I started a discussion "[Discuss] Release whole sub projects instead of individual bundles" on 2015-05-20. In this thread we agreed to allow to release by subproject and also to move to that versioning scheme over time. For details on pros and cons you can refer to the discussions.

I was not aware that subsystems was changed to that scheme already but it would be a good explanation for the version bump.

Btw. I am currently working on transaction to also move it to that scheme. There I even have to bump the version to 3.0.0 as the transaction.jms module already exists in version 2.0.0.

Christian

On 18.08.2015 15:39, John W Ross wrote:
There were a lot of discussions a couple of years ago about moving to a
release by module scheme rather than release by distribution, and, at one
time at least, I recall that the consensus was to use release by module.
The last two or three subsystem releases appear to follow the release by
distribution scheme where subsystem-api, subsystem-core, and
subsystem-bundle all have the same version (e.g., subsystem-2.0.2). It
sounds like you are advocating for release by distribution in your last
paragraph.

Under the release by module scheme, for example, if only bug fixes
occurred to subsystem-core, I would release just the one module with a
micro version bump but not subsystem-api, so there would be a divergence
in versions across modules within the same distribution. As an "uber
bundle", the subsystem-bundle module should be released whenever one of
its contained components changes I guess, although I wish we didn't have
uber bundles at all.

The versioning policy described in
http://aries.apache.org/development/versionpolicy is great when there's a
well-defined API, as in Subsystems. However, I imagine it can get a bit
hairy with things like aries-util.

I understand your point about possibly incrementing a minor version when
new functionality is introduced; however, new functionality seems unlikely
without a corresponding API change when a well-defined one exists.

To: dev@aries.apache.org
Date: 08/18/2015 08:09 AM
Subject: Re: Fw: Versioning Policy
Sent by: Christian Schneider <cschneider...@gmail.com>

I think for the most part the version policy is still correct.

In my opinion the focus should be on versioning the packages correctly
and according to OSGi semantic versioning rules.
We currently use the aries version plugin to check for this. As the
maven bundle plugin now also offers the semantic versioning checks I
will experiment with switching to it and report how well it works.

For the bundle version I think the version policy described makes sense
in general but I would not mind if the version jump is bigger than the
jump described in the policy.
Sometimes no exported package changes but you still have new
functionality. So a increasing the minor version instead of the bugfix
version makes sense. After all the bundle version does not mean much in
OSGi technically.

Not sure about the subsystems version bump as I did not follow the
changes. I looked up the svn change of the version and it was done by
Jean-Baptiste Onofré. Unfortunately he is on vacation at the moment.

Btw. The policy document even is valid to a large degree for the
releases by subproject that I started with the jpa subproject. The only
difference is that all bundles in the subproject have the same bundle
version. I typically derive the next bundle version from the largest
change in the exported packages of all bundles in  the subproject. So
basically it is the same rule as in the policy document just on a
different level.

Christian


On 18.08.2015 14:29, John W Ross wrote:
No discussion on this? I personally prefer the policy outlined in
http://aries.apache.org/development/versionpolicy, but my main
concern,
whatever the policy, is consistency and understanding how the upcoming
subsystems release should be versioned. What is the current Apache
Aries
versioning policy and where is it defined? Barring any responses, I
will
assume it is still described in the link above.

To: dev@aries.apache.org
Date: 08/13/2015 07:34 AM
Subject: Versioning Policy



What is the versioning policy currently being used? Is it still based
on
http://aries.apache.org/development/versionpolicy and the Aries
versioning
plugin? If so, it's not clear to me how subsystems got a major
version
bump.

--
Christian Schneider
http://www.liquid-reality.de

Open Source Architect
http://www.talend.com



--
Christian Schneider
http://www.liquid-reality.de

Open Source Architect
http://www.talend.com

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