I think I solved my problem - used MatchAllDocsQuery() - is that the best solution ?
- Mike aka...@gmail.com On Thu, Feb 11, 2010 at 3:50 PM, Michel Nadeau <aka...@gmail.com> wrote: > Hi, > > I use ConstantScoreQuery to find all documents in an index like this: > > td = searcher.search(new ConstantScoreQuery(cluCF), null, md, cluSort); > > * cluCF is a Filter > * md is int = 999 > * cluSort is a Sort > > My problem is that I don't always have a filter (cluCF) - so sometimes its > value is 'null' - and Lucene crashes with a "java.lang.NullPointerException" > error. > > Any idea how I can search in ALL documents without a filter? > > - Mike > aka...@gmail.com > > > On Thu, Feb 11, 2010 at 1:54 PM, Yuval Feinstein <yuv...@answers.com>wrote: > >> Thanks Ian and Andrzej. >> You solved a mystery for us. >> -- Yuval >> >> ________________________________________ >> From: Andrzej Bialecki [...@getopt.org] >> Sent: Thursday, February 11, 2010 6:53 PM >> To: java-user@lucene.apache.org >> Subject: Re: Do deleted documents affect scores? >> >> On 2010-02-11 17:35, Ian Lea wrote: >> > I'm pretty sure that the answer is no and a quick test on a small >> > index with/without deleted docs showed no difference in the scores, >> > using 3.0. But that was hardly a rigorous test and I don't know >> > enough about lucene internals and scoring to give a definitive answer. >> > >> > Shouldn't be too hard for you to verify or disprove: build an index >> > and throw loads of updates and deletes at it, checking scores as you >> > go. >> >> Actually, deleted docs do affect scoring for a time - IDF of a term is >> not updated until you optimize (or when Lucene decides to merge segments). >> >> >> -- >> Best regards, >> Andrzej Bialecki <>< >> ___. ___ ___ ___ _ _ __________________________________ >> [__ || __|__/|__||\/| Information Retrieval, Semantic Web >> ___|||__|| \| || | Embedded Unix, System Integration >> http://www.sigram.com Contact: info at sigram dot com >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> >
