Re: [aspectj-dev] AspectJ weaver to 1.5?

[Andy Clement <andrew.clement@xxxxxxxxx>]

I thought I'd post a bit about this.

I've been upgrading the internals of the modules to use Java5.  This
has resulted in cleaner code, and has flushed out a few bugs relating
to putting the wrong things in collections (oops!).  An in one big
win, exploiting generics enabled me to understand a tricky inner class
that I'd never been able to get my head round previously.  This inner
class turned out to have a bug in it which was obvious once the code
was simpler.  It was implementing a 'duplicate filter' - guess the one
thing it didn't do due to the bug... :)

cheers,
Andy

2009/9/5 Simone Gianni <simoneg@xxxxxxxxxx>:
> Hi Andy,
> drop 1.4 as soon as you want to, while it is (unfortunately) still
> meaningful to support a pre 1.5 runtime, it's useless to support a
> completely pre 1.5 developer environment.
>
> I played with retroweaver back a couple of years ago when this issue popped
> up on Apache Cocoon, and it was doing quite a good job. I know a couple of
> projects that used it, then evolved to 1.5, but it helped smooth the
> process.
>
> Simone
>
> Andy Clement wrote:
>>
>> The inability to use generics/autoboxing and most importantly of all
>> covariance is extremely painful when working on the compiler and
>> weaver.  I'm toying with upgrading the code (as I work on it) to use
>> these Java 5 features.
>>
>> I wanted to collect any comments people have?
>>
>> - how important is it that the compiler/weaver are still usable on Java
>> 1.4?
>> - does anyone have experience of using something like retroweaver to
>> create a 1.4 variant of a 1.5 built codebase - does it work ok?
>>
>> This won't affect the ability to process  back level classes or
>> produce back level classes, it just means the execution of the
>> compiler and weaver will require a 1.5 JRE.
>>
>> cheers,
>> Andy
>> _______________________________________________
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>>
>
>
> --
> Simone Gianni            CEO Semeru s.r.l.           Apache Committer
> http://www.simonegianni.it/
>
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