org.jboss.remoting.callback
Class NullCallbackStore

java.lang.Object
  org.jboss.remoting.callback.NullCallbackStore

All Implemented Interfaces:

java.io.Serializable, SerializableStore

public class NullCallbackStore
extends java.lang.Object
implements SerializableStore, java.io.Serializable

This implementation does nothing other than throw away persisted objects and throw exceptions. This is to be use when don't have a proper store or don't care about throwing away callbacks when starting to run out of memory.

Author:

Tom Elrod

See Also:

Serialized Form

Nested Class Summary

class

NullCallbackStore.FailedCallback

Constructor Summary

NullCallbackStore()

Method Summary

void	add(java.io.Serializable object) Persists the serializable object passed to the directory specified.
void	create() This is a no op method, but needed in order to be used as a service within JBoss AS.
void	destroy() This is a no op method, but needed in order to be used as a service within JBoss AS.
java.lang.Object	getNext() Will look through the files in the store directory for the oldest object serialized to disk, load it, delete the file, and return the deserialized object.
boolean	getPurgeOnShutdown() Returns if store will clean up persisted files when shutdown (destroy()).
void	purgeFiles()
void	setConfig(java.util.Map config) No op
void	setPurgeOnShutdown(boolean purgeOnShutdown) Sets if store should clean up persisted files when shutdown (destroy()).
int	size() Getst the number of objects stored and available.
void	start() No op
void	stop() No op

Methods inherited from class java.lang.Object

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

Constructor Detail

NullCallbackStore

public NullCallbackStore()

Method Detail

size

public int size()

Getst the number of objects stored and available.

Specified by:

size in interface SerializableStore

Returns:

getNext

public java.lang.Object getNext()
                         throws java.io.IOException

Will look through the files in the store directory for the oldest object serialized to disk, load it, delete the file, and return the deserialized object. Important to note that once this object is returned from this method, it is gone forever from this store and will not be able to retrieve it again without adding it back.

Specified by:

getNext in interface SerializableStore

Returns:

Throws:

java.io.IOException

add

public void add(java.io.Serializable object)
         throws java.io.IOException

Persists the serializable object passed to the directory specified. The file name will be the current time in milliseconds (vis System.currentTimeMillis()) with the specified suffix. This object can later be retrieved using the getNext() method, but objects will be returned in the order that they were added (FIFO).

Specified by:

add in interface SerializableStore

Parameters:

object -

Throws:

java.io.IOException

setConfig

public void setConfig(java.util.Map config)

No op

Specified by:

setConfig in interface SerializableStore

Parameters:

config -

start

public void start()
           throws java.lang.Exception

No op

Specified by:

start in interface SerializableStore

Throws:

java.lang.Exception

stop

public void stop()

No op

Specified by:

stop in interface SerializableStore

create

public void create()
            throws java.lang.Exception

This is a no op method, but needed in order to be used as a service within JBoss AS.

Specified by:

create in interface SerializableStore

Throws:

java.lang.Exception

destroy

public void destroy()

This is a no op method, but needed in order to be used as a service within JBoss AS.

Specified by:

destroy in interface SerializableStore

setPurgeOnShutdown

public void setPurgeOnShutdown(boolean purgeOnShutdown)

Sets if store should clean up persisted files when shutdown (destroy()).

Specified by:

setPurgeOnShutdown in interface SerializableStore

Parameters:

purgeOnShutdown -

getPurgeOnShutdown

public boolean getPurgeOnShutdown()

Returns if store will clean up persisted files when shutdown (destroy()).

Specified by:

getPurgeOnShutdown in interface SerializableStore

Returns:

purgeFiles

public void purgeFiles()

Specified by:

purgeFiles in interface SerializableStore