LocationNotSupported.java

view.getCurrentLocation()
    .map(locationToPlaceTransformer::apply)

    // TODO: need to show an error with the location name in it if the location isn't supported
    .flatMap(place -> Observable.zip(
            userLocationRepository.isLocationSupported(place), // returns Observable<Boolean>
            Observable.just(place),
            (isLocationSupported, p) -> {
                if (isLocationSupported) {
                    return p;
                } 
                throw new UnsupportedLocationException(p.getName());
            }))

    .map(place -> {
        placesRepository.putRecentPlace(place);
        userLocationRepository.putUserLocation(place);
        return place;
    })
    .subscribe(
            place -> view.onPlaceSelected(place),
            error -> {
              if (MyException.is(error, UNSUPPORTED_LOCATION) {
                  view.showUnsupportedLocationError(((UnsupportedLocationException) error).getName())
              } else {
                  view.showError(error);
              }
            }
    );