org.exoplatform.commons.cache.future

Interface Loader<K,V,C>

Type Parameters:

K - the key type parameter

V - the value type parameter

C - the context type parameter

public interface Loader<K,V,C>

The loader interface is used by the future cache to retrieves the value from the key when it does not exist.

Version:

$Revision$

Author:

Julien Viet

Method Summary

Methods

Modifier and Type	Method and Description
V	retrieve(C context, K key) Retrieves the value from the key within the specified context.

Method Detail

retrieve

V retrieve(C context,
         K key)
           throws Exception

Retrieves the value from the key within the specified context. If the resource is not found then the value null must be returned.

Parameters:

context - the context

key - the key

Returns:

the value

Throws:

Exception - any exception that would prevent the value to be loaded