Package org.red5.cache.impl

Class CacheImpl

java.lang.Object

org.red5.cache.impl.CacheImpl

All Implemented Interfaces:

ICacheStore, Aware, ApplicationContextAware

public class CacheImpl
extends Object
implements ICacheStore, ApplicationContextAware

Provides an implementation of an object cache.

Author:

The Red5 Project, Paul Gregoire ([email protected])

Field Summary

Fields

Modifier and Type	Field	Description
private static ApplicationContext	applicationContext
private static final Map<String,SoftReference<? extends ICacheable>>	CACHE
private static AtomicLong	cacheHit
private static AtomicLong	cacheMiss
private static int	capacity
private static CacheImpl	instance
protected static org.slf4j.Logger	log
private static Map<String,Integer>	registry

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CacheImpl()	This constructor helps to ensure that we are singleton.

Method Summary

Modifier and Type	Method	Description
void	destroy()	Allows for cleanup of a cache implementation.
ICacheable	get(String name)	Return a cached object with the given name.
static ApplicationContext	getApplicationContext()	Getter for property 'applicationContext'.
static long	getCacheHit()	Getter for property 'cacheHit'.
static long	getCacheMiss()	Getter for property 'cacheMiss'.
static CacheImpl	getInstance()	Returns the instance of this class.
Iterator<String>	getObjectNames()	Return iterator over the names of all already loaded objects in the storage.
Iterator<SoftReference<? extends ICacheable>>	getObjects()	Return iterator over the already loaded objects in the storage.
void	init()
boolean	offer(String name, Object obj)	Offer an object to the cache with an associated key.
boolean	offer(String key, org.apache.mina.core.buffer.IoBuffer obj)
void	put(String name, Object obj)	Puts an object in the cache with the associated key.
protected void	put(String name, ICacheable obj)
boolean	remove(String name)	Delete the cached object with the given name.
boolean	remove(ICacheable obj)	Delete the passed cached object.
void	setApplicationContext(ApplicationContext context)
void	setMaxEntries(int max)	Sets the maximum number of entries for the cache.

Methods inherited from class java.lang.Object

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

Field Details

log

protected static org.slf4j.Logger log

instance

private static CacheImpl instance

CACHE

private static final Map<String,SoftReference<? extends ICacheable>> CACHE

registry

private static Map<String,Integer> registry

capacity

private static int capacity

cacheHit

private static AtomicLong cacheHit

cacheMiss

private static AtomicLong cacheMiss

applicationContext

private static ApplicationContext applicationContext

Constructor Details

CacheImpl

private CacheImpl()

This constructor helps to ensure that we are singleton.

Method Details

setApplicationContext

public void setApplicationContext(ApplicationContext context)
                           throws BeansException

Specified by:

setApplicationContext in interface ApplicationContextAware

Throws:

BeansException

getApplicationContext

public static ApplicationContext getApplicationContext()

Getter for property 'applicationContext'.

Returns:

Value for property 'applicationContext'.

getInstance

public static CacheImpl getInstance()

Returns the instance of this class.

Returns:

instance of this class

init

public void init()

getObjectNames

public Iterator<String> getObjectNames()

Return iterator over the names of all already loaded objects in the storage.

Specified by:

getObjectNames in interface ICacheStore

Returns:

iterator over all objects names

getObjects

public Iterator<SoftReference<? extends ICacheable>> getObjects()

Return iterator over the already loaded objects in the storage.

Specified by:

getObjects in interface ICacheStore

Returns:

iterator over all objects

offer

public boolean offer(String key,
 org.apache.mina.core.buffer.IoBuffer obj)

offer

public boolean offer(String name,
 Object obj)

Offer an object to the cache with an associated key. If the named object exists in cache, it will not be accepted.

Specified by:

offer in interface ICacheStore

Parameters:

name - string name representing the object

obj - cacheable object

Returns:

true if accepted, false otherwise

put

public void put(String name,
 Object obj)

Puts an object in the cache with the associated key.

Specified by:

put in interface ICacheStore

Parameters:

name - string name representing the object

obj - cacheable object

put

protected void put(String name,
 ICacheable obj)

get

public ICacheable get(String name)

Return a cached object with the given name.

Specified by:

get in interface ICacheStore

Parameters:

name - the name of the object to return

Returns:

the object or null if no such object was found

remove

public boolean remove(ICacheable obj)

Delete the passed cached object.

Specified by:

remove in interface ICacheStore

Parameters:

obj - the object to delete

Returns:

true if was removed; false it wasn't in cache to begin with

remove

public boolean remove(String name)

Delete the cached object with the given name.

Specified by:

remove in interface ICacheStore

Parameters:

name - the name of the object to delete

Returns:

true if was removed; false it wasn't in cache to begin with

getCacheHit

public static long getCacheHit()

Getter for property 'cacheHit'.

Returns:

Value for property 'cacheHit'.

getCacheMiss

public static long getCacheMiss()

Getter for property 'cacheMiss'.

Returns:

Value for property 'cacheMiss'.

setMaxEntries

public void setMaxEntries(int max)

Sets the maximum number of entries for the cache.

Specified by:

setMaxEntries in interface ICacheStore

Parameters:

max - upper-limit of the cache

destroy

public void destroy()

Allows for cleanup of a cache implementation.

Specified by:

destroy in interface ICacheStore