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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: Third-Party Licensing Policy
Date Fri, 10 Jan 2014 08:05:15 GMT
I didn't create the karaf-extra project yet as we didn't have the need.

I will create it when we need some extra/contrib.

When you said "any plans to migrate the projects", you mean Karaf projects ?


On 01/10/2014 08:21 AM, Krzysztof Sobkowiak wrote:
> Ok thanks a lot, it clarified me my questions. The license content use
> juridical language. I don't understand it always. I could find
> camel-extra and servicemix-extra projects. But I can't find karaf-extra.
> Where is this project? Have you any plans to migrate the projects in git
> (or even host on Github)?
> Best regards
> Krzysztof
> On 10.01.2014 08:06, Jean-Baptiste Onofré wrote:
>> Hi Krzysztof,
>> I invite you to read the GPL, APL, etc license content.
>> My comments inline:
>> On 01/10/2014 07:36 AM, Krzysztof Sobkowiak wrote:
>>> Hi
>>> Thanks for answers. I need still some clarifications. I'll use some
>>> samples
>>> On 10.01.2014 05:44, Jean-Baptiste Onofré wrote:
>>>> Hi
>>>> It's a difference between inclusion, usage, and reference.
>>>> For instance, GPL license is a intrusive license. It means that any
>>>> software that use a code under GPL has to be itself under the GPL
>>>> license. That's why you can't use GPL in a Apache project. It's the
>>>> case for usage, inclusion or reference.
>>>> LGPL is a bit permissive in the cave of reference. LGPL is a Category
>>>> X for inclusion and usage. It means that it's not possible to use LGPL
>>>> if the project embeds some jar under LGPL, or ship some code (like
>>>> copy/paste) under LGPL. However, if you just reference the project
>>>> without embedding it, and it's an user action to actually download and
>>>> add the LGPL jar, it's fine.
>>> I don't know if I have understood it correctly. I can reference
>>> Hibernate libraries in Karaf feature (e.g. because it is referenced by
>>> other library which is also included in Karaf feature ans uses the code
>>> from Hibernate or because we need Hibernate as JPA provider) . But I can
>>> not implement any sample with Karaf which shows, how to use Spring with
>>> plain Hibernate, because the Hibernate  code (e.g. SessionFactory) would
>>> be referenced in this code. But I can implement such a sample outside
>>> Karaf (probably under another license, which? LGPL?) and eventually
>>> reference the sample somewhere in the Karaf feature like the Hibernate
>>> libraries?
>> Correct. That's why we have karaf-extra (like camel-extra,
>> servicemix-extra) to store such code/sample outside Apache codebase.
>>>> Regarding your question:
>>>> 1/ category A
>>>> 2/ category A
>>>> 3/ category A and B
>>>> 4/ category A and B (and we have to "publish" the changes)
>>> Does it mean I can copy some code (e.g. classes) from category B library
>>> into Apache licensed project, eventually change the code, and and ship
>>> it as part of this project (usage 3 and 4) but I can not reference the
>>> category B libraries as maven dependencies and use the classes from the
>>> dependencies in Apache licensed project (usage 1 and 2)?
>> Not really, it depends in the license. Basically, all code in Apache
>> project should be under Apache license. Again, we can add it in
>> karaf-extra.
>>> I use an example again  - AspectJ is licensed under EPL 1.0 license.
>>> Assume I'd like to implement a WeavingHook using the AspectJ classes
>>> (reference AspectJ as maven dependency and use the classes in my code).
>>> Does it mean, my code can not be included in Apache licensed project,
>>> but I can implement the hook in a project under other license and
>>> eventually reference it in Karaf feature?
>> Correct, you can't include in Apache project. You can create your
>> project outside of Apache project and reference it. Same as before:
>> you can do your WeavingHook in karaf-extra.
>> Regards
>> JB
>>> Best regards
>>> Krzysztof
>>>> 5/ all
>>>> 6/ category A and B
>>>> Regards
>>>> JB
>>>> On 01/09/2014 11:35 PM, Krzysztof Sobkowiak wrote:
>>>>> Hi
>>>>> I have some licensing questions.
>>>>> I have found following page http://www.apache.org/legal/3party.html
>>>>> which defines 3 categories of third party licenses. According to this
>>>>> page LGPL v2.1 is category X, but further remark says, the
>>>>> LGPL-v2.1-licensed work can be listed as system requirements but
>>>>> can not
>>>>> be included  by Apache products. I'm not good in licensing but I
>>>>> try to
>>>>> understand it.  Is the category of LGPL really B (and the page
>>>>> should be
>>>>> corrected) or is the LGP category X.  In the second case, can we still
>>>>> list Hibernate in Karaf features (e.g. using the remark about
>>>>> listing of
>>>>> system requirements)?
>>>>> Assume following use cases of third-party work usage:
>>>>> 1. reference 3rd-party library as (maven) dependency and use the
>>>>> classes
>>>>> in ASF code
>>>>> 2. reference 3rd-party library as (maven) dependency and use the
>>>>> classes
>>>>> only in ASF configuration files (e.g. blueprint.xml)
>>>>> 3. include/copy some unmodified 3rd-party code (e.g. some classes) in
>>>>> ASF project
>>>>> 4. include/copy some 3rd-party code (e.g. some classes) in ASF project
>>>>> and modify it
>>>>> 5. list some 3rd-party libraries in Karaf features, but not include
>>>>> them
>>>>> as binaries in one of the Karaf distributions
>>>>> 6. list some 3rd-party libraries in Karaf features, and include
>>>>> them as
>>>>> binaries in one of the Karaf distributions in system repository
>>>>> Could anybody please answer which of above points are allowed for
>>>>> following 3rd-party works
>>>>> a. category A as the whole category - I assume, all above use cases
>>>>> are
>>>>> allowed in this category, is it ok?
>>>>> b. category B as the whole category
>>>>> c. category X as the whole category
>>>>> d. LGPL
>>>>> e. GPL
>>>>> f. EPL
>>>>> I have chosen Karaf as sample ASF project, but it could be any
>>>>> other ASF
>>>>> project, e.g. ServiceMix or Aries
>>>>> Do the rules from the page mentioned above apply only for ASF projects
>>>>> or for any project licensed under Apache License?
>>>>> Best regards
>>>>> Krzysztof
>>> --
>>> Krzysztof Sobkowiak
>>> JEE & OSS Architect | Technical Architect @ Capgemini
>>> Capgemini <http://www.pl.capgemini.com/> | Software Solutions Center
>>> <http://www.pl.capgemini-sdm.com/> | Wroclaw
>>> e-mail: krzys.sobkowiak@gmail.com <mailto:krzys.sobkowiak@gmail.com> |
>>> Twitter: @KSobkowiak
> --
> Krzysztof Sobkowiak
> JEE & OSS Architect | Technical Architect @ Capgemini
> Capgemini <http://www.pl.capgemini.com/> | Software Solutions Center
> <http://www.pl.capgemini-sdm.com/> | Wroclaw
> e-mail: krzys.sobkowiak@gmail.com <mailto:krzys.sobkowiak@gmail.com> |
> Twitter: @KSobkowiak

Jean-Baptiste Onofré
Talend - http://www.talend.com

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