Custom getters inside builder

[stijnb1234]

I have a class like this:

public abstract class Vehicle {
  public abstract String getTypeId();
  
  public Type getType() {
    //TODO Call stuff to get the Type
  }

  public abstract Builder toBuilder();
  public static class Builder extends Vehicle_Builder {}
}

How can I get the getType() function inside the generated builder too? I won't like to define it twice.

[alicederyn]

This is not currently supported. FWIW, I don't think this is the right ownership for this behaviour. The typeId to Type conversion belongs to the Type class; Vehicle should just store a Type object, and not expose its conversion functions. It's too tightly coupled.

[stijnb1234]

Ah right, I see. And I have a List with a getter and a getter with a class parameter (generics) to get the parts with that class. Sadly I can't create getters with a parameter. How can I do that?

[alicederyn]

That's also not supported I'm afraid! I'm not sure how that would work tbh. How would the value depend on the type? Wouldn't it be the other way around? Perhaps you could paste a code snippet of how you would implement it by hand.

[stijnb1234]

That's also not supported I'm afraid! I'm not sure how that would work tbh. How would the value depend on the type? Wouldn't it be the other way around? Perhaps you could paste a code snippet of how you would implement it by hand.

abstract class Part {}

class Wheel extends Part {}
class Seat extends Part {}

And then:

class Vehicle {
  List<Part> parts;

  public <V> V getPart(@NotNull Class<V> partClass) {
        return parts.stream().filter(partClass::isInstance).map(partClass::cast).findFirst().orElse(null);
  }
}

[alicederyn]

That's very bespoke, I can't imagine this being used enough to put into a code generator. It might be a use-case for issue #14 if that ever gets implemented.