Feature complete?
David M. Lloyd
david.lloyd at redhat.com
Tue Dec 1 15:36:49 UTC 2015
I think Peter Kriens is best qualified to answer about OSGi, but I'm
fairly confident in saying that OSGi doesn't meddle with accessibility
in this way (or at all).
On 12/01/2015 09:06 AM, Paul Benedict wrote:
> Personally, I am surprised that no one else from the EG has publicly
> discussed or debated David's proposal. There are 10 people on the EG! It
> would be nice to hear why and what the experts are for or against --
> including the current Jigsaw design.
>
> It's my current understanding that the "public does not guarantee
> accessible" is similar to OSGi. Correct me if wrong, but it is similar
> regarding the requirement to export packages, right? I would be
> interested in knowing if people have the same critique about OSGi. With
> so many people loving OSGi's accessibility model, why is it unacceptable
> for the JDK? David, maybe you can speak to this too.
>
> Cheers,
> Paul
>
> On Tue, Dec 1, 2015 at 8:54 AM, David M. Lloyd <david.lloyd at redhat.com
> <mailto:david.lloyd at redhat.com>> wrote:
>
> This is something I hope to address in my alternative JDK module
> implementation. I feel that Jigsaw as it stands right now has too
> many practical problems to be a candidate for JSR 376, and I'm
> hoping to either influence Jigsaw into a different state or move to
> an alternative design (like mine or another as-yet-unwritten) which
> fixes these flaws.
>
> On 12/01/2015 08:42 AM, Vitaly Davidovich wrote:
>
> Alan,
>
> What's the reason a new java/bytecode access modifier to indicate
> module-private wasn't implemented? I agree that public not being
> really
> public is a big wart.
>
> sent from my phone
> On Dec 1, 2015 9:27 AM, "Alan Bateman" <Alan.Bateman at oracle.com
> <mailto:Alan.Bateman at oracle.com>> wrote:
>
>
> On 01/12/2015 13:54, Stephen Colebourne wrote:
>
> :
> The JavaOne talks specifically mention the need for code
> changes for
> reflection code (adding readability IIRC). And I know
> there will be
> lots of psuedo code that says:
> if (!member.isPublic) {
> member = member.setAccessible(true)
> }
> which is also likely to have problems, because public no
> longer has
> exactly the same meaning as today.
>
> The J1 slides on adding read edges was in the context of
> migration to an
>
> explicit module. We used the Jackson JSON data-binding API
> as an example as
> it's a small enough example to demonstrate a library that
> attempts to
> access or instantiate a type in the consumer module that it
> doesn't read.
> So a migration topic and not meant to give the impression
> that all
> libraries on the class path using core reflection would break.
>
> "public does not guarantee accessible" will of course be a
> surprise at
> first. In terms of compatibility then it becomes an issue
> when an existing
> library on the class path (that doesn't know anything about
> modules) get a
> reference to a type in a non-exported package of an explicit
> module. It's
> the first item in the Risks and Assumptions section of JEP
> 261 but I think
> we'll need to see how people get on mixing the class path
> and modules to
> understand the impact. I hope in time that there will be a
> good migration
> guide to modules and I've no doubt that this will be one of
> the topics that
> it will need to cover.
>
> -Alan.
>
>
> --
> - DML
>
>
--
- DML
More information about the jigsaw-dev
mailing list