[Opensim-dev] further db thoughts

Tue Feb 5 23:21:23 UTC 2008

Dear Impalah:

We had been using mono-1.2.4. We are going to be standardizing on mono-1.2.5.1 for a while. We have had touble with mono-1.2.6 and are waiting for mono-1.2.6.1 to hope some of the problems have been fixed. So, for now, mono-1.2.5.1 is the answer.

Charles

----- Original Message ----
From: Impalah <impalah at gmail.com>
To: opensim-dev at lists.berlios.de
Sent: Tuesday, February 5, 2008 1:55:12 PM
Subject: Re: [Opensim-dev] further db thoughts

Sorry for answering a bit late, I have not much time for development :-(

I'm making tests with NHibernate (a sample data model with several tables for burning test... 20000+ registers). I tested by now in mysql and mssql, both mono and .NET. I think tomorrow I could try sqlite but... a little problem. Seems that the "official" driver is outdated and everybody recommends to use the one shipped with mono (version 1.2.4 and higher).

Is there any restriction for the mono version opensim uses?

Thanks

2008/1/14, Stefan Andersson <stefan at tribalmedia.se>:
Yes, as I said at the start, how things play together might take a while to get used to. The lib is supposed to create parameterized dynamic sql, so that bit should be injection-aversive.

And, by all means, feel free to find other ways to slice the cake; I put it there for us to extend and modify, in the hope that it could function as a help also for people who want to extend our db definitons with their own need for light-weight persistence.

I know my code sample was stenographic at best, but I hope to deliver some working code (ideally, shape, part and group) at the end of this week - I have it on my hard disk, just have to 'clean' it from context-specifics.

Best,
/Stefan

> Date: Mon, 14 Jan 2008 12:07:34 -0500
> From: sean at dague.net
> To: opensim-dev at lists.berlios.de
> Subject: Re: [Opensim-dev] further db thoughts
> 

> On Mon, Jan 14, 2008 at 11:31:50AM +0100, Stefan Andersson wrote:
> > 
> > 
> > ---
> > Stefan, It would be motivating if you could provide a sample about how the TribalMedia data framework should work. Could that be done by implementing the very simple asset server as an example ? I propose we would make it work, make tests, comment and try to improve it, then it may serve as a baseline for the other db stuff ?
> > --- 
> > 
> > *doh*
> > 
> > I'll just post the code; but beware, it doesn't work, it's just to show you how stuff would interact
> > 
> > (Also, the code could probably be cleaner...)
> > 
> > What to look for:
> > * how the Schema is created and populated
> > * how the m_keyFieldMapper (that is used to extract primary key from queries) is initialized
> > * how the FromReader passes on to FillObject() - the function that will use the Schema to populate the RowMapper (and the PrimitiveBaseShape)
> > * How the CRUD and CreateRowMapper functions are really just there to
> > get a cleaner interface for the caller.
> 
> I'm a bit concerned about the ability to get SQL injection through the
> process (unless I missed something). We need to either put in filter
> for that, or use the parametrized SQL for the base drivers to let them
> filter that.
> 
> I'm still wrapping my head around all of it, but I like much of what I'm
> seeing so far. More later.
> 
> -Sean
> 
> -- 
> __________________________________________________________________
> 
> Sean Dague Mid-Hudson Valley
> sean at dague dot net Linux Users Group
> http://dague.net http://mhvlug.org
> 
> There is no silver bullet. Plus, werewolves make better neighbors
> than zombies, and they tend to keep the vampire population down.
> __________________________________________________________________

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