Hi !
I'd like to use the Highlighter class to show a summury highlighted after a search.
But I don't know how to use correctly the Highlighter class.
I found this piece of code which works well.
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public class TestHighlighter {
public static void main(String[] args) {
try {
Analyzer a = new StandardAnalyzer();
Query q = QueryParser.parse("jennifer lopez", "cached", a);
String s =
"the unofficial home page Britney Spears Elizabeth Hurley Kirsten Dunst "
+ "Anna Kournikova Katie Holmes Katherine Heigl Jessica Alba Alyson Hannigan Jennifer "
+ "Lopez Sarah Michelle Gellar";
Highlighter highlighter = new Highlighter(new QueryScorer(q));
TokenStream tokenstream =
a.tokenStream("cached", new java.io.StringReader(s));
String summary = highlighter.getBestFragments(tokenstream, s, 2, "...");
System.out.println("summary : " + summary);
} catch(Exception e) {
e.printStackTrace();
}
}
}
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But I don't know how to adapt it. In fact, I've made a search and I get a Hits
instance. And now, I want to give a highlighted summury of each documents of the hits.
So it must looks like this :
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Highlighter highlighter;
TokenStream tokenstream;
for (int i = 0; i < hits.length(); i++) {
Document doc = hits.doc(i);
String contents = I DON'T KNOW HOW TO GET THE CONTENTS OF MY DOC
highlighter = new Highlighter(new QueryScorer(query));
tokenstream = analyzer.tokenStream("contents", new java.io.StringReader(contents));
String summary = highlighter.getBestFragments(tokenstream, contents, 2, "...");
System.out.println("summary : " + summary);
}
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Here is my questions. First, is it the good method to get a highlighted summury ? And
if it is, how is the best way to get the contents of my document (the same way that I
used to index their contents or another way ?) ?
(To be more precise, I use Lucene to index PDF, DOC, TXT. The size of these document
could be about 5Mo.)
Thanks.
