Hi Sirish, Have you looked at SpanQuery's yet?:
http://lucene.apache.org/java/3_0_2/api/all/org/apache/lucene/search/spans/package-summary.html See also this Lucid Imagination blog post by Mark Miller: http://www.lucidimagination.com/blog/2009/07/18/the-spanquery/ One common technique, instead of using a larger-than-normal position increment gap between sentences, is using a sentence boundary token like '$' or something else that won't ever itself be the target of search. Quoting from a post Mark Miller made to the lucene-user list last year <http://www.lucidimagination.com/search/document/c9641cbb1a3bf928/multiline_regex_with_lucene>): First you inject special marker tokens as your paragraph/ sentence markers, then you use a SpanNotQuery that looks for a SpanNearQuery that doesn't intersect with a SpanTermQuery containing the special marker term. Mark's suggestion would work for your within-sentence case, and for the case where you don't care about sentence boundaries, you can use SpanNearQuery without the SpanNotQuery. Using this technique, a single field should serve all of your needs. Steve > -----Original Message----- > From: Sirish Vadala [mailto:sirishre...@gmail.com] > Sent: Wednesday, October 06, 2010 3:19 PM > To: java-user@lucene.apache.org > Subject: RE: Issue with sentence specific search > > > Hmmm... My mistake. > > In fact it is not a phrase search, but its a proximity search. > > My screen gives four options to the user: -All words, -Exact phrase, -At > least one word, -Within proximity of xx words. > > In case of -All words and -At least one word, this is irrelevant an > everything works fine. > > In case of -Exact phrase, I do need to make it sentence specific that > works > well with my current implementation. > > In case of -Within proximity of xx words, the user wants to have an > option, > to either check within xx words in the same sentence or without any > sentence > boundaries. > > I am using the following code to perform proximity search: > > ----- > QueryParser qParser = new QueryParser(Version.LUCENE_29, field, > this.analyzer); > qParser.setDefaultOperator(QueryParser.OR_OPERATOR); > query = qParser.parse(strQuery); > > //strQuery format --> "Search Text"~SPAN > > ----- > bQuery.add(query, BooleanClause.Occur.MUST); > ----- > > this.analyzer is my custom analyzer. This is to implement, as I already > said, right now I am adding each sentence as a separate field(with the > same > field name) to the same document. Also I am setting the position > increment > gap that I did by sub-classing Analyzer and overriding > Analyzer#getPositionIncrementGap() to return 10. > > Since for each sentence, the position increment gap is modified, I am not > sure if I can perform a sentence independent proximity search. > > Apologize for not putting it well before and appreciate any responses. > -- > View this message in context: http://lucene.472066.n3.nabble.com/Issue- > with-sentence-specific-search-tp1644352p1644598.html > Sent from the Lucene - Java Users mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org
