>>I came across qsol where in the paragraphseperator and sentence seperator >>can be specified and string can be searched within the paragraph. Qsol does this by using SpanQuerys. 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 http://www.lucidimagination.com On Wed, Jul 29, 2009 at 4:56 PM, ba3 <sbadhrin...@gmail.com> wrote: > > Hi Steve, > > I went through the article. Thanks for the link. The span query mentions > the > position i.e n positions from the terms. The problem was like this : > > Lucene was <some more text> made by Doug <some more text> cutting > > If Doug is found between the words Lucene and cutting then it is a hit. > [there can be any number of positions which is unknown]. If the number of > positions are known then the spans could be used. > > I came across qsol where in the paragraphseperator and sentence seperator > can be specified and string can be searched within the paragraph. > > Can you give your comments. > > - Rgds > Ba3 > > > > > > Steven A Rowe wrote: > > > > Hi ba3, > > > > Did you read the Lucid Imagination article I linked to?: > > > > http://www.lucidimagination.com/blog/2009/07/18/the-spanquery/ > > > > > > It has examples, including specifying the term indicating the end of the > > span. > > > > If the article doesn't do it for you, I need more information to be able > > to help. Can you give an example of what you want to do? > > > > Thanks, > > Steve > > > >> -----Original Message----- > >> From: ba3 [mailto:sbadhrin...@gmail.com] > >> Sent: Tuesday, July 28, 2009 10:39 PM > >> To: java-user@lucene.apache.org > >> Subject: RE: Multiline Regex with Lucene > >> > >> > >> Hi Steve, > >> > >> In case of span queries, the span first query can specify the start of > >> the > >> span, is it possible to specify the term [not the position] indicating > >> the > >> end of the span ? > >> > >> -- Regards > >> Ba3 > >> > >> > >> Steven A Rowe wrote: > >> > > >> > Hi ba3, > >> > > >> > Check out the list of "Direct Known Subclasses" from the SpanQuery > >> > javadocs to see what's available: > >> > > >> > > >> http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/spans/ > >> SpanQuery.html > >> > > >> > SpanRegexQuery may be what you're looking for: > >> > > >> > > >> http://lucene.apache.org/java/2_4_1/api/org/apache/lucene/search/regex/ > >> SpanRegexQuery.html > >> > > >> > > >> > Steve > >> > > >> >> -----Original Message----- > >> >> From: ba3 [mailto:sbadhrin...@gmail.com] > >> >> Sent: Tuesday, July 28, 2009 12:53 PM > >> >> To: java-user@lucene.apache.org > >> >> Subject: Re: Multiline Regex with Lucene > >> >> > >> >> > >> >> Hi, > >> >> > >> >> Thanks for the pointers. I will try the span queries. > >> >> But can span query support regexp as a term ? > >> >> > >> >> Also for more details in the problem : > >> >> The problem is like this: > >> >> find a search string inside a block of statements. > >> >> The block starts with a string and ends with a character. > >> >> > >> >> -- Regards > >> >> Ba3 > >> >> > >> >> > >> >> > >> >> Erick Erickson wrote: > >> >> > > >> >> > I doubt you're thinking in terms of tokens. Your inputstream is > >> broken > >> >> up > >> >> > into tokens (think of them as words, > >> >> > depending upon the analyzer) and regex searchers are > >> >> > confined to those *tokens*. So the concept of a multi-line > >> >> > regex in a search is kind of ...odd... > >> >> > > >> >> > You could possibly index your input as UN_TOKENIZED, but > >> >> > I really have no clue what Lucene would do with that. I think > >> >> > you're off in uncharted territory here. > >> >> > > >> >> > Perhaps a better thing would be for you to explain *why* you > >> >> > want to do this and perhaps folks can come up with some > >> >> > suggestions, I suspect this may be an XY problem, see > >> >> > http://www.perlmonks.org/index.pl?node_id=542341 > >> >> > > >> >> > Best > >> >> > Erick > >> >> > > >> >> > On Sun, Jul 26, 2009 at 9:52 AM, ba3 <sbadhrin...@gmail.com> > >> wrote: > >> >> > > >> >> >> > >> >> >> I was trying to do a regex search with the lucene and > >> >> >> JavaUtilRegexCapabilities. > >> >> >> The code used is : > >> >> >> RegexQuery query = new RegexQuery(new > >> >> >> Term("contents","(?m)hello.*(\r[^#]*)This is to be > >> >> >> searched.*(\r[^#]*)#")); > >> >> >> query.setRegexImplementation(new JavaUtilRegexCapabilities()); > >> >> >> > >> >> >> I verified the regex in : http://www.gskinner.com/RegExr/ [with > >> the > >> >> >> multi > >> >> >> line checked] > >> >> >> In lucene though there are no hits. Can you please point me in > >> the > >> >> right > >> >> >> direction > >> >> >> > >> >> >> -- Rgds > >> >> >> Ba3 > >> >> >> > >> >> >> Regex : > >> >> >> hello.*(\r[^#]*)This is to be searched.*(\r[^#]*)# > >> >> >> > >> >> >> Content : > >> >> >> hello world > >> >> >> This is to be searched > >> >> >> # > >> >> >> Test line should not be selected > >> >> >> hello > >> >> >> This should not work > >> >> >> some other lines > >> >> >> # > >> >> >> Not to be selected > >> >> >> hello world > >> >> >> Some lines > >> >> >> This is to be searched > >> >> >> Some lines > >> >> >> # > >> >> >> hello earth > >> >> >> some lines > >> >> >> # > >> >> >> -- > >> >> >> View this message in context: > >> >> >> > >> >> http://www.nabble.com/Multiline-Regex-with-Lucene- > >> tp24667109p24667109.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 > >> >> >> > >> >> >> > >> >> > > >> >> > > >> >> > >> >> -- > >> >> View this message in context: http://www.nabble.com/Multiline-Regex- > >> with- > >> >> Lucene-tp24667109p24703547.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 > >> > > >> > > >> > --------------------------------------------------------------------- > >> > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > >> > For additional commands, e-mail: java-user-h...@lucene.apache.org > >> > > >> > > >> > > >> > >> -- > >> View this message in context: http://www.nabble.com/Multiline-Regex- > >> with-Lucene-tp24667109p24711445.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 > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > > > > -- > View this message in context: > http://www.nabble.com/Multiline-Regex-with-Lucene-tp24667109p24723404.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 > >
