Hi Robert, it looks really good! Many thanks!
Regards, Livia -----Ursprüngliche Nachricht----- Von: "Robert Muir" <rcm...@gmail.com> Gesendet: 16.01.2011 18:50:36 An: java-user@lucene.apache.org Betreff: Re: how to implement a proximity search feature using Queries instead of terms >On Sun, Jan 16, 2011 at 12:42 PM, Livia Hauser <livia.hau...@web.de> wrote: >> Hi All, >> >> i have my own query parser which generates fuzzy/wildcard queries instances. >> It works fantastic, Lucene rocks ;-). >> But i have to make sure the words are not to far apart. I checked current >> proximity implementation. What i found is: PhraseQuery calculates a distance >> between terms (no fuzzy logic possible). >> I have to calculate the distance (proximity) on the base of fuzzy queries. >> >> Somebody a idea how i can implement this feature? >> >> Short example: >> indexed string: "left word a b c d e f other right" >> query string (fuzzy 0.5): "ohter word" >> expected distance: 6 >> > >I think you can do this with lucene's stable branch (what should be >our next 3.1 release): >http://svn.apache.org/repos/asf/lucene/dev/branches/branch_3x/ > >Have a look at SpanMultiTermQueryWrapper: it allows you to rewrite any >MultiTermQuery (such as Fuzzy/Wildcard) into a SpanQuery. >For example in this case I think you would do: > >FuzzyQuery f1 = new FuzzyQuery(new Term("field", "ohter")); >SpanQuery s1 = new SpanMultiTermQueryWrapper<FuzzyQuery>(f1); > >FuzzyQuery f2 = new FuzzyQuery(new Term("field", "word")); >SpanQuery s2 = new SpanMultiTermQueryWrapper<FuzzyQuery>(f2); > >Now you can put the two spanqueries (s1 and s2) into a SpanNearQuery, >and specify the maximum slop, and if they are required to be in order >or not, etc etc. > >For more examples see the unit test: >http://svn.apache.org/repos/asf/lucene/dev/branches/branch_3x/lucene/src/test/org/apache/lucene/search/spans/TestSpanMultiTermQueryWrapper.java > >--------------------------------------------------------------------- >To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >For additional commands, e-mail: java-user-h...@lucene.apache.org > ___________________________________________________________ Empfehlen Sie WEB.DE DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.web.de --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
