Hi everybody,
First of all, the text become a bit longer than expected, so if you
don't want to read all of it, you can find my questions summarized at
the end...
The more I read about OSGi the more confused I get at the moment. So it
would be nice if someone could answer at least some of my numerous
questions.
But first let me explain what I have in mind: I want to build a
web-application that can be modularized via plugins. For that purpose I
was thinking about a "basis" platform which allows to administrate
plugins (installing / de-installing) in an administration-area. Let's
assume I want to have two plugins. First a simple blog, that let's me
publish articles and as a second plugin a simple shoutbox. Further we
assume that the shoutbox should be implemented with JSF and Hibernate
and the blog with Struts and iBatis. Both plugins should appear in a
menu which is provided by the basis platform. In both plugins I also
want to use Spring.
So I created a small web-application that starts Felix in embedded mode
and deployed it on my Tomcat. Also installing a simple Hello-World
bundle programmatically was not a problem.
After that I searched the web for integrating another web-application as
an OSGi bundle and I stumbled upon ModuleFusion
(http://code.google.com/p/modulefusion/) which seems to head into the
right direction. First thing I noticed trying it out, was, that
ModuleFusion starts the webserver as an OSGi-bundle.
Is it just a matter of taste to let the webserver be started by the OSGi
framework or the OSGi framework be started by a web-application or are
there some advantages / disadvantegs that I don't see yet?
After further investigating I stumpled upon Spring-DM which seems the
way to go, if you want to use Spring within OSGi. Is it
essential/advised to use Spring-DM or is there another possibility to
use Spring within OSGi?
Right after that I read about "SpringSource Application Platform" which
sounds quite like what I had in mind. Especially the possibility of
migrating legacy web-applications to there PAR-format, to take
advantage of there platform. But I'm not sure, if it's not a bit
overkill for my scenario.
Here again, I read, that the webserver is started by the platform.
And then there is Apache Sling, which is also using Felix. But honestly
I am not quite sure, if I really got the idea of Sling and if it could
be of any use for me. Can it?
So after all those questions I still don't know how to use e.g. Struts
or JSF in an OSGi bundle.
I guess that's it what's currently on my mind.
My question summarized:
1) Should the webserver be started as an OSGi bundle or should the OSGi
framework be started by an web-application?
2) If I want to use Spring in my application, do I have to use Spring-DM?
3) Will I need SpringSource Application Platform?
4) What is Sling exactly for?
5) Are there any tutorials / examples I haven't found yet, which
demonstrates a simple web-application with e.g. Struts used within a plugin?
I would appreciate it, if someone could push me into the right direction.
Joachim
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
