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Re: Ozone is a ... transactional server-side DOM?

On Fri, 17 Nov 2000, Falko Braeutigam wrote:
> On Fri, 17 Nov 2000, Jeff Kowalczyk wrote:
> > I wanted to get a clearer understanding of what Ozone actually is, and
> > aspires to eventually be.
> > 
> > I've been looking for a DOM object that acts like a small multiuser
> > database. (Small number of concurrent users, anyway) Something that can run
> > on an intranet server with the following capabilities:
> > 
> > - Can manage medium-size XML datasets on the server for multiuser reads, but
> > still be persistent and use transactional updates. Medium-size XML would be
> > a few megabytes; In a contact-manager scenario, say 10,000 schedule items
> > and 2,000 person items associated with the schedule.
> > 
> > - Can service read-requests from multiple users.
> > Web pages served to multiple users (10 or fewer) from the persistent XML
> > DOM. PHP or ASP, occasionally using their own client-side parsers, will be
> > requesting some XML and making a page with it, and sending updates to it.
> > That XUpdate thing sounds great.
> > 
> > - Will manage updates to the shared DOM with transactional integrity.
> > (I think) all I need from this is something that locks/delays reads until
> > update is complete, and returns success code on update.
> > 
> > - Implements much of the current DOM spec, Xpath, etc.
> > API closely matches the most modern client-side DOM parsers.
> > 
> > Is Ozone anywhere in the neighborhood of supporting those features, now or
> > in the future?
> 
> ozone is great for this, now.
> 
> Care must be taken when designing your application. You should always keep in
> mind the difference between persistent (server side) and transient DOM. If you
> need to update your DOM tree, XUpdate is the recommended way to do this.
> Otherwise, the corresponding logic must run on the server, inside a database
> object. XUpdate support will be available soon.

It's available in CVS now. Besides, the XMLContainer has slightly changed for
XPath, XUpdate queries. Check it out and give your feedback.

XUpdate doc can be found at http://xmldb.org


Falko
-- 
______________________________________________________________________
Falko Braeutigam                              mailto:falko@smb-tec.com
SMB GmbH                                        http://www.smb-tec.com