[forge-dev] Forge 2.0 and OSGi

Paul Bakker paul.bakker.nl at gmail.com
Wed Sep 26 03:49:58 EDT 2012

http://parleys.com/#st=5&id=3361&sl=0this is a recording of one of my osgi talks. At Devoxx I will do a university talk and a hands on lab, so if you are going to Devoxx...

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On 26 sep. 2012, at 07:59, Thomas Frühbeck <fruehbeck at aon.at> wrote:

> Hi Paul,
> I tried to find a video of the talk you gave on this topic, but failed. This is IMHO one of the hottest Java enterprise topics, anyone who has tried to build a long living system for more than a few web pages has felt the pains of modularity, life cycle, versioning, etc. - and I really want to understand some of what you experts are talking of :-)
> If it is publicly availble, can you send me a link, please.
> Regards,
> Thomas
> Am 26.09.2012 05:39, schrieb Paul Bakker:
>> When using OSGi you should not deal with injection or package imports by hand. Package imports should be calculated by byte code analysis (bnd does this). Injecting services should be done with a DI framework such as Felix DependencyMAnager (that's what I use mostly) or declarative service annotations for example. The fact that you can lookup services by hand using the low level Apis doesn't mean you should... ;-)
>> For building stuff you could either use the Bnd plugin in maven (by default it only imports packages that you really use, using byte code analysis). Even better would be switching to BndTools. This is an eclipse plugin specially for OSGi development. It gives hot code reloading etc, no more slow maven builds to see your changes! See my talk to see this in action :-)
>> I don't like JBM because its not doing enough; e.g. no dynamic services. Besides that, OSGi exists for a long time and has proofed to work well. There is a lot of documentation, books etc. JBM is still very much an internal JBoss thing, and almost nobody knows anything about it. I can understand why AS7 required a custom solution, but Forge has very different requirements.
>> Still, not sure it's feasible to start using OSGi for Forge at this point. It would have a lot of impact...
>> Paul
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