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Re: Newbie: How to query for an object?

Falko:

So, once I put an object into the database, how do I get it back?

I saw the getObjectsOfClass method, but that is not yet implemented.

I see that I can get an object from its name, but that is not
sufficient since I want more than one object.

Maybe a little more explanantion would help me to understand
what you are talking about.

Thanks,
	Neil.

--
Neil Aggarwal, President & CEO
JAMM Consulting, Inc. -- (972) 612-6056, http://www.JAMMConsulting.com
Custom Programming in Java, C++, HTML, perl

On Mon, 30 Oct 2000, Falko Braeutigam wrote:

> On Sun, 29 Oct 2000, Neil Aggarwal wrote:
> > Hello:
> > 
> > I am just staring with Ozone and am trying to figure out how 
> > to do this:
> > 	I have many objects for a given class, but I want
> > 	to retrieve a subset of instances that match a 
> > 	certain criterion.
> > 
> > How would I do this in Ozone?
> > 
> > I have looked thru all of the examples and the tutorial and
> > they dont address how to do something like this.
> 
> >From the ozone doc (Design Goals/Architecture):
> 
> "ozone does not introduce a new type system, object or computation model like
> relational DBMSs and ODMG/OQL does. ozone just lets you work with persistent
> Java objects in a transactional environment. ozone is Java! No other types than
> Java types, no other query/update language than Java, no impedance mismatch!"
> 
> In other words: Java is the "native" query language of ozone.
> 
> However, a descriptive query lang could be of benefit even for an OODBMS. But
> IMHO such a query lang should provide a real OO interface (in contrast to OQL,
> which introduces all the problems of SQL and adds some new ones). There was a
> discussion about S.O.D.A. (Simple Object Database Access: real OO query system)
> here on the list but unfortunately we stuck with this effort.
> 
> 
> Falko
> -- 
> ______________________________________________________________________
> Falko Braeutigam                              mailto:falko@smb-tec.com
> SMB GmbH                                        http://www.smb-tec.com
>