Remember, though, that this won't work *unless* there is a value to exclude, thus several of the suggestions to index a special token in the relevant field that's guaranteed to not be something you ever want to legitimately search on.
Erick On Wed, Mar 4, 2009 at 2:10 PM, Uwe Schindler <u...@thetaphi.de> wrote: > To find all document, that not contain a term, you can combine a > MatchAllDocsQuery with BooleanClause.Occur.MUST, combined with one or more > TermQueries with BooleanClause.Occur.MUST_NOT (the terms you do not want in > the documents). > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > > > -----Original Message----- > > From: shashi....@gmail.com [mailto:shashi....@gmail.com] On Behalf Of > > Shashi Kant > > Sent: Wednesday, March 04, 2009 7:31 PM > > To: java-user@lucene.apache.org > > Subject: Re: Optimum way to find all document without particular field > > > > A simple solution would be to store the string "NULL" instead of null and > > then query. > > > > > > On Wed, Mar 4, 2009 at 1:26 PM, Chris Lu <chris...@gmail.com> wrote: > > > > > Allahbaksh, > > > > > > If you ONLY want to find all document with a particular field that is > > not > > > null, you can loop through the TermEnum and TermDocs to find all the > > > document ids. > > > But this can not easily be combined with other queries. > > > > > > -- > > > > > > Chris Lu > > > > > > ------------------------- > > > > > > Instant Scalable Full-Text Search On Any Database/Application > > > > > > site: http://www.dbsight.net > > > > > > demo: http://search.dbsight.com > > > > > > Lucene Database Search in 3 minutes: > > > > > > http://wiki.dbsight.com/index.php?title=Create_Lucene_Database_Search_in_3 > > _minutes > > > > > > DBSight customer, a shopping comparison site, (anonymous per request) > > got > > > 2.6 Million Euro funding! > > > > > > > > > > > > > > > Allahbaksh Mohammedali Asadullah wrote: > > > > > >> Hi, > > >> What is the optimum way in which I can find all the document which has > > >> particular field in it. > > >> > > >> Example > > >> I want to find all the document in which the field text is not null. > > >> > > >> Regards, > > >> Allahbaksh > > >> > > >> Allahbaksh Mohammedali Asadullah, > > >> Software Engineering & Technology Labs, > > >> Infosys Technolgies Limited, Electronics City, > > >> Hosur Road, Bangalore 560 100, India. > > >> *Board: +91-80-28520261 | Extn: 53915 | Direct: 41173915. > > >> Fax: +91-80-28520362 | Mobile: +91-9845505322. > > >> http://setlabs/slim/ > > >> http://allahbaksh.blogspot.com<http://allahbaksh.blogspot.com/> > > >> > > >> > > >> > > >> > > >> > > >> **************** CAUTION - Disclaimer ***************** > > >> This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended > > >> solely for the use of the addressee(s). If you are not the intended > > >> recipient, please notify the sender by e-mail and delete the original > > >> message. Further, you are not to copy, disclose, or distribute this e- > > mail > > >> or its contents to any other person and any such actions are unlawful. > > This > > >> e-mail may contain viruses. Infosys has taken every reasonable > > precaution to > > >> minimize this risk, but is not liable for any damage you may sustain > as > > a > > >> result of any virus in this e-mail. You should carry out your own > virus > > >> checks before opening the e-mail or attachment. Infosys reserves the > > right > > >> to monitor and review the content of all messages sent to or from this > > >> e-mail address. Messages sent to or from this e-mail address may be > > stored > > >> on the Infosys e-mail system. > > >> ***INFOSYS******** End of Disclaimer ********INFOSYS*** > > >> > > >> > > >> > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
