[Zope] ZCatalog, catalogAware Zclass and Versions

[Tres Seaver]

"Kevin Dangoor" <kid@kendermedia.com> wrote:
> 
> ----- Original Message -----
> From: "julio dinis" <juliodinis@hotmail.com>
> To: <zope@zope.org>
> Sent: Monday, February 07, 2000 5:02 PM
> Subject: [Zope] ZCatalog, catalogAware Zclass and Versions
> 
> > This specific class creates me a Site Operation/Development problem every
> > time I start a version. This is because if in my version I create some
> > objects of my Class they would be indexed (again my genial brain!), then
> > locking my catalog, i.e, the methods I have for people to create objects
> > will no longer work because my version is locking the catalog.
> >
> > If there is a way/how-to to a version dont do this I would apreciate
> > feedback. Meanwhile... if I discover a good method I'll post on the list.
> 
> I don't believe there is a way. Earlier, I think Michel may have mentioned
> having some ideas on having less aggressive locking... but, that seemed to
> be a somewhat distant future feature.

I think from discussions with Chris Petrilli at IPC8 that DC has a solution to
this one on the "near term" track (it is a show-stopper for many uses of
Versions).  The core of the idea is to reify the individual nodes within the
Catalog, so that a change to a CatalogAware object within a Version locks only
that node, rather than the whole catalog.

-- 
=========================================================
Tres Seaver         tseaver@palladion.com    713-523-6582
Palladion Software  http://www.palladion.com