Set parameters from event

Question

I need set render parameters from event. From backing file cant find how set render paramters.

Answer 1

Hello,
I assume you are using JSR168 portlets and trying to set the render parameters when you receive an event? If so, you can't do that from the backing file; you will need to handle the event in your portlet instead of a backing file. For example, the following code would go in your portlet's java source:
import javax.portlet.ActionResponse;
import javax.portlet.ActionRequest;
import com.bea.netuix.events.Event;
public class JavaPortlet extends GenericPortlet
// This method will receive the event. It can have any name but must
// have this signature
public void handleEvent(ActionRequest request, ActionResponse response,
Event event)
// Event handling code goes here
// To set a render parameter, make calls like this:
response.setRenderParameter("paramName", "paramValue");
Then, in your .portlet file instead of a tag for "invokeBackingFileMethod" use the tag "invokeJavaPortletMethod" and specify the name of the method to call, just like the "invokeBackingFileMethod" did.
Kevin