How to use

retainAll

method

in

com.google.common.collect.Multiset

@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testRetainAllIgnoresCount() {
 initThreeCopies();
 List<E> contents = Helpers.copyToList(getMultiset());
 assertFalse(getMultiset().retainAll(Collections.singleton(e0())));
 expectContents(contents);
}

@Override
public boolean retainAll(Collection<?> arg0) {
  return multiset.retainAll(arg0);
}

@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testRetainAllIgnoresCount() {
 initThreeCopies();
 List<E> contents = Helpers.copyToList(getMultiset());
 assertFalse(getMultiset().retainAll(Collections.singleton(samples.e0)));
 expectContents(contents);
}

/**
 * Keeps the cumulated distance for all the common raw super types of the given references.
 * Interfaces that are more directly implemented will get a lower total count than more general
 * interfaces.
 */
protected void cumulateDistance(final List<LightweightTypeReference> references, Multimap<JvmType, LightweightTypeReference> all,
    Multiset<JvmType> cumulatedDistance) {
  for(LightweightTypeReference other: references) {
    Multiset<JvmType> otherDistance = LinkedHashMultiset.create();
    initializeDistance(other, all, otherDistance);
    cumulatedDistance.retainAll(otherDistance);
    for(Multiset.Entry<JvmType> typeToDistance: otherDistance.entrySet()) {
      if (cumulatedDistance.contains(typeToDistance.getElement()))
        cumulatedDistance.add(typeToDistance.getElement(), typeToDistance.getCount());
    }
  }
}

/**
 * Keeps the cumulated distance for all the common raw super types of the given references.
 * Interfaces that are more directly implemented will get a lower total count than more general
 * interfaces.
 */
protected void cumulateDistance(final List<JvmTypeReference> references, Multimap<JvmType, JvmTypeReference> all,
    Multiset<JvmType> cumulatedDistance) {
  for(JvmTypeReference other: references) {
    Multiset<JvmType> otherDistance = LinkedHashMultiset.create();
    initializeDistance(other, all, otherDistance);
    cumulatedDistance.retainAll(otherDistance);
    for(Multiset.Entry<JvmType> typeToDistance: otherDistance.entrySet()) {
      if (cumulatedDistance.contains(typeToDistance.getElement()))
        cumulatedDistance.add(typeToDistance.getElement(), typeToDistance.getCount());
    }
  }
}

@CollectionSize.Require(SEVERAL)
@CollectionFeature.Require(SUPPORTS_REMOVE)
public void testRetainAllIgnoresCount() {
 initThreeCopies();
 List<E> contents = Helpers.copyToList(getMultiset());
 assertFalse(getMultiset().retainAll(Collections.singleton(e0())));
 expectContents(contents);
}