er.extensions.foundation

Class ERXRemoteNotificationCenter

java.lang.Object

com.webobjects.foundation.NSNotificationCenter

er.extensions.foundation.ERXRemoteNotificationCenter

Direct Known Subclasses:

ERJGroupsNotificationCenter

public abstract class ERXRemoteNotificationCenter
extends com.webobjects.foundation.NSNotificationCenter

NSNotificationCenter that can post simple notifications to other applications. Currently just posts the name, no object and the userInfo as a dictionary of strings. You must specifically register observers and post notifications here, not at NSNotificationCenter.defaultCenter().

If you don't link ERJGroupsSynchronizer, it will create a simple implementation, which posts via multicast - and is thus not really reliable and can't handle larger useInfo dict (of which keys and values must be strings). Also, you need to explicitely send the notification locally if you want to receive it in the sending application.

Author:

ak

Properties

Name	Description
er.extensions.ERXRemoteNotificationCenter.localBindAddress	the local address to bind to
er.extensions.ERXRemoteNotificationCenter.group	the multicast address to send to (230.0.0.1)
er.extensions.ERXRemoteNotificationCenter.port	the multicast port to send to (9754)
er.extensions.ERXRemoteNotificationCenter.maxPacketSize	the maximum multicast packet size (1024)
er.extensions.ERXRemoteNotificationCenter.identifier	the unique identifier for this host (autogenerated by default)

Field Summary

Fields inherited from class com.webobjects.foundation.NSNotificationCenter

_CLASS

Constructor Summary

Constructors

Constructor and Description
ERXRemoteNotificationCenter()

Method Summary

Modifier and Type	Method and Description
static ERXRemoteNotificationCenter	defaultCenter()
void	postLocalNotification(com.webobjects.foundation.NSNotification notification) Post a notification to the local app only.
void	postNotification(com.webobjects.foundation.NSNotification notification) Overridden to call postRemoteNotification(NSNotification).
protected abstract void	postRemoteNotification(com.webobjects.foundation.NSNotification notification) Post a notification to the remote listeners.
static void	setDefaultCenter(ERXRemoteNotificationCenter center) Set the default center

Methods inherited from class com.webobjects.foundation.NSNotificationCenter

_getEntry, addObserver, addOmniscientObserver, postNotification, postNotification, removeObserver, removeObserver, removeOmniscientObserver, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXRemoteNotificationCenter

public ERXRemoteNotificationCenter()

Method Detail

defaultCenter

public static ERXRemoteNotificationCenter defaultCenter()

setDefaultCenter

public static void setDefaultCenter(ERXRemoteNotificationCenter center)

Set the default center

Parameters:

center - the notification center to use as default

postLocalNotification

public void postLocalNotification(com.webobjects.foundation.NSNotification notification)

Post a notification to the local app only.

Parameters:

notification - the notification

postRemoteNotification

protected abstract void postRemoteNotification(com.webobjects.foundation.NSNotification notification)

Post a notification to the remote listeners.

Parameters:

notification - the notification

postNotification

public void postNotification(com.webobjects.foundation.NSNotification notification)

Overridden to call postRemoteNotification(NSNotification).

Overrides:

postNotification in class com.webobjects.foundation.NSNotificationCenter