[Zope-dev] Updating a ZCatalog when objects in it change their path

[Chris Withers]

cheers :-)

if people start bitching that it's too slow, I'll give this a go...

Chris

Steve Alexander wrote:
> 
> Chris Withers wrote:
> 
> >
> > However, the only way I could find to solve it was to add a
> > manage_afterAdd method to Squishdot Sites which recatalogued all
> > postings. This is a _lot_ more resource intensive than it needs to be,
> > since I don't actually want to recatalog all postings (quite expensive
> > when there are 3000+ of them ;-), I just want to modify the paths that
> > ZCatalog has stored.
> >
> > Is there any way to do this? There probably should be ;-)
> 
> Look in the new ZCatalog product (released for testing a few weeks ago),
> in the manage_normalize_paths method of ZCatalog.py (line 603).
> 
> This method goes through every item in the Catalog, and checks to see if
> its path needs to be changed to the new convention of using the physical
> path to the object.
> 
> You could use a modified version of this method to do what you want,
> calling it from manage_afterAdd. You may need to store the old path to
> the ZCatalog instance in an attribute, so you'll know how to change the
> paths.
> 
> The following code should help, although I haven't tested it. It is
> shamelessly cribbed from Chris P's manage_normalize_paths method.
> 
>    paths = self._catalog.paths
>    uids = self._catalog.uids
> 
>    for path, rid in uids.items():
>        new_path=_method_to_return_new_path_after_add(path)
>        del uids[path]
>        paths[rid] = new_path
>        uids[ppath] = rid
> 
> --
> Steve Alexander
> Software Engineer
> Cat-Box limited
> http://www.cat-box.net