DualHashBidiMap

Class Overview

Implementation of 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.

Summary

[Expand] Inherited Fields
From class org.apache.commons.collections.bidimap.AbstractDualBidiMap protected Set entrySet View of the entries. protected BidiMap inverseBidiMap Inverse view of this map. protected Set keySet View of the keys. protected final Map[] maps Delegate map array. protected Collection values View of the values.

[Expand] Inherited Methods
From class org.apache.commons.collections.bidimap.AbstractDualBidiMap void clear() boolean containsKey(Object key) boolean containsValue(Object value) abstract BidiMap createBidiMap(Map normalMap, Map reverseMap, BidiMap inverseMap) Creates a new instance of the subclass. Iterator createEntrySetIterator(Iterator iterator) Creates an entry set iterator. Iterator createKeySetIterator(Iterator iterator) Creates a key set iterator. Map createMap() This method is deprecated. For constructors, use the new two map constructor. For deserialization, populate the maps array directly in readObject. Iterator createValuesIterator(Iterator iterator) Creates a values iterator. Set entrySet() Gets an entrySet view of the map. boolean equals(Object obj) Object get(Object key) Object getKey(Object value) Gets the key that is currently mapped to the specified value. int hashCode() BidiMap inverseBidiMap() Gets a view of this map where the keys and values are reversed. boolean isEmpty() Set keySet() Gets a keySet view of the map. MapIterator mapIterator() Obtains a MapIterator over the map. Object put(Object key, Object value) Puts the key-value pair into the map, replacing any previous pair. void putAll(Map map) Object remove(Object key) Object removeValue(Object value) Removes the key-value pair that is currently mapped to the specified value (optional operation). int size() String toString() Collection values() Gets a values view of the map.
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait() final void wait(long arg0, int arg1) final void wait(long arg0)
From interface java.util.Map abstract void clear() abstract boolean containsKey(Object arg0) abstract boolean containsValue(Object arg0) abstract Set<Entry<K, V>> entrySet() abstract boolean equals(Object arg0) abstract V get(Object arg0) abstract int hashCode() abstract boolean isEmpty() abstract Set<K> keySet() abstract V put(K arg0, V arg1) abstract void putAll(Map<? extends K, ? extends V> arg0) abstract V remove(Object arg0) abstract int size() abstract Collection<V> values()
From interface org.apache.commons.collections.BidiMap abstract Object getKey(Object value) Gets the key that is currently mapped to the specified value. abstract BidiMap inverseBidiMap() Gets a view of this map where the keys and values are reversed. abstract MapIterator mapIterator() Obtains a MapIterator over the map. abstract Object put(Object key, Object value) Puts the key-value pair into the map, replacing any previous pair. abstract Object removeValue(Object value) Removes the key-value pair that is currently mapped to the specified value (optional operation).
From interface org.apache.commons.collections.IterableMap abstract MapIterator mapIterator() Obtains a MapIterator over the map.