org.tinygroup.jspengine.appserv.util.cache
类 BoundedMultiLruCache

java.lang.Object
  org.tinygroup.jspengine.appserv.util.cache.BaseCache
      org.tinygroup.jspengine.appserv.util.cache.MultiLruCache
          org.tinygroup.jspengine.appserv.util.cache.BoundedMultiLruCache

所有已实现的接口：

Cache

public class BoundedMultiLruCache
extends MultiLruCache

MultiLruCache -- in-memory bounded LRU cache with multiple LRU lists Underlying Hashtable is made into logical segments, with each segment having its own LRU list.

嵌套类摘要

从类 org.tinygroup.jspengine.appserv.util.cache.BaseCache 继承的嵌套类/接口

BaseCache.CacheItem

字段摘要

protected long	currentSize
protected long	maxSize

从类 org.tinygroup.jspengine.appserv.util.cache.MultiLruCache 继承的字段

DEFAULT_HASHTABLE_SEGMENT_SIZE, listsLength, LRU_HEAD, LRU_TAIL

从类 org.tinygroup.jspengine.appserv.util.cache.BaseCache 继承的字段

_rb, bucketLocks, buckets, entryCount, listeners, maxBuckets, refreshFlags, threshold

构造方法摘要

BoundedMultiLruCache()

方法摘要

protected void	decrementCurrentSize(int size)
Object	getStatByName(String key) get the desired statistic counter
Map	getStats() get the stats snapshot
protected void	incrementCurrentSize(int size) synchronized counter updates
void	init(int maxCapacity, Properties props) initialize the LRU cache
protected boolean	isThresholdReached() has cache reached its threshold
protected BaseCache.CacheItem	itemAdded(BaseCache.CacheItem item) this item is just added to the cache
protected void	itemRefreshed(BaseCache.CacheItem item, int oldSize) item value has been refreshed
protected void	itemRemoved(BaseCache.CacheItem item) item value has been removed from the cache

从类 org.tinygroup.jspengine.appserv.util.cache.MultiLruCache 继承的方法

createItem, handleOverflow, incrementTrimIndex, itemAccessed, trimLru

从类 org.tinygroup.jspengine.appserv.util.cache.BaseCache 继承的方法

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

从类 java.lang.Object 继承的方法

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

字段详细信息

maxSize

protected long maxSize

currentSize

protected long currentSize

构造方法详细信息

BoundedMultiLruCache

public BoundedMultiLruCache()

方法详细信息

init

public void init(int maxCapacity,
                 Properties props)
          throws Exception

initialize the LRU cache

指定者：

接口 Cache 中的 init

覆盖：

类 MultiLruCache 中的 init

参数：

maxCapacity - maximum number of entries this cache may hold

props - opaque list of properties for a given cache implementation

抛出：

Exception

itemAdded

protected BaseCache.CacheItem itemAdded(BaseCache.CacheItem item)

this item is just added to the cache

覆盖：

类 MultiLruCache 中的 itemAdded

参数：

item - CacheItem that was created

返回：

a overflow item; may be null Cache bucket is already synchronized by the caller

itemRefreshed

protected void itemRefreshed(BaseCache.CacheItem item,
                             int oldSize)

item value has been refreshed

覆盖：

类 MultiLruCache 中的 itemRefreshed

参数：

item - CacheItem that was refreshed

oldSize - size of the previous value that was refreshed Cache bucket is already synchronized by the caller

itemRemoved

protected void itemRemoved(BaseCache.CacheItem item)

item value has been removed from the cache

覆盖：

类 MultiLruCache 中的 itemRemoved

参数：

item - CacheItem that was just removed Cache bucket is already synchronized by the caller

isThresholdReached

protected boolean isThresholdReached()

has cache reached its threshold

覆盖：

类 BaseCache 中的 isThresholdReached

返回：

true when the cache reached its threshold

incrementCurrentSize

protected final void incrementCurrentSize(int size)

synchronized counter updates

decrementCurrentSize

protected final void decrementCurrentSize(int size)

getStatByName

public Object getStatByName(String key)

get the desired statistic counter

指定者：

接口 Cache 中的 getStatByName

覆盖：

类 MultiLruCache 中的 getStatByName

参数：

key - to corresponding stat

返回：

an Object corresponding to the stat See also: Constant.java for the key

getStats

public Map getStats()

从类 MultiLruCache 复制的描述

get the stats snapshot

指定者：

接口 Cache 中的 getStats

覆盖：

类 MultiLruCache 中的 getStats

返回：

a Map of stats See also: Constant.java for the keys