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From JensBurkhardt <jensburkha...@web.de>
Subject Re: MultiFieldQueryParser - BooleanClause.Occur
Date Mon, 03 Mar 2008 10:15:51 GMT

Hey,

Thanks a lot! Everything works pretty well :-) .

Greetings
Jens


Donna L Gresh wrote:
> 
> Paul-
> Thanks (that was one of my ulterior motives for answering the question; I 
> figured if there was something inefficient or unnecessary about my 
> approach, I'd hear about it :) )
> 
> Donna Gresh
> 
> 
> Paul Elschot <paul.elschot@xs4all.nl> wrote on 02/29/2008 01:42:57 PM:
> 
>> Op Friday 29 February 2008 18:04:47 schreef Donna L Gresh:
>> > I believe something like the following will do what you want:
>> >
>> > QueryParser parserTitle = new QueryParser("title", analyzer);
>> > QueryParser parserAuthor = new QueryParser("author", analyzer);
>> >
>> > BooleanQuery overallquery = new BooleanQuery();
>> >
>> > BolleanQuery firstQuery = new BooleanQuery();
>> > Query q1= parserTitle.parse(term1);
>> > Query q2= parserAuthor.parse(term1);
>> > firstQuery.add(q1, BooleanClause.Occur.SHOULD); //should is like an
>> > OR firstQuery.add(q2, BooleanClause.Occur.SHOULD);
>> >
>> > BolleanQuery secondQuery = new BooleanQuery();
>> > Query q3= parserTitle.parse(term2);
>> > Query q4= parserAuthor.parse(term2);
>> > secondQuery.add(q3, BooleanClause.Occur.SHOULD);
>> > secondQuery.add(q4, BooleanClause.Occur.SHOULD);
>> >
>> > overallquery.add(firstQuery, BooleanClause.Occur.MUST); //must is
>> > like an AND
>> > overallquery.add(secondQuery, BooleanClause.Occur.MUST):
>> 
>> There is no need for a QueryParser in this case when using a
>> TermQuery instead of a Query for q1, q2, q3 and q4:
>> 
>> TermQuery q1 = new TermQuery(new Term("title", "term1"));
>> 
>> Regards,
>> Paul Elschot
>> 
>> 
>> >
>> > Donna  Gresh
>> >
>> > JensBurkhardt <jensburkhardt@web.de> wrote on 02/29/2008 10:46:51 AM:
>> > > Hey everybody,
>> > >
>> > > I read that it's possible to generate a query like:
>> > >
>> > > (title:term1 OR author:term1) AND (title:term2 OR author:term2)
>> > >
>> > > and so on. I also read that BooleanClause.Occur should help me
>> > > handle
>> >
>> > this
>> >
>> > > problem.
>> > > But i have to admit that i totally don't understand how to use it.
>> > > If someone can explain or has a link to an explanation, this would
>> > > be terrific
>> > >
>> > > Thanks and best regards
>> > >
>> > > Jens Burkhardt
>> > > --
>> > > View this message in context: http://www.nabble.
>> > > com/MultiFieldQueryParser---BooleanClause.Occur-tp15761243p15761243
>> > >.html Sent from the Lucene - Java Users mailing list archive at
>> > > Nabble.com.
>> > >
>> > >
>> > > -------------------------------------------------------------------
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>> 
>> 
>> 
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> 
> 

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