com.google.common.collect

Class WellBehavedMap<K,V>

java.lang.Object

com.google.common.collect.ForwardingObject

com.google.common.collect.ForwardingMap<K,V>

com.google.common.collect.WellBehavedMap<K,V>

All Implemented Interfaces:

java.util.Map<K,V>

@GwtCompatible
final class WellBehavedMap<K,V>
extends ForwardingMap<K,V>

Workaround for EnumMap bug. If you want to pass an EnumMap, with the intention of using its entrySet() method, you should wrap the EnumMap in this class instead.

This class is not thread-safe even if the underlying map is.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	WellBehavedMap.EntrySet

Nested classes/interfaces inherited from class com.google.common.collect.ForwardingMap

ForwardingMap.StandardEntrySet, ForwardingMap.StandardKeySet, ForwardingMap.StandardValues

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

java.util.Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<K,V>	delegate
private java.util.Set<java.util.Map.Entry<K,V>>	entrySet

Constructor Summary

Constructors

Modifier	Constructor and Description
private	WellBehavedMap(java.util.Map<K,V> delegate)

Method Summary

Modifier and Type	Method and Description
protected java.util.Map<K,V>	delegate() Returns the backing delegate instance that methods are forwarded to.
java.util.Set<java.util.Map.Entry<K,V>>	entrySet()
(package private) static <K,V> WellBehavedMap<K,V>	wrap(java.util.Map<K,V> delegate) Wraps the given map into a WellBehavedEntriesMap, which intercepts its entrySet() method by taking the Set<K> keySet() and transforming it to Set<Entry<K, V>>.

Methods inherited from class com.google.common.collect.ForwardingMap

clear, containsKey, containsValue, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, standardClear, standardContainsKey, standardContainsValue, standardEquals, standardHashCode, standardIsEmpty, standardPutAll, standardRemove, standardToString, values

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Detail

delegate

private final java.util.Map<K,V> delegate

entrySet

private java.util.Set<java.util.Map.Entry<K,V>> entrySet

Constructor Detail

WellBehavedMap

private WellBehavedMap(java.util.Map<K,V> delegate)

Method Detail

wrap

static <K,V> WellBehavedMap<K,V> wrap(java.util.Map<K,V> delegate)

Wraps the given map into a WellBehavedEntriesMap, which intercepts its entrySet() method by taking the Set<K> keySet() and transforming it to Set<Entry<K, V>>. All other invocations are delegated as-is.

delegate

protected java.util.Map<K,V> delegate()

Description copied from class: ForwardingObject

Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.

Specified by:

delegate in class ForwardingMap<K,V>

entrySet

public java.util.Set<java.util.Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface java.util.Map<K,V>

Overrides:

entrySet in class ForwardingMap<K,V>