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

List of usage examples for org.apache.lucene.search IndexSearcher IndexSearcher

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Introduction

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

Prototype

public IndexSearcher(IndexReaderContext context)

Source Link

Document

Creates a searcher searching the provided top-level IndexReaderContext .

Usage

From source file:aos.lucene.search.ext.payloads.PayloadsTest.java

License:Apache License

public void testPayloadTermQuery() throws Throwable {
    addDoc("Hurricane warning",
            "Bulletin: A hurricane warning was issued at " + "6 AM for the outer great banks");
    addDoc("Warning label maker", "The warning label maker is a delightful toy for "
            + "your precocious seven year old's warning needs");
    addDoc("Tornado warning",
            "Bulletin: There is a tornado warning for " + "Worcester county until 6 PM today");

    IndexReader r = writer.getReader();/*from www  . j  av a 2 s  .  c o  m*/
    writer.close();

    IndexSearcher searcher = new IndexSearcher(r);

    searcher.setSimilarity(new BoostingSimilarity());

    Term warning = new Term("contents", "warning");

    Query query1 = new TermQuery(warning);
    LOGGER.info("\nTermQuery results:");
    TopDocs hits = searcher.search(query1, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #B
            searcher.doc(hits.scoreDocs[0].doc).get("title")); // #B

    Query query2 = new PayloadTermQuery(warning, new AveragePayloadFunction());
    LOGGER.info("\nPayloadTermQuery results:");
    hits = searcher.search(query2, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #C
            searcher.doc(hits.scoreDocs[2].doc).get("title")); // #C
    r.close();
    searcher.close();
}

From source file:aos.lucene.search.ext.sorting.DistanceSortingTest.java

License:Apache License

protected void setUp() throws Exception {
    directory = new RAMDirectory();
    IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(Version.LUCENE_46),
            IndexWriter.MaxFieldLength.UNLIMITED);
    addPoint(writer, "El Charro", "restaurant", 1, 2);
    addPoint(writer, "Cafe Poca Cosa", "restaurant", 5, 9);
    addPoint(writer, "Los Betos", "restaurant", 9, 6);
    addPoint(writer, "Nico's Taco Shop", "restaurant", 3, 8);

    writer.close();/*  ww w. java  2 s . c o m*/

    searcher = new IndexSearcher(directory);

    query = new TermQuery(new Term("type", "restaurant"));
}

From source file:aos.lucene.search.msc.BasicSearchingTest.java

License:Apache License

public void testTerm() throws Exception {

    Directory dir = FSDirectory.open(new File("target/index"));
    IndexReader reader = DirectoryReader.open(dir);
    IndexSearcher searcher = new IndexSearcher(reader);

    Term t = new Term("subject", "ant");
    Query query = new TermQuery(t);
    TopDocs docs = searcher.search(query, 10);
    assertEquals("Ant in Action", 1, docs.totalHits);

    t = new Term("subject", "junit");
    docs = searcher.search(new TermQuery(t), 10);
    assertEquals("Ant in Action, " + "JUnit in Action, Second Edition", 2, docs.totalHits);

    reader.close();/*from w  w w. java 2 s . c  o m*/
    dir.close();
}

From source file:aos.lucene.search.msc.BasicSearchingTest.java

License:Apache License

/**
 * #A Obtain directory from TestUtil #B Create IndexSearcher #C Confirm one
 * hit for "ant" #D Confirm two hits for "junit"
 *///from w  w w .  j  a v a  2s .c om
public void testKeyword() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);

    Term t = new Term("isbn", "9781935182023");
    Query query = new TermQuery(t);
    TopDocs docs = searcher.search(query, 10);
    assertEquals("JUnit in Action, Second Edition", 1, docs.totalHits);

    searcher.close();
    dir.close();
}

From source file:aos.lucene.search.msc.BasicSearchingTest.java

License:Apache License

public void testQueryParser() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);

    QueryParser parser = new QueryParser(Version.LUCENE_46, "contents", new SimpleAnalyzer());

    Query query = parser.parse("+JUNIT +ANT -MOCK");
    TopDocs docs = searcher.search(query, 10);
    assertEquals(1, docs.totalHits);//  w w  w  . ja v  a  2 s.  c  om
    Document d = searcher.doc(docs.scoreDocs[0].doc);
    assertEquals("Ant in Action", d.get("title"));

    query = parser.parse("mock OR junit");
    docs = searcher.search(query, 10);
    assertEquals("Ant in Action, " + "JUnit in Action, Second Edition", 2, docs.totalHits);

    searcher.close();
    dir.close();
}

From source file:aos.lucene.search.msc.BooleanQueryTest.java

License:Apache License

public void testAnd() throws Exception {
    TermQuery searchingBooks = new TermQuery(new Term("subject", "search")); //#1

    Query books2010 = //#2
            NumericRangeQuery.newIntRange("pubmonth", 201001, //#2
                    201012, //#2
                    true, true); //#2

    BooleanQuery searchingBooks2010 = new BooleanQuery(); //#3
    searchingBooks2010.add(searchingBooks, BooleanClause.Occur.MUST); //#3
    searchingBooks2010.add(books2010, BooleanClause.Occur.MUST); //#3

    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    TopDocs matches = searcher.search(searchingBooks2010, 10);

    assertTrue(TestUtil.hitsIncludeTitle(searcher, matches, "Lucene in Action, Second Edition"));
    searcher.close();/*from  w  ww  . ja v  a 2  s  .c om*/
    dir.close();
}

From source file:aos.lucene.search.msc.BooleanQueryTest.java

License:Apache License

public void testOr() throws Exception {
    TermQuery methodologyBooks = new TermQuery( //
            new Term("category", //
                    "/technology/computers/programming/methodology")); //

    TermQuery easternPhilosophyBooks = new TermQuery( //
            new Term("category", //
                    "/philosophy/eastern")); //

    BooleanQuery enlightenmentBooks = new BooleanQuery(); //
    enlightenmentBooks.add(methodologyBooks, //
            BooleanClause.Occur.SHOULD); //
    enlightenmentBooks.add(easternPhilosophyBooks, //
            BooleanClause.Occur.SHOULD); //

    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    TopDocs matches = searcher.search(enlightenmentBooks, 10);
    LOGGER.info("or = " + enlightenmentBooks);

    assertTrue(TestUtil.hitsIncludeTitle(searcher, matches, "Extreme Programming Explained"));
    assertTrue(TestUtil.hitsIncludeTitle(searcher, matches, "Tao Te Ching \u9053\u5FB7\u7D93"));
    searcher.close();//from w  ww  .  j a  v  a2s.c  o m
    dir.close();
}

From source file:aos.lucene.search.msc.Explainer.java

License:Apache License

public static void main(String[] args) throws Exception {
    if (args.length != 2) {
        System.err.println("Usage: Explainer <index dir> <query>");
        System.exit(1);// w  w w  .  ja v  a 2  s . c o m
    }

    String indexDir = args[0];
    String queryExpression = args[1];

    Directory directory = FSDirectory.open(new File(indexDir));
    QueryParser parser = new QueryParser(Version.LUCENE_46, "contents", new SimpleAnalyzer());
    Query query = parser.parse(queryExpression);

    LOGGER.info("Query: " + queryExpression);

    IndexSearcher searcher = new IndexSearcher(directory);
    TopDocs topDocs = searcher.search(query, 10);

    for (ScoreDoc match : topDocs.scoreDocs) {
        Explanation explanation = searcher.explain(query, match.doc); //#A

        LOGGER.info("----------");
        Document doc = searcher.doc(match.doc);
        LOGGER.info(doc.get("title"));
        LOGGER.info(explanation.toString()); //#B
    }
    searcher.close();
    directory.close();
}

From source file:aos.lucene.search.msc.Fragments.java

License:Apache License

public void openSearcher() throws Exception {
    Directory dir = FSDirectory.open(new File("/path/to/index"));
    IndexReader reader = DirectoryReader.open(dir);
    IndexSearcher searcher = new IndexSearcher(reader);
}

From source file:aos.lucene.search.msc.Fragments.java

License:Apache License

public void nrtReader() throws Exception {
    IndexReader reader = null;// ww  w  .j  av a 2 s  .c o  m
    IndexSearcher searcher;

    IndexReader newReader = reader.reopen();
    if (reader != newReader) {
        reader.close();
        reader = newReader;
        searcher = new IndexSearcher(reader);
    }

}