NullPointerException is thrown when eventProducer attribute is added to <a4j:push> component.
Issue
-
NullPointerException is thrown when eventProducer attribute is added to <a4j:push> component. When running on the server it produces the following exception:
SEVERE [viewhandler] Error Rendering View[/pages/push.xhtml] java.lang.NullPointerException at org.ajax4jsf.component.UIPush.getListener(UIPush.java:64) at org.ajax4jsf.component.UIPush.encodeBegin(UIPush.java:57) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928) at javax.faces.render.Renderer.encodeChildren(Renderer.java:148) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) ...
Environment
- JBoss Enterprise Application Platform (EAP) 5
- RichFaces
-
Code that appears to trigger the issue, If the attribute eventProducer="#{dataBean.addListener}" is removed, the page runs correctly:
<h:form id="dataForm"> <a4j:push enabled="#{dataBean.enabled}" interval="2000" timeout="3000" id="push" eventProducer="#{dataBean.addListener}" limitToList="true" reRender="push, tempResults, start, stop" data="#{dataBean.values}"/> </h:form>
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.
