net.sf.swarmcache
Class HybridCache

java.lang.Object
  net.sf.swarmcache.HybridCache

All Implemented Interfaces:

LRUCacheListener, ObjectCache

public class HybridCache
extends java.lang.Object
implements ObjectCache, LRUCacheListener

A hybrid cache solution that uses a (presumably small) LRU cache backed by a larger AutoCache. This implementation aims to be a good trade-off between cache hit frequency and agressive memory usage.

Constructor Summary

HybridCache()

Method Summary

java.lang.Object	clear(java.io.Serializable key) Clears an object from the cache by key.
void	clearAll() Clears the entire cache.
java.lang.Object	get(java.io.Serializable key) Gets an object from the cache by key, or returns null if that object is not cached.
java.util.Set	getAllKeys() Get all items.
java.lang.String	getType() Gets the common name of the type of objects to cache.
void	objectRemoved(java.io.Serializable key, java.lang.Object value) Called when an object is automatically removed from the LRU cache.
void	put(java.io.Serializable key, java.lang.Object object) Adds an object to the cache.
void	setSize(int newSize) Sets the size of the LRU cache.
void	setType(java.lang.String type) Sets the common name of the type of objects to cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

HybridCache

public HybridCache()

Method Detail

setSize

public void setSize(int newSize)

Sets the size of the LRU cache. Note: this clears the LRU cache!

getType

public java.lang.String getType()

Description copied from interface: ObjectCache

Gets the common name of the type of objects to cache.

Specified by:

getType in interface ObjectCache

setType

public void setType(java.lang.String type)

Description copied from interface: ObjectCache

Sets the common name of the type of objects to cache.

Specified by:

setType in interface ObjectCache

objectRemoved

public void objectRemoved(java.io.Serializable key,
                          java.lang.Object value)

Called when an object is automatically removed from the LRU cache.

Specified by:

objectRemoved in interface LRUCacheListener

put

public void put(java.io.Serializable key,
                java.lang.Object object)

Description copied from interface: ObjectCache

Adds an object to the cache.

Specified by:

put in interface ObjectCache

get

public java.lang.Object get(java.io.Serializable key)

Description copied from interface: ObjectCache

Gets an object from the cache by key, or returns null if that object is not cached.

Specified by:

get in interface ObjectCache

clear

public java.lang.Object clear(java.io.Serializable key)

Description copied from interface: ObjectCache

Clears an object from the cache by key.

Specified by:

clear in interface ObjectCache

clearAll

public void clearAll()

Description copied from interface: ObjectCache

Clears the entire cache.

Specified by:

clearAll in interface ObjectCache

getAllKeys

public java.util.Set getAllKeys()

Description copied from interface: ObjectCache

Get all items.

Specified by:

getAllKeys in interface ObjectCache