org.ehcache.expiry

Class Duration

java.lang.Object

org.ehcache.expiry.Duration

public final class Duration
extends java.lang.Object

A time duration in a given TimeUnit.

Field Summary

Fields

Modifier and Type	Field and Description
static Duration	INFINITE The infinite Duration.
static Duration	ZERO The zero Duration.

Constructor Summary

Constructors

Constructor and Description
Duration(long length, java.util.concurrent.TimeUnit timeUnit) Instantiates a new Duration of the given length and TimeUnit.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
long	getLength() Gets the length of time this Duration represents.
java.util.concurrent.TimeUnit	getTimeUnit() Gets the TimeUnit of this Duration.
int	hashCode()
boolean	isInfinite() Indicates if this duration represents INFINITE or an infinite Duration.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

INFINITE

public static final Duration INFINITE

The infinite Duration.

This constant should be used to express a lack of a concrete expiration time (ie. "eternal").

ZERO

public static final Duration ZERO

The zero Duration.

Constructor Detail

Duration

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

Instantiates a new Duration of the given length and TimeUnit.

Parameters:

length - the duration length

timeUnit - the time unit

Throws:

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

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

Method Detail

getLength

public long getLength()

Gets the length of time this Duration represents.

Returns:

the length of this instance

Throws:

java.lang.IllegalStateException - if this instance is INFINITE

See Also:

getTimeUnit()

getTimeUnit

public java.util.concurrent.TimeUnit getTimeUnit()

Gets the TimeUnit of this Duration.

Returns:

the TimeUnit of this instance

Throws:

java.lang.IllegalStateException - if this instance is INFINITE

See Also:

getLength()

isInfinite

public boolean isInfinite()

Indicates if this duration represents INFINITE or an infinite Duration.

Returns:

true if this instance is the special Forever value

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