org.kuali.student.common.util

Class EhCacheHelper

java.lang.Object

org.kuali.student.common.util.EhCacheHelper

public class EhCacheHelper
extends Object

Simplified api for enabling Service and DAO classes with EhCache.

Author:

garystruthers

Constructor Summary

Constructors

Constructor and Description
EhCacheHelper()
EhCacheHelper(String configurationFileName)

Method Summary

Methods

Modifier and Type	Method and Description
void	createCache(String cacheName) Creates a cache and adds it to the cache manager
void	evictAllCacheElements(String cacheName) Remove all elements from cache
void	evictCacheElement(String cacheName, String key) Removes 1 element from cache
net.sf.ehcache.Element	getCacheElement(String cacheName, String key) Gets Element, useful for calling Element methods like getHitCount()
long	getCacheElementHitCount(net.sf.ehcache.Element element) Gets how many times element has been accessed.
Serializable	getCacheElementValue(String cacheName, String key) Get the thing cached
String[]	getCacheNames()
void	saveOrUpdateCacheElement(String cacheName, String key, Object value) Like Hibernate's saveOrUpdate, this is used to create a new cache element and update existing element The cache knows if cache.put if creating or updating an element.

Methods inherited from class java.lang.Object

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

Constructor Detail

EhCacheHelper

public EhCacheHelper()

EhCacheHelper

public EhCacheHelper(String configurationFileName)

Method Detail

createCache

public void createCache(String cacheName)

Creates a cache and adds it to the cache manager

Parameters:

cacheName - you could name the cache with the classname that uses it.

saveOrUpdateCacheElement

public void saveOrUpdateCacheElement(String cacheName,
                            String key,
                            Object value)

Like Hibernate's saveOrUpdate, this is used to create a new cache element and update existing element The cache knows if cache.put if creating or updating an element.

Parameters:

cacheName -

key - must be unique, should be descriptive

value - the thing cached

getCacheElementValue

public Serializable getCacheElementValue(String cacheName,
                                String key)

Get the thing cached

Parameters:

cacheName -

key -

Returns:

a Serializable object Note, EhCache can support non-serializable object in memory only cache

getCacheElement

public net.sf.ehcache.Element getCacheElement(String cacheName,
                                     String key)

Gets Element, useful for calling Element methods like getHitCount()

Parameters:

cacheName -

key -

Returns:

evictCacheElement

public void evictCacheElement(String cacheName,
                     String key)

Removes 1 element from cache

Parameters:

cacheName -

key -

evictAllCacheElements

public void evictAllCacheElements(String cacheName)

Remove all elements from cache

Parameters:

cacheName -

getCacheElementHitCount

public long getCacheElementHitCount(net.sf.ehcache.Element element)

Gets how many times element has been accessed. Useful for testing and optimization

Parameters:

element -

Returns:

getCacheNames

public String[] getCacheNames()

Returns: