class AlbumDao
{
public:
    AlbumDao(QSqlDatabase& database);
    void init() const;

    void addAlbum(Album& album) const;
    void updateAlbum(const Album& album) const;
    void removeAlbum(int id) const;
    std::unique_ptr<std::vector<std::unique_ptr<Album>>> albums() const;

private:
    QSqlDatabase& mDatabase;
};

unique_ptr<vector<unique_ptr<Album>>> AlbumDao::albums() const
{
    QSqlQuery query("SELECT * FROM albums", mDatabase);
    query.exec();
    unique_ptr<vector<unique_ptr<Album>>> list(new vector<unique_ptr<Album>>());
    while(query.next()) {
        unique_ptr<Album> album(new Album());
        album->setId(query.value("id").toInt());
        album->setName(query.value("name").toString());
        list->push_back(move(album));
    }
    return list;
}