public void execute(Event<UIPortlet<S, C>> event) throws Exception {
UIPortlet<S, C> uiPortlet = event.getSource();
PortalRequestContext prcontext = (PortalRequestContext) event.getRequestContext();
// set the public render parameters from the request before creating the invocation
HttpServletRequest request = prcontext.getRequest();
setupPublicRenderParams(uiPortlet, request.getParameterMap());
// set the navigational state
String navState =
prcontext.getRequestParameter(ExoPortletInvocationContext.NAVIGATIONAL_STATE_PARAM_NAME);
if (navState != null) {
uiPortlet.setNavigationalState(ParametersStateString.create(navState));
}
//
ActionInvocation actionInvocation = uiPortlet.create(ActionInvocation.class, prcontext);
if (actionInvocation == null) {
return;
}
//
PortletInvocationResponse portletResponse = uiPortlet.invoke(actionInvocation);
// deal with potential portlet context modifications
ExoPortletInstanceContext instanceCtx =
(ExoPortletInstanceContext) actionInvocation.getInstanceContext();
if (instanceCtx.getModifiedContext() != null) {
StatefulPortletContext<C> updatedCtx =
(StatefulPortletContext<C>) instanceCtx.getModifiedContext();
C portletState = uiPortlet.getModifiedState(updatedCtx);
uiPortlet.update(portletState);
} else {
// todo: fix me as this shouldn't probably be done only for the WSRP case
PortletContext clonedContext = instanceCtx.getClonedContext();
if (clonedContext != null) {
C state = uiPortlet.getClonedState(clonedContext);
uiPortlet.update(state);
}
}
if (portletResponse instanceof UpdateNavigationalStateResponse) {
handleUpdateNavigationalStateResponse(
(UpdateNavigationalStateResponse) portletResponse, uiPortlet, prcontext);
} else if (portletResponse instanceof HTTPRedirectionResponse) {
handleRedirectionResponse(
(HTTPRedirectionResponse) portletResponse, prcontext.getResponse());
prcontext.setResponseComplete(true);
} else if (portletResponse instanceof ErrorResponse) {
handleErrorResponse((ErrorResponse) portletResponse);
} else if (portletResponse instanceof SecurityResponse) {
handleSecurityResponse((SecurityResponse) portletResponse);
} else {
throw new Exception(
"Unexpected response type ["
+ portletResponse
+ "]. Expected an UpdateNavigationResponse"
+ ", a HTTPRedirectionResponse or an ErrorResponse.");
}
}
/**
* This method is called when the javax.portlet.Event is supported by the current portlet stored
* in the Portlet Caontainer
*
* <p>The processEvent() method can also generates IPC events and hence the portal itself will
* call the ProcessEventsActionListener once again
*/
public static <S, C extends Serializable, I> List<javax.portlet.Event> processEvent(
UIPortlet<S, C> uiPortlet, javax.portlet.Event event) {
log.trace("Process Event: " + event.getName() + " for portlet: " + uiPortlet.getState());
try {
PortalRequestContext context =
(PortalRequestContext) WebuiRequestContext.getCurrentInstance();
//
EventInvocation eventInvocation = uiPortlet.create(EventInvocation.class, context);
//
eventInvocation.setName(event.getQName());
eventInvocation.setPayload(event.getValue());
//
PortletInvocationResponse piResponse = uiPortlet.invoke(eventInvocation);
//
ExoPortletInstanceContext instanceCtx =
(ExoPortletInstanceContext) eventInvocation.getInstanceContext();
if (instanceCtx.getModifiedContext() != null) {
StatefulPortletContext<C> updatedCtx =
(StatefulPortletContext<C>) instanceCtx.getModifiedContext();
C portletState = updatedCtx.getState();
uiPortlet.update(portletState);
}
// todo: handle the error response better than this.
if (!(piResponse instanceof UpdateNavigationalStateResponse)) {
if (piResponse instanceof ErrorResponse) {
ErrorResponse errorResponse = (ErrorResponse) piResponse;
throw (Exception) errorResponse.getCause();
} else {
throw new Exception(
"Unexpected response type ["
+ piResponse
+ "]. Expected a UpdateNavigationResponse or an ErrorResponse.");
}
}
UpdateNavigationalStateResponse navResponse = (UpdateNavigationalStateResponse) piResponse;
//
/*
* Update the portlet window state according to the action output
* information
*
* If the current node is displaying a usual layout page, also tells the
* page which portlet to render or not when the state is maximized
*/
WindowState state = new WindowState(getWindowStateOrDefault(navResponse));
setNextState(uiPortlet, state);
// update the portlet with the next mode to display
PortletMode mode = new PortletMode(getPortletModeOrDefault(navResponse));
setNextMode(uiPortlet, mode);
StateString navState = navResponse.getNavigationalState();
if (navState != null) {
uiPortlet.setNavigationalState(navResponse.getNavigationalState());
}
setupPublicRenderParams(uiPortlet, navResponse.getPublicNavigationalStateUpdates());
// TODO: (mwringe) add this to the UpdateNavigationStateResponse.Event class instead of here
class PortletEvent implements javax.portlet.Event {
QName qName;
Serializable value;
public PortletEvent(QName qName, Serializable value) {
this.qName = qName;
this.value = value;
}
public String getName() {
return qName.getLocalPart();
}
public QName getQName() {
return qName;
}
public Serializable getValue() {
return value;
}
}
List<UpdateNavigationalStateResponse.Event> nsEvents = navResponse.getEvents();
List<javax.portlet.Event> events = new ArrayList<javax.portlet.Event>(nsEvents.size());
if (nsEvents != null && !nsEvents.isEmpty()) {
for (UpdateNavigationalStateResponse.Event nsEvent : nsEvents) {
javax.portlet.Event portletEvent =
new PortletEvent(nsEvent.getName(), nsEvent.getPayload());
events.add(portletEvent);
}
}
return events;
} catch (Exception e) {
log.error("Problem while processesing event for the portlet: " + uiPortlet.getState(), e);
}
return null;
}
