[Zope] Searching a FieldIndex for prefix or OR

[Dieter Maurer]

Randall F. Kern writes:
 > Is it possible to search a catalog on a field index for either a given
 > prefix, or any of a list of values?
"Prefix" means your fields contain strings...

  You could try to emulate such searches through range searches.

  In usual cases (not all, I agree), PREFIX(x) == p
  is similar to "p <= x <= (p + chr(255)*n)"
  with "n" sufficiently large (usually "1" will be enough).


A search against a list of values is supported directly.


See the catalog section of 

  URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html


Dieter