IPC Between Two ADF Portlets on Same Page using Events Failure

Question

Considering that a full page submit is required for the passing of parameters to work properly, I am trying to use IPC Events to pass a parameter from one ADF Portlet to another. There are no good examples out there, but I am trying to use what is out there in many different generic forms to make this happen with no success.
One portlet contains an ADF Table with a select column, I have a BackingBean to process the choosing of a row and that value is being retrieved and I am calling the set event.
public void selectPatient(ActionEvent e) {
FacesCtrlHierNodeBinding node = (FacesCtrlHierNodeBinding) tblPatients.getSelectedRowData();
String username = node.getAttribute(0).toString();
System.out.println("Selected Patient: " + username);
ActionResponse response = (ActionResponse)FacesContext.getCurrentInstance().getExternalContext().getResponse();
response.setEvent("selectPatientResult", username);
I then have a second portlet that is supposed to retrieve the value being passed from within the portlet class and then the second ADF portlet is supposed to display. I will eventually do more work with the value, but I am just trying to get the events to work properly first. Here is the code within the receiving portlet class:
public class drugallergies extends ADFBridgePortlet {
@ProcessEvent(name="selectPatientResult")
public void processSelectPatientEvent(EventRequest request, EventResponse eventresponse) throws PortletException, IOException {
Event event = request.getEvent();
String username = (String)event.getValue();
System.out.println("Selected Patient: " + username);
eventresponse.setRenderParameter("patient", username);
I have also made sure that I have put the following within my web.xml file for the application so that the events are being passed as portlet events and not faces events. I am still fairly new to ADF, but not to portals or portlets, which is why I am going this route.
<context-param>
<description>Allows for fired events to go to the portlet and not to the faces layer</description>
<param-name>javax.portlet.faces.autoDispatchEvents</param-name>
<param-value>false</param-value>
</context-param>
I am never seeing the receiving event get processed, meaning that I never see the println get processed with the receiving value. Please help because there are no examples out in the world for going this route. There are examples, but they require you to create an ADF application first and then convert the application to a portlet. I am using the Portlet Creation wizard within JDeveloper but creating ADF based pages for the Views modes.

Answer 1

Wait... You have to make a distinct difference between portlet events and contextual events in ADF.
Contextual events in ADF can be converted to portlet events.
If the full refresh of a portlet is an issue for you then even contextual events will not solve your problem.
Regardless the use of parameters or events, portlets do not support partial page rendering or ajax. In order for a parameter to pass or an event to be triggered, it need to have a reference to the ActionResponse or RequestResponse. If they don't have the proper reference they will not be able to trigger the event.
In the case you are talking about, the selection of a record, this won't be able to trigger an event because the selectionModel will be triggered by a partial submit.
The only work around for this problem is by adding a "select" button that will do a full submit.
This is not a limitation of ADF, it is a limitation of the portlet standar because the standard itself does not have anything that supports partial page rendering or ajax...