org.jboss.weld.util.collections

Class Multimaps

java.lang.Object

org.jboss.weld.util.collections.Multimaps

public class Multimaps
extends Object

Multimap utilities.

Author:

Jozef Hartinger

Field Summary

Fields

Modifier and Type	Field and Description
static Multimap<Object,Object>	EMPTY_MULTIMAP

Method Summary

Modifier and Type	Method and Description
static <K,V> Multimap<K,V>	emptyMultimap()
static <K,V> Multimap<K,V>	unmodifiableMultimap(Multimap<K,V> multimap) Note that Multimap.get(Object) always returns unmodifiable collections.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_MULTIMAP

public static final Multimap<Object,Object> EMPTY_MULTIMAP

Method Detail

unmodifiableMultimap

public static <K,V> Multimap<K,V> unmodifiableMultimap(Multimap<K,V> multimap)

Note that Multimap.get(Object) always returns unmodifiable collections. Moreover, it does not trigger initialization of a new value collection (i.e. when no collection of values for a given key exists).

Parameters:

multimap -

Returns:

an unmodifiable view of the given multimap

emptyMultimap

public static <K,V> Multimap<K,V> emptyMultimap()

Returns:

an immutable empty multimap