[jsr-314-open] Method signatures for event handlers

[Lincoln Baxter, III]

It would be nice if jsf made all these event signatures optional.

I know its a stumbling block for many users.

Perhaps the ability to inject those parameters with an annotation (or access
via facesContext.getCurrentSystemEvent() ... obviously just a short winded
concept. But the idea is to somehow provide optional access.)

Lincoln Baxter's Droid
http://ocpsoft.com
http://scrumshark.com
Keep it simple.

On Jan 21, 2010 10:19 PM, "Cay Horstmann" <cay at horstmann.com> wrote:

Consulting the specification for f:event (
http://java.sun.com/javaee/javaserverfaces/2.0/docs/pdldocs/facelets/f/event.html),
I find that the signature is required to match public void
listener(javax.faces.event.ComponentSystemEvent event) throws
javax.faces.event.AbortProcessingException.

That's actually too bad. When I do a preRenderView event with viewParams, I
don't need the CSE parameter, and I'd rather not couple my managed bean with
the JSF API. So, it sure would be nice if I had the flexibility of using the
signature public void listener() instead. Mojarra actually lets me do that!

I am asking here and not in the Mojarra forum because I am hoping that the
f:event spec isn't accurate--it has other issues (
https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=586,
https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=639,
https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=712)

Did you discuss this before? Does Mojarra implement what was intended?

Thanks,

Cay

-- 

Cay S. Horstmann | http://horstmann.com | mailto:cay at horstmann.com
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