Package jmri.jmrit.logixng.util

Class DuplicateKeyMap<K,V>

java.lang.Object

jmri.jmrit.logixng.util.DuplicateKeyMap<K,V>

All Implemented Interfaces:

Map<K,V>

public class DuplicateKeyMap<K,V>
extends Object
implements Map<K,V>

A map that may contain multiple items with same key

Nested Class Summary

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

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Map<K,List<V>>	_internalMap

Constructor Summary

Constructors

Constructor	Description
DuplicateKeyMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
List<V>	getAll(K key)	Get all items in the map that has the key 'key'
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	remove(Object key)
boolean	remove(Object key, Object value)
void	removeValue(K key, V value)	Remove a value.
int	size()
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, replace, replace, replaceAll

Field Details

_internalMap

Map<K,List<V>> _internalMap

Constructor Details

DuplicateKeyMap

public DuplicateKeyMap()

Method Details

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

getAll

public List<V> getAll(K key)

Get all items in the map that has the key 'key'

Parameters:

key - the key whose associated values is to be returned

Returns:

an unmodifiable list of all the items

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

Returns:

always null

putAll

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

Specified by:

putAll in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

remove

public boolean remove(Object key,
 Object value)

Specified by:

remove in interface Map<K,V>

removeValue

public void removeValue(K key,
 V value)

Remove a value.

Parameters:

key - the key

value - the value

clear

public void clear()

Specified by:

clear 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>