Portal Custom Event

Question

Hi,
I wrote a Custome Event class and a Listner to support my Event. They
compile fine as I extended com.bea.p13n.events.Event and implemented
EventListener. However, from the docs
(http://edocs.bea.com/wlp/docs40/events/custmevt.htm), I am not sure
where to drop my custom Event and Listner class so that they can be
used from my portal within a portlet.
Should I place the classes inside a particular directory of the Portal
product? Should I add them to the Event and Listener JARs? Any help is
appreciated.
Thanks in advance.
-n

Answer 1

Hello,
The problem appears to be that you are trying to determine if the portlet was targeted and to send events in preRender()-- this should be done in your backing file's handlePostbackData() method. Some of the earlier links and examples on this discussion thread mixed up "campaign events" with "interportlet events"-- they are two different things. The information about inter-portlet events is located at http://edocs.bea.com/wlp/docs81/ipcguide/overview.html .
Interportlet events can only be sent during the handlePostbackData() backing file lifecycle phase, or when handling another incoming event. If an event is sent during preRender() it may not be delivered to any other portlets, and in later versions of WLP it will actually result in an error being logged.
So your backing file should probably look something like this:
import com.bea.netuix.servlets.controls.content.backing.AbstractJspBacking;
import com.bea.netuix.servlets.controls.portlet.backing.PortletBackingContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
* Sample backing file for sending an event when the portlet
* is clicked.
public class SampleBacking extends AbstractJspBacking
public boolean handlePostbackData(HttpServletRequest request,
HttpServletResponse response)
// Determine if this request originated due to an action
// on our portlet
if(isRequestTargeted(request))
PortletBackingContext context = PortletBackingContext.getPortletBackingContext(request);
context.fireCustomEvent("portletClicked", "my portlet was clicked");
return false;
}