Can't use as Composite<IronList>

[Legioth]

@heruan commented on Tue May 29 2018

Using the component as generic type of Composite results in this exception:

java.lang.IllegalStateException: Neither class 'MyList' nor its super classes declare
event handler method 'setRequestedRange'

Use case:

abstract ListLayout<T, L extends Component & HasDataProvider<T>> extends Composite<L> {}

class MyList extends ListLayout<Person, IronList<Person>> {}

---

@Legioth commented on Tue May 29 2018

I think this is a generic Flow issue related to finding $server methods from composite content classes.

[heruan]

It is generic, indeed. Workaround is to mimic @ClientCallable-annotated methods in the composite: easy for IronList, e.g.

public class MyComposite extends Composite<IronList> {

    @ClientCallable(DisabledUpdateMode.ALWAYS)
    private void setRequestedRange(int start, int length) {
        getContent().getDataCommunicator().setRequestedRange(start, length);
    }
}

while for others (like Grid) reflection is needed. I really hope to see this tackled down soon!

[heruan]

@Legioth Do you feel #4298 covers this? I'm not fully aware of all the endpoints of RPC method/events for $server calls.