org.castor.cache.hashbelt.reaper

Class RefreshingReaper

Implemented Interfaces:
Reaper

public abstract class RefreshingReaper
extends AbstractReaper

Calls a refresh method on each object in the container; it reinserts any returned object to the front of the expiration system. Useful for any object that needs to be periodically refreshed from source; you are free to return the same object that was called or to replace it with a refreshed version of that object.

Note that you must supply the implementation of the refresh method.

Version:
$Revision: 6230 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $
Author:
Gregory Block
Since:
1.0

Method Summary

void
handleExpiredContainer(Container expiredContainer)
protected abstract Object
refresh(Object objectToBeRefreshed)
Function called to attempt to refresh the object.

Methods inherited from class org.castor.cache.hashbelt.reaper.AbstractReaper

getCache, setCache

Method Details

handleExpiredContainer

public final void handleExpiredContainer(Container expiredContainer)
Specified by:
handleExpiredContainer in interface Reaper

refresh

protected abstract Object refresh(Object objectToBeRefreshed)
Function called to attempt to refresh the object. If refresh was successful, return the refreshed object; if not, return null.
Parameters:
objectToBeRefreshed - The object to be refreshed.
Returns:
The refreshed object, or null if the object could not be refreshed.

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