Is there an analyzer like keyword analyzer, but will also lowering the data from lucene? Or I have to do a customer analyzer by myself?
Thanks > From: java8...@hotmail.com > To: java-user@lucene.apache.org > Subject: RE: During the wild card search, will lucene 2.9.0 to convert the > search string to lower case? > Date: Mon, 1 Feb 2010 14:24:00 -0500 > > > This is maybe something I am looking for. We are using the default value, > which is true. > > Let me examine this method more. > > Thanks for your help. > > > From: digyd...@gmail.com > > To: java-user@lucene.apache.org > > Subject: RE: During the wild card search, will lucene 2.9.0 to convert the > > search string to lower case? > > Date: Mon, 1 Feb 2010 20:36:29 +0200 > > > > Did you try queryParser.SetLowercaseExpandedTerms(false)? > > > > DIGY > > > > -----Original Message----- > > From: java8964 java8964 [mailto:java8...@hotmail.com] > > Sent: Monday, February 01, 2010 8:11 PM > > To: java-user@lucene.apache.org > > Subject: RE: During the wild card search, will lucene 2.9.0 to convert the > > search string to lower case? > > > > > > I would like to confirm your reply. You mean that the query parse will lower > > casing. In fact, it looks like that it only does this for wild card query, > > right? > > > > For the term query, it didn't. As proved by if you change the line to: > > > > Query query = new QueryParser("title", > > wrapper).parse("title:\"BBB CCC\""); > > > > You will get 1 hits back. So in this case, the query parser class did in > > different way for term query and wild card query. > > > > We have to use the query parse in this case, but we have our own Query > > parser class extends from the lucene query parser class. Anything we can do > > to about it? > > > > Will lucense's query parser class be fixed for the above inconsistent > > implementation? > > > > Thanks > > > > > > > From: u...@thetaphi.de > > > To: java-user@lucene.apache.org > > > Subject: RE: During the wild card search, will lucene 2.9.0 to convert the > > search string to lower case? > > > Date: Mon, 1 Feb 2010 17:41:08 +0100 > > > > > > Only query parser does the lower casing. For such a special case, I would > > suggest to use a PrefixQuery or WildcardQuery directly and not use query > > parser. > > > > > > ----- > > > Uwe Schindler > > > H.-H.-Meier-Allee 63, D-28213 Bremen > > > http://www.thetaphi.de > > > eMail: u...@thetaphi.de > > > > > > > -----Original Message----- > > > > From: java8964 java8964 [mailto:java8...@hotmail.com] > > > > Sent: Monday, February 01, 2010 5:27 PM > > > > To: java-user@lucene.apache.org > > > > Subject: During the wild card search, will lucene 2.9.0 to convert the > > > > search string to lower case? > > > > > > > > > > > > I noticed a strange result from the following test case. For wildcard > > > > search, my understanding is that lucene will NOT use any analyzer on > > > > the query string. But as the following simple code to show, it looks > > > > like that lucene will lower case the search query in the wildcard > > > > search. Why? If not, why the following test case show the search hits > > > > as one for lower case wildcard search, but not for the upper case data? > > > > My original data is NOT analyzed, so they should be stored as the > > > > original data in the index segment, right? > > > > > > > > Lucene version: 2.9.0 > > > > > > > > JDK version: JDK 1.6.0_17 > > > > > > > > > > > > public class IndexTest1 { > > > > public static void main(String[] args) { > > > > try { > > > > Directory directory = new RAMDirectory(); > > > > IndexWriter writer = new IndexWriter(directory, new > > > > StandardAnalyzer(Version.LUCENE_CURRENT), > > > > IndexWriter.MaxFieldLength.UNLIMITED); > > > > Document doc = new Document(); > > > > doc.add(new Field("title", "BBB CCC", Field.Store.YES, > > > > Field.Index.NOT_ANALYZED)); > > > > writer.addDocument(doc); > > > > doc = new Document(); > > > > doc.add(new Field("title", "ddd eee", Field.Store.YES, > > > > Field.Index.NOT_ANALYZED)); > > > > writer.addDocument(doc); > > > > > > > > writer.close(); > > > > > > > > IndexSearcher searcher = new IndexSearcher(directory, > > > > true); > > > > PerFieldAnalyzerWrapper wrapper = new > > > > PerFieldAnalyzerWrapper(new StandardAnalyzer(Version.LUCENE_CURRENT)); > > > > wrapper.addAnalyzer("title", new KeywordAnalyzer()); > > > > Query query = new QueryParser("title", > > > > wrapper).parse("title:BBB*"); > > > > System.out.println("hits of title = " + > > > > searcher.search(query, 100).totalHits); > > > > query = new QueryParser("title", > > > > wrapper).parse("title:ddd*"); > > > > System.out.println("hits of title = " + > > > > searcher.search(query, 100).totalHits); > > > > searcher.close(); > > > > } catch (Exception e) { > > > > System.out.println(e); > > > > } > > > > } > > > > } > > > > > > > > The output: > > > > hits of title = 0 > > > > hits of title = 1 > > > > > > > > > > > > _________________________________________________________________ > > > > Hotmail: Trusted email with powerful SPAM protection. > > > > http://clk.atdmt.com/GBL/go/201469227/direct/01/ > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > > > _________________________________________________________________ > > Hotmail: Powerful Free email with security by Microsoft. > > http://clk.atdmt.com/GBL/go/201469230/direct/01/ > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > _________________________________________________________________ > Hotmail: Trusted email with Microsoft’s powerful SPAM protection. > http://clk.atdmt.com/GBL/go/201469226/direct/01/ _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. http://clk.atdmt.com/GBL/go/201469230/direct/01/
