com.helger.commons.collection.impl

Class SoftLinkedHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

com.helger.commons.collection.impl.AbstractSoftMap<K,V>

com.helger.commons.collection.impl.SoftLinkedHashMap<K,V>

Type Parameters:

K - Key type

V - Value type

All Implemented Interfaces:

Map<K,V>

public class SoftLinkedHashMap<K,V>
extends AbstractSoftMap<K,V>

Soft HashMap implementation based on http://www.javaspecialists.eu/archive/Issue015.html
The entrySet implementation is from org.hypergraphdb.util

Author:

Philip Helger

Nested Class Summary

Nested classes/interfaces inherited from class com.helger.commons.collection.impl.AbstractSoftMap

AbstractSoftMap.SoftValue<K,V>

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>

Field Summary

Fields inherited from class com.helger.commons.collection.impl.AbstractSoftMap

m_aSrcMap

Constructor Summary

Constructors

Constructor and Description
SoftLinkedHashMap(int nMaxSize)

Method Summary

Modifier and Type	Method and Description
int	getMaxSize()
protected void	onRemoveEldestEntry(int nSize, Map.Entry<K,V> aEldest) Protected method that is invoked every time the oldest entry is removed.

Methods inherited from class com.helger.commons.collection.impl.AbstractSoftMap

clear, entrySet, get, onEntryRemoved, put, 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

SoftLinkedHashMap

public SoftLinkedHashMap(@Nonnegative
                         int nMaxSize)

Method Detail

getMaxSize

@Nonnegative
public final int getMaxSize()

Returns:

The maximum number of elements that can reside inside this object. Never < 0.

onRemoveEldestEntry

@OverrideOnDemand
protected void onRemoveEldestEntry(@Nonnegative
                                                      int nSize,
                                                      @Nonnull
                                                      Map.Entry<K,V> aEldest)

Protected method that is invoked every time the oldest entry is removed.

Parameters:

nSize - Current size of the map. Always ≥ 0.

aEldest - The map entry that is removed. Never null.