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.msc.NearRealTimeTest.java

License:Apache License

public void testNearRealTime() throws Exception {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_46),
            IndexWriter.MaxFieldLength.UNLIMITED);
    for (int i = 0; i < 10; i++) {
        Document doc = new Document();
        doc.add(new Field("id", "" + i, Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
        doc.add(new Field("text", "aaa", Field.Store.NO, Field.Index.ANALYZED));
        writer.addDocument(doc);/*  w w  w.j a  va 2  s.c om*/
    }
    IndexReader reader = writer.getReader();
    IndexSearcher searcher = new IndexSearcher(reader);

    Query query = new TermQuery(new Term("text", "aaa"));
    TopDocs docs = searcher.search(query, 1);
    assertEquals(10, docs.totalHits);

    writer.deleteDocuments(new Term("id", "7"));

    Document doc = new Document();
    doc.add(new Field("id", "11", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
    doc.add(new Field("text", "bbb", Field.Store.NO, Field.Index.ANALYZED));
    writer.addDocument(doc);

    IndexReader newReader = reader.reopen();
    assertFalse(reader == newReader);
    reader.close();
    searcher = new IndexSearcher(newReader);

    TopDocs hits = searcher.search(query, 10);
    assertEquals(9, hits.totalHits);

    query = new TermQuery(new Term("text", "bbb"));
    hits = searcher.search(query, 1);
    assertEquals(1, hits.totalHits);

    newReader.close();
    writer.close();
}

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

License:Apache License

public void testInclusive() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    // pub date of TTC was September 2006
    NumericRangeQuery query = NumericRangeQuery.newIntRange("pubmonth", 200605, 200609, true, true);

    TopDocs matches = searcher.search(query, 10);
    /*/*from   w  ww .  j  a v  a 2  s.co m*/
    for(int i=0;i<matches.totalHits;i++) {
      LOGGER.info("match " + i + ": " + searcher.doc(matches.scoreDocs[i].doc).get("author"));
    }
    */
    assertEquals(1, matches.totalHits);
    searcher.close();
    dir.close();
}

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

License:Apache License

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

    // pub date of TTC was September 2006
    NumericRangeQuery query = NumericRangeQuery.newIntRange("pubmonth", 200605, 200609, false, false);
    TopDocs matches = searcher.search(query, 10);
    assertEquals(0, matches.totalHits);//from   w w w  .jav a2  s  .c o  m
    searcher.close();
    dir.close();
}

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

License:Apache License

protected void setUp() throws IOException {
    dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(Version.LUCENE_46),
            IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("field", "the quick brown fox jumped over the lazy dog", Field.Store.YES,
            Field.Index.ANALYZED));
    writer.addDocument(doc);//from www .j av a  2s .c  o m
    writer.close();

    searcher = new IndexSearcher(dir);
}

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

License:Apache License

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

    Term term = new Term("category", //#A
            "/technology/computers/programming"); //#A
    PrefixQuery query = new PrefixQuery(term); //#A

    TopDocs matches = searcher.search(query, 10); //#A
    int programmingAndBelow = matches.totalHits;

    matches = searcher.search(new TermQuery(term), 10); //#B
    int justProgramming = matches.totalHits;

    assertTrue(programmingAndBelow > justProgramming);
    searcher.close();/* w  w  w.  jav  a  2s  .co m*/
    dir.close();
}

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

License:Apache License

protected void setUp() throws Exception {
    analyzer = new WhitespaceAnalyzer(Version.LUCENE_46);
    dir = TestUtil.getBookIndexDirectory();
    searcher = new IndexSearcher(dir);
}

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

License:Apache License

public void testSimple() throws Exception {
    indexSingleFieldDocs(new Field[] { new Field("contents", "x", Field.Store.YES, Field.Index.ANALYZED) });
    IndexSearcher searcher = new IndexSearcher(directory);
    searcher.setSimilarity(new SimpleSimilarity());

    Query query = new TermQuery(new Term("contents", "x"));
    Explanation explanation = searcher.explain(query, 0);
    LOGGER.info(explanation);//from w w  w.j a v a 2 s. c om

    TopDocs matches = searcher.search(query, 10);
    assertEquals(1, matches.totalHits);

    assertEquals(1F, matches.scoreDocs[0].score, 0.0);

    searcher.close();
}

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

License:Apache License

public void testWildcard() throws Exception {
    indexSingleFieldDocs(new Field[] { new Field("contents", "wild", Field.Store.YES, Field.Index.ANALYZED),
            new Field("contents", "child", Field.Store.YES, Field.Index.ANALYZED),
            new Field("contents", "mild", Field.Store.YES, Field.Index.ANALYZED),
            new Field("contents", "mildew", Field.Store.YES, Field.Index.ANALYZED) });

    IndexSearcher searcher = new IndexSearcher(directory);
    Query query = new WildcardQuery(new Term("contents", "?ild*")); //#A
    TopDocs matches = searcher.search(query, 10);
    assertEquals("child no match", 3, matches.totalHits);

    assertEquals("score the same", matches.scoreDocs[0].score, matches.scoreDocs[1].score, 0.0);
    assertEquals("score the same", matches.scoreDocs[1].score, matches.scoreDocs[2].score, 0.0);
    searcher.close();//from   www. j  a v a 2s  .  c  o  m
}

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

License:Apache License

public void testFuzzy() throws Exception {
    indexSingleFieldDocs(new Field[] { new Field("contents", "fuzzy", Field.Store.YES, Field.Index.ANALYZED),
            new Field("contents", "wuzzy", Field.Store.YES, Field.Index.ANALYZED) });

    IndexSearcher searcher = new IndexSearcher(directory);
    Query query = new FuzzyQuery(new Term("contents", "wuzza"));
    TopDocs matches = searcher.search(query, 10);
    assertEquals("both close enough", 2, matches.totalHits);

    assertTrue("wuzzy closer than fuzzy", matches.scoreDocs[0].score != matches.scoreDocs[1].score);

    Document doc = searcher.doc(matches.scoreDocs[0].doc);
    assertEquals("wuzza bear", "wuzzy", doc.get("contents"));
    searcher.close();//w ww .  java2 s.co m
}

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

License:Apache License

public void testTermRangeQuery() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    TermRangeQuery query = new TermRangeQuery("title2", "d", "j", true, true);

    TopDocs matches = searcher.search(query, 100);
    /*/* w  w  w. j  a v  a 2 s .  c o m*/
    for(int i=0;i<matches.totalHits;i++) {
      LOGGER.info("match " + i + ": " + searcher.doc(matches.scoreDocs[i].doc).get("title2"));
    }
    */
    assertEquals(3, matches.totalHits);
    searcher.close();
    dir.close();
}