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Re: Antw: persistence

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erobles-2

Re: Antw: persistence

> Is there a special reason why you are looking for such a solution?

No,
I don´t know what`s the performance of omnibase. That`s why I`m asking
for a mapping tool.
I know that omnibase is simple. But what happend with huge amount of objects.
I really apreciate opinions about Omnibase or other OODBMS and mapping
tools also.
Regards
Esteban

Quoting Malte Zacharias <[hidden email]>:

> Object oriented persistence is out of the question?
>
> Because if you are not that determined I would recommend OmniBase
> from my first experiences, under 30 Minutes until the first Objects
> were lying 'round on my HDD...
>
>>>> <[hidden email]> 04.09.06 23.43 Uhr >>>
> Hi list,
> I`m working on a little model in visualworks. After building a little
> UI and some logic in the model, I`m dealing with the (problem?) of
> persist the model. I am looking for a mapping framework such as glorp
> and object lens. Can anybody tell me your experience with them?
> Regards
> Esteban
>
> ----------------------------------------------------------------
> Este mensaje ha sido enviado utilizando IMP desde LIFIA.
>
>
>

----------------------------------------------------------------
Este mensaje ha sido enviado utilizando IMP desde LIFIA.

Steven Kelly

RE: Antw: persistence

> I don´t know what`s the performance of omnibase. That`s why I`m asking
> for a mapping tool.
> I know that omnibase is simple. But what happend with huge amount of
> objects.

I don't know about now, but at least in 2002 Omnibase didn't scale. It hit the performance problem inherent in VW Dictionary hashing, i.e. around 10000 elements. I sent a message to David Gorisek, but never got a reply. I've attached the Excel graphs I made then, which show how serious the problem is. (I also have the tests I ran, but I haven't had time to check there's nothing confidential in the data I used.) It shouldn't be too hard to correct, but I don't know if it has been sorted out yet.

All the best,
Steve

> Quoting Malte Zacharias <[hidden email]>:
>
> > Object oriented persistence is out of the question?
> >
> > Because if you are not that determined I would recommend OmniBase
> > from my first experiences, under 30 Minutes until the first Objects
> > were lying 'round on my HDD...
> >
> >>>> <[hidden email]> 04.09.06 23.43 Uhr >>>
> > Hi list,
> > I`m working on a little model in visualworks. After building a little
> > UI and some logic in the model, I`m dealing with the (problem?) of
> > persist the model. I am looking for a mapping framework such as glorp
> > and object lens. Can anybody tell me your experience with them?
> > Regards
> > Esteban
> >
> > ----------------------------------------------------------------
> > Este mensaje ha sido enviado utilizando IMP desde LIFIA.
> >
> >
> >
>
>
>
> ----------------------------------------------------------------
> Este mensaje ha sido enviado utilizando IMP desde LIFIA.

omniBench.zip (60K) Download Attachment

Mark Roberts

Re: Antw: persistence

In reply to this post by erobles-2

At 12:05 AM 9/6/2006, [hidden email] wrote:
>I don´t know what`s the performance of omnibase. That`s why I`m asking
>for a mapping tool.
>I know that omnibase is simple. But what happend with huge amount of objects.
>I really apreciate opinions about Omnibase or other OODBMS and mapping
>tools also.

Some answers to your questions here:

http://wiki.gorisek.com/WikiDoc/WikiPage?action=reload&page=How+does+OmniBase+perform+with+large+amounts+of+data%3F+Does+it+scale%3F&lang=English

http://wiki.gorisek.com/WikiDoc/WikiPage?action=reload&page=OmniBase+OID&lang=English

HTH,

M