org.sape.carbon.services.cache.mru
Interface MRUCacheDataLoader

All Superinterfaces:

FunctionalInterface

All Known Implementing Classes:

SqlBeanMapMRUDataLoader

public interface MRUCacheDataLoader

extends FunctionalInterface

The MRUCacheDataLoader is the interface implemented by Objects that interface with the backing data store of an MRU cache.

Copyright 2002 Sapient

Since:

carbon 1.0

Version:

$Revision: 1.7 $($Author: dvoet $ / $Date: 2003/05/05 21:21:07 $)

Author:

Douglas Voet, March 2002

Method Summary

Object

loadDatum(Object key) Loads a single datum from the backing data store and returns it.

Method Detail

loadDatum

public Object loadDatum(Object key)
                 throws CacheLoadException

Loads a single datum from the backing data store and returns it. This method is called from the get method of MRUCache when the requested datum is not in the cache or has expired.

Parameters:

key - an object providing all information necessary to locate a datum

Returns:

the data object represented by the key parameter

Throws:

CacheLoadException - indicates an error loading the data