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Make all searches "AND" by default using QueryParser

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david2011

Post subject: Make all searches "AND" by default using QueryParser

Posted: Wed Nov 30, 2011 5:42 am

Regular

Joined: Tue May 17, 2011 1:45 am
Posts: 52

Hi,

I am using QueryParser for obtaining my query as per the following syntax

org.apache.lucene.search.Query query=new QueryParser(Version.LUCENE_31,field, analyzer).parse(keyword);

However the issue is this that users can enter any kind of values for searching

1) New York AND Park Avenue
2) "New York"
3) Times square

While (1) and (2) above is handled well by QueryParser, (3) is an issue because Query parser is trying to do an OR clause with the words. I would like this to default to as AND i.e Times and Square should occur in all the results found. How do I do this?

Thanks
David

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hardy.ferentschik

Post subject: Re: Make all searches "AND" by default using QueryParser

Posted: Wed Nov 30, 2011 6:24 am

Hibernate Team

Joined: Thu Apr 05, 2007 5:52 am
Posts: 1689
Location: Sweden

Hi,

use QueryParser#setDefaultOperator and make sure you understand all the implications. What behavior do you for example for "New York Park Avenue"?

--Hardy

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hibernator_11

Post subject: Re: Make all searches "AND" by default using QueryParser

Posted: Mon Dec 12, 2011 4:06 am

Regular

Joined: Thu Jun 16, 2011 12:03 pm
Posts: 94

Using BooleanQuery is another option.

In this example, i apply my analyzer to a query string and then i create an and query.

Code:

BooleanQuery andQuery = new BooleanQuery();

                TokenStream tokenStream = analyzer.tokenStream(campos[cont], new StringReader(q));
                
                CharTermAttribute charTermAttribute = tokenStream.getAttribute(CharTermAttribute.class);
    
                while (tokenStream.incrementToken()) 
                {
                    String term = charTermAttribute.toString();
                    andQuery.add(new TermQuery(new Term(campos[cont], term)), Occur.MUST);
                }

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