@SuppressWarnings("unchecked")
SerializedForm(SortedMultiset<E> multiset) {
this.comparator = multiset.comparator();
int n = multiset.entrySet().size();
elements = (E[]) new Object[n];
counts = new int[n];
int i = 0;
for (Entry<E> entry : multiset.entrySet()) {
elements[i] = entry.getElement();
counts[i] = entry.getCount();
i++;
}
}
/**
* Returns an immutable sorted multiset containing the elements of a sorted multiset, sorted by
* the same {@code Comparator}. That behavior differs from {@link #copyOf(Iterable)}, which always
* uses the natural ordering of the elements.
*
* <p>Despite the method name, this method attempts to avoid actually copying the data when it is
* safe to do so. The exact circumstances under which a copy will or will not be performed are
* undocumented and subject to change.
*
* <p>This method is safe to use even when {@code sortedMultiset} is a synchronized or concurrent
* collection that is currently being modified by another thread.
*
* @throws NullPointerException if {@code sortedMultiset} or any of its elements is null
*/
public static <E> ImmutableSortedMultiset<E> copyOfSorted(SortedMultiset<E> sortedMultiset) {
return copyOfSortedEntries(
sortedMultiset.comparator(), Lists.newArrayList(sortedMultiset.entrySet()));
}