MUM.data
Interface ICacheManager

All Superinterfaces:

IMultimediaService

public interface ICacheManager

extends IMultimediaService

Title: MUM * Copyright: Copyright (c) 2004 * Date: May 2004 * Description: Mobile agent based Ubiquitous multimedia Middleware * Package: MUM.repository.proxy.cache contains all the classes needed for the implementation of caching enabled proxies * @author Luca Foschini * @version 1.0

Method Summary

ICacheWriter	getCacheWriter() Returns a cache writer to write the cache
void	init(java.io.PrintStream out, PlaceID placeID, IMUMBaseFacilities factory, IPresentationMetadataRepository distributedCachingEntryPoint, java.lang.Object[] parameters) Initializes the cache manager.
MUM.repository.proxy.cache.IMetaDataCache	isInCache(IMetadata metadata) Verifies if a presentation is stored in the local cache
MUM.repository.proxy.cache.IMetaDataCache	isInCacheNoHit(IMetadata metadata) Requires if the metadata is present into the local cache.
void	putInCache(MUM.repository.proxy.cache.IMetaDataCache metaDataCache) Put a new element in the list maintained for the singulare cache
void	putInCache(MUM.repository.proxy.cache.IMetaDataPrefixCache metaDataPrefixCache) Put a new element in the list maintained for video prefixes

Method Detail

init

public void init(java.io.PrintStream out,
                 PlaceID placeID,
                 IMUMBaseFacilities factory,
                 IPresentationMetadataRepository distributedCachingEntryPoint,
                 java.lang.Object[] parameters)
          throws InitializationException

Initializes the cache manager.

Throws:

InitializationException

putInCache

public void putInCache(MUM.repository.proxy.cache.IMetaDataCache metaDataCache)

Put a new element in the list maintained for the singulare cache

Parameters:

metaDataCache - the MetaDataCache maintained locally

putInCache

public void putInCache(MUM.repository.proxy.cache.IMetaDataPrefixCache metaDataPrefixCache)

Put a new element in the list maintained for video prefixes

isInCache

public MUM.repository.proxy.cache.IMetaDataCache isInCache(IMetadata metadata)

Verifies if a presentation is stored in the local cache

Parameters:

metadata - the metadata you want to save in the current cache

Returns:

the currespondent IMetaDataCache, null if it is not present

isInCacheNoHit

public MUM.repository.proxy.cache.IMetaDataCache isInCacheNoHit(IMetadata metadata)

Requires if the metadata is present into the local cache. NOTE!! This method has no side effects, i.e. it does not produce locally any cache hit...

Parameters:

metadata - the required metadata

Returns:

the currespondent IMetaDataCache, null if it is not present

getCacheWriter

public ICacheWriter getCacheWriter()

Returns a cache writer to write the cache