Hi,

JSF2.0 introduce a Tag called f:event for triggering SystemEvents.
IMO it would be great to have a similar tag (maybe the same or with other attributes/attribute-values) to trigger a CDI Event from a JSF Page.

Example:

JSF Page

<h:commandButton action="#{bean.action}" value="Create Document">
   <f:cdiEvent fire="#{bean.document}" select="org.j4fry.cdi.qualifier.Created" />
</h:commandButton>

fire contains the observed object which is the parameter of the observer object
select contains an optinoal qualifier

CDI Observer Method

public void createdDocumentObserver(@Observes @Created Document document) {
   ...
}

The event is triggerd after the action execution. An additional parameter of f:cdiEvent would be useful that indicates whether the event is triggerd either before or after the action execution.

<h:commandButton action="#{bean.action}" value="Create Document">
   <f:cdiEvent fire="#{bean.document}" select="org.j4fry.cdi.qualifier.Created" beforeAction="true" />
</h:commandButton>

Just an idea.
What do you think?

I'm gonna write such a tag because I've got a use case in which it would be useful to use that.

Alex