hibernate-devel

[Hibernate] hibernate background?

[Miso P. <mis...@ya...>]

Hello there! Your hibernate technology is really
impressive! I have discovered it a couple of days ago
and I am writing couple of quick protypes. It's really
easy to use it!

I am investigating a hibernate as an option for
dealing with persistance for one of my projects at
work. Could you tell me: Do you know was hibernate
ever deployed in a larger commercial project? Say over
50 persistable classes? Since hibernate is so clever I
am wondering what made you write it? There must have
been a lot of effort put into it. What's the future of
this project? How many people work and contribute to
it? Have you considered to make it a jakarta project?
Many people are probably asking you questions like
that. Maybe if you can reveal some of this background
in the FAQ, it can encourage people to use it and
spread the word and find new bugs and contribute etc.

The second option I am looking at is jboss v3 and
using their CMP 2.0 persistence. Jboss is a valid
option because I can run most of the code efficiently
from within the conatainer and only send the results
back to the clients when ready. How does hibernate
compare to jboss CMP2.0 persistence? Do you know?

Looking forward for your response. Thanks again for
making hibernate available!

Miso

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RE: [Hibernate] hibernate background?

[Anton v. S. <an...@ap...>]

I'm not the author, so I can't answer most of your questions, except for
one:

> Do you know was hibernate ever deployed in a larger
> commercial project? Say over 50 persistable classes?

We're currently using Hibernate on a project with over 100 persisted
classes.  It has been integrated into a reinsurance processing system which
processes over US$1 billion in reinsurance premiums each year.  Most of the
current system was developed before we began to use Hibernate, but with
Hibernate we were able to map the existing legacy database with only a few
minor changes.  This has allowed us to integrate Hibernate into our
application very easily.  We've used Hibernate to add a number of new
features to this application, and it has made development much easier.
We've had no problems related to Hibernate itself.

Anton

Re: [Hibernate] hibernate background?

[Gavin K. <ga...@ap...>]

 
> Since hibernate is so clever I
> am wondering what made you write it? 

Frustration with CMP entity beans. urrrghhhh. And 
memory of something vaguely similar that I once
used in SmallTalk.


> There must have
> been a lot of effort put into it. What's the future of
> this project? 

Global Domination, of course :)


> How many people work and contribute to
> it? 

Check the changelog, most contributions from other
people are mentioned explicitly. Also check the mailing 
list archives.


> Have you considered to make it a jakarta project?

Not really seriously. I prefer LGPL and, to be honest,
the status of a lot of the Jakarta subprojects is .... 
hmmm... difficult to judge. Anyway, OJB moved to the 
Jakarta umbrella recently.


> The second option I am looking at is jboss v3 and
> using their CMP 2.0 persistence. Jboss is a valid
> option because I can run most of the code efficiently
> from within the conatainer and only send the results
> back to the clients when ready. How does hibernate
> compare to jboss CMP2.0 persistence? Do you know?

Havn't used JBoss CMP, but since quite a few of our 
users are JBoss users, and from what I know of EJB2,
I would assume that Hibernate is a much more 
sophisticated O/R tool. The basic problem with the
EJB spec is it is trying to do too many things and does
nothing well.

Re: [Hibernate] hibernate background?

[Brad C. <bra...@wo...>]

>Do you know was hibernate
> ever deployed in a larger commercial project? Say over
> 50 persistable classes?

we use hibernate extensively in our online content management system.  the
only jdbc in the whole application is for streaming blobs.

> Have you considered to make it a jakarta project?

there is already a somewhat similar project there:
http://jakarta.apache.org/ojb/.  while they are similar in the sense that
they are object/relational mappers, they have differenct features and
architectures.  i have never used OBJ so i can't speak for it, but i have
been very happy with hibernate's functionality, simplicity (read: ease of
use) and robustness.

> The second option I am looking at is jboss v3 and
> using their CMP 2.0 persistence. Jboss is a valid
> option because I can run most of the code efficiently
> from within the conatainer and only send the results
> back to the clients when ready. How does hibernate
> compare to jboss CMP2.0 persistence? Do you know?

O/R mapping and CMP are quite different.  off the top of my head, i prefer
O/R mapping because:
1. it lends itself to more agile development
2. is is better suited to applications that model their problem domain in a
very OO manner

hibernate works well in stateless session beans within jboss (and probably
any other j2ee app server) with container managed transactions.

brad