net.ontopia.utils
Class CachedDecider<T>

java.lang.Object
  net.ontopia.utils.CachedDecider<T>

All Implemented Interfaces:

CachedIF, DeciderIF<T>

public class CachedDecider<T>
extends java.lang.Object
implements DeciderIF<T>, CachedIF

INTERNAL: Decider that maintains a cache of decisions made on a set of objects. It works with any implementation of DeciderIF.

The cache is first checked to see if a decision has already been made. Otherwise a new decision is evaluated and the cache is updated.

Field Summary

protected java.util.Map<T,java.lang.Boolean>	cache
protected DeciderIF<T>	decider

Constructor Summary

CachedDecider(DeciderIF<T> decider)

Method Summary

DeciderIF<T>	getDecider() Gets the decider that being cached.
boolean	ok(T object) PUBLIC: Returns true if the object is accepted.
void	refresh() Refreshes the cache.
void	setDecider(DeciderIF<T> decider) Sets the decider that is to be cached.

Methods inherited from class java.lang.Object

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

Field Detail

decider

protected DeciderIF<T> decider

cache

protected java.util.Map<T,java.lang.Boolean> cache

Constructor Detail

CachedDecider

public CachedDecider(DeciderIF<T> decider)

Method Detail

getDecider

public DeciderIF<T> getDecider()

Gets the decider that being cached.

setDecider

public void setDecider(DeciderIF<T> decider)

Sets the decider that is to be cached.

ok

public boolean ok(T object)

Description copied from interface: DeciderIF

PUBLIC: Returns true if the object is accepted.

Specified by:

ok in interface DeciderIF<T>

refresh

public void refresh()

Description copied from interface: CachedIF

Refreshes the cache.

Specified by:

refresh in interface CachedIF