Casey Duncan wrote:
On Thursday 15 August 2002 09:21 am, Jim Fulton wrote:
...
I'm not sure what you mean. The pipelining is defined and executed in the lexicon.
My mistake.
I think that there is at least potential value in sharing lexicons. Of course, a down side is that it complicates set up.
I guess the main complaint was that given a set of indexes sharing a lexicon, deleting the lexicon and replacing it with another one had no effect on the indexes and in fact removes your ability to manage their lexicon at all. So you must replace all of the indexes to use the new lexicon by hand.
Admittedly this is really more of a user interface and management issue then anything. Zope is just not very good at managing one to many relationships unless the one is the container of the many. 8^(
Maybe that's not Zope's job. Perhaps the lexicon should keep track of the indexes using it. Then, if you try to delete it, you'd at least get a warning letting you know that you may need to recreate a bunch of indexes, and telling you which ones.
On the subject of referencing lexicons by path rather than using direct references, I'm inclined to agree that direct references are better for simplicity and speed. It's easy enough to add a new index when you want to change a lexicon. (Well, there are some complications having to do with making sure that you get all the needed data into the new index...)
The current fix is a compromise that does a traversal as seldom as possible. unfortunately it means it must be even more complex then either a simple direct ref or path reference would be.
Yup, and this brittle.
I'm thinking about adopting an alternative fix, which keeps the direct reference and the path to the lexicon and gives you a management interface to select a new lexicon or simply connect to a replacement (which would clear the index). It could also tell you if the lexicon used by the index is the actual one referenced from the path.
That sounds OK. Jim -- Jim Fulton mailto:jim@zope.com Python Powered! CTO (888) 344-4332 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org