/**
 * Orders the given list according to the ids.
 *
 * @param idFunction object to id
 * @param objects object list
 * @param ids ordered ids
 * @param <T> object type
 * @return ordered list of objects
 */
public static <K extends Serializable, T> List<T> fixOrder(final Function<T, K> idFunction, final List<T> objects, final List<K> ids) {
    final List<T> reordered = new ArrayList<>(ids.size());
    final Map<Serializable, T> map = new HashMap<>(ids.size());
    objects.forEach(t -> map.put(idFunction.apply(t), t));
    ids.forEach(id -> reordered.add(map.get(id)));
    return reordered;
}

/**
 * Orders the given list according to the ids.
 *
 * @param idFunction object to id
 * @param objects object list
 * @param ids ordered ids
 * @param <T> object type
 * @return ordered list of objects
 */
public static <K extends Serializable, T> List<T> fixOrder(final Function<T, K> idFunction, final List<T> objects, final K... ids) {
    return fixOrder(idFunction, objects, Arrays.asList(ids));
}