Module org.apache.wicket.util

Package org.apache.wicket.util.collections

Class MultiMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,List<V>>

org.apache.wicket.util.collections.MultiMap<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

Serializable, Cloneable, Map<K,List<V>>

public class MultiMap<K,V>
extends HashMap<K,List<V>>

A simple multimap

Author:

igor

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

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

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

Constructor Summary

Constructors

Constructor	Description
MultiMap()	Constructor
MultiMap(int initialCapacity)	Constructor
MultiMap(int initialCapacity, float loadFactor)	Constructor
MultiMap(Map<? extends K,? extends List<V>> m)	Constructor

Method Summary

Modifier and Type	Method	Description
void	addValue(K key, V value)	Adds value to the specified key
V	getFirstValue(K key)	Gets the first value in the value list
void	removeValue(K key, V value)	Removes value from the specified key
void	replaceValues(K key, V value)	Replaces all existing values with the specified value.

Methods inherited from class java.util.HashMap

clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Details

MultiMap

public MultiMap()

Constructor

See Also:

• HashMap()

MultiMap

public MultiMap(int initialCapacity,
 float loadFactor)

Constructor

Parameters:

initialCapacity -

loadFactor -

See Also:

• HashMap(int, float)

MultiMap

public MultiMap(int initialCapacity)

Constructor

Parameters:

initialCapacity -

See Also:

• HashMap(int)

MultiMap

public MultiMap(Map<? extends K,? extends List<V>> m)

Constructor

Parameters:

m -

See Also:

• HashMap(Map)

Method Details

addValue

public void addValue(K key,
 V value)

Adds value to the specified key

Parameters:

key -

value -

removeValue

public void removeValue(K key,
 V value)

Removes value from the specified key

Parameters:

key -

value -

replaceValues

public void replaceValues(K key,
 V value)

Replaces all existing values with the specified value. If no values exist for the key the value will be added.

Parameters:

key -

value -

getFirstValue

public V getFirstValue(K key)

Gets the first value in the value list

Parameters:

key -

Returns:

first value