Again, the Code I try to use to extract the matching term for the query "aard????" This matches one term in my 350.000 words list. Which I Indexed using the *StandardAnalyzer*.
As already mentioned this matches "aardvark". What can I do to make this work? Thanks, Evert Wagenaar http://www.evertwagenaar.tk Evert Wagenaar On Tue, Oct 25, 2016 at 1:58 AM, Evert Wagenaar <evert.wagen...@gmail.com> wrote: > Thanks Allison. I will try it. > > > Op maandag 24 oktober 2016 heeft Allison, Timothy B. <talli...@mitre.org> > het volgende geschreven: > >> Make sure to setRewriteMethod on the MultiTermQuery to: >> MultiTermQuery.SCORING_BOOLEAN_REWRITE or CONSTANT_SCORE_BOOLEAN_REWRITE >> >> Then something like this should work: >> >> q = q.rewrite(reader); >> >> Set<Term> terms = new HashSet<>(); >> Weight weight = q.createWeight(searcher, false); >> >> weight.extractTerms(terms); >> >> >> >> -----Original Message----- >> From: Evert Wagenaar [mailto:evert.wagen...@gmail.com] >> Sent: Monday, October 24, 2016 12:41 PM >> To: java-user@lucene.apache.org >> Subject: How to get the terms matching a WildCardQuery in Lucene 6.2? >> >> I already asked this on StackOverflow. Unfortunately without any answer >> for over a week now. >> >> Therefore again to the real experts: >> >> >> I downloaded a list of 350.000 English words in a .txt file and Indexed >> it using the latest Lucene (6.2). I want to apply wildcard queries like >> aard???? and then retreive a list of matches. >> >> I've done this before in an older version of Lucene. Here it was pretty >> simple. I just had to do a Query.rewrite() and this retuned what I needed. >> Unfortunately in 6.2 this doesn't work anymore. There is a >> Query.rewrite(Indexreader reader) which should return a HashMap of Terms. >> In my case there's only one matching Term (aardvark). The Searcher >> returns one hit, containing the Document path to the wordlist. The HashMap >> is however empty. >> >> When I change the Query to find more then one single match (like aa*) the >> HashMap remains empty. >> >> I tried the MatchExtractor too. Unfortunately without result. >> >> The Objective of this is to demonstrate the power of Lucene to easily >> find words of a particular length, given one or more characters. I'm pretty >> sure I can do this using regular expressions in Java but then it's outside >> my objective. >> >> Can anyone tell me why this isn't working? I use the StandardAnalyzer. >> Should I use a different Application? >> >> Any help is greatly appreciated. >> >> Thanks. >> >> >> >> -- >> Sent from Gmail IPad >> > > > -- > Sent from Gmail IPad >
