Package org.apache.activemq.memory

Interface Cache

All Known Implementing Classes:

CacheFilter, MapCache, UsageManagerCacheFilter

public interface Cache

Defines the interface used to cache messages.

Method Summary

Modifier and Type	Method	Description
void	close()	Lets a cache know it will not be used any further and that it can release acquired resources
Object	get(Object key)	Gets an object that was previously put into this object.
Object	put(Object key, Object value)	Puts an object into the cache.
Object	remove(Object key)	Removes an object from the cache.
int	size()	How big is the cache right now?

Method Details

get

Object get(Object key)

Gets an object that was previously put into this object.

Parameters:

key -

Returns:

null if the object was not previously put or if the object has expired out of the cache.

put

Object put(Object key,
 Object value)

Puts an object into the cache.

Parameters:

key -

value -

remove

Object remove(Object key)

Removes an object from the cache.

Parameters:

key -

Returns:

the object associated with the key if it was still in the cache.

close

void close()

Lets a cache know it will not be used any further and that it can release acquired resources

size

int size()

How big is the cache right now?

Returns:

the size.