com.zwares.base.cache
Class HashCache

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

public class HashCache

extends java.lang.Object

Field Summary

protected com.zwares.base.cache.LockedLinkedList	_accessList
protected com.zwares.base.cache.LockedLinkedList	_ageList
protected long	_cacheHits
protected long	_cacheMisses
protected static Clock	_clock
protected int	_currentSize
protected java.util.Map	_lookup
protected ReaderWriterLock	_lookupLock
protected long	_maxAge
protected int	_maxObjectSize
protected int	_maxSize
protected static java.util.Timer	_tidyTimer
static long	DEFAULT_TIDY_INTERVAL

Constructor Summary

HashCache(int maxSize, int maxObjectSize, long maxAge)

HashCache(int maxSize, int maxObjectSize, long maxAge, long tidyInterval)

Method Summary

protected void	acquireForWrite()
void	cleanLongestDeath()
Cacheable	get(java.lang.Object key)
int	getCurrentSize()
long	getNumberOfCacheHits()
long	getNumberOfCacheMisses()
static void	main(java.lang.String[] args)
Cacheable	put(java.lang.Object key, Cacheable object)
protected void	releaseForWrite()
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

DEFAULT_TIDY_INTERVAL

public static final long DEFAULT_TIDY_INTERVAL

See Also:

Constant Field Values

_clock

protected static Clock _clock

_tidyTimer

protected static java.util.Timer _tidyTimer

_lookupLock

protected ReaderWriterLock _lookupLock

_lookup

protected java.util.Map _lookup

_ageList

protected com.zwares.base.cache.LockedLinkedList _ageList

_accessList

protected com.zwares.base.cache.LockedLinkedList _accessList

_maxSize

protected int _maxSize

_maxObjectSize

protected int _maxObjectSize

_maxAge

protected long _maxAge

_currentSize

protected int _currentSize

_cacheHits

protected long _cacheHits

_cacheMisses

protected long _cacheMisses

Constructor Detail

HashCache

public HashCache(int maxSize,
                 int maxObjectSize,
                 long maxAge)

HashCache

public HashCache(int maxSize,
                 int maxObjectSize,
                 long maxAge,
                 long tidyInterval)

Method Detail

acquireForWrite

protected void acquireForWrite()

releaseForWrite

protected void releaseForWrite()

getCurrentSize

public int getCurrentSize()

remove

public Cacheable remove(java.lang.Object key)

put

public Cacheable put(java.lang.Object key,
                     Cacheable object)
              throws java.lang.IllegalArgumentException

java.lang.IllegalArgumentException

get

public Cacheable get(java.lang.Object key)

cleanLongestDeath

public void cleanLongestDeath()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getNumberOfCacheHits

public long getNumberOfCacheHits()

getNumberOfCacheMisses

public long getNumberOfCacheMisses()

main

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