atavism.server.util
Class ForwardReverseMap<K,V>

java.lang.Object
  atavism.server.util.ForwardReverseMap<K,V>

All Implemented Interfaces:

java.util.Map<K,V>

public class ForwardReverseMap<K,V>
extends java.lang.Object
implements java.util.Map<K,V>

a map where you can look it up either in the forward direction or the reverse direction. obviously, this means the map must be 1:1 and onto

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Field Summary

protected java.util.Map<K,V>	forwardMap
protected java.util.concurrent.locks.Lock	lock
protected java.util.Map<V,K>	reverseMap

Constructor Summary

ForwardReverseMap()

Method Summary

void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
V	get(java.lang.Object key)
K	getByValue(java.lang.Object value) reverse lookup
boolean	isEmpty()
java.util.Set<K>	keySet()
V	put(K key, V value)
void	putAll(java.util.Map<? extends K,? extends V> m)
V	remove(java.lang.Object key)
K	removeByValue(java.lang.Object value)
int	size()
java.util.Collection<V>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

forwardMap

protected java.util.Map<K,V> forwardMap

reverseMap

protected java.util.Map<V,K> reverseMap

lock

protected transient java.util.concurrent.locks.Lock lock

Constructor Detail

ForwardReverseMap

public ForwardReverseMap()

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map<K,V>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<K,V>

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<K,V>

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface java.util.Map<K,V>

get

public V get(java.lang.Object key)

Specified by:

get in interface java.util.Map<K,V>

getByValue

public K getByValue(java.lang.Object value)

reverse lookup

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<K,V>

keySet

public java.util.Set<K> keySet()

Specified by:

keySet in interface java.util.Map<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface java.util.Map<K,V>

putAll

public void putAll(java.util.Map<? extends K,? extends V> m)

Specified by:

putAll in interface java.util.Map<K,V>

remove

public V remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<K,V>

removeByValue

public K removeByValue(java.lang.Object value)

size

public int size()

Specified by:

size in interface java.util.Map<K,V>

values

public java.util.Collection<V> values()

Specified by:

values in interface java.util.Map<K,V>