Package com.google.appengine.api.memcache

Class Expiration

java.lang.Object

com.google.appengine.api.memcache.Expiration

public final class Expiration
extends Object

Expiration specifications on MemcacheService.putAll(Map , Expiration) and MemcacheService.put(Object, Object, Expiration) operations.

Expiration has resolution to one second, although a milliseconds factory constructor is provided for convenience.

Method Summary

Modifier and Type	Method	Description
static Expiration	byDeltaMillis(int milliDelay)	Creates an Expiration for some number of milliseconds into the future.
static Expiration	byDeltaSeconds(int secondsDelay)	Creates an Expiration for some number of seconds in the future.
boolean	equals(Object obj)
long	getMillisecondsValue()	Fetches the expiration date, in milliseconds-since-epoch.
int	getSecondsValue()	Fetches the expiration date, in seconds-since-epoch.
int	hashCode()
static Expiration	onDate(Date expirationTime)	Creates an expiration at specific date/time.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

onDate

public static Expiration onDate(Date expirationTime)

Creates an expiration at specific date/time.

Parameters:

expirationTime - date/time after which an item must be discarded from the cache.

Returns:

a new Expiration object representing the given Date.

byDeltaMillis

public static Expiration byDeltaMillis(int milliDelay)

Creates an Expiration for some number of milliseconds into the future.

Parameters:

milliDelay - amount of time, in milliseconds, after which an item must be discarded from the cache.

Returns:

a new Expiration representing the requested time.

byDeltaSeconds

public static Expiration byDeltaSeconds(int secondsDelay)

Creates an Expiration for some number of seconds in the future.

Parameters:

secondsDelay - number of seconds after which an item must be discarded.

Returns:

a new Expiration for the requested time.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getMillisecondsValue

public long getMillisecondsValue()

Fetches the expiration date, in milliseconds-since-epoch.

Returns:

timestamp of expiration, even if constructed via a delta rather than fixed date.

getSecondsValue

public int getSecondsValue()

Fetches the expiration date, in seconds-since-epoch.

Returns:

timestamp of expiration, even if constructed via a delta rather than fixed date.