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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: Optimum way to find all document without particular field
Date Wed, 04 Mar 2009 19:10:20 GMT
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: uwe@thetaphi.de

> -----Original Message-----
> From: shashi.mit@gmail.com [mailto:shashi.mit@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.lu@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
> >
> > -------------------------
> >
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> >
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> >
> > 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/>
> >>
> >>
> >>
> >>
> >>
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