Hi Yonik, Thanks for the quick response. I am curious as to why this is not supported whereas the numdocs() is supported ? Even in the upcoming version its only supported per segment and not across the index, why ? Is it difficult to implement efficiently ?
Pardon my ignorance if I am missing something thats very obvious... Thanks Kannan On Thu, May 27, 2010 at 2:32 PM, kannan chandrasekaran <ckanna...@yahoo.com> wrote: > I was wondering �if there is a way to retrieve the number of unique terms in > the lucene ( version 2.4.0) ... I am aware of the terms() && terms(Term) method that returns an enumeration (TermEnum) but that involves iterating through the terms and couting them. �I looking for something similar to numdocs() in the IndexReader class. No there is not. In 4.0-dev, with the new "flex" APIs, you can retrieve the number of unique terms in a single segment (Terms.getUniqueTermCount()), but not a whole index. -Yonik http://www.lucidimagination.com
