dev@jsr311.java.net

Re: JSR311: POLL - Targets for _at_*Param, _at_DefaultValue, _at_Encoded

From: Heiko Braun <hbraun_at_redhat.com>
Date: Wed, 12 Mar 2008 09:22:21 +0100

After reconsidering the recent arguments,
I'll have to admit that the particular use cases haven't been all clear
to me. I'll revisit my vote and go for (v).

/Heiko


On Tue, 2008-03-11 at 18:45 +0100, Heiko Braun wrote:
>
> I am voting for (i), the status quo.
>
> /Heiko
>
> On Tue, 2008-03-11 at 13:36 -0400, Marc Hadley wrote:
> > There's been a lot of discussion of whether or not to expand the
> > targets (i.e. what Java artifacts you can use the annotation on) of
> > the @*Param annotations (i.e. @PathParam etc al). If we do add targets
> > for these annotations I think we also need to do the same for
> > @DefaultValue and @Encoded. I'm uncomfortable adding targets that are
> > only supported in some implementations so if we do add targets they
> > will be required to be supported on resource classes (not providers)
> > in all implementations.
> >
> > Discussion so far has been between Bill, Stephan and myself, I'd like
> > to hear from others hence this poll. Please choose from the following
> > and reply to the list with your selection. Silence means you don't
> > care what happens - how could that be ;-).
> >
> > Here are the options for target I see:
> >
> > (i) Parameter. The status quo. Works with any lifecycle.
> > (ii) Parameter and field. Spec will warn that use on a field in a
> > singleton resource isn't supported.
> > (iii) Parameter and field. Spec will require use of a proxy for field
> > injection. Pro: singletons can be supported. Con: will affect
> > performance. Con: still won't work for simple types, spec will warn
> > about this.
> > (iv) Parameter, field and method (bean setter). Spec will warn that
> > use on a field in a singleton resource isn't supported and that use on
> > method will require application-managed thread-local handling. Pro:
> > bean setter enable support for singletons. Con: complicated bean
> > setters.
> > (v) Parameter, field and method (bean setter). Spec will require use
> > of a proxy for field and method injection. Same pros and cons as (iii).
> >
> > Vote early, vote once.
> > Marc.
> >
> > ---
> > Marc Hadley <marc.hadley at sun.com>
> > CTO Office, Sun Microsystems.
> >
> >
> >
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