org.ehcache.expiry

Class Duration

java.lang.Object

org.ehcache.expiry.Duration

public final class Duration
extends java.lang.Object

A unit of time in a given TimeUnit

Field Summary

Fields

Modifier and Type	Field and Description
static Duration	FOREVER Special Duration value that indicates an infinite amount of time.
static Duration	ZERO Special Duration value to represent a zero length duration

Constructor Summary

Constructors

Constructor and Description
Duration(long amount, java.util.concurrent.TimeUnit timeUnit) Construct a Duration instance

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
long	getAmount() Get the amount of getTimeUnit() this instance represents
java.util.concurrent.TimeUnit	getTimeUnit() Get the TimeUnit of this instance
int	hashCode()
boolean	isForever() Is this duration "forever" / infinite
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

FOREVER

public static final Duration FOREVER

Special Duration value that indicates an infinite amount of time. This constant should be used to express a lack of a concrete expiration time (ie. "eternal").

ZERO

public static final Duration ZERO

Special Duration value to represent a zero length duration

Constructor Detail

Duration

public Duration(long amount,
                java.util.concurrent.TimeUnit timeUnit)

Construct a Duration instance

Parameters:

amount - the amount of the given time unit

timeUnit - the time unit

Throws:

java.lang.IllegalArgumentException - if the given amount is less than zero

java.lang.NullPointerException - if the given time unit is null

Method Detail

getAmount

public long getAmount()

Get the amount of getTimeUnit() this instance represents

Returns:

the amount of this instance

Throws:

java.lang.IllegalStateException - if this instance is FOREVER

getTimeUnit

public java.util.concurrent.TimeUnit getTimeUnit()

Get the TimeUnit of this instance

Returns:

timeunit the TimeUnit of this instance

Throws:

java.lang.IllegalStateException - if this instance is FOREVER

isForever

public boolean isForever()

Is this duration "forever" / infinite

Returns:

true if this instance is the special value FOREVER

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object