Uses of Interface org.apache.commons.collections4.MultiValuedMap (Apache Commons Collections 4.2 API)

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	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	Description
`static MultiValuedMap`	MultiMapUtils.`EMPTY_MULTI_VALUED_MAP`	An empty `UnmodifiableMultiValuedMap`.

Methods in org.apache.commons.collections4 that return MultiValuedMap
Modifier and Type	Method	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	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	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 `ArrayList`s as value collections.
`class`	`HashSetValuedHashMap<K,V>`	Implements a `SetValuedMap`, using a `HashMap` to provide data storage and `HashSet`s 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	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	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	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).