Package org.apache.openjpa.lib.util.collections

Class AbstractMapEntryDecorator<K,V>

java.lang.Object

org.apache.openjpa.lib.util.collections.AbstractMapEntryDecorator<K,V>

Type Parameters:

K - the type of keys

V - the type of mapped values

All Implemented Interfaces:

Map.Entry<K,V>, KeyValue<K,V>

Direct Known Subclasses:

AbstractDualBidiMap.MapEntry

public abstract class AbstractMapEntryDecorator<K,V>
extends Object
implements Map.Entry<K,V>, KeyValue<K,V>

Provides a base decorator that allows additional functionality to be added to a Map.Entry.

Since:

3.0

Constructor Summary

Constructors

Constructor	Description
AbstractMapEntryDecorator(Map.Entry<K,V> entry)	Constructor that wraps (not copies).

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object object)
K	getKey()	Gets the key from the pair.
protected Map.Entry<K,V>	getMapEntry()	Gets the map being decorated.
V	getValue()	Gets the value from the pair.
int	hashCode()
V	setValue(V object)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractMapEntryDecorator

public AbstractMapEntryDecorator(Map.Entry<K,V> entry)

Constructor that wraps (not copies).

Parameters:

entry - the Map.Entry to decorate, must not be null

Throws:

NullPointerException - if the collection is null

Method Details

getMapEntry

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

Gets the map being decorated.

Returns:

the decorated map

getKey

public K getKey()

Description copied from interface: KeyValue

Gets the key from the pair.

Specified by:

getKey in interface KeyValue<K,V>

Specified by:

getKey in interface Map.Entry<K,V>

Returns:

the key

getValue

public V getValue()

Description copied from interface: KeyValue

Gets the value from the pair.

Specified by:

getValue in interface KeyValue<K,V>

Specified by:

getValue in interface Map.Entry<K,V>

Returns:

the value

setValue

public V setValue(V object)

Specified by:

setValue in interface Map.Entry<K,V>

equals

public boolean equals(Object object)

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

toString

public String toString()

Overrides:

toString in class Object