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From Clebert Suconic <clebert.suco...@gmail.com>
Subject Re: [DISCUSS] OSGi support for Artemis
Date Mon, 16 Nov 2015 15:10:40 GMT
I think moving the packages should be an easy thing... does anyone
know an automated way to find this on any IDE or Maven thing? so far I
only know how to do manual inspection. I failed to find such thing on
google (hence the question here).

On Mon, Nov 16, 2015 at 8:42 AM, Christian Schneider
<chris@die-schneider.net> wrote:
> I agree we should try to get rid of the split packages. They are even a
> problem in plain java as you could easily create the same class
> in both without noticing at fist.
>
> A big ueber jat could be a kind of stop gap solution but I think it makes
> sense to try to avoid it if the effort is not too big.
>
> I do not like the fragment approach too much. I personally only consider
> fragments if I need to make some existing jar work and can not change it. It
> might be a last resort if the split packages can not be resolved in any
> other way.
>
> Do you have a good way to find all the split packages? I think the first
> thing we should do is get a complete list of all split packages. Then we can
> decide what to do.
> If there is no automated way I can make a list.
>
> The next step would be to add the maven bundle plugin with defaults and see
> what results it produces.
>
> After that we need to see if we can make the plugin mechanism work for OSGi.
> It seems that for example the protocols use the ServiceLoader to announce
> their impls. That might be covered by Aries spi-fly though
> I do not have any experience with it.
>
> In any case I am willing to help with the OSGi effort.
>
> Christian
>
>
>
> On 13.11.2015 15:21, Guillaume Nodet wrote:
>>
>> I was looking at supporting OSGi deployment for Artemis.
>>
>> The first big problem I hit is the existence of split packages.  Split
>> packages are java packages shared across multiple jars (which become
>> bundles in OSGi).
>> Examples of those are org.apache.activemq.artemis.uri (shared between
>> artemis-jms-client and artemis-core-client) or
>> org.apache.activemq.artemis.api.config (shared between artemis-core-client
>> and artemis-commons).
>> The reason they are problematic is that in OSGi, each bundle has its own
>> class loader, importing classes from other packages based on packages.
>> The
>> same package can not be imported from 2 different bundles.
>>
>> So the question is: would it be possible to get rid of those split
>> packages
>> ? It can be done either by moving the classes from a jar to another one,
>> keeping the same package name, or by renaming one of the split package so
>> that there's no duplicate package names across jars.
>>
>> Thoughts ?
>> Guillaume Nodet
>>
>
>
> --
> Christian Schneider
> http://www.liquid-reality.de
>
> Open Source Architect
> http://www.talend.com
>



-- 
Clebert Suconic

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