Package org.jppf.utils.collections

Class SoftReferenceValuesMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.jppf.utils.collections.SoftReferenceValuesMap<K,V>

Type Parameters:

K - the type of the keys.

V - the type of the values.

All Implemented Interfaces:

Map<K,V>

Direct Known Subclasses:

ConcurrentSoftReferenceValuesMap, SoftLRUCache

public class SoftReferenceValuesMap<K,V>
extends AbstractMap<K,V>

Map whose values are soft references. When a value has been garbage-collected, the corresponding map entry is removed.

Author:

Laurent Cohen

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

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

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
SoftReferenceValuesMap()	Default constructor.
SoftReferenceValuesMap(int capacity)	Default constructor.

Method Summary

Modifier and Type	Method	Description
void	clear()
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
V	remove(Object key)
int	size()

Methods inherited from class java.util.AbstractMap

clone, containsKey, containsValue, equals, hashCode, putAll, toString, values

Methods inherited from class java.lang.Object

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

SoftReferenceValuesMap

public SoftReferenceValuesMap()

Default constructor.

SoftReferenceValuesMap

public SoftReferenceValuesMap(int capacity)

Default constructor.

Parameters:

capacity - an optional maximum capacity.

Method Details

size

public int size()

Specified by:

size in interface Map<K,V>

Overrides:

size in class AbstractMap<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

Overrides:

isEmpty in class AbstractMap<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

Overrides:

get in class AbstractMap<K,V>

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

Overrides:

put in class AbstractMap<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class AbstractMap<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class AbstractMap<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

Overrides:

keySet in class AbstractMap<K,V>