org.eclipse.smila.utils.collections
Class MultiValueMap<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.HashMap<K,java.util.List<V>>
          org.eclipse.smila.utils.collections.MultiValueMap<K,V>

Type Parameters:

K - class of the keys of this map

V - class of the map values. Note that the action map value type is List, because this map stores multiple values for each key

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<K,java.util.List<V>>

public class MultiValueMap<K,V>
extends java.util.HashMap<K,java.util.List<V>>

allows multiple values to be stored against a single key.

See Also:

Serialized Form

Nested Class Summary

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

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

Constructor Summary

MultiValueMap()
Default Constructor.

MultiValueMap(int size)
Conversion Constructor.

Method Summary

java.lang.Object	add(K key, V value) add another value to the given key.
void	addKey(K key) set an empty value list.
java.util.List<V>	getValues(K key)

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, get, 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

Constructor Detail

MultiValueMap

public MultiValueMap()

Default Constructor.

MultiValueMap

public MultiValueMap(int size)

Conversion Constructor.

Parameters:

size - the initial size of this map

Method Detail

getValues

public java.util.List<V> getValues(K key)

Parameters:

key - a key

Returns:

a list of values for this key

add

public java.lang.Object add(K key,
                            V value)

add another value to the given key.

Parameters:

key - key

value - a new value

Returns:

the value.

addKey

public void addKey(K key)

set an empty value list. for the given key. Existing values will be overwritten.

Parameters:

key - the key