edu.internet2.middleware.grouper.pspng

Class PspDatedCacheElement<V>

java.lang.Object

edu.internet2.middleware.grouper.pspng.PspDatedCacheElement<V>

Type Parameters:

V -

public class PspDatedCacheElement<V>
extends Object

This is a wrapper that stores a value along with the date it was cached. Theoretically, this is not needed if GrouperCache provided access to its Element cached items, but it seems easiest to create a thin wrapper so that GrouperCache's API is not made more complicated. This is used by the PspDatedCache so that cached values can be used only when they're "new enough" to satisfy the current request.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	storedTime_ms
protected V	value

Constructor Summary

Constructors

Constructor and Description
PspDatedCacheElement(V value)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Only compares CacheElements based on the value and not the date they were cached.
V	getValue()
V	getValueIfNewEnough(org.joda.time.DateTime oldestAllowedAge) Get the value if it is new enough
V	getValueIfNewEnough(long oldestAllowedAge_ms) Get the value if it is new enough.
int	hashCode()
boolean	isNewEnough(org.joda.time.DateTime oldestAllowedAge)
boolean	isNewEnough(long oldestAllowedAge_ms)
boolean	isOlderThan(org.joda.time.DateTime aDate)
boolean	isOlderThan(long time_ms)

Methods inherited from class java.lang.Object

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

Field Detail

storedTime_ms

protected long storedTime_ms

value

protected V value

Constructor Detail

PspDatedCacheElement

public PspDatedCacheElement(V value)

Method Detail

isNewEnough

public boolean isNewEnough(org.joda.time.DateTime oldestAllowedAge)

isNewEnough

public boolean isNewEnough(long oldestAllowedAge_ms)

isOlderThan

public boolean isOlderThan(org.joda.time.DateTime aDate)

isOlderThan

public boolean isOlderThan(long time_ms)

getValue

public V getValue()

getValueIfNewEnough

public V getValueIfNewEnough(org.joda.time.DateTime oldestAllowedAge)

Get the value if it is new enough

Parameters:

oldestAllowedAge - the date you require the object to be fresher than. Null means to bypass age checks and always return the object.

Returns:

the saved value, or null if the saved value was too old

getValueIfNewEnough

public V getValueIfNewEnough(long oldestAllowedAge_ms)

Get the value if it is new enough. otherwise null is returned

Parameters:

oldestAllowedAge_ms - the java epoch that you wish the object to be fresher than. <=0 means to bypass age checks and always return the object.

Returns:

the saved value, or null if the saved value was too old

equals

public boolean equals(Object o)

Only compares CacheElements based on the value and not the date they were cached.

Overrides:

equals in class Object

Parameters:

o -

Returns:

hashCode

public int hashCode()

Overrides:

hashCode in class Object