org.mmbase.cache

Interface CacheImplementationInterface<K,V>

All Superinterfaces:

Map<K,V>

All Known Implementing Classes:

LRUCache, LRUHashtable, MultilevelCacheHandler, OSCacheImplementation

public interface CacheImplementationInterface<K,V>
extends Map<K,V>

Classes which can be used as a cache implementation need to implement this interface. An implementation of this interface has to be thread-safe to guarantee correctness.

Since:

MMBase-1.8

Version:

$Id$

Author:

Michiel Meeuwissen

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
void	config(Map<String,String> configuration) Configure the implementation with the given configuration values
int	getCount(K key) Returns the hit-count on a certain key (if implementable, -1 otherwise).
Object	getLock() The cache implementation must be somehow thread-safe.
int	maxSize() Gets the (maximal) size of the cache (if implementable)
void	setMaxSize(int size) Sets the (maximal) size of the cache (if implementable).

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Method Detail

setMaxSize

void setMaxSize(int size)

Sets the (maximal) size of the cache (if implementable).

maxSize

int maxSize()

Gets the (maximal) size of the cache (if implementable)

getCount

int getCount(K key)

Returns the hit-count on a certain key (if implementable, -1 otherwise).

config

void config(Map<String,String> configuration)

Configure the implementation with the given configuration values

getLock

Object getLock()

The cache implementation must be somehow thread-safe. This method should return the object on which to synchronize, e.g. when looping over entrySet.

Since:

MMBase-1.8.6