org.jclouds.util

Class Multimaps2

java.lang.Object

org.jclouds.util.Multimaps2

public class Multimaps2
extends Object

Author:

Adrian Cole

Constructor Summary

Constructors

Constructor and Description
Multimaps2()

Method Summary

Methods

Modifier and Type	Method and Description
static <K,V> com.google.common.collect.ImmutableMultimap<K,V>	fromOldSchool(Map<K,Set<V>> in) Deprecated.
static <K,V> com.google.common.collect.Multimap<K,V>	replaceEntries(com.google.common.collect.Multimap<K,V> fromMultimap, com.google.common.collect.Multimap<K,V> updates)
static <K,V> com.google.common.collect.Multimap<K,V>	replaceValue(com.google.common.collect.Multimap<K,V> fromMultimap, K key, V value)
static <K,V> Map<K,Set<V>>	toOldSchool(com.google.common.collect.Multimap<K,V> in) Deprecated.
static <K1,K2,V> com.google.common.collect.Multimap<K2,V>	transformKeys(com.google.common.collect.Multimap<K1,V> in, com.google.common.base.Function<K1,K2> fn) change the keys but keep the values in-tact.
static <K,V> com.google.common.collect.Multimap<K,V>	withoutKey(com.google.common.collect.Multimap<K,V> fromMultimap, K key)
static <K,V> com.google.common.collect.Multimap<K,V>	withoutKeys(com.google.common.collect.Multimap<K,V> fromMultimap, Set<K> keys)

Methods inherited from class java.lang.Object

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

Constructor Detail

Multimaps2

public Multimaps2()

Method Detail

toOldSchool

@Deprecated
public static <K,V> Map<K,Set<V>> toOldSchool(com.google.common.collect.Multimap<K,V> in)

Deprecated.

The traditional way to represent a graph in Java is Map>, which is awkward in a number of ways. Guava's Multimap framework makes it easy to handle a mapping from keys to multiple values.

Until we write or discover a gson Multimap deserializer, we may be stuck with this. TODO: ask on stackoverflow and/or jesse wilson

fromOldSchool

@Deprecated
public static <K,V> com.google.common.collect.ImmutableMultimap<K,V> fromOldSchool(Map<K,Set<V>> in)

Deprecated.

See Also:

toOldSchool(com.google.common.collect.Multimap<K, V>)

replaceValue

public static <K,V> com.google.common.collect.Multimap<K,V> replaceValue(com.google.common.collect.Multimap<K,V> fromMultimap,
                                                         K key,
                                                         V value)

replaceEntries

public static <K,V> com.google.common.collect.Multimap<K,V> replaceEntries(com.google.common.collect.Multimap<K,V> fromMultimap,
                                                           com.google.common.collect.Multimap<K,V> updates)

withoutKey

public static <K,V> com.google.common.collect.Multimap<K,V> withoutKey(com.google.common.collect.Multimap<K,V> fromMultimap,
                                                       K key)

withoutKeys

public static <K,V> com.google.common.collect.Multimap<K,V> withoutKeys(com.google.common.collect.Multimap<K,V> fromMultimap,
                                                        Set<K> keys)

transformKeys

public static <K1,K2,V> com.google.common.collect.Multimap<K2,V> transformKeys(com.google.common.collect.Multimap<K1,V> in,
                                                               com.google.common.base.Function<K1,K2> fn)

change the keys but keep the values in-tact.

Type Parameters:

K1 - input key type

K2 - output key type

V - value type

Parameters:

in - input map to transform

fn - how to transform the values

Returns:

immutableMap with the new keys.