MovieDatabaseHelper.java

public class MovieDatabaseHelper extends BaseDatabaseHelper {

    private MovieDao movieDao;

    public MovieDatabaseHelper(Context context) {
        super(context);
        movieDao = appDatabase.getMovieDao();
    }

    public LiveData<List<Movie>> getAll() {
        return movieDao.getAll();
    }

    public void save(List<Movie> movies) {
        movieDao.insert(movies);
    }
}