[Apache Avalon Wiki] Updated: AspectsAndHandlers

[si...@avalon.apache.org]

   Date: 2004-03-06T13:16:47
   Editor: 81.170.128.235 <>
   Wiki: Apache Avalon Wiki
   Page: AspectsAndHandlers
   URL: http://wiki.apache.org/avalon/AspectsAndHandlers

   Less magic!

Change Log:

------------------------------------------------------------------------------
@@ -79,7 +79,8 @@
     String[] getHandlers ();
 
     void   registerEventListener (Class eventInterface, Object listener);
-    Object registerEventProducer (Class eventInterface);
+    void   unregisterEventListener (Class eventInterface, Object listener);
+    Iterator getEventListeners (Class eventInterface);
 }
 }}}
 
@@ -88,7 +89,7 @@
 
 === Events ===
 
-Events are defined via multicast interfaces. For example:
+Events are defined via interfaces. For example:
 
 {{{
 interface HandlerEvents {
@@ -105,20 +106,20 @@
 }}}
 
 The class will then have the appropriate methods called. A class
-wishing to produce events will create an event producer:
+wishing to produce events will get an Iterator over all listeners
+of a certain type:
 
 {{{
-HandlerEvents handlerEvents = 
-    (HandlerEvents) Kernel.registerEventProducer( HandlerEvents.class );
+Iterator iter = Kernel.getEventListeners( HandlerEvents.class );
 }}}
 
-The class can then send events by calling methods in the interface:
+The class can then send events by:
 
 {{{
-    handlerEvents.handlerAdded("myHandler", handler);
+while (iter.hasNext ()) {
+    ((HandlerEvents) iter.next()).handlerAdded("myHandler", handler);
+}
 }}}
-
-This will be a "multicast method".
 
 === The Aspect Interface ===
 

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