Method filterFiltered

output/java_guava/1.4.19/Maps.java:2695–2697

Support clear(), removeAll(), and retainAll() when filtering a filtered map.

(AbstractFilteredMap<K, V> map, Predicate<? super Entry<K, V>> entryPredicate)

   */

  private static <K, V> Map<K, V> filterFiltered(AbstractFilteredMap<K, V> map, Predicate<? super Entry<K, V>> entryPredicate) {
    return new FilteredEntryMap<K, V>(map.unfiltered, Predicates.<Entry<K, V>>and(map.predicate, entryPredicate));
  }

  private abstract static class AbstractFilteredMap<K, V> extends ViewCachingAbstractMap<K, V> {
    final Map<K, V> unfiltered;