Hi Ricardo,

I believe there are a number of posts that demonstrate people are using OJB
for "real world" projects, so my advice is to go for it.

If you wait for what you refer to as a "solid implementation" then you make
no progress (I wish I had a buck for every time *that* had been imposed on me
in a "commercial environment"!). You could of course pay a fortune for a
commercial OR mapping tool, but in my experience the fact that you pay for
something does not guarantee quality or reliability (only bills for upgrades
:-)).

OJB is not only (in my opinion) a good OR mapping solution, but it has the
advantages over a commercial product that a) you can change bits you don't
like to suit your particular application area and b) there is a large body of
people actively developing it, with useful discussions on a productive
mailing list. When did you ever get that from a commercial product?

if you are concerned about maybe having to change in the future, I would
suggest trying to "future proof" your design as far as possible by eg
building abstraction layers around key application areas, making it easier to
swap things in and out if necessary.

Finally re PB/ODMG, I would personally go for a PB solution for read access
and ODMG for write/update etc, for performance reasons (you don't really need
transaction/locking overhead for reads in general).

Try it - you'll be glad you did :-)

Cheers,

Chris

[EMAIL PROTECTED] wrote:

> Hi, everyone.
>
> I am working on some research for a new project in my
>  company and OJB fits right in what we need.
> We are working in specific components for development for
>  the company.
> I read in the mailing list that JDO is a prototype yet and
>  ODMG is partly implemented.
>
> I saw a bunch o things on the site and didn't get into a
>  conclusion. Is it safe to use JDO or ODMG in real
>  projects? I can't develop a project in 6 months and in the
>  end of it realize that I have to change many things
>  because I made it based in a prototype. Or because I will
>  have to rebuild it on top of OTM.
>
> In this case, should I work using PB? Does it worth? Maybe
>  it is rather to wait a real and solid implementation...?
> Am I losing something here??
>
> Thanks.
>
> --
> --Ricardo Kohler
>           Costa
> ________________________________________________
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