com.zwares.base.cache
Class Cache

java.lang.Object
  |
  +--com.zwares.base.cache.Cache

public class Cache

extends java.lang.Object

Nested Class Summary

class	Cache.CachedObject
class	Cache.ExpiringThread

Field Summary

protected long	_cacheHits
protected long	_cacheMisses
protected Clock	_clock
protected int	_currentSize
protected long	_longetivity
protected int	_maxSize
protected DoublyLinkedList	_mostRecentlyExpired
protected DoublyLinkedList	_mostRecentlyUsed
protected java.util.Map	_objectLookUp
protected static Clock	_sharedClock
static int	BYTES_PER_KILOBYTE
static int	DEFAULT_CLOCK_REFRESH_INTERVAL
static int	DEFAULT_MAX_SIZE
static int	DEFAULT_REFRESH_INTERVAL

Constructor Summary

Cache()

Cache(int maxSize)

Cache(int maxSize, long longetivity)

Cache(int maxSize, long longetivity, Clock clock)

Method Summary

protected int	evict(int minSize)
protected int	evictExpired()
protected int	evictLeastRecentlyUsed()
protected int	evictLeastRecentlyUsed(int minSize)
Cacheable	get(java.lang.Object key)
int	getCurrentSize()
long	getNumberOfCacheHits()
long	getNumberOfCacheMisses()
static void	main(java.lang.String[] args)
protected void	promote(Cache.CachedObject co)
Cacheable	put(java.lang.Object key, Cacheable obj)
Cacheable	remove(java.lang.Object key)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

BYTES_PER_KILOBYTE

public static final int BYTES_PER_KILOBYTE

See Also:

Constant Field Values

DEFAULT_MAX_SIZE

public static final int DEFAULT_MAX_SIZE

See Also:

Constant Field Values

DEFAULT_REFRESH_INTERVAL

public static final int DEFAULT_REFRESH_INTERVAL

See Also:

Constant Field Values

DEFAULT_CLOCK_REFRESH_INTERVAL

public static final int DEFAULT_CLOCK_REFRESH_INTERVAL

See Also:

Constant Field Values

_objectLookUp

protected java.util.Map _objectLookUp

_mostRecentlyUsed

protected DoublyLinkedList _mostRecentlyUsed

_mostRecentlyExpired

protected DoublyLinkedList _mostRecentlyExpired

_maxSize

protected int _maxSize

_currentSize

protected int _currentSize

_cacheHits

protected long _cacheHits

_cacheMisses

protected long _cacheMisses

_clock

protected Clock _clock

_sharedClock

protected static Clock _sharedClock

_longetivity

protected long _longetivity

Constructor Detail

Cache

public Cache()

Cache

public Cache(int maxSize)

Cache

public Cache(int maxSize,
             long longetivity)

Cache

public Cache(int maxSize,
             long longetivity,
             Clock clock)

Method Detail

getCurrentSize

public int getCurrentSize()

getNumberOfCacheHits

public long getNumberOfCacheHits()

getNumberOfCacheMisses

public long getNumberOfCacheMisses()

promote

protected void promote(Cache.CachedObject co)

remove

public Cacheable remove(java.lang.Object key)

evict

protected int evict(int minSize)

evictExpired

protected int evictExpired()

evictLeastRecentlyUsed

protected int evictLeastRecentlyUsed()

evictLeastRecentlyUsed

protected int evictLeastRecentlyUsed(int minSize)

put

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

get

public Cacheable get(java.lang.Object key)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] args)