Uses of Interface
org.apache.commons.collections4.MultiValuedMap

Packages that use MultiValuedMap

Package	Description
org.apache.commons.collections4	This package contains the interfaces and utilities shared across all the subpackages of this component.
org.apache.commons.collections4.multimap	This package contains implementations of the MultiValuedMap interfaces.

Uses of MultiValuedMap in org.apache.commons.collections4

Subinterfaces of MultiValuedMap in org.apache.commons.collections4

Modifier and Type	Interface and Description
interface	ListValuedMap<K,V> Defines a map that holds a list of values against each key.
interface	SetValuedMap<K,V> Defines a map that holds a set of values against each key.

Fields in org.apache.commons.collections4 declared as MultiValuedMap

Modifier and Type	Field and Description
static MultiValuedMap	MultiMapUtils.EMPTY_MULTI_VALUED_MAP An empty UnmodifiableMultiValuedMap.

Methods in org.apache.commons.collections4 that return MultiValuedMap

Modifier and Type	Method and Description
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.emptyIfNull(MultiValuedMap<K,V> map) Returns an immutable empty MultiValuedMap if the argument is null, or the argument itself otherwise.
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.emptyMultiValuedMap() Returns immutable EMPTY_MULTI_VALUED_MAP with generic type safety.
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.transformedMultiValuedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer) Returns a TransformedMultiValuedMap backed by the given map.
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.unmodifiableMultiValuedMap(MultiValuedMap<? extends K,? extends V> map) Returns an UnmodifiableMultiValuedMap backed by the given map.

Methods in org.apache.commons.collections4 with parameters of type MultiValuedMap

Modifier and Type	Method and Description
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.emptyIfNull(MultiValuedMap<K,V> map) Returns an immutable empty MultiValuedMap if the argument is null, or the argument itself otherwise.
static <K,V> Collection<V>	MultiMapUtils.getCollection(MultiValuedMap<K,V> map, K key) Gets a Collection from MultiValuedMap in a null-safe manner.
static <K,V> Bag<V>	MultiMapUtils.getValuesAsBag(MultiValuedMap<K,V> map, K key) Gets a Bag from MultiValuedMap in a null-safe manner.
static <K,V> List<V>	MultiMapUtils.getValuesAsList(MultiValuedMap<K,V> map, K key) Gets a List from MultiValuedMap in a null-safe manner.
static <K,V> Set<V>	MultiMapUtils.getValuesAsSet(MultiValuedMap<K,V> map, K key) Gets a Set from MultiValuedMap in a null-safe manner.
static boolean	MultiMapUtils.isEmpty(MultiValuedMap<?,?> map) Null-safe check if the specified MultiValuedMap is empty.
boolean	MultiValuedMap.putAll(MultiValuedMap<? extends K,? extends V> map) Copies all mappings from the specified map to this multi-valued map (optional operation).
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.transformedMultiValuedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer) Returns a TransformedMultiValuedMap backed by the given map.
static <K,V> MultiValuedMap<K,V>	MultiMapUtils.unmodifiableMultiValuedMap(MultiValuedMap<? extends K,? extends V> map) Returns an UnmodifiableMultiValuedMap backed by the given map.

Uses of MultiValuedMap in org.apache.commons.collections4.multimap

Classes in org.apache.commons.collections4.multimap that implement MultiValuedMap

Modifier and Type	Class and Description
class	AbstractListValuedMap<K,V> Abstract implementation of the ListValuedMap interface to simplify the creation of subclass implementations.
class	AbstractMultiValuedMap<K,V> Abstract implementation of the MultiValuedMap interface to simplify the creation of subclass implementations.
class	AbstractMultiValuedMapDecorator<K,V> Decorates another MultiValuedMap to provide additional behaviour.
class	AbstractSetValuedMap<K,V> Abstract implementation of the SetValuedMap interface to simplify the creation of subclass implementations.
class	ArrayListValuedHashMap<K,V> Implements a ListValuedMap, using a HashMap to provide data storage and ArrayLists as value collections.
class	HashSetValuedHashMap<K,V> Implements a SetValuedMap, using a HashMap to provide data storage and HashSets as value collections.
class	TransformedMultiValuedMap<K,V> Decorates another MultiValuedMap to transform objects that are added.
class	UnmodifiableMultiValuedMap<K,V> Decorates another MultiValuedMap to ensure it can't be altered.

Methods in org.apache.commons.collections4.multimap that return MultiValuedMap

Modifier and Type	Method and Description
protected MultiValuedMap<K,V>	AbstractMultiValuedMapDecorator.decorated() The decorated multi-valued map.

Methods in org.apache.commons.collections4.multimap with parameters of type MultiValuedMap

Modifier and Type	Method and Description
boolean	AbstractMultiValuedMap.putAll(MultiValuedMap<? extends K,? extends V> map) Copies all of the mappings from the specified MultiValuedMap to this map.
boolean	AbstractMultiValuedMapDecorator.putAll(MultiValuedMap<? extends K,? extends V> map)
boolean	TransformedMultiValuedMap.putAll(MultiValuedMap<? extends K,? extends V> map)
boolean	UnmodifiableMultiValuedMap.putAll(MultiValuedMap<? extends K,? extends V> map)
static <K,V> TransformedMultiValuedMap<K,V>	TransformedMultiValuedMap.transformedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer) Factory method to create a transforming MultiValuedMap that will transform existing contents of the specified map.
static <K,V> TransformedMultiValuedMap<K,V>	TransformedMultiValuedMap.transformingMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer) Factory method to create a transforming MultiValuedMap.
static <K,V> UnmodifiableMultiValuedMap<K,V>	UnmodifiableMultiValuedMap.unmodifiableMultiValuedMap(MultiValuedMap<? extends K,? extends V> map) Factory method to create an unmodifiable MultiValuedMap.

Constructors in org.apache.commons.collections4.multimap with parameters of type MultiValuedMap

Constructor and Description
AbstractMultiValuedMapDecorator(MultiValuedMap<K,V> map) Constructor that wraps (not copies).
ArrayListValuedHashMap(MultiValuedMap<? extends K,? extends V> map) Creates an ArrayListValuedHashMap copying all the mappings of the given map.
HashSetValuedHashMap(MultiValuedMap<? extends K,? extends V> map) Creates an HashSetValuedHashMap copying all the mappings of the given map.
TransformedMultiValuedMap(MultiValuedMap<K,V> map, Transformer<? super K,? extends K> keyTransformer, Transformer<? super V,? extends V> valueTransformer) Constructor that wraps (not copies).