cern.gp.nodes.cache

Class TimeLimitedCachingStrategy

java.lang.Object

cern.gp.nodes.cache.TimeLimitedCachingStrategy

All Implemented Interfaces:

CachingStrategy

public class TimeLimitedCachingStrategy
extends java.lang.Object
implements CachingStrategy

A caching strategy based on a given time. The objects are cached for a given fixed time that is given at construction time

Author:

Vito Baggiolini

Constructor Summary

Constructors

Constructor and Description
TimeLimitedCachingStrategy(int timeoutMillis) Constructs a new caching strategy based on the given time

Method Summary

Modifier and Type	Method and Description
void	invalidateCache() Invalidates the current cached value.
boolean	isCacheValid() Checks whether the cache is still valid.
void	validateCache() Validates the current cached value.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeLimitedCachingStrategy

public TimeLimitedCachingStrategy(int timeoutMillis)

Constructs a new caching strategy based on the given time

Parameters:

timeoutMillis - the timeout for the cache

Method Detail

isCacheValid

public boolean isCacheValid()

Description copied from interface: CachingStrategy

Checks whether the cache is still valid. If true is returned the cached value will be used. If false is returned the cached value will be discarded and the getter will be invoked to get a new value.

Specified by:

isCacheValid in interface CachingStrategy

Returns:

true if the cache is still valid

validateCache

public void validateCache()

Description copied from interface: CachingStrategy

Validates the current cached value. This method is called to signal that the cached value has just been updated. The strategy should take this event into account for the implementation of isCached()

Specified by:

validateCache in interface CachingStrategy

invalidateCache

public void invalidateCache()

Description copied from interface: CachingStrategy

Invalidates the current cached value. This method is called to signal that the cached value should not be used anymore.

Specified by:

invalidateCache in interface CachingStrategy