From: didier.prophete@...
Date: 2005-12-05T18:02:34+09:00
Subject: ruby ferret question -> how to get list of values for a given term ?

hi all,

So I have a ferret question. Suppose I have a bunch of documents I
indexed using ferret. For the sake of simplicity, all my documents have
basically 1 relevant field: "city", which I set up during indexing.

So my question is: how do I get all the different values for 'city' ?
(without having to go through every single document).

There's got to be something that can tell me all the different cities
used in all my document, like ['NY', 'SF', 'LA'] (assuming all my
documents are either in LA, SF or NY)

Thanks for your help

-Didier

ps: I know that I can already get the list of 'field names' using:
  reader = Index::IndexReader.open(<index dir>)
  p reader.get_field_names
but I can't seem to find the missing link to get to the list of values
for a given term...