Facelet tag parameter not recognized by PrimeFaces p:ajax

facelets, glassfish-3, jsf-2, primefaces

Solution

My colleague has just provided a patch to resolve this issue.

The current implementation of `AjaxBehaviorListenerImpl#processAjaxBehaviour` is as follows:

public void processAjaxBehavior(AjaxBehaviorEvent event) throws AbortProcessingException {
        FacesContext context = FacesContext.getCurrentInstance();
        final ELContext elContext = context.getELContext();

        try{
            listener.invoke(elContext, new Object[]{});
        } catch (MethodNotFoundException mnfe) {
            MethodExpression argListener = context.getApplication().getExpressionFactory().
                        createMethodExpression(elContext, listener.getExpressionString(), null, new Class[]{event.getClass()});

            argListener.invoke(elContext, new Object[]{event});
        }
    }

He proposes to tweak it like this:

import javax.faces.view.facelets.FaceletContext;

public void processAjaxBehavior(AjaxBehaviorEvent event) throws AbortProcessingException {
        FacesContext context = FacesContext.getCurrentInstance();
        final ELContext elContext = context.getELContext();

        try{
            listener.invoke(elContext, new Object[]{});
        } catch (MethodNotFoundException mnfe) {
            FaceletContext fc = (FaceletContext) context.getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);
            MethodExpression argListener = context.getApplication().getExpressionFactory().
                        createMethodExpression(fc, listener.getExpressionString(), null, new Class[]{ event.getClass() });

            argListener.invoke(elContext, new Object[]{ event });
        }
    }

Hopefully this will be approved by PF team.

Problem

I have a simple Facelet tag: ``` <ui:composition> <ui:insert /> </ui:composition> ``` which is used in order to avoid declaring multiple `c:set` tags. Let's say I registered it in the facelets taglib library with the name `view`, and use it like this: ``` <my:view bean="#{myController}"> <p:inputText value="#{bean.value}> <p:ajax event="blur" process="@this" listener="#{bean.handleValueChanged}" /> </p:inputText> </my:view> ``` The attribute `value` is perfectly resolved by `p:inputText`, but `p:ajax` throws this: ``` Target Unreachable, identifier 'bean' resolved to null javax.el.PropertyNotFoundException: Target Unreachable, identifier 'bean' resolved to null at com.sun.el.parser.AstValue.getTarget(AstValue.java:153) at com.sun.el.parser.AstValue.invoke(AstValue.java:237) at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302) at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:39) at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) at org.primefaces.component.behavior.ajax.AjaxBehaviorListenerImpl.processAjaxBehavior(AjaxBehaviorListenerImpl.java:47) ``` Is it a bug or expected behavior? Update: I just tried the same with f:ajax and it worked! Btw, the environment is as follows: Glassfish 3.1.2 PF 3.0, 3.2, 3.3 Update2: This issue with `RichFaces` is absolutely identical. Seems to be like a PrimeFaces bug (I'll post an issue on PF bug tracker today).

Original source