com.nutiteq.cache
Class CachingChain

java.lang.Object
  com.nutiteq.cache.CachingChain

All Implemented Interfaces:

Cache

public class CachingChain
extends java.lang.Object
implements Cache

Combines different caching levels to one cache.

Field Summary

Fields inherited from interface com.nutiteq.cache.Cache

CACHE_LEVEL_MEMORY, CACHE_LEVEL_NONE, CACHE_LEVEL_PERSISTENT

Constructor Summary

CachingChain(Cache[] cacheLevels)
Define caching chain with given cache levels.

Method Summary

void	cache(java.lang.String cacheKey, byte[] data, int cacheLevel) Cache given data
boolean	contains(java.lang.String cacheKey) Does this cache contain data for given cache key
boolean	contains(java.lang.String cacheKey, int cacheLevel) Does the specified cache level contain given cache key
void	deinitialize() Clean up cache resources and, if needed, write cache definition/index somewhere.
byte[]	get(java.lang.String cacheKey) Get cached data.
void	initialize() Initialize needed resources for cache.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachingChain

public CachingChain(Cache[] cacheLevels)

Define caching chain with given cache levels.

Parameters:

cacheLevels - cache levels to be used in this chain.

Method Detail

initialize

public void initialize()

Description copied from interface: Cache

Initialize needed resources for cache. For example read cache index.

Specified by:

initialize in interface Cache

deinitialize

public void deinitialize()

Description copied from interface: Cache

Clean up cache resources and, if needed, write cache definition/index somewhere.

Specified by:

deinitialize in interface Cache

get

public byte[] get(java.lang.String cacheKey)

Description copied from interface: Cache

Get cached data.

Specified by:

get in interface Cache

Parameters:

cacheKey - key that was used for data caching

Returns:

cached data

cache

public void cache(java.lang.String cacheKey,
                  byte[] data,
                  int cacheLevel)

Description copied from interface: Cache

Cache given data

Specified by:

cache in interface Cache

Parameters:

cacheKey - key for the cached data

data - data to be cached

cacheLevel - at which level this data needs to be cached (memory, rms, etc).

contains

public boolean contains(java.lang.String cacheKey)

Description copied from interface: Cache

Does this cache contain data for given cache key

Specified by:

contains in interface Cache

Parameters:

cacheKey - cache key checked

Returns:

if data for key present

contains

public boolean contains(java.lang.String cacheKey,
                        int cacheLevel)

Description copied from interface: Cache

Does the specified cache level contain given cache key

Specified by:

contains in interface Cache

Parameters:

cacheKey - cache key to be checked

cacheLevel - which cache levels to check

Returns:

if data for key present