com.vignette.portal.cache
Class TimeToLiveStrategy

java.lang.Object
  |
  +--com.vignette.portal.cache.CacheStrategy
        |
        +--com.vignette.portal.cache.ActionBasedCacheStrategy
              |
              +--com.vignette.portal.cache.TimeBasedStrategy
                    |
                    +--com.vignette.portal.cache.TimeToLiveStrategy

All Implemented Interfaces:

Periodical

public class TimeToLiveStrategy

extends TimeBasedStrategy

Computes expiration time based when the entry was added to the cache.

Constructor Summary

TimeToLiveStrategy(CacheAction action, long defaultTimeout)
Creates a cache with specified timeout and with specified action logic.

TimeToLiveStrategy(long defaultTimeout)
Creates a cache with specified timeout and with default action logic.

Method Summary

void	onGet(Object key, Map properties) Someone is accessing key in the Cache.

Methods inherited from class com.vignette.portal.cache.TimeBasedStrategy

containsKey, getDefaultTimeout, getNeverExpireProperty, getOverrideTimeoutProperty, onAdd, onInvalidate, onInvalidateAll, onInvalidateAll, onPeriod, onPut, onPutAll, onRemove, onRemoveAll, onRemoveAll, updateExpirationTime

Methods inherited from class com.vignette.portal.cache.ActionBasedCacheStrategy

getCacheAction, setStore

Methods inherited from class com.vignette.portal.cache.CacheStrategy

getStore, onAddAll, onGetAll

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeToLiveStrategy

public TimeToLiveStrategy(long defaultTimeout)

Creates a cache with specified timeout and with default action logic.

Parameters:

defaultTimeout - the maximum time, in milliseconds, that objects are allowed in the cache.

See Also:

TimeBasedStrategy.TimeBasedStrategy(long)

TimeToLiveStrategy

public TimeToLiveStrategy(CacheAction action,
                          long defaultTimeout)

Creates a cache with specified timeout and with specified action logic.

Parameters:

action - the non-null action to invoke when the size of the cache is exceeded.

defaultTimeout - the maximum time, in milliseconds, that objects are allowed in the cache.

See Also:

TimeBasedStrategy.TimeBasedStrategy(CacheAction, long)

Method Detail

onGet

public void onGet(Object key,
                  Map properties)
           throws CacheException

Description copied from class: CacheStrategy

Someone is accessing key in the Cache.

Individual strategies can use the information in properties to override their creation-time parameters.

Overrides:

onGet in class CacheStrategy

Following copied from class: com.vignette.portal.cache.CacheStrategy

Parameters:

key - item being looked up

properties - possible overrides, can be null