com.googlecode.whatswrong.javautils
Class HashMultiMapArrayList<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.HashMap<K,List<V>>
          com.googlecode.whatswrong.javautils.HashMultiMapArrayList<K,V>

All Implemented Interfaces:

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

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

A HashMultiMapArrayList is a mapping from keys to array lists of values.

Author:

Sebastian Riedel

See Also:

Serialized Form

Nested Class Summary

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

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

Field Summary

protected List<V>

emptyList the empty list to be returned when there is key without values.

Constructor Summary

HashMultiMapArrayList()

Method Summary

void	add(K key, V value) Adds a value to the list of values of the given key.
HashMultiMapArrayList<K,V>	deepcopy() Creates a deep copy of this mapping.
List<V>	get(Object o) Returns the list of values associated with the given key.

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, isEmpty, keySet, put, putAll, remove, 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

Field Detail

emptyList

protected List<V> emptyList

the empty list to be returned when there is key without values.

Constructor Detail

HashMultiMapArrayList

public HashMultiMapArrayList()

Method Detail

add

public void add(K key,
                V value)

Adds a value to the list of values of the given key.

Parameters:

key - the key value.

value - the value to add to the list of values of the given key.

deepcopy

public HashMultiMapArrayList<K,V> deepcopy()

Creates a deep copy of this mapping.

Returns:

A deep copy of this mapping.

get

public List<V> get(Object o)

Returns the list of values associated with the given key.

Specified by:

get in interface Map<K,List<V>>

Overrides:

get in class HashMap<K,List<V>>

Parameters:

o - the key to get the values for.

Returns:

a list of values for the given keys or the empty list of no such value exist.