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Date: Mon, 30 Oct 2006 14:19:17 +0000
From: "Sian January" <sianjanuary@googlemail.com>
To: harmony-dev@incubator.apache.org, geir@pobox.com
Subject: Re: [classlib] Preprocessor (was Re: [classlib][rmi] Code smell -
 Thread.sleep() in ActivationGroup method)
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Yes - I know AspectJ works on the bytecode and not as a pre-processor to the
source code and I don't think any other AO languages do that either.
Although I'm an advocate for AOP I think we would want to think seriously
before introducing a dependency on a non-javac compiler to Harmony.  However
it would be good for logging, and it's worth noting that AspectJ 5 can
also match based on annotations, which makes it possible to achieve quite
fine-grained logging without cluttering up the source too much with "if (
logging.isDebugEnabled())" etc.

Thanks,

Sian


On 30/10/06, Geir Magnusson Jr. <geir@pobox.com> wrote:
>
>
>
> Chris Gray wrote:
> > On Sunday 29 October 2006 14:04, Geir Magnusson Jr. wrote:
> >> [...]
> >> 3) Java ME - We've had some interest (Chris?) in looking at using the
> >> Harmony classlib for ME, which can also have some differences that
> might
> >> be most conveniently kept in place in the main codebase.
> >
> > Yes, I'm still here and still waiting for an answer to my last mail
> about
> > bringing Mika to the incubator ...
>
> I thought you were off trying to figure out IP provenance.
>
> >
> >> [...]
> >> First, anyone think this is a good idea and second, anyone have any
> >> experience with tools in this area?
> >
> > For JavaME I think it's the only way we'd be able to maintain a single
> source
> > tree. We need to be able to "#ifdef out" references to classes we don't
> have,
> > methods we don't implement, etc..
> >
> > That much being said, I don't have a recommendation for a tool to use.
> Java
> > syntax is sufficiently C-like that cpp is probably do-able, but we'd
> probably
> > stumble over a whole series of gotcha's, and cpp isn't exactly [deity]'s
> gift
> > to preprocessing anyway. Maybe one of the aspect-oriented tools (with
> which I
> > am not at all familiar) could be a better bet?
>
> How?  Doesn't that tend to work on the bytecode?  I know that I'd be
> uncomfortable with anything where there wasn't a clear source tree
> produced.
>
> geir
>
>
> >
> > Cheers,
> >
> > Chris
> >
>


-- 
Sian January

IBM Java Technology Centre, UK

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