Hi Christian, I think Karaf examples are good enough to start. They are maybe too simple but provide "classic" use cases (rest, service, jpa, etc).
I agree we can do more, and we are working on it. It's something I discuss with some guys at ApacheCon last week. I will come with concrete proposal soon ;) Regards JB On 19/09/2019 15:02, Christian Schneider wrote: > The problem with OSGi docs is that most of the material is quite old. > Much of it does not apply to modern OSGi development anymore. > > Another issue is that especially for dependency injection there are quite a > few alternatives. Every of these come with their own pros and cons. > As a beginner it is difficult to understand and decide how to start. > > Karaf is a great way to start playing with OSGi as many things are readily > available and the shell and webconsole allow some nice insight into the > system. What karaf does not provide though is a good introduction into > OSGi. I tried to do so with my tutorials but they are more like explained > examples. > > I planned to do a longer introduction around how to build a typical > application based on best practices .. but it is a lot of work and I never > really took on the task. > > You might be interested in my recent talk about OSGi best practices. > Unfortunately in 30 minutes I was not able to really explain how to build > an application but maybe the example helps a bit. > https://adapt.to/2019/en/schedule/osgi-best-practices.html > The most interesting part there is maybe how to build bundles without xml > config. > The new annotations that combine requirements and configs are also very > interesting. > Both of these are not yet covered by much material on the web. > In the example there is a small application with an angular front end and a > jax-rs backend that can be easily installed in karaf. > > Christian > > > Am Mi., 18. Sept. 2019 um 06:45 Uhr schrieb Julian Feinauer < > j.feina...@pragmaticminds.de>: > >> Hi, >> >> it was not so much karaf (I kind of liked it from the start) it was rather >> OSGi. >> We come from spring and when I looked through all the osgi material lots >> of it seemed strange and confusing like Aries, Blueprint, DS, enRoute, ... . >> Serge helped me a lot with sorting the things in my head and getting all >> clear (also with bundle vs. feature vs. feature-repo) and DS stuff and lots >> more. >> So I think Karaf is already doing an excellent job its rather the OSGi >> world that is damn confusing and one thing that probably could help is a >> small OSGi introduction or something. >> >> I hope that helps! >> Julian >> >> Am 16.09.19, 11:47 schrieb "Jean-Baptiste Onofré" <j...@nanthrax.net>: >> >> By the way, Julian, I'm curious. Why did you consider Karaf "hard for >> you to adopt" ? It's to understand what we can improve (maybe >> message/website, example, whatever) in the project to change that ! >> >> Thanks ! >> Regards >> JB >> >> On 16/09/2019 18:21, Julian Feinauer wrote: >> > Hi everybody, >> > >> > my name is Julian and as I’m new on this list, I just wanted to >> shortly introduce myself. I’m a contributor to some Apache projects (PLC4X, >> IoTDB, Calcite) and I met some karaf folks at the ApacheCon in Las Vegas (I >> was the guy hanging around introducing JB and Serge). >> > I have Karaf on my radar for quite some time but always considered >> it to hard for us to adopt. >> > >> > But, as Serge gave me an awesome hands on introduction yesterday, I >> feel like we should really start to work with it and see how it goes. So, >> expect some mails from me here or on user@. >> > >> > Best >> > Julian >> > >> >> -- >> Jean-Baptiste Onofré >> jbono...@apache.org >> http://blog.nanthrax.net >> Talend - http://www.talend.com >> >> >> > -- Jean-Baptiste Onofré jbono...@apache.org http://blog.nanthrax.net Talend - http://www.talend.com
