org.glassfish.hk2.utilities.cache

Interface Computable<K,V>

All Known Implementing Classes:

Cache, LRUHybridCache

public interface Computable<K,V>

Utility interface to capture generic computation of type V from type K. Used in Cache.

Author:

Jakub Podlesak (jakub.podlesak @ oracle.com)

Method Summary

Modifier and Type	Method and Description
V	compute(K key) Defines an expensive computation to retrieve value V from key K.

Method Detail

compute

V compute(K key)
   throws ComputationErrorException

Defines an expensive computation to retrieve value V from key K.

Parameters:

key - input data.

Returns:

output from the computation.

Throws:

ComputationErrorException - if the computation performed should be returned by the cache but should not be kept in the cache associated with the key