Hi Paolo,
Glad to took a look at the docs. I was going to poll you the list but you beat me to it 
I think a poll is a great idea. I am looking forward to your results with JBoss MicroContainer. Here are my thoughts.
OSGI)
I agree that OSGi is not quite there yet. THe plugin model is great. And one thing that almost makes me want to go with it is the fact that IBM is factoring out the Eclipse "Extension Point" mechanism from eclipse into Equniox (their OSGi implementation). Any eclipse developer can tell you that the Eclipse extension point model is great to work with.
However as you say it isn't embeddeble. However I am watching the mailing list closely and embedding OSGi on the server side is something alot of people are asking for, and work has started. So in the next few months we should see OSGi be embeddeble inside a servle container.
Geronimo)
The mikrokernel is nice, but the project hasn't hit 1.0 yet. And right now the goal of the project seems to be to get the J2EE application server out. I have found docs to be a bit sparse as well. The kernel itself is liteweight, but when you start piling everything on top of the kernel you need to make it useful it starts to become heavier.
Spring)
I must say I am leaning pretty heavily toward Spring, for a couple of reasons:
1) It is fully featured web application framework
2) WebMVC is a nice substitute for struts
3) It is integratable with pretty much of the other web technologies out there, including struts
4) I have found aspects to be a very nice way of organizing code
However my number one reason for liking Spring is the popularity it is gaining. For instance, this year at OOPSLA Spring received much attention.
JBoss Microcontainer)
I eagerly await the full evaluation, I have done some research, here are my thoughts.
From what I can tell JBoss MicroContainer offers everything that Spring does. However it still seems like JBoss Microcontainer is still the new guy on the scene and most people are still using spring.
This is an article comparing the two:
http://www.javalobby.org/java/forums/t49723.html
Here is an interesting post that referes to JBoss licencing:
http://www.javalobby.org/java/forums/m91945483.html
So all in all I would have to say that my choice at this moment is definitly Spring.
Any one else who has an opinion please chime in.
-Justin
P.Rizzi Ag.Mobilità Ambiente wrote:
I looked at:
http://docs.codehaus.org/display/GEOS/GeoServer+2.0+Technology
and saw you updated it with more detailed information, very good work!!!
I'm experimenting a bit with JBoss Microcontainer and I hope to be able
to add my experiments' results to the page soon.I think we should start a sort of opinion poll.
Obviously you are free to decide as you like, but I think that
any "Humble and Biased" opinion, can be useful anyway.So, here follows mine (please imagine an implicit "I think..."
before each affirmation).Bye
Paolo Rizzi******************************************************************
.) OSGi
It's surely powerful, but not easily "embeddable".
It tends to want having things done in its own manner
and it may conflict with other container (J2EE in particular).
--- I'd not use it. ---.) Geronimo / GBeans
Light, flexible and embeddable enough, but it has nothing more than JBoss / Microcontainer has, and it's not enough mature.
--- I'd not use it. ---.) Spring
Very light, flexible and embeddable. It's designed to integrate,
not to conflict, with other containers and technology.
It optionally offers more than the plain container (MVC, AOP, etc.).
It's quite mature and supported, but maybe there're not many people
"behind" it, apart from its creator.
--- I'd use it. ---.) JBoss / Microcontainer Very light and flexible. The new Microcontainer is embeddable
and it's designed to integrate, not to conflict, with other containers.
JBoss optionally offers a lot more than the plain container (MVC, AOP,
etc.).
It's very mature and supported, and there's a strong support "behind" it.
--- I'd use it. ---Licenses details remains to be looked for (but I'm no expert in this).
In the end I'd use JBoss / Microcontainer, because that's what I've used
till now (JBoss, not the Microcontainer).
If for any reason this is judged not to be usable, I'd use Spring.
I see no reason to use Geronimo / GBeans instead of JBoss / Microcontainer.
I'd not use OSGi anyway.******************************************************************
-----Messaggio originale-----
Da: Justin Deoliveira [mailto:jdeolive@anonymised.com]
Inviato: lunedì 24 ottobre 2005 17.04
A: "P.Rizzi Ag.Mobilità Ambiente"
Cc: 'dblasby@anonymised.com'; Gabriel Roldán; "L.Percich Ag.MobilitÃ
Ambiente"; geoserver-devel@lists.sourceforge.net
Oggetto: Re: R: [Geoserver-devel] R: Geoserver EnterpriseHi Paolo,
I am glad you are interested in this topic. A technology has not yet been decided on, still in the evaluation stage. OSGi is just the first one that I have had time to document. Next I plan to evaluate Geronimo.
Please feel free to add JBoss to the list of candidates. It you have the time I would love if you could write some docs about why you think its a good way to go.
The list of technologies on the page is by no means complete so please add anything else you think should be there.
-Justin
P.Rizzi Ag.Mobilità Ambiente wrote:
Da: Justin Deoliveira [mailto:jdeolive@anonymised.com]
Inviato: venerdì 30 settembre 2005 19.20
We are in the process of putting up some wiki spacededicated to the
design. It would be nice to start refining some of the great discussions that have been going on with OpenSDI and some of things you
guys have
been doing over the last little while into a architecure and high level design.
Justin
Sorry for disappearing in the last weeks, but I've been taken
away with exporting data to remote Oracle instances...!!!I looked in the "RnD" Wiki space of GeoServer and saw the:
http://docs.codehaus.org/display/GEOS/GeoServer+2.0+Technology
page, that seems the most recently updated.The only technology actually analized in depth is OSGi,
does it means you already choose it, or simply is it the first one
you addressed???I'd like to add JBoss as a suitable technology, and also a couple
of other considerations. May I edit the page???I'm very interested in the proceeding of this and expecially in
Dave's sentence:
"...ps. from the last meeting, it appears the "data/catalog" portion of the framework will be somewhat like an expanded
"DataEngine" (from the IRC meeting)...".
I found no reference to this in the Wiki though... Wherecan I find it???
Bye
Paolo RizziP.Rizzi Ag.Mobilità Ambiente wrote:
I read the transcript from yesterday's IRC meeting. Sorry
we couldnt
attend.
I'm sorry, because we probably didn't advertised the IRC enough...
For the last 2 weeks, I have been in Victoria talking with
the two new
TOPP employees (Brent Owens and Justin Deoliveira).
We have been discussing a large number of topics, but one
of the major
discussions has been on the Geoserver Enterprise Edition.
This is basically a new plug-in and extension-point based
system for
doing Geo-based web application (including things like WFS
and WMS and
WCS). And "customizing" existing applications. For
example, the SIS
stuff "plugging in" to WFS, and geo-wiki things. The new
Enterprise
edition will take geoserver from an application to a platform for
developing and customizing web-based geo-applications.We have discussed how we would provide services for most of what's been
talked about on the mailing list and the few IRCmeetings. I think
you're going to be very excited about it. We are going to write up our
ideas for next week and hope to get some feedback from you.Great!!! I'll wait to see what you came up with with much
interest!!!
dave
Bye Paolo
ps. from the last meeting, it appears the "data/catalog" portion of the
framework will be somewhat like an expanded "DataEngine"(from the IRC
meeting).
I feel this is fundamental, so I'm happy to know we're
quite tuned on it!!!
AVVERTENZE AI SENSI DEL D. LGS. 196/2003 Le informazioni contenute in questo messaggio di posta
elettronica e/o nel/i
file/s allegato/i, sono da considerarsi strettamente
riservate. Il loro
utilizzo è consentito esclusivamente al destinatario del
messaggio, per le
finalità indicate nel messaggio stesso. Qualora riceveste
questo messaggio
senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia
via e-mail e di procedere alla distruzione del messaggio stesso,
cancellandolo dal Vostro sistema; costituisce comportamentocontrario ai
principi dettati dal D. Lgs. 196/2003 il trattenere il
messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti,
copiarlo, od
utilizzarlo per finalità diverse.
-------------------------------------------------------
This SF.Net email is sponsored by:
Power Architecture Resource Center: Free content,downloads, discussions,
and more. http://solutions.newsforge.com/ibmarch.tmpl
_______________________________________________
Geoserver-devel mailing list
Geoserver-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-devel--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.orgAVVERTENZE AI SENSI DEL D. LGS. 196/2003 Le informazioni contenute in questo messaggio di posta
elettronica e/o nel/i
file/s allegato/i, sono da considerarsi strettamente
riservate. Il loro
utilizzo è consentito esclusivamente al destinatario del
messaggio, per le
finalità indicate nel messaggio stesso. Qualora riceveste
questo messaggio
senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia
via e-mail e di procedere alla distruzione del messaggio stesso,
cancellandolo dal Vostro sistema; costituisce comportamentocontrario ai
principi dettati dal D. Lgs. 196/2003 il trattenere il
messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti,
copiarlo, od
utilizzarlo per finalità diverse.
-------------------------------------------------------
This SF.Net email is sponsored by the JBoss Inc.
Get Certified Today * Register for a JBoss Training Course
Free Certification Exam for All Training Attendees ThroughEnd of 2005
Visit http://www.jboss.com/services/certification for more
information
_______________________________________________
Geoserver-devel mailing list
Geoserver-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-devel--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.orgAVVERTENZE AI SENSI DEL D. LGS. 196/2003 Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i
file/s allegato/i, sono da considerarsi strettamente riservate. Il loro
utilizzo è consentito esclusivamente al destinatario del messaggio, per le
finalità indicate nel messaggio stesso. Qualora riceveste questo messaggio
senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia
via e-mail e di procedere alla distruzione del messaggio stesso,
cancellandolo dal Vostro sistema; costituisce comportamento contrario ai
principi dettati dal D. Lgs. 196/2003 il trattenere il messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
utilizzarlo per finalità diverse.
--
Justin Deoliveira
The Open Planning Project
http://topp.openplans.org