I agree with Oliver. I don't think we have consensus about if and how we
want to implement this. Does it even make sense to try to document this?
What value does such a documentation have, when it is wrong 50% of the
time? I just sumed up the feedback I got from one (!) user at the
conference. I think this needs more thought. This is why I suggested to
create a PR instead of committing this directly to master.

Regards.
Benedikt

Gary Gregory <garydgreg...@gmail.com> schrieb am Di. 29. Nov. 2016 um 22:33:

> On Tue, Nov 29, 2016 at 1:12 PM, Oliver Heger <
> oliver.he...@oliver-heger.de>
> wrote:
>
> >
> >
> > Am 28.11.2016 um 22:28 schrieb Gary Gregory:
> > > WRT licensing, I re-implemented the annotations in git master. Notice
> > that
> > > all Javadocs are different and much simpler for now. Feel free to write
> > > more.
> >
> > As the length of this thread shows, using annotations for the purpose of
> > documenting thread-safety can be a controversial topic.
> >
>
> How is the length of a thread a reflection of its controversy?
>
>
> > I do not see the advantage over a plain text documentation in Javadoc.
> > Written text can even be more comprehensive.
> >
>
> One does not exclude the other. Annotations are easy to search. Text in
> Javadoc is subject to typos and formatting oddities that makes it much
> harder to search.
>
> Tools can work with annotations.
>
>
> >
> > The risk that the documentation goes out of sync with the implementation
> > is given in both scenarios. But if a class announced as thread-safe is
> > manipulated in a way that it is no longer thread-safe, I would consider
> > this as a bug. This is also a kind of backwards-incompatible change.
> >
>
> That has nothing to do with annotations. If we change behavior in some
> incompatible way, that's the bug.
>
> I can interpret what you wrote as: If I remove an @Override annotation,
> then that is backwards-incompatible change. That sounds extreme.
>
> I do not think we have talked about annotations in the context of backwards
> compatibility. Does this deserve a separate discussion?
>
> a third penny,
> Gary
>
>
> >
> > My 2 cents
> > Oliver
> >
> > >
> > > Gary
> > >
> > > On Mon, Nov 28, 2016 at 12:55 PM, Gary Gregory <garydgreg...@gmail.com
> >
> > > wrote:
> > >
> > >> On Mon, Nov 28, 2016 at 12:18 PM, Matt Benson <gudnabr...@gmail.com>
> > >> wrote:
> > >>
> > >>> I hoped to stay out of this. :) Points:
> > >>>
> > >>> * "provided" scope is another Maven mechanism that compiles against a
> > >>> given dependency but does not pull the dependency in as a runtime
> > >>> dependency. I personally prefer it to marking a dependency optional.
> > >>> * For annotations with only classfile retention, a future package
> > >>> rename e.g. lang4 would not require a consumer to upgrade just for
> the
> > >>> renamed annotation, though nothing would stop them from doing so. A
> > >>> given project could depend on either or both of lang3 and lang4 in
> any
> > >>> combination of compile-only or runtime-inclusive scope with no
> > >>> problems.
> > >>> * A standalone annotations component might be interesting, but I'm
> not
> > >>> sure if the proposed annotations constitute a critical mass adequate
> > >>> to justify it.
> > >>>
> > >>
> > >> I would have a hard time justifying a commons-lang3-annotations module
> > >> with only these 4 annotations.
> > >>
> > >> I could see having a Commons Annotations component though which for
> good
> > >> or bad would hold all annotations one could imagine having the Commons
> > >> world. Hm... it smells a bit though...
> > >>
> > >> Gary
> > >>
> > >>
> > >>>
> > >>> Matt
> > >>>
> > >>> On Mon, Nov 28, 2016 at 1:21 PM, Pascal Schumacher
> > >>> <pascalschumac...@gmx.net> wrote:
> > >>>> Groovy had to change the license of its documentation from CC-A 3.0
> to
> > >>> the
> > >>>> Apache License during incubation:
> > >>>>
> > >>>> https://issues.apache.org/jira/browse/LEGAL-167
> > >>>> http://markmail.org/message/2e7tehlwtpx625q4
> > >>>> https://issues.apache.org/jira/browse/GROOVY-7470
> > >>>>
> > >>>> So I guess Commons is probably not allowed to use these files.
> > >>>>
> > >>>>
> > >>>> Am 28.11.2016 um 18:58 schrieb Gary Gregory:
> > >>>>>
> > >>>>> On Mon, Nov 28, 2016 at 7:15 AM, Jochen Wiedmann
> > >>>>> <jochen.wiedm...@gmail.com>
> > >>>>> wrote:
> > >>>>>
> > >>>>>> On Mon, Nov 28, 2016 at 4:06 PM, sebb <seb...@gmail.com> wrote:
> > >>>>>>
> > >>>>>>> The code would not run without the JCIP jar.
> > >>>>>>
> > >>>>>> Are there licensing issues regarding that jar?
> > >>>>>>
> > >>>>> Hm, according to https://www.apache.org/legal/resolved.html, the
> > >>> license
> > >>>>> "Creative Commons Attribution (CC-A) 2.5" is discussed in the
> section
> > >>> "HOW
> > >>>>> SHOULD "WEAK COPYLEFT" LICENSES BE HANDLED?"
> > >>>>>
> > >>>>> It looks like we might have an issue but this is not clear to me as
> > >>> IANAL.
> > >>>>> I you look at the license summary
> > >>>>> https://creativecommons.org/licenses/by/2.5/ it sure seems OK, but
> > our
> > >>>>> resolved.html has this license on a list of licenses to watch out
> > for.
> > >>>>>
> > >>>>> So to be on the safe side, how do we best re-implement these? The
> > >>>>> annotation names we can keep as is but I would imagine that we'd
> want
> > >>> to
> > >>>>> re-write the Javadoc from scratch.
> > >>>>>
> > >>>>> Thoughts?
> > >>>>>
> > >>>>> Gary
> > >>>>>
> > >>>>>
> > >>>>>> Jochen
> > >>>>>>
> > >>>>>>
> > >>>>>> --
> > >>>>>> The next time you hear: "Don't reinvent the wheel!"
> > >>>>>>
> > >>>>>> http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/
> > >>>>>> evolution-of-the-wheel-300x85.jpg
> > >>>>>>
> > >>>>>> ------------------------------------------------------------
> > ---------
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> > >>>>>> For additional commands, e-mail: dev-h...@commons.apache.org
> > >>>>>>
> > >>>>>>
> > >>>>>
> > >>>>
> > >>>>
> > >>>>
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> > >>>
> > >>>
> > >>
> > >>
> > >> --
> > >> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org
> > >> Java Persistence with Hibernate, Second Edition
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> > >>
> > >> <http:////
> ir-na.amazon-adsystem.com/e/ir?t=garygregory-20&l=am2&o=1&a=
> > 1617290459>
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> > >
> > >
> >
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>
>
> --
> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org
> Java Persistence with Hibernate, Second Edition
> <
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> >
>
> <http:////
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> <
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> >
>
> <http:////
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> Spring Batch in Action
> <
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