de.tsl2.nano.collection

Class TimedReferenceMap<V>

java.lang.Object

java.util.AbstractMap<K,V>

de.tsl2.nano.collection.ReferenceMap<Object,V>

de.tsl2.nano.collection.TimedReferenceMap<V>

All Implemented Interfaces:

Serializable, Map<Object,V>

public class TimedReferenceMap<V>
extends ReferenceMap<Object,V>

The ReferenceMap of apache commons is overwritten to add temporarily hard references. If a new object was added (to a weak map), but a reference will be created some milliseconds later, the value may be garbage collected already. This map holds a collection - the TimedReferences to don't lose the object to early.

To set the duration of the hard references, call setTimeToBeOld(long), giving the milliseconds to hold an object at least.

Only the put(Object, Object) method was overridden, AbstractMap.putAll(java.util.Map) should call this put(Object, Object) method. Removing values will not change the TimedReferences!

Version:

$Revision$

Author:

Thomas Schneider

See Also:

Serialized Form

Nested Class Summary

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

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

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
TimedReferenceMap() constructor
TimedReferenceMap(boolean weak) constructor

Method Summary

Modifier and Type	Method and Description
void	clear()
V	put(Object key, V value)
void	removeOldReferences() removeOldReferences
void	setTimeToBeOld(long timeToBeOld) setTimeToBeOld - time to be hold

Methods inherited from class de.tsl2.nano.collection.ReferenceMap

createReference, entrySet, get, remove, size

Methods inherited from class java.util.AbstractMap

clone, containsKey, containsValue, equals, hashCode, isEmpty, keySet, 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 Detail

TimedReferenceMap

public TimedReferenceMap()

constructor

TimedReferenceMap

public TimedReferenceMap(boolean weak)

constructor

Parameters:

weak -

Method Detail

setTimeToBeOld

public void setTimeToBeOld(long timeToBeOld)

setTimeToBeOld - time to be hold

Parameters:

timeToBeOld -

removeOldReferences

public void removeOldReferences()

removeOldReferences

put

public V put(Object key,
             V value)

Specified by:

put in interface Map<Object,V>

Overrides:

put in class ReferenceMap<Object,V>

clear

public void clear()

Specified by:

clear in interface Map<Object,V>

Overrides:

clear in class ReferenceMap<Object,V>