make ArC add the no-arg constructor or raise better error message when no-arg constructor is not present

[emmanuelbernard]

@ApplicationScoped
public class BookService {

    final Validator validator;


    @Inject
    public BookService(Validator validator) {
        this.validator = validator;
    }

    public void validateBook(@Valid Book book) {
        // your business logic here
    }
}

java.lang.NoSuchMethodError: org.jboss.shamrock.example.beanvalidation.GreetingService: method <init>()V not found
    at org.jboss.shamrock.example.beanvalidation.GreetingService_ClientProxy.<init>(Unknown Source)
    at org.jboss.shamrock.example.beanvalidation.GreetingService_Bean$$function$$3.get(Unknown Source)
    at org.jboss.protean.arc.LazyValue.get(LazyValue.java:42)
    at org.jboss.shamrock.example.beanvalidation.GreetingService_Bean.get(Unknown Source)
    at org.jboss.shamrock.example.beanvalidation.GreetingService_Bean.get(Unknown Source)

We should in decreasing order of preference

1. Bytecode enhance to add the noarg constructor
2. Raise a proper error message

[mkouba]

I'd go with 2 for now but I'll investigate the bytecode enhancement. It shouldn't be a problem for simple classes but I'm not sure about the more complex ones... need to think a little ;-)