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From Celso Fontes <cels...@gmail.com>
Subject Re: How index and search text files in Lucene 3.0.2 ?
Date Fri, 05 Nov 2010 16:08:24 GMT
thanks !

2010/11/5 Uwe Schindler <uwe@thetaphi.de>

> Hi Celso,
>
> just a note, your code makes no sense:
>
> In the constructor of QueryParser you have to give the default field, e.g.
> "content" only - With parse() you have to give the query string (which can
> contain a field name or not): "computer" or alternatively
> "content:computer"
> (which returns equal results because the default field from the ctor is
> content:
>
> QueryParser parser = new QueryParser(Version.LUCENE_30, "content",
> analyzer);
> Query query = parser.parse("computer");
>
> or:
>
> Query query = parser.parse("content:computer");
>
> Uwe
>
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
>
>
> > -----Original Message-----
> > From: Celso Fontes [mailto:celsowm@gmail.com]
> > Sent: Friday, November 05, 2010 5:01 PM
> > To: java-user@lucene.apache.org
> > Subject: Re: How index and search text files in Lucene 3.0.2 ?
> >
> > Thanks Uwe, its works with:
> >
> >             QueryParser parser = new QueryParser(Version.LUCENE_30,
> > "content:computer", analyzer);
> >             Query query = parser.parse("content:computer");
> >
> > But, if i need get results like google in a query like "What is the role
> of PrnP in
> > mad cow disease?"
> >
> > Thanks
> > CElso.
> >
> > 2010/11/5 Uwe Schindler <uwe@thetaphi.de>:
> > > The default field of query parser is wrong:
> > > QueryParser parser = new QueryParser(Version.LUCENE_30, "computer",
> > > analyzer);
> > >
> > > You haven't indexed a field with name "computer". Your query string
> > > does not override the field, so your query is in fact
> "computer:computer".
> > >
> > > A note: It is not recommended to instantiate TopScoreDocCollector
> > > directly for such search cases, just use the IndexSearcher method that
> > > returns TopDocs!
> > >
> > > -----
> > > Uwe Schindler
> > > H.-H.-Meier-Allee 63, D-28213 Bremen
> > > http://www.thetaphi.de
> > > eMail: uwe@thetaphi.de
> > >
> > >> -----Original Message-----
> > >> From: Celso Fontes [mailto:celsowm@gmail.com]
> > >> Sent: Friday, November 05, 2010 3:34 AM
> > >> To: java-user@lucene.apache.org
> > >> Subject: How index and search text files in Lucene 3.0.2 ?
> > >>
> > >> Hi ! I am newbie in lucene, and i have some problems to create a
> > >> simple
> > > code
> > >> to query a text file collection.
> > >>
> > >> My code is this (http://pastebin.com/HqrbBPtp), but does not works.
> > >> What is Wrong?
> > >>
> > >> Thanks,
> > >> Celso.
> > >>
> > >> ---------------------------------------------------------------------
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> > >> For additional commands, e-mail: java-user-help@lucene.apache.org
> > >
> > >
> > >
> > > ---------------------------------------------------------------------
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> > >
> > >
> >
> > ---------------------------------------------------------------------
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>
>
>
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>

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