com.infoengine.object
Class ObjectCache

java.lang.Object
  com.infoengine.object.ObjectCache

public class ObjectCache

extends Object

Implementation of a single keyed generic cache of Java objects

Nested Class Summary

(package private) class

ObjectCache.CacheObject inner class used to store cached objects

Field Summary

private Hashtable	cache
private long	timeToLive

Constructor Summary

ObjectCache()
create a new ObjectCache with items that do not expire

ObjectCache(long timeToLive)
create a new ObjectCache with items that will expire after timeToLive milliseconds

Method Summary

Object	get(Object key) retrieve an object from the cache
void	put(Object key, Object object) insert an item into the cache, retrievable using key

Methods inherited from class java.lang.Object

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

Field Detail

cache

private Hashtable cache

timeToLive

private long timeToLive

Constructor Detail

ObjectCache

public ObjectCache()

create a new ObjectCache with items that do not expire

ObjectCache

public ObjectCache(long timeToLive)

create a new ObjectCache with items that will expire after timeToLive milliseconds

Method Detail

put

public void put(Object key,
                Object object)

insert an item into the cache, retrievable using key

Throws:

java.lang.NullPointerException - if key is null

get

public Object get(Object key)

retrieve an object from the cache