de.ipcon.tools.cache

Class ObjectCache

java.lang.Object

de.ipcon.tools.cache.ObjectCache

All Implemented Interfaces:

CacheI

Direct Known Subclasses:

CodebausteinCache, TermInfoCache

public class ObjectCache
extends java.lang.Object
implements CacheI

A generic Cache for Java objects with configurable garbage collection. Note: It might be feasible to actually have the GCStrategy maintain the cache, because this way it would be able to use the type of data structure that makes garbage collection most easy. On the other hand this probably would make switching GCStrategies on the fly harder as we would have to get the cache contents from the old to the new one ...

Constructor Summary

Constructors

Constructor and Description
ObjectCache(long _maxSize)
ObjectCache(long _maxSize, long _maxCount)
ObjectCache(long _maxSize, long _maxCount, ObjectCache _parent)
ObjectCache(long _maxSize, long _maxCount, ObjectCache _parent, boolean _redundant)
ObjectCache(long _maxSize, long _maxCount, ObjectCache _parent, boolean _redundant, GCStrategy _gcStrategy)

Method Summary

Modifier and Type	Method and Description
void	clear()
java.lang.Object	computeIfAbsent(java.lang.Object key, java.util.function.Function mappingFunction)
boolean	contains(java.lang.Object key)
boolean	contains(java.lang.String key) Check if there is any object matching the given key in the cache.
boolean	contains(java.lang.String key, java.lang.Object obj) Check if the given obj is already in the cache under the given key.
java.lang.Object	get(java.lang.Object key)
java.lang.Object[]	get(java.lang.Object[] keys)
java.lang.Object	get(java.lang.String key) Returns the Object referenced by String key from the cache (or from the parent cache, if we have one).
long	getCurrentCount()
long	getCurrentSize()
long	getMaxCount()
long	getMaxSize()
ObjectCache	getParent()
boolean	isRedundant()
void	put(java.lang.Object key, java.lang.Object obj)
void	put(java.lang.String key, java.lang.Object obj, long size) Put object obj with size size referenced by key key into the cache, possibly removing some old object(s) when we don't have enough room.
void	remove(java.lang.Object key)
void	remove(java.lang.String key) Removes the Object referenced by String key from the cache.
void	setCurrentCount(long $3)
void	setCurrentSize(long $5)
void	setMaxCount(long $2)
void	setMaxSize(long $4)
void	setParent(ObjectCache $6)
void	setRedundant(boolean $7)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ObjectCache

public ObjectCache(long _maxSize)

ObjectCache

public ObjectCache(long _maxSize,
                   long _maxCount)

ObjectCache

public ObjectCache(long _maxSize,
                   long _maxCount,
                   ObjectCache _parent)

ObjectCache

public ObjectCache(long _maxSize,
                   long _maxCount,
                   ObjectCache _parent,
                   boolean _redundant)

ObjectCache

public ObjectCache(long _maxSize,
                   long _maxCount,
                   ObjectCache _parent,
                   boolean _redundant,
                   GCStrategy _gcStrategy)

Method Detail

clear

public void clear()

Specified by:

clear in interface CacheI

put

public void put(java.lang.Object key,
                java.lang.Object obj)

Specified by:

put in interface CacheI

put

public void put(java.lang.String key,
                java.lang.Object obj,
                long size)

Put object obj with size size referenced by key key into the cache, possibly removing some old object(s) when we don't have enough room.

remove

public void remove(java.lang.Object key)

Specified by:

remove in interface CacheI

remove

public void remove(java.lang.String key)

Removes the Object referenced by String key from the cache.

contains

public boolean contains(java.lang.Object key)

Specified by:

contains in interface CacheI

contains

public boolean contains(java.lang.String key)

Check if there is any object matching the given key in the cache. Needed?

contains

public boolean contains(java.lang.String key,
                        java.lang.Object obj)

Check if the given obj is already in the cache under the given key.

get

public java.lang.Object[] get(java.lang.Object[] keys)

Specified by:

get in interface CacheI

get

public java.lang.Object get(java.lang.Object key)

Specified by:

get in interface CacheI

get

public java.lang.Object get(java.lang.String key)

Returns the Object referenced by String key from the cache (or from the parent cache, if we have one).

computeIfAbsent

public java.lang.Object computeIfAbsent(java.lang.Object key,
                                        java.util.function.Function mappingFunction)

Specified by:

computeIfAbsent in interface CacheI

getMaxCount

public long getMaxCount()

setMaxCount

public void setMaxCount(long $2)

getCurrentCount

public long getCurrentCount()

setCurrentCount

public void setCurrentCount(long $3)

getMaxSize

public long getMaxSize()

setMaxSize

public void setMaxSize(long $4)

getCurrentSize

public long getCurrentSize()

setCurrentSize

public void setCurrentSize(long $5)

getParent

public ObjectCache getParent()

setParent

public void setParent(ObjectCache $6)

isRedundant

public boolean isRedundant()

setRedundant

public void setRedundant(boolean $7)