[Opensource] Réf. : RE: [Opensource] Maturing Framework market

[Raul DAVIDOVICH]

Sandra,


I guess the reason for the EJB integration not beeing that interesting is
that usually EJBs are quite misused. Entity EJBs are not intended for
beeing an object-relationnal mapping (as it's often the case), but for
adding business rules to data. I guess that with the comming of good JDO
implementations this should start to change, and there will be much more
interest in integrating Exprssso's persistance layer to EJBs.. Otherwise,
the architecture is EJBs mapping DBObjects mapping an RDBMS.. while it
should be EJBs calling DBObjects mapping an RDBMS.

As for the controllers, I'm not sure that many people really knows the
added benefit of Expresso over Struts: you can build your pages inside the
controller, and then display them with very simple tags in JSPs, or in XML,
or in Velocity, or in, or in or in.. and this gives us an incredible power
and flexibility


But what I think the main issue we find face to commercial ASs is that
Expresso handles most of the things they do, like users, security, logging,
batch jobs, mailing...and that seems to annoy some people.. Maybe a "core
edition" with just the Schema, DBObjects, Controllers, JSP tags and some
other tools could be much more appreciated in the market, since it would
avoid redundancy of components (don't misunderstand me, I love the complete
version, and I'm not ready to change it for any WL or WS.. I'm not saying
it's useless, just that it could be completed by a lighter weight version
destinated to AS integration).. Perhaps JDO compliance could help too.


At the moment I'm working on a scientific project using Expresso. We are
interfacing R (an open source version of S plus, a statistical analysis
system/programming language) with a web front-end and a DB back-end. So
most of the job is made by Expresso, and it calls R via SOAP (there is a
Java interface for making direct calls, but up to now it doesn't work very
well in the Java -> R sense). We could do a case study on that if you wish.


Finally, as you say, I'm in the category of people you say.. I always have
"brilliant" ideas, and I wait for somebody else to do them.. Of course I
could find lots of excuses.. I do mainly management in my company.. my baby
takes a lot of time from me.. my wife doesn't like me to program by night..
Godzilla ate my laptop.. and so.. oh yes, and my favorite one: I'm mainly
an architect, not a programer!.. I guess I need somebody to kick my b.. a
bit to get to work seriously


Best regards,


---------------------------------------------------
Raul Davidovich
Responsable Informatique
Cvitkovic & Associés Consultants

(33) 1 45 15 40 68
(33) 1 45 15 40 41 Fax
-------------------------------------------------------
http://www.caconcology.com


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Raul

Your insights are well appreciated.

Since the AS (app server) market has been considered a commodity product
for
some time, I figured companies adding framework components to their AS
offerings was an effort to differentiate and value add to entice users.
Unfortunately that would make it undesireable to use OSS framework
components.

What suggestions might you have to resolve the issue of Expresso standing
in
the line of EJB containers?  We have design plans for strengthen Expresso's
integration with EJB - but there hasn't seemed to be a lot of interest for
this. Please correct me if I am wrong there?

There is a JSR afoot to make the integration to IDEs more standardixed
which
would certainly make Expresso integration easier.  In the meantime are
there
any developers who are willing to help with integrating Expresso with their
favourite IDE? (hint too often people just want others to do the work). We
have some wizards defined but needs some developers to do some work to make
it happen.

As for the slow mouth-to-ear to convince people -  If anyone wants to send
a
testimonial (a paragraph or 2) or case study I will post it onsite.

I also want to thank Malcolm for his Expresso Case Study at Sony. I am at
this time looking to get it published.

Sandra

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