Package org.opencms.util

Class CmsExpiringValue<T>

java.lang.Object

org.opencms.util.CmsExpiringValue<T>

Type Parameters:

T - the type of the cached value

public class CmsExpiringValue<T>
extends Object

Simple utility class for caching a single value with a given cache expiration time.

If the time between the last write operation and a read operation is longer than the expiration time, null will be returned from the read operation.

Constructor Summary

Constructors

Constructor	Description
CmsExpiringValue(long expirationTime)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
T	get()	Gets the cached value.
void	set(T value)	Sets the cached value.

Methods inherited from class java.lang.Object

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

Constructor Details

CmsExpiringValue

public CmsExpiringValue(long expirationTime)

Creates a new instance.

Parameters:

expirationTime - the expiration time in milliseconds

Method Details

get

public T get()

Gets the cached value.

Returns null if the last update was longer ago than the expiration time.

Returns:

the cached value

set

public void set(T value)

Sets the cached value.

Parameters:

value - the cached value