CDI: Allow non-component Faces events observeable by CDI

[tandraschko]

i general it would be great to catch system events like PostConstructApplicationEvent

See: https://deltaspike.apache.org/documentation/jsf.html#Eventbroadcasting

I currently see following categories and events:

System

         <system-event-class>jakarta.faces.event.ExceptionQueuedEvent</system-event-class>
         <system-event-class>jakarta.faces.event.PostConstructApplicationEvent</system-event-class>
         <system-event-class>jakarta.faces.event.PreDestroyApplicationEvent</system-event-class>

This can be observed by:

public void listen(@Observes PostConstructApplicationEvent event) {...}

View

         <system-event-class>jakarta.faces.event.PreRenderViewEvent</system-event-class>
         <system-event-class>jakarta.faces.event.PostConstructViewMapEvent</system-event-class>
         <system-event-class>jakarta.faces.event.PreDestroyViewMapEvent</system-event-class>

This can be observed by:

public void listen(@Observes PreRenderViewEvent event) {...}

public void listen(@Observes @View("/myview.xhtml") PreRenderViewEvent event) {...}

[tandraschko]

Thats it actually: tandraschko/myfaces@3689580

please review
@arjantijms @pizzi80 @BalusC @melloware

[BalusC]

This is great. Let's do it for 5.0.

[tandraschko]

apache/myfaces@60ae7eb

[BalusC]

I went a step further and simply adjusted Application#publishEvent() to fire the event via CDI as well. I only deviated from issue title "non-component Faces events" because PreRenderViewEvent is actually a ComponentSystemEvent and apparently we want to fire it.

PR for spec and tck: #2005
PR for Mojarra impl: eclipse-ee4j/mojarra#5550

[tandraschko]

nice
will now adjust myfaces as well

[tandraschko]

@BalusC
just one hint
https://github.com/apache/myfaces/blob/main/impl/src/main/java/org/apache/myfaces/cdi/ViewEventBroadcaster.java#L52

if you fire the event for @View, CDI handles automatically the fallback to observers without @View

could you verify, that your solution doesnt invoke a observer without @View 2 times?

[BalusC]

That didn't work (in Weld). You can find here the test case https://github.com/jakartaee/faces/pull/2005/files

[tandraschko]

added a testcase in our code; works at least fine with quarkus and OWB