[Zope-CMF] Searching portal_catalog using wildcards or regexp

[Tres Seaver]

On Thu, 2002-11-14 at 13:20, Kevin Carlson wrote:

> Thanks, Chris.  This works fine.  I am curious as to whether or not the
> catalog will support regular expression searching in the future since adding
> a new index to the catalog each time we want to program a new search method
> seems a bit cumbersome.  I understand the overhead involved with regexp --
> even something similar to a LIKE operator in SQL would be nice.  Thoughts
> anyone?

FieldIndexes and KeywordIndex are designed / optimized for exact match
searches;  they won't ever grow any "globbing" features.  Text indexes
(the ur-TextIndex of Zope 2.x, x<6, ZCTextIndex, or TextIndexNG) can
potentially support such queries.  For the ur-TextIndex, it would
suffice to pass a GlobbingLexicon at construction time to the index;
that index would then support 'foo*'-style queries.  ZCTextIndexes
support globbing by default.  I don't know what TextIndexNG requires to
enable globbing support, if anything.

Tres.
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Tres Seaver                                tseaver@zope.com
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