Example usage for org.apache.lucene.search PositiveScoresOnlyCollector PositiveScoresOnlyCollector

Introduction

In this page you can find the example usage for org.apache.lucene.search PositiveScoresOnlyCollector PositiveScoresOnlyCollector.

Prototype

public PositiveScoresOnlyCollector(Collector in) 

Source Link

Usage

From source file:com.tekstosense.stemmer.index.Indexer.java

License:Open Source License

/**
 * Searcher./*from  w w w .ja va2s  . c o  m*/
 *
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 * @throws QueryNodeException
 *             the query node exception
 * @throws ParseException
 *             the parse exception
 */
private static void searcher() throws IOException, QueryNodeException, ParseException {
    Path indexDirectoryPath = new File(INDEX_PATH).toPath();
    FSDirectory indexDirectory = new SimpleFSDirectory(indexDirectoryPath);
    DirectoryReader ireader = DirectoryReader.open(indexDirectory);
    IndexSearcher isearcher = new IndexSearcher(ireader);
    QueryParser parser = new QueryParser("title", new StandardAnalyzer());
    Query query = parser.parse("\"Lucene in Action\"");

    TopScoreDocCollector collector = TopScoreDocCollector.create(10);
    isearcher.search(query, new PositiveScoresOnlyCollector(collector));
    TopDocs topDocs = collector.topDocs();
    Set<String> fields = new HashSet<String>();
    fields.add("title");
    fields.add("isbn");
    for (ScoreDoc result : topDocs.scoreDocs) {
        Document doc = isearcher.doc(result.doc, fields);

        if (LOGGER.isInfoEnabled()) {

            LOGGER.info("--- Title :  " + doc.getField("title").stringValue() + " ---");
            LOGGER.info("--- ISBN : " + doc.getField("isbn").stringValue() + " ---");
            LOGGER.info(isearcher.explain(query, result.doc));
        }

    }

}

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