at.tuwien.ifs.somtoolbox.util

Class LeastRecentelyUsedImageCache

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<java.lang.String,java.awt.image.BufferedImage>

at.tuwien.ifs.somtoolbox.util.LeastRecentelyUsedImageCache

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.String,java.awt.image.BufferedImage>

public final class LeastRecentelyUsedImageCache
extends java.util.LinkedHashMap<java.lang.String,java.awt.image.BufferedImage>

A least-recently-used LRU cache, based on LinkedHashMap. This cache can hold a fixed a number of BufferedImage elements, until the specified memory limit is reached. If a new element is added, and the cache is full, the least recently used entry is removed.

Version:

$Id: LeastRecentelyUsedImageCache.java 4156 2011-02-11 15:56:51Z mayer $

Author:

Rudolf Mayer

See Also:

Serialized Form

Nested Class Summary

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

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

Field Summary

Fields

Modifier and Type	Field and Description
private long	maxCacheSize
private java.lang.String	maxCacheSizeReadable
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
LeastRecentelyUsedImageCache(int maxCacheSizeInMBit)
LeastRecentelyUsedImageCache(long maxCacheSize)

Method Summary

Modifier and Type	Method and Description
long	getCurrentSize()
double	getCurrentSizeInMBit()
long	getMaxCacheSize()
long	getMaxCacheSizeInMBit()
protected boolean	removeEldestEntry(java.util.Map.Entry<java.lang.String,java.awt.image.BufferedImage> eldest)
void	setMaxCacheSize(long maxCacheSize)
void	setMaxCacheSizeInMBit(int maxCacheSizeInMBit)

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

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

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

maxCacheSize

private long maxCacheSize

maxCacheSizeReadable

private java.lang.String maxCacheSizeReadable

Constructor Detail

LeastRecentelyUsedImageCache

public LeastRecentelyUsedImageCache(int maxCacheSizeInMBit)

LeastRecentelyUsedImageCache

public LeastRecentelyUsedImageCache(long maxCacheSize)

Method Detail

removeEldestEntry

protected boolean removeEldestEntry(java.util.Map.Entry<java.lang.String,java.awt.image.BufferedImage> eldest)

Overrides:

removeEldestEntry in class java.util.LinkedHashMap<java.lang.String,java.awt.image.BufferedImage>

getMaxCacheSize

public long getMaxCacheSize()

Returns:

Returns the maxCacheSize.

getMaxCacheSizeInMBit

public long getMaxCacheSizeInMBit()

setMaxCacheSize

public void setMaxCacheSize(long maxCacheSize)

Parameters:

maxCacheSize - The maxCacheSize to set.

setMaxCacheSizeInMBit

public void setMaxCacheSizeInMBit(int maxCacheSizeInMBit)

getCurrentSize

public long getCurrentSize()

Returns:

The current size of the cache

getCurrentSizeInMBit

public double getCurrentSizeInMBit()