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

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

ERXRemoteNotificationCenter()

Method Summary

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 -

postLocalNotification

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

Post a notification to the local app only.

Parameters:

notification -

postRemoteNotification

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

Post a notification to the remote listeners.

Parameters:

notification -

postNotification

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

Overridden to call postRemoteNotification(NSNotification).

Overrides:

postNotification in class com.webobjects.foundation.NSNotificationCenter