Package net.cscott.jutil

Class MapWrapper<K,V>

java.lang.Object

net.cscott.jutil.MapWrapper<K,V>

All Implemented Interfaces:

Map<K,V>

Direct Known Subclasses:

GenericInvertibleMap, UnmodifiableMap

public abstract class MapWrapper<K,V>
extends Object
implements Map<K,V>

MapWrapper is a class that acts as a proxy for another backing map, to allow for easy extension of Map functionality while not restricting developers to one particular Map implementation.

Author:

Felix S. Klock II <pnkfelix@mit.edu>

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
MapWrapper()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object o)
boolean	containsValue(Object o)
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object o)
V	get(Object o)
int	hashCode()
boolean	isEmpty()
Set<K>	keySet()
V	put(K k, V v)
void	putAll(Map<? extends K,? extends V> m)
V	remove(Object o)
int	size()
String	toString()
Collection<V>	values()
protected abstract Map<K,V>	wrapped()	Implementations should return the wrapped Map here.

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

Constructor Details

MapWrapper

public MapWrapper()

Method Details

wrapped

protected abstract Map<K,V> wrapped()

Implementations should return the wrapped Map here.

Since:

1.3

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object o)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object o)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object o)

Specified by:

get in interface Map<K,V>

put

public V put(K k,
 V v)

Specified by:

put in interface Map<K,V>

remove

public V remove(Object o)

Specified by:

remove in interface Map<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,V>

Overrides:

hashCode in class Object