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Posted to dev@lucene.apache.org by mitu2009 <mu...@gmail.com> on 2009/03/17 15:38:08 UTC

Using Highlighter for highlighting Phrase query

Am using this version of Lucene highlighter.net API. I want to get a phrase
highlighted only when ALL of its words are present in the search
results..But,am not able to do so....for example, if my input search string
is "Leading telecom company", then the API only highlights "telecom" in the
results if the result does not contain the words "leading" and "company"...

Here is the code i'm using:

SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();

            var appData =
(string)AppDomain.CurrentDomain.GetData("DataDirectory");
            var folderpath = System.IO.Path.Combine(appData, "MyFolder");

            indexReader = IndexReader.Open(folderpath);

            Highlighter highlighter = new Highlighter(htmlFormatter, new
QueryScorer(finalQuery.Rewrite(indexReader)));


            highlighter.SetTextFragmenter(new SimpleFragmenter(800));

            int maxNumFragmentsRequired = 5;

            string highlightedText = string.Empty;

            TokenStream tokenStream = this._analyzer.TokenStream(fieldName,
new System.IO.StringReader(fieldText));

            highlightedText = highlighter.GetBestFragments(tokenStream,
fieldText, maxNumFragmentsRequired, "...");

            return highlightedText;

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Sent from the Lucene - Java Developer mailing list archive at Nabble.com.


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Re: Using Highlighter for highlighting Phrase query

Posted by Chris Hostetter <ho...@fucit.org>.
(resending msg from earlier today during @apache mail outage -- i didn't 
get a copy from the list, so i'm assuming no one did)

: Date: Fri, 20 Mar 2009 15:30:27 -0700 (PDT)
: 
: http://people.apache.org/~hossman/#java-dev
: Please Use "java-user@lucene" Not "java-dev@lucene"
: 
: Your question is better suited for the java-user@lucene mailing list ...
: not the java-dev@lucene list.  java-dev is for discussing development of
: the internals of the Lucene Java library ... it is *not* the appropriate
: place to ask questions about how to use the Lucene Java library when
: developing your own applications.  Please resend your message to
: the java-user mailing list, where you are likely to get more/better
: responses since that list also has a larger number of subscribers.
: 
: 
: 
: : Date: Tue, 17 Mar 2009 07:38:08 -0700 (PDT)
: : From: mitu2009 <mu...@gmail.com>
: : Reply-To: java-dev@lucene.apache.org
: : To: java-dev@lucene.apache.org
: : Subject: Using Highlighter for highlighting Phrase query
: : 
: : 
: : Am using this version of Lucene highlighter.net API. I want to get a phrase
: : highlighted only when ALL of its words are present in the search
: : results..But,am not able to do so....for example, if my input search string
: : is "Leading telecom company", then the API only highlights "telecom" in the
: : results if the result does not contain the words "leading" and "company"...
: : 
: : Here is the code i'm using:
: : 
: : SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();
: : 
: :             var appData =
: : (string)AppDomain.CurrentDomain.GetData("DataDirectory");
: :             var folderpath = System.IO.Path.Combine(appData, "MyFolder");
: : 
: :             indexReader = IndexReader.Open(folderpath);
: : 
: :             Highlighter highlighter = new Highlighter(htmlFormatter, new
: : QueryScorer(finalQuery.Rewrite(indexReader)));
: : 
: : 
: :             highlighter.SetTextFragmenter(new SimpleFragmenter(800));
: : 
: :             int maxNumFragmentsRequired = 5;
: : 
: :             string highlightedText = string.Empty;
: : 
: :             TokenStream tokenStream = this._analyzer.TokenStream(fieldName,
: : new System.IO.StringReader(fieldText));
: : 
: :             highlightedText = highlighter.GetBestFragments(tokenStream,
: : fieldText, maxNumFragmentsRequired, "...");
: : 
: :             return highlightedText;
: : 
: : -- 
: : View this message in context: http://www.nabble.com/Using-Highlighter-for-highlighting-Phrase-query-tp22560334p22560334.html
: : Sent from the Lucene - Java Developer mailing list archive at Nabble.com.
: : 
: : 
: : ---------------------------------------------------------------------
: : To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
: : For additional commands, e-mail: java-dev-help@lucene.apache.org
: : 
: 
: 
: 
: -Hoss
: 
: 



-Hoss


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