Class PassiveExpiringMap.ConstantTimeToLiveExpirationPolicy<K,V> 
java.lang.Object
org.apache.commons.collections4.map.PassiveExpiringMap.ConstantTimeToLiveExpirationPolicy<K,V> 
- Type Parameters:
- K- the type of the keys in the map
- V- the type of the values in the map
- All Implemented Interfaces:
- Serializable,- PassiveExpiringMap.ExpirationPolicy<K,- V> 
- Enclosing class:
- PassiveExpiringMap<K,- V> 
public static class PassiveExpiringMap.ConstantTimeToLiveExpirationPolicy<K,V> 
extends Object
implements PassiveExpiringMap.ExpirationPolicy<K,V> 
A 
ExpirationPolicy
 that returns an expiration time that is a
 constant about of time in the future from the current time.- Since:
- 4.0
- See Also:
- 
Constructor SummaryConstructorsConstructorDescriptionDefault constructor.ConstantTimeToLiveExpirationPolicy(long timeToLiveMillis) Constructs a policy with the given time-to-live constant measured in milliseconds.ConstantTimeToLiveExpirationPolicy(long timeToLive, TimeUnit timeUnit) Constructs a policy with the given time-to-live constant measured in the given time unit of measure.
- 
Method SummaryModifier and TypeMethodDescriptionlongexpirationTime(K key, V value) Determine the expiration time for the given key-value entry.
- 
Constructor Details- 
ConstantTimeToLiveExpirationPolicypublic ConstantTimeToLiveExpirationPolicy()Default constructor. Constructs a policy using a negative time-to-live value that results in entries never expiring.
- 
ConstantTimeToLiveExpirationPolicyConstructs a policy with the given time-to-live constant measured in milliseconds. A negative time-to-live value indicates entries never expire. A zero time-to-live value indicates entries expire (nearly) immediately.- Parameters:
- timeToLiveMillis- the constant amount of time (in milliseconds) an entry is available before it expires. A negative value results in entries that NEVER expire. A zero value results in entries that ALWAYS expire.
 
- 
ConstantTimeToLiveExpirationPolicyConstructs a policy with the given time-to-live constant measured in the given time unit of measure.- Parameters:
- timeToLive- the constant amount of time an entry is available before it expires. A negative value results in entries that NEVER expire. A zero value results in entries that ALWAYS expire.
- timeUnit- the unit of time for the- timeToLiveparameter, must not be null.
- Throws:
- NullPointerException- if the time unit is null.
 
 
- 
- 
Method Details- 
expirationTimeDetermine the expiration time for the given key-value entry.- Specified by:
- expirationTimein interface- PassiveExpiringMap.ExpirationPolicy<K,- V> 
- Parameters:
- key- the key for the entry (ignored).
- value- the value for the entry (ignored).
- Returns:
- if timeToLiveMillis≥ 0, an expiration time oftimeToLiveMillis+System.currentTimeMillis()is returned. Otherwise, -1 is returned indicating the entry never expires.
 
 
-