I think the use of JCIP annotations should be an Apache Commons-wide
decision. It would only be sensible to share the annotations across
projects. Otherwise, we could get fragmentation pretty easily.

Paul

On Wed, Mar 18, 2009 at 9:48 PM, sebb <seb...@gmail.com> wrote:
> On 19/03/2009, Stephen Colebourne <scolebou...@btopenworld.com> wrote:
>> sebb wrote:
>>
>> >
>> > >  Are you proposing including these pieces of annotation code in [lang],
>> or
>> > > just referencing them? If its just referencing them, then it has no real
>> > > effect, and should be fine (aprt from making the compilation a little
>> more
>> > > complex)
>> > >
>> > >
>> >
>> > I'm not sure what you mean by "including" or "referencing".
>> >
>> > I am proposing to add
>> >
>> > import net.jcip.annotations.Immutable
>> > and
>> > @Immutable
>> >
>> > to the source files of classes that deserve it. Similarly for the other
>> cases.
>> >
>> > Much like using @Override, except that the annotations are not part of the
>> JDK.
>> >
>>
>>  Thats OK technically (as there is no runtime dependency on
>> net.jcip.annotations). However, I suspect it will confuse users, as very few
>> people realise that no dependency is created beyond compilation time.
>>
>>  So, overall, I'm dubious as to whether the value is sufficient to
>> compilcate the compliation and to field the inevitable confusion/questions
>> as to 'why we added a dependency' (when we didn't add one really...)
>>
>
> Again, I'm not sure I follow.
>
> I don't see how the addition of a single new dependency complicates
> the compilation.
> If there is any complication, it is from trying to follow what Maven
> is doing ;-).
>
> Nor do I see why users will be confused, so long as the site shows
> that LANG depends on Java 1.5 only.  Many of them will just use Maven
> to pick up the new version. If necessary one can always add some
> information on the site as to how annotations behave.
>
> I think it's well worth the exercise of checking all the classes to
> see which annotation applies; if necessary the annotations (and
> imports) could be added as single-line comments. [But I really don't
> want to do that.]
>
> I suspect that the change to using generics will be a much greater
> challenge to users; if they can cope with that, then annotations
> should be relatively easy.
>
> Indeed hopefully users will start adding annotations to their own code...
>
>>  Stephen
>>
>>
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