Package org.jivesoftware.smack.util

Class CleaningWeakReferenceMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,WeakReference<V>>

org.jivesoftware.smack.util.CleaningWeakReferenceMap<K,V>

Type Parameters:

K - The key type.

V - The value type.

All Implemented Interfaces:

Serializable, Cloneable, Map<K,WeakReference<V>>

public class CleaningWeakReferenceMap<K,V>
extends HashMap<K,WeakReference<V>>

Extends a HashMap with WeakReference values, so that weak references which have been cleared are periodically removed from the map. The cleaning occurs as part of put(K, java.lang.ref.WeakReference<V>), after a specific number (cleanInterval) of calls to put(K, java.lang.ref.WeakReference<V>).

See Also:

Serialized Form

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
CleaningWeakReferenceMap()	Initializes a new CleaningWeakReferenceMap instance with the default clean interval.
CleaningWeakReferenceMap(int cleanInterval)	Initializes a new CleaningWeakReferenceMap instance with a given clean interval.

Method Summary

Modifier and Type	Method	Description
WeakReference<V>	put(K key, WeakReference<V> value)

Methods inherited from class java.util.HashMap

clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

CleaningWeakReferenceMap

public CleaningWeakReferenceMap()

Initializes a new CleaningWeakReferenceMap instance with the default clean interval.

CleaningWeakReferenceMap

public CleaningWeakReferenceMap(int cleanInterval)

Initializes a new CleaningWeakReferenceMap instance with a given clean interval.

Parameters:

cleanInterval - the number of calls to put(K, java.lang.ref.WeakReference<V>) after which the map will clean itself.

Method Detail

put

public WeakReference<V> put(K key,
                            WeakReference<V> value)

Specified by:

put in interface Map<K,V>

Overrides:

put in class HashMap<K,WeakReference<V>>