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

Fields

Modifier and Type	Field and Description
protected java.util.Map<K,V>	forwardMap
protected java.util.concurrent.locks.Lock	lock
protected java.util.Map<V,K>	reverseMap

Constructor Summary

Constructors

Constructor and Description
ForwardReverseMap()

Method Summary

Modifier and Type	Method and Description
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

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

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>