[cdi-dev] Extensions and spec-related observer method injection points question

Laird Nelson ljnelson at gmail.com
Thu Feb 16 17:11:41 EST 2017

This section (
http://docs.jboss.org/cdi/spec/2.0-PFD/cdi-spec.html#init_events) says: "If
other beans [other than the BeanManager] are injected into an [portable]
extension’s observer methods, non-portable behavior results."

Rephrased: a portable extension's observer methods must have a minimum of
one parameter (the event being observed) and a maximum of two parameters
(that plus the BeanManager), and none other if you want to stay truly

For true container lifecycle events, I understand this (you don't have
beans to inject yet).  But given that a bean must be provided by the
container for a portable extension (
http://docs.jboss.org/cdi/spec/2.0-PFD/cdi-spec.html#init_events), wouldn't
it be reasonable to permit extra injection points in a portable extension's
*non*-container-lifecycle-event-observing observer methods?

Concretely, I'd like to do this:

  // In my portable extension
  private static final void doSomethingAtStartup(@Observes
@Initialized(ApplicationScoped.class) final Object event, final Frobnicator
someBean) {

...but that would seem to be in violation of the specification.  Could
someone kindly explain why?

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