com.amazonaws.event

Class ProgressListenerCallbackExecutor

java.lang.Object

com.amazonaws.event.ProgressListenerCallbackExecutor

public class ProgressListenerCallbackExecutor
extends java.lang.Object

This class wraps a ProgressListener object, and manages all its callback execution. Callbacks are executed sequentially in a separate single thread.

Constructor Summary

Constructors

Constructor and Description
ProgressListenerCallbackExecutor() Constructor.
ProgressListenerCallbackExecutor(ProgressListener listener) Constructor.

Method Summary

Modifier and Type	Method and Description
protected static java.util.concurrent.ExecutorService	getExecutorService()
protected ProgressListener	getListener()
void	progressChanged(ProgressEvent progressEvent)
static java.util.concurrent.Future<?>	progressChanged(ProgressListener listener, ProgressEvent progressEvent) Used to submit a task to publish a progress event to the given listener.
static ProgressListenerCallbackExecutor	wrapListener(ProgressListener listener)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProgressListenerCallbackExecutor

public ProgressListenerCallbackExecutor(ProgressListener listener)

Constructor.

Parameters:

listener - the progress listener.

ProgressListenerCallbackExecutor

public ProgressListenerCallbackExecutor()

Constructor.

Method Detail

progressChanged

public static java.util.concurrent.Future<?> progressChanged(ProgressListener listener,
                                                             ProgressEvent progressEvent)

Used to submit a task to publish a progress event to the given listener.

Parameters:

listener - the progress listener.

progressEvent - the process event.

Returns:

the future of the submitted task; or null if there is no listener.

progressChanged

public void progressChanged(ProgressEvent progressEvent)

Parameters:

progressEvent - the progress event.

getListener

protected ProgressListener getListener()

Returns:

the listener associated with the callback executor.

getExecutorService

protected static java.util.concurrent.ExecutorService getExecutorService()

Returns:

the executor service used for performing the callbacks.

wrapListener

public static ProgressListenerCallbackExecutor wrapListener(ProgressListener listener)

Parameters:

listener - the progress listener.

Returns:

a new ProgressListenerCallbackExecutor instance that wraps the specified ProgressListener if it is not null, otherwise directly returns null.