Package org.apache.xmlgraphics.image.loader.cache

Class ImageCacheStatistics

java.lang.Object

org.apache.xmlgraphics.image.loader.cache.ImageCacheStatistics

All Implemented Interfaces:

EventListener, ImageCacheListener

public class ImageCacheStatistics
extends Object
implements ImageCacheListener

Convenience class that gathers statistical information about the image cache.

Constructor Summary

Constructors

Constructor	Description
ImageCacheStatistics(boolean detailed)	Main constructor.

Method Summary

Modifier and Type	Method	Description
void	cacheHitImage(ImageKey key)	An Image was found in the cache
void	cacheHitImageInfo(String uri)	An ImageInfo was found in the cache
void	cacheMissImage(ImageKey key)	An Image was not in the cache
void	cacheMissImageInfo(String uri)	An ImageInfo was not in the cache
Map	getImageCacheHitMap()	Returns a Map<ImageKey, Integer> with the number of cache hits.
int	getImageCacheHits()	Returns the number of cache hits for Image instances.
int	getImageCacheMisses()	Returns the number of cache misses for Image instances.
Map	getImageCacheMissMap()	Returns a Map<ImageKey, Integer> with the number of cache misses.
int	getImageInfoCacheHits()	Returns the number of cache hits for ImageInfo instances.
int	getImageInfoCacheMisses()	Returns the number of cache misses for ImageInfo instances.
int	getInvalidHits()	Returns the number of times an invalid URI is tried.
void	invalidHit(String uri)	An URi previously identified as invalid was requested again
void	reset()	Reset the gathered statistics information.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageCacheStatistics

public ImageCacheStatistics(boolean detailed)

Main constructor.

Parameters:

detailed - true if the cache hits/misses for each Image instance should be recorded.

Method Detail

reset

public void reset()

Reset the gathered statistics information.

invalidHit

public void invalidHit(String uri)

An URi previously identified as invalid was requested again

Specified by:

invalidHit in interface ImageCacheListener

Parameters:

uri - the invalid URI

cacheHitImageInfo

public void cacheHitImageInfo(String uri)

An ImageInfo was found in the cache

Specified by:

cacheHitImageInfo in interface ImageCacheListener

Parameters:

uri - the image's URI

cacheMissImageInfo

public void cacheMissImageInfo(String uri)

An ImageInfo was not in the cache

Specified by:

cacheMissImageInfo in interface ImageCacheListener

Parameters:

uri - the image's URI

cacheHitImage

public void cacheHitImage(ImageKey key)

An Image was found in the cache

Specified by:

cacheHitImage in interface ImageCacheListener

Parameters:

key - the image key

cacheMissImage

public void cacheMissImage(ImageKey key)

An Image was not in the cache

Specified by:

cacheMissImage in interface ImageCacheListener

Parameters:

key - the image key

getInvalidHits

public int getInvalidHits()

Returns the number of times an invalid URI is tried.

Returns:

the number of times an invalid URI is tried.

getImageInfoCacheHits

public int getImageInfoCacheHits()

Returns the number of cache hits for ImageInfo instances.

Returns:

the number of cache hits for ImageInfo instances.

getImageInfoCacheMisses

public int getImageInfoCacheMisses()

Returns the number of cache misses for ImageInfo instances.

Returns:

the number of cache misses for ImageInfo instances.

getImageCacheHits

public int getImageCacheHits()

Returns the number of cache hits for Image instances.

Returns:

the number of cache hits for Image instances.

getImageCacheMisses

public int getImageCacheMisses()

Returns the number of cache misses for Image instances.

Returns:

the number of cache misses for Image instances.

getImageCacheHitMap

public Map getImageCacheHitMap()

Returns a Map<ImageKey, Integer> with the number of cache hits.

Returns:

a Map<ImageKey, Integer> with the number of cache hits

getImageCacheMissMap

public Map getImageCacheMissMap()

Returns a Map<ImageKey, Integer> with the number of cache misses.

Returns:

a Map<ImageKey, Integer> with the number of cache misses