org.omnaest.utils.structure.map.dualmap
Class LinkedHashDualMap<K,V>

java.lang.Object
  org.omnaest.utils.structure.map.dualmap.LinkedHashDualMap<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

Serializable, Map<K,V>, DualMap<K,V>

public class LinkedHashDualMap<K,V>
extends Object
implements DualMap<K,V>

DualMap implementation which makes use of two LinkedHashMap instances to get an index on keys and values.

Author:

Omnaest

See Also:

Serialized Form

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

protected Map<K,V>	keyToValueMap
protected static long	serialVersionUID
protected Map<V,K>	valueToKeyMap

Constructor Summary

	LinkedHashDualMap()
protected	LinkedHashDualMap(Map<K,V> keyToValueMap, Map<V,K> valueToKeyMap)

Method Summary

void	clear()
boolean	contains(Object element) Returns true, if the element is contained as key or value
boolean	containsKey(Object key)
boolean	containsValue(Object key)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
DualMap<V,K>	invert() Returns the same DualMap instance but with inverted key and value
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
DualMap<K,V>	putAll(DualMap<? extends K,? extends V> dualMap)
void	putAll(Map<? extends K,? extends V> map)
V	remove(Object key)
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

serialVersionUID

protected static final long serialVersionUID

See Also:

Constant Field Values

keyToValueMap

protected final Map<K,V> keyToValueMap

valueToKeyMap

protected final Map<V,K> valueToKeyMap

Constructor Detail

LinkedHashDualMap

public LinkedHashDualMap()

See Also:

LinkedHashDualMap

LinkedHashDualMap

protected LinkedHashDualMap(Map<K,V> keyToValueMap,
                            Map<V,K> valueToKeyMap)

Parameters:

keyToValueMap -

valueToKeyMap -

See Also:

LinkedHashDualMap

Method Detail

clear

public void clear()

Specified by:

clear in interface Map<K,V>

contains

public boolean contains(Object element)

Description copied from interface: DualMap

Returns true, if the element is contained as key or value

Specified by:

contains in interface DualMap<K,V>

Returns:

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object key)

Specified by:

containsValue in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

putAll

public DualMap<K,V> putAll(DualMap<? extends K,? extends V> dualMap)

Specified by:

putAll in interface DualMap<K,V>

Returns:

this

See Also:

Map.put(Object, Object), Map.putAll(Map), #putAllSecondElementToFirstElement(Map)

putAll

public void putAll(Map<? extends K,? extends V> map)

Specified by:

putAll in interface Map<K,V>

invert

public DualMap<V,K> invert()

Description copied from interface: DualMap

Returns the same DualMap instance but with inverted key and value

Specified by:

invert in interface DualMap<K,V>

Returns:

DualMap

toString

public String toString()

Overrides:

toString in class Object

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>