There's IndexReader.docFreq(Term), which returns the number of documents that the term occurred in (excluding un-merged deletions).
But the global count of how many times a Term occurred across all docs is not stored. You'd have to get a TermDocs enum for that Term, iterate through all docs, and sum up the freq() from each doc, to compute that, I believe. Mike On Mon, Jun 22, 2009 at 4:55 AM, Murat Yakici<murat.yak...@cis.strath.ac.uk> wrote: > Hi, > > As far as I know, there is no public API to get a term's collection > frequency in Lucene, apart from writing routines with TFV or TermEnum. > Does Lucene store the number of times a term occur in the index? If yes, > can someone direct me to the low-level api where I can get such > information through some extension? If that is not possible, this would > require a change in the index format I imagine? Which classes I should be > dealing with and things I should be careful in implementing such a change? > > > Cheers, > Murat Yakici > Department of Computer & Information Sciences > University of Strathclyde > Glasgow, UK > ------------------------------------------- > The University of Strathclyde is a charitable body, registered in Scotland, > with registration number SC015263. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
