Chris McDonough wrote:
There's been a tension in the opencore stuff with the catalog, mostly
that it's easy to setup and use for things, but it doesn't really work
for things outside of the ZODB. Or, I guess theoretically you could
catalog things not in the ZODB, but it's never happened.
IMO, mostly it's a matter of deciding what "index" and "catalog" means
for searching. If you only need full-text search, some indexing systems
are totally inappropriate. Likewise, if you only need "field" indexes
that match just one particular value, it's sometimes vastly simpler just
to come up with your own system based on, e.g. a relational table, than
it is to try to use somebody else's "indexer" or "catalog".
They are similar in that they both need to get information about
updates, and a way to reindex. Full text search can be a little lazier,
as being 100% up-to-date isn't such a big issue.
That said, there's a real need for cross-system indexing of different
kinds. There's text search indexes, but other kinds of more strict
indexes also make sense. It would be very handy to have an index that
wasn't tied to the ZODB, a database, or anything else. (It could be
implemented using the ZODB or a database, of course.)
Xapian seems like a good choice too. It has its own persistence
mechanism and reasonable Python bindings (although from experience maybe
slightly memory-leaky).
Yes, once you get the documents into it. Actually, it's really a
many-to-many notification system that's needed. We have one that needs
documenting and review
(http://www.openplans.org/projects/cabochon/project-home) but while it
handles notifications and events (as do several other systems), that
doesn't cover reindexing the site. And then you also need a set of
useful endpoints, but those can grow over time.
--
Ian Bicking : [EMAIL PROTECTED] : http://blog.ianbicking.org
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