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Posted to ojb-user@db.apache.org by Geoff Gerrietts <ge...@gerrietts.net> on 2003/03/23 03:56:36 UTC
"competitive locking" configuration
I've been trying to figure out how to set up OJB (hopefully using the
ODMG API) for an environment where several distinct applications will
be aiming at the same database.
To my mind, this involves either having no cache, or a pretty shallow
cache. I've spent some time prowling through the docs, but I confess
that I'm a bit confused as to how I should implement this. Should I
just be setting up ObjectCacheEmptyImpl instead of
ObjectCacheDefaultImpl? Is that enough?
Advice appreciated.
Thanks,
--G.
--
Geoff Gerrietts "Me and my homies, we tag O.D.."
<geoff at gerrietts net> --Unknown grafitti artist at a party
Re: "competitive locking" configuration
Posted by Armin Waibel <ar...@code-au-lait.de>.
> Quoting Armin Waibel (armin.waibel@code-au-lait.de):
> > > Should I just be setting up ObjectCacheEmptyImpl instead of
> > > ObjectCacheDefaultImpl? Is that enough?
> >
> > Yes, this should be enough.
> > (And it's recommended to use an database based sequence manager
> > implementation, like SequenceManagerNextValImpl or your
> > own impl.)
>
> Thanks!
>
> I'm not sure I understand the differences between the various sequence
> managers very well. What I know is entirely taken from the
> documentation for repository.xml, and that was not really explicit (or
> maybe "verbose" is the word I'm after) enough to clue me in.
>
> Should I be looking somewhere else, or should I be reading the source
> code?
More info
http://db.apache.org/ojb/sequencemanager.html
if this doesn't help, take a look in the source code of the
org.apache.ojb.broker.util.sequence-package.
regards,
Armin
>
> Thanks again,
> --G.
>
> --
> Geoff Gerrietts "He was a great patriot, a humanitarian, a
loyal friend;
> <ge...@gerrietts.net> providing, of course, he really
is dead."
>
--Voltaire
>
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> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
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>
>
Re: "competitive locking" configuration
Posted by Geoff Gerrietts <ge...@gerrietts.net>.
Quoting Armin Waibel (armin.waibel@code-au-lait.de):
> > Should I just be setting up ObjectCacheEmptyImpl instead of
> > ObjectCacheDefaultImpl? Is that enough?
>
> Yes, this should be enough.
> (And it's recommended to use an database based sequence manager
> implementation, like SequenceManagerNextValImpl or your
> own impl.)
Thanks!
I'm not sure I understand the differences between the various sequence
managers very well. What I know is entirely taken from the
documentation for repository.xml, and that was not really explicit (or
maybe "verbose" is the word I'm after) enough to clue me in.
Should I be looking somewhere else, or should I be reading the source
code?
Thanks again,
--G.
--
Geoff Gerrietts "He was a great patriot, a humanitarian, a loyal friend;
<ge...@gerrietts.net> providing, of course, he really is dead."
http://www.gerrietts.net/ --Voltaire
Re: "competitive locking" configuration
Posted by Armin Waibel <ar...@code-au-lait.de>.
Hi Geoff,
----- Original Message -----
From: "Geoff Gerrietts" <ge...@gerrietts.net>
To: "OJB Users List" <oj...@db.apache.org>
Sent: Sunday, March 23, 2003 3:56 AM
Subject: "competitive locking" configuration
> I've been trying to figure out how to set up OJB (hopefully using the
> ODMG API) for an environment where several distinct applications will
> be aiming at the same database.
>
> To my mind, this involves either having no cache, or a pretty shallow
> cache. I've spent some time prowling through the docs, but I confess
> that I'm a bit confused as to how I should implement this. Should I
> just be setting up ObjectCacheEmptyImpl instead of
> ObjectCacheDefaultImpl? Is that enough?
Yes, this should be enough.
(And it's recommended to use an database based sequence manager
implementation, like SequenceManagerNextValImpl or your
own impl.)
regards,
Armin
>
> Advice appreciated.
>
> Thanks,
> --G.
>
> --
> Geoff Gerrietts "Me and my homies, we tag O.D.."
> <geoff at gerrietts net> --Unknown grafitti artist at a party
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ojb-user-unsubscribe@db.apache.org
> For additional commands, e-mail: ojb-user-help@db.apache.org
>
>
>