org.glassfish.persistence.ejb.entitybean.container.cache

Class FIFOEJBObjectCache

java.lang.Object

com.sun.appserv.util.cache.BaseCache

com.sun.appserv.util.cache.LruCache

com.sun.ejb.containers.util.cache.LruEJBCache

org.glassfish.persistence.ejb.entitybean.container.cache.FIFOEJBObjectCache

All Implemented Interfaces:

com.sun.appserv.util.cache.Cache, EJBObjectCache

public class FIFOEJBObjectCache
extends com.sun.ejb.containers.util.cache.LruEJBCache
implements EJBObjectCache

A FIFO EJB(Local)Object cache that maintains reference count

Author:

Mahesh Kannan

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	FIFOEJBObjectCache.EJBObjectCacheItem

Nested classes/interfaces inherited from class com.sun.appserv.util.cache.LruCache

com.sun.appserv.util.cache.LruCache.LruCacheItem

Nested classes/interfaces inherited from class com.sun.appserv.util.cache.BaseCache

com.sun.appserv.util.cache.BaseCache.CacheItem

Field Summary

Fields

Modifier and Type	Field and Description
protected static boolean	_printRefCount
protected EJBObjectCacheListener	listener
protected int	maxCacheSize
protected String	name
protected Object	refCountLock
protected int	totalRefCount

Fields inherited from class com.sun.ejb.containers.util.cache.LruEJBCache

cacheName

Fields inherited from class com.sun.appserv.util.cache.LruCache

defaultMaxEntries, head, isUnbounded, listSize, NO_TIMEOUT, tail, timeout, trimCount

Fields inherited from class com.sun.appserv.util.cache.BaseCache

bucketLocks, buckets, entryCount, hitCount, listeners, maxBuckets, maxEntries, missCount, refreshFlags, removalCount, threshold

Constructor Summary

Constructors

Constructor and Description
FIFOEJBObjectCache(String name) default constructor
FIFOEJBObjectCache(String name, long timeout) constructor with specified timeout

Method Summary

Modifier and Type	Method and Description
protected com.sun.appserv.util.cache.BaseCache.CacheItem	createItem(int hashCode, Object key, Object value, int size)
protected void	decrementReferenceCount()
protected void	decrementReferenceCount(int count)
Object	get(Object key)
Object	get(Object key, boolean incrementRefCount)
Map	getStats()
protected void	incrementReferenceCount()
void	init(int maxEntries, int numberOfVictimsToSelect, long timeout, float loadFactor, Properties props)
protected Object	internalGet(int hashCode, Object key, boolean incrementRefCount)
protected Object	internalPut(int hashCode, Object key, Object value, int size, boolean incrementRefCount)
protected Object	internalRemove(Object key, boolean decrementRefCount)
protected boolean	isThresholdReached()
protected void	itemAccessed(com.sun.appserv.util.cache.BaseCache.CacheItem item)
protected void	itemRemoved(com.sun.appserv.util.cache.BaseCache.CacheItem item)
static void	main(String[] args)
void	print()
Object	put(Object key, Object value)
Object	put(Object key, Object value, boolean incrementRefCount)
Object	remove(Object key)
Object	remove(Object key, boolean decrementRefCount)
void	setEJBObjectCacheListener(EJBObjectCacheListener listener)
void	trimExpiredEntries(int maxCount)

Methods inherited from class com.sun.ejb.containers.util.cache.LruEJBCache

itemAdded, setCacheName, trimLru

Methods inherited from class com.sun.appserv.util.cache.LruCache

getStatByName, init, itemRefreshed, setTimeout

Methods inherited from class com.sun.appserv.util.cache.BaseCache

_put, _remove, _removeItem, add, add, addCacheListener, clear, clearStats, contains, decrementEntryCount, destroy, elements, eq, get, getAll, getEntryCount, getIndex, getIndex, handleOverflow, hash, incrementAddCount, incrementEntryCount, incrementHitCount, incrementMissCount, incrementOverflowCount, incrementRefreshCount, incrementRemovalCount, init, init, isEmpty, keys, loadValue, notifyRefresh, put, remove, remove, removeAll, trimItem, values, waitRefresh

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.appserv.util.cache.Cache

add, add, addCacheListener, clear, clearStats, contains, destroy, elements, getAll, getEntryCount, getIndex, getStatByName, init, init, isEmpty, keys, notifyRefresh, put, remove, removeAll, values, waitRefresh

Field Detail

maxCacheSize

protected int maxCacheSize

name

protected String name

listener

protected EJBObjectCacheListener listener

refCountLock

protected Object refCountLock

totalRefCount

protected int totalRefCount

_printRefCount

protected static final boolean _printRefCount

Constructor Detail

FIFOEJBObjectCache

public FIFOEJBObjectCache(String name)

default constructor

FIFOEJBObjectCache

public FIFOEJBObjectCache(String name,
                          long timeout)

constructor with specified timeout

Method Detail

init

public void init(int maxEntries,
                 int numberOfVictimsToSelect,
                 long timeout,
                 float loadFactor,
                 Properties props)

Specified by:

init in interface EJBObjectCache

setEJBObjectCacheListener

public void setEJBObjectCacheListener(EJBObjectCacheListener listener)

Specified by:

setEJBObjectCacheListener in interface EJBObjectCache

get

public Object get(Object key)

Specified by:

get in interface com.sun.appserv.util.cache.Cache

Overrides:

get in class com.sun.appserv.util.cache.BaseCache

get

public Object get(Object key,
                  boolean incrementRefCount)

Specified by:

get in interface EJBObjectCache

put

public Object put(Object key,
                  Object value)

Specified by:

put in interface com.sun.appserv.util.cache.Cache

Overrides:

put in class com.sun.appserv.util.cache.BaseCache

put

public Object put(Object key,
                  Object value,
                  boolean incrementRefCount)

Specified by:

put in interface EJBObjectCache

remove

public Object remove(Object key)

Specified by:

remove in interface com.sun.appserv.util.cache.Cache

Overrides:

remove in class com.sun.appserv.util.cache.BaseCache

remove

public Object remove(Object key,
                     boolean decrementRefCount)

Specified by:

remove in interface EJBObjectCache

isThresholdReached

protected boolean isThresholdReached()

Overrides:

isThresholdReached in class com.sun.appserv.util.cache.BaseCache

itemAccessed

protected void itemAccessed(com.sun.appserv.util.cache.BaseCache.CacheItem item)

Overrides:

itemAccessed in class com.sun.appserv.util.cache.LruCache

itemRemoved

protected void itemRemoved(com.sun.appserv.util.cache.BaseCache.CacheItem item)

Overrides:

itemRemoved in class com.sun.appserv.util.cache.LruCache

internalGet

protected Object internalGet(int hashCode,
                             Object key,
                             boolean incrementRefCount)

internalPut

protected Object internalPut(int hashCode,
                             Object key,
                             Object value,
                             int size,
                             boolean incrementRefCount)

print

public void print()

internalRemove

protected Object internalRemove(Object key,
                                boolean decrementRefCount)

createItem

protected com.sun.appserv.util.cache.BaseCache.CacheItem createItem(int hashCode,
                                                                    Object key,
                                                                    Object value,
                                                                    int size)

Overrides:

createItem in class com.sun.appserv.util.cache.LruCache

getStats

public Map getStats()

Specified by:

getStats in interface com.sun.appserv.util.cache.Cache

Overrides:

getStats in class com.sun.appserv.util.cache.LruCache

trimExpiredEntries

public void trimExpiredEntries(int maxCount)

Specified by:

trimExpiredEntries in interface com.sun.appserv.util.cache.Cache

Overrides:

trimExpiredEntries in class com.sun.appserv.util.cache.LruCache

incrementReferenceCount

protected void incrementReferenceCount()

decrementReferenceCount

protected void decrementReferenceCount()

decrementReferenceCount

protected void decrementReferenceCount(int count)

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception