ResourceResponseImpl cannot be cast to ActionResponse

[Bernd Prager, geändert vor 11 Jahren.]

I am trying to implement an IPC call in the Primfaces "DataTable - Instant Row Selection" example and try to use code from the new jsf2-ipc-events-customers-portlet example.

The failing code is

	public void onRowSelect(SelectEvent event) {
		this.selectedItem = (TableItem) event.getObject();

		// IPC event
		logger.trace("fire IPC");
		javax.xml.namespace.QName qName = new QName("http://sandp.com", "ipc.software", "x");
		ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
		ActionResponse actionResponse = (ActionResponse) externalContext.getResponse();
		  	
		Serializable eventPayload = ((TableItem) event.getObject()).getName();
		actionResponse.setEvent(qName, eventPayload);
	}

I am using liferay-faces-bridge-impl-3.1.1-ga2.jar and primefaces-3.5.jar.

The error I am getting is

java.lang.ClassCastException: com.liferay.portlet.ResourceResponseImpl cannot be cast to javax.portlet.ActionResponse
	at com.sandp.dta.TableBean.onRowSelect(TableBean.java:68)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:328)
	... 151 more

Can anybody help?

Thank you.

[Neil Griffin, geändert vor 11 Jahren.]

Hi Bernd,

Unfortunately, Portlet 2.0 IPC (Events and Public Render Parameters) are incompatible with Ajax (javax.portlet.ResourceResponse). Instead, you they require a full postback (javax.portlet.ActionResponse). You would have to disable Ajax form submission in order to invoke IPC. I'm not sure if this is possible with the "rowSelect" event since that seems to be invoked via p:ajax.

Kind Regards,

Neil