Class AbstractMultiValuedMap.KeysMultiSet

java.lang.Object

java.util.AbstractCollection<K>

org.apache.commons.collections4.multiset.AbstractMultiSet<K>

org.apache.commons.collections4.multimap.AbstractMultiValuedMap.KeysMultiSet

All Implemented Interfaces:

Iterable<K>, Collection<K>, MultiSet<K>

Enclosing class:

AbstractMultiValuedMap<K,V>

private class AbstractMultiValuedMap.KeysMultiSet
extends AbstractMultiSet<K>

Inner class that provides a MultiSet keys view.

Since:

4.1

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private final class	AbstractMultiValuedMap.KeysMultiSet.MapEntryTransformer

Nested classes/interfaces inherited from class AbstractMultiSet

AbstractMultiSet.AbstractEntry<E>, AbstractMultiSet.EntrySet<E>, AbstractMultiSet.UniqueSet<E>

Nested classes/interfaces inherited from interface MultiSet

MultiSet.Entry<E>

Constructor Summary

Constructors

Modifier	Constructor	Description
private	KeysMultiSet()

Method Summary

Modifier and Type	Method	Description
boolean	contains(Object o)	Determines if the multiset contains the given element.
protected Iterator<MultiSet.Entry<K>>	createEntrySetIterator()	Creates an entry set iterator.
int	getCount(Object object)	Returns the number of occurrence of the given element in this multiset by iterating over its entrySet.
boolean	isEmpty()
int	size()	Returns the number of elements in this multiset.
protected int	uniqueElements()	Returns the number of unique elements in this multiset.

Methods inherited from class AbstractMultiSet

add, add, clear, createEntrySet, createUniqueSet, createUniqueSetIterator, doReadObject, doWriteObject, entrySet, equals, hashCode, iterator, remove, remove, removeAll, setCount, toString, uniqueSet

Methods inherited from class AbstractCollection

addAll, containsAll, retainAll, toArray, toArray

Methods inherited from class Object

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

Methods inherited from interface Collection

addAll, parallelStream, removeIf, spliterator, stream, toArray, toArray

Methods inherited from interface Iterable

forEach

Methods inherited from interface MultiSet

containsAll, retainAll

Constructor Details

KeysMultiSet

private KeysMultiSet()

Method Details

contains

public boolean contains(Object o)

Description copied from class: AbstractMultiSet

Determines if the multiset contains the given element.

Specified by:

contains in interface Collection<K>

Overrides:

contains in class AbstractMultiSet<K>

Parameters:

o - the object to search for

Returns:

true if the multiset contains the given element

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<K>

Overrides:

isEmpty in class AbstractCollection<K>

size

public int size()

Description copied from class: AbstractMultiSet

Returns the number of elements in this multiset.

Specified by:

size in interface Collection<K>

Specified by:

size in interface MultiSet<K>

Overrides:

size in class AbstractMultiSet<K>

Returns:

current size of the multiset

uniqueElements

protected int uniqueElements()

Description copied from class: AbstractMultiSet

Returns the number of unique elements in this multiset.

Specified by:

uniqueElements in class AbstractMultiSet<K>

Returns:

the number of unique elements

getCount

public int getCount(Object object)

Description copied from class: AbstractMultiSet

Returns the number of occurrence of the given element in this multiset by iterating over its entrySet.

Specified by:

getCount in interface MultiSet<K>

Overrides:

getCount in class AbstractMultiSet<K>

Parameters:

object - the object to search for

Returns:

the number of occurrences of the object, zero if not found

createEntrySetIterator

protected Iterator<MultiSet.Entry<K>> createEntrySetIterator()

Description copied from class: AbstractMultiSet

Creates an entry set iterator. Subclasses can override this to return iterators with different properties.

Specified by:

createEntrySetIterator in class AbstractMultiSet<K>

Returns:

the entrySet iterator