com.hazelcast.map.impl

Class ExpirationTimeSetter

java.lang.Object

com.hazelcast.map.impl.ExpirationTimeSetter

public final class ExpirationTimeSetter
extends Object

Utility methods for setting TTL and max idle seconds.

Method Summary

Modifier and Type	Method and Description
static long	calculateExpirationWithDelay(long timeInMillis, long delayMillis, boolean backup) On backup partitions, this method delays key`s expiration.
static long	calculateMaxIdleMillis(MapConfig mapConfig)
static long	calculateTTLMillis(MapConfig mapConfig)
static long	getIdlenessStartTime(Record record) Returns last-access-time of an entry if it was accessed before, otherwise it returns creation-time of the entry.
static long	getLifeStartTime(Record record) Returns last-update-time of an entry if it was updated before, otherwise it returns creation-time of the entry.
static long	pickTTL(long ttlMillis, long ttlMillisFromConfig) Picks right TTL value.
static void	setExpirationTime(Record record, long maxIdleMillis) Sets expiration time if statistics are enabled.
static void	updateExpiryTime(Record record, long ttl, MapConfig mapConfig) Updates records TTL and expiration time.

Methods inherited from class java.lang.Object

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

Method Detail

setExpirationTime

public static void setExpirationTime(Record record,
                                     long maxIdleMillis)

Sets expiration time if statistics are enabled.

getIdlenessStartTime

public static long getIdlenessStartTime(Record record)

Returns last-access-time of an entry if it was accessed before, otherwise it returns creation-time of the entry. This calculation is required for max-idle-seconds expiration, because after first creation of an entry via IMap.put(K, V), the lastAccessTime is zero till the first access. Any subsequent get or update operation after first put will increase the lastAccessTime.

getLifeStartTime

public static long getLifeStartTime(Record record)

Returns last-update-time of an entry if it was updated before, otherwise it returns creation-time of the entry. This calculation is required for time-to-live expiration, because after first creation of an entry via IMap.put(K, V), the lastUpdateTime is zero till the first update.

pickTTL

public static long pickTTL(long ttlMillis,
                           long ttlMillisFromConfig)

Picks right TTL value.

Decides which TTL to set; TTL from config or put operation.

calculateMaxIdleMillis

public static long calculateMaxIdleMillis(MapConfig mapConfig)

calculateTTLMillis

public static long calculateTTLMillis(MapConfig mapConfig)

updateExpiryTime

public static void updateExpiryTime(Record record,
                                    long ttl,
                                    MapConfig mapConfig)

Updates records TTL and expiration time.

calculateExpirationWithDelay

public static long calculateExpirationWithDelay(long timeInMillis,
                                                long delayMillis,
                                                boolean backup)

On backup partitions, this method delays key`s expiration.