[cdi-dev] @PostConstruct and @Inject methods in superclasses

Mark Struberg struberg at yahoo.de
Sat Oct 1 05:47:54 EDT 2011


Oki found it there:
> most general superclass first.
of course the interceptors_spec_1_1 only defines this for 'Lifycycle interceptors' 

But what about my example 4, the shared @Inject method + @PostConstruct case?
Do we need to invoke all superclass injection first? thus do all @Inject fields + @Inject methods + @PostConstruct first, then the one from the Horse class?
Could we also specify that all @Inject methods needs to get called before @PostConstruct?

txs and LieGrue,
strub

--- On Fri, 9/30/11, Stuart Douglas <stuart.w.douglas at gmail.com> wrote:

> From: Stuart Douglas <stuart.w.douglas at gmail.com>
> Subject: Re: [cdi-dev] @PostConstruct and @Inject methods in superclasses
> To: "Mark Struberg" <struberg at yahoo.de>
> Cc: "cdi-dev" <cdi-dev at lists.jboss.org>
> Date: Friday, September 30, 2011, 9:58 PM
> 
> This is actually covered by the interceptors specification,
> from memory I am pretty sure the base class method is mean't
> to be called first, but the spec gives you the full order. 
> 
> @Inject methods are called before @PostConstuct (the are
> called in InjectionTarget.inject, which gets called before
> InjectionTarget.postConstruct).
> 
> I don't think we specify an order for @Inject methods.
> 
> Stuart
> 
> On 01/10/2011, at 5:47 AM, Mark Struberg wrote:
> 
> > Hi!
> > 
> > JSR-250 common annotations is pretty thin about having
> @PostConstruct in multiple class hierarchies. It just says
> that there must only be one single method annotated with
> @PostConstruct in a class. Thus my question:
> > 
> > If I have 
> > 
> > 
> > public class Animal {
> >  @PostConstruct
> > 
> >  public void doInit() {..}
> >  ..
> > 
> > }
> > 
> > and 
> > 
> >  public class Horse extends Animal {
> >  @PostConstruct
> > 
> >  public void doSomeOtherInit() {..}
> >  ..
> > 
> > }
> > 
> > 
> > 1.) for a contextual instance of Horse, will
> Animal#doInit() get executed or only the one from the
> 'effective' class?
> > 2.) if 1.) was yes, then In which order do they get
> executed? Is this specced somewhere?
> > 
> > 3.) Same scenario with @Inject methods. Do we specify
> an order?
> > 
> > 4.) Both classes have @Inject methods and
> @PostConstruct. Again: which order of invocaition?
> > 
> > 
> > Just that you understand my intention: we had a
> @PostConstruct method in Horse which did set a 'cached' flag
> in Animal. Turned out that this was a random generator
> depending on the intsalled server ;)
> > 
> > 
> > LieGrue,
> > strub
> > 
> > _______________________________________________
> > cdi-dev mailing list
> > cdi-dev at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/cdi-dev
> 
> 



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