com.google.common.collect
Class ForwardingMapEntry<K,V>

java.lang.Object
  com.google.common.collect.ForwardingObject
      com.google.common.collect.ForwardingMapEntry<K,V>

All Implemented Interfaces:

Serializable, Map.Entry<K,V>

public abstract class ForwardingMapEntry<K,V>
extends ForwardingObject
implements Map.Entry<K,V>

A map entry which forwards all its method calls to another map entry. Subclasses should override one or more methods to change or add behavior of the backing map entry as desired per the decorator pattern.

Author:

Mike Bostock

See Also:

ForwardingObject, Serialized Form

Constructor Summary

protected

ForwardingMapEntry(Map.Entry<K,V> delegate)

Method Summary

protected Map.Entry<K,V>	delegate() Returns the backing delegate object.
boolean	equals(Object obj)
K	getKey()
V	getValue()
int	hashCode()
V	setValue(V value)

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

Constructor Detail

ForwardingMapEntry

protected ForwardingMapEntry(Map.Entry<K,V> delegate)

Method Detail

delegate

protected Map.Entry<K,V> delegate()

Description copied from class: ForwardingObject

Returns the backing delegate object. This method should be overridden to specify the correct return type. For example:

  @SuppressWarnings("unchecked")
  @Override protected Foo delegate() {
    return (Foo) super.delegate();
  }

This method should always return the same delegate instance that was passed to the constructor.

Overrides:

delegate in class ForwardingObject

getKey

public K getKey()

Specified by:

getKey in interface Map.Entry<K,V>

getValue

public V getValue()

Specified by:

getValue in interface Map.Entry<K,V>

setValue

public V setValue(V value)

Specified by:

setValue in interface Map.Entry<K,V>

equals

public boolean equals(Object obj)

Specified by:

equals in interface Map.Entry<K,V>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map.Entry<K,V>

Overrides:

hashCode in class Object