com.kheops.util

Class KAbstractDataCache

java.lang.Object

com.kheops.util.KAbstractDataCache

Direct Known Subclasses:

KDiskDataCache, KMemoryDataCache

public abstract class KAbstractDataCache
extends java.lang.Object

An abstract class that defines member variables used to monitor a cache.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	currentSize The curent size (in bytes) of the cache.
protected long	hits The sucessfull retrieval data count.
protected long	maximumSize The maximum size (in bytes) of the cache, -1 if unlimited.
protected long	misses The number retrieval attemps.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	KAbstractDataCache(long maximumSize)

Method Summary

Modifier and Type	Method and Description
abstract void	export(KAbstractDataCache cache)
abstract long	getCount()
abstract long	getCount(java.lang.String partialKey)
long	getCurrentSize() Returns the current size of the cache.
abstract long	getCurrentSize(java.lang.String partialKey)
long	getHits() Returns the sucessfull retrieval data count.
long	getMaximumSize() Returns the maximum size of the cache.
long	getMisses() Returns the number retrieval attemps.
KDataCacheMonitoringInfo	getMonitoringInfo() Returns a KDataCacheMonitoringInfo object that defines monitoring information about this data cache.
KDataCacheMonitoringInfo	getMonitoringInfo(java.lang.String partialKey) Returns a KDataCacheMonitoringInfo object that defines monitoring information about this data cache.
abstract void	removeAll()
abstract void	removeMatching(java.lang.String partialKey)
abstract void	store(java.lang.String key, byte[] data)

Methods inherited from class java.lang.Object

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

Field Detail

currentSize

protected long currentSize

The curent size (in bytes) of the cache.

maximumSize

protected long maximumSize

The maximum size (in bytes) of the cache, -1 if unlimited.

hits

protected long hits

The sucessfull retrieval data count.

misses

protected long misses

The number retrieval attemps.

Constructor Detail

KAbstractDataCache

protected KAbstractDataCache(long maximumSize)

Method Detail

getCurrentSize

public long getCurrentSize()

Returns the current size of the cache.

Returns:

the current size of the cache.

getMaximumSize

public long getMaximumSize()

Returns the maximum size of the cache.

Returns:

the maximum size of the cache.

getHits

public long getHits()

Returns the sucessfull retrieval data count.

Returns:

the sucessfull retrieval data count.

getMisses

public long getMisses()

Returns the number retrieval attemps.

Returns:

the number retrieval attemps.

getMonitoringInfo

public KDataCacheMonitoringInfo getMonitoringInfo()

Returns a KDataCacheMonitoringInfo object that defines monitoring information about this data cache.

Returns:

a KDataCacheMonitoringInfo object.

getMonitoringInfo

public KDataCacheMonitoringInfo getMonitoringInfo(java.lang.String partialKey)

Returns a KDataCacheMonitoringInfo object that defines monitoring information about this data cache.

Returns:

a KDataCacheMonitoringInfo object.

getCount

public abstract long getCount()

getCount

public abstract long getCount(java.lang.String partialKey)

getCurrentSize

public abstract long getCurrentSize(java.lang.String partialKey)

store

public abstract void store(java.lang.String key,
                           byte[] data)
                    throws java.io.IOException

Throws:

java.io.IOException

export

public abstract void export(KAbstractDataCache cache)
                     throws java.io.IOException

Throws:

java.io.IOException

removeAll

public abstract void removeAll()

removeMatching

public abstract void removeMatching(java.lang.String partialKey)