On 4/11/2011 1:47 AM, Chris Mantle wrote: > Hi, I’m having some trouble with Lucene at the moment. I have a number of > unique identifiers that I need to search through. They’re in many different > forms, eg. “M”, “MO”, “:MOFB”, “FH..L-O”, etc. All I need to do is an exact > prefix search: at the moment, if I type in ‘M’, I get “M”, “MO” and “:MOFB”, > and I’d like to avoid getting “:MOFB” until the user actually types in ‘:M’. > > This is with a StandardAnalyzer and a PrefixQuery. I’ve tried many different > combinations of analyzer and query. If I use a WhitespaceAnalyzer or a > KeywordAnalyzer, I see that tokens are generated in a form that I’d expect > (“:MOFB” instead of “mofb”, for instance), but I can’t search with a > wildcard: searching with ‘M*’ returns nothing; ‘M’ returns “M” alone. I’ve > also tried using ANALYSED and NOT_ANALYSED indexing to no avail. > > Can anyone advise me on how to remedy this? There must be something I’m > missing here...
I'm not sure why the WhitespaceAnalyzer isn't working for you (perhaps someone else knows), but here's one that does: http://www.pastie.org/1797909 I just wrapped a WhitespaceTokenizer in a LowerCaseFilter and it has the desired effect. Good luck, -Chris --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
