common
Class MultisetBackedSet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet
          common.MultisetBackedSet

All Implemented Interfaces:

java.lang.Iterable, java.util.Collection, java.util.Set

public class MultisetBackedSet
extends java.util.AbstractSet

An unmodifiable Set that is backed by a Multiset. The elements in the set are the distinct elements of the multiset.

Constructor Summary

MultisetBackedSet(Multiset s)
Creates a new MultisetBackedSet backed by the given multiset.

Method Summary

boolean	contains(java.lang.Object o) Returns true if this set contains the given element, that is, if the underlying multiset contains at least one occurrence of that element.
java.util.Iterator	iterator() Returns an iterator over the elements of this set.
int	size() Returns the size of this set, which is the number of distinct elements in the underlying multiset.

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, containsAll, isEmpty, remove, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

add, addAll, clear, containsAll, isEmpty, remove, retainAll, toArray, toArray

Constructor Detail

MultisetBackedSet

public MultisetBackedSet(Multiset s)

Creates a new MultisetBackedSet backed by the given multiset.

Method Detail

size

public int size()

Returns the size of this set, which is the number of distinct elements in the underlying multiset.

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

Specified by:

size in class java.util.AbstractCollection

contains

public boolean contains(java.lang.Object o)

Returns true if this set contains the given element, that is, if the underlying multiset contains at least one occurrence of that element.

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

Overrides:

contains in class java.util.AbstractCollection

iterator

public java.util.Iterator iterator()

Returns an iterator over the elements of this set. This is like calling entrySet().iterator() on the underlying multiset, except that the objects returned by the iterator are the elements themselves, not Multiset.Entry objects.

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

Specified by:

iterator in class java.util.AbstractCollection