K
- the type of the keys in the mapV
- the type of the values in the mappublic class DualHashBidiMap<K,V> extends AbstractDualBidiMap<K,V> implements Serializable
BidiMap
that uses two HashMap
instances.
Two HashMap
instances are used in this class.
This provides fast lookups at the expense of storing two sets of map entries.
Commons Collections would welcome the addition of a direct hash-based
implementation of the BidiMap
interface.
NOTE: From Commons Collections 3.1, all subclasses will use HashMap
and the flawed createMap
method is ignored.
AbstractDualBidiMap.BidiMapIterator<K,V>, AbstractDualBidiMap.EntrySet<K,V>, AbstractDualBidiMap.EntrySetIterator<K,V>, AbstractDualBidiMap.KeySet<K>, AbstractDualBidiMap.KeySetIterator<K>, AbstractDualBidiMap.MapEntry<K,V>, AbstractDualBidiMap.Values<V>, AbstractDualBidiMap.ValuesIterator<V>, AbstractDualBidiMap.View<K,V,E>
Modifier | Constructor and Description |
---|---|
|
DualHashBidiMap()
Creates an empty
HashBidiMap . |
|
DualHashBidiMap(Map<? extends K,? extends V> map)
Constructs a
HashBidiMap and copies the mappings from
specified Map . |
protected |
DualHashBidiMap(Map<K,V> normalMap,
Map<V,K> reverseMap,
BidiMap<V,K> inverseBidiMap)
Constructs a
HashBidiMap that decorates the specified maps. |
Modifier and Type | Method and Description |
---|---|
protected BidiMap<V,K> |
createBidiMap(Map<V,K> normalMap,
Map<K,V> reverseMap,
BidiMap<K,V> inverseBidiMap)
Creates a new instance of this object.
|
clear, containsKey, containsValue, createEntrySetIterator, createKeySetIterator, createValuesIterator, entrySet, equals, get, getKey, hashCode, inverseBidiMap, isEmpty, keySet, mapIterator, put, putAll, remove, removeValue, size, toString, values
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll
public DualHashBidiMap()
HashBidiMap
.public DualHashBidiMap(Map<? extends K,? extends V> map)
HashBidiMap
and copies the mappings from
specified Map
.map
- the map whose mappings are to be placed in this mapprotected BidiMap<V,K> createBidiMap(Map<V,K> normalMap, Map<K,V> reverseMap, BidiMap<K,V> inverseBidiMap)
createBidiMap
in class AbstractDualBidiMap<K,V>
normalMap
- the normal direction mapreverseMap
- the reverse direction mapinverseBidiMap
- the inverse BidiMapCopyright © 2001–2019 The Apache Software Foundation. All rights reserved.