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

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:com.leavesfly.lia.searching.BasicSearchingTest.java

License:Apache License

public void testTerm() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory(); //A
    IndexSearcher searcher = new IndexSearcher(dir); //B

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

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

    searcher.close();// ww w.  ja  v  a 2 s. c  o  m
    dir.close();
}

---

From source file:com.leavesfly.lia.searching.BasicSearchingTest.java

License:Apache License

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();// w ww .j a va 2s .c  o m
    dir.close();
}

---

From source file:com.leavesfly.lia.searching.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_30, //A
            "contents", //A
            new SimpleAnalyzer()); //A

    Query query = parser.parse("+JUNIT +ANT -MOCK"); //B
    TopDocs docs = searcher.search(query, 10);
    assertEquals(1, docs.totalHits);//  ww w  .j  ava2s.com
    Document d = searcher.doc(docs.scoreDocs[0].doc);
    assertEquals("Ant in Action", d.get("title"));

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

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

---

From source file:com.leavesfly.lia.searching.BooleanQueryTest.java

License:Apache License

public void testOr() throws Exception {
    TermQuery methodologyBooks = new TermQuery( // #1
            new Term("category", // #1
                    "/technology/computers/programming/methodology")); // #1

    TermQuery easternPhilosophyBooks = new TermQuery( // #2
            new Term("category", // #2
                    "/philosophy/eastern")); // #2

    BooleanQuery enlightenmentBooks = new BooleanQuery(); // #3
    enlightenmentBooks.add(methodologyBooks, // #3
            BooleanClause.Occur.SHOULD); // #3
    enlightenmentBooks.add(easternPhilosophyBooks, // #3
            BooleanClause.Occur.SHOULD); // #3

    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    TopDocs matches = searcher.search(enlightenmentBooks, 10);
    System.out.println("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  w  w.j av a 2  s  .  c  om
    dir.close();
}

---

From source file:com.leavesfly.lia.searching.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);/*from   w  w w .j  a  v a  2  s.  c om*/
    }

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

    Directory directory = FSDirectory.open(new File(indexDir));
    QueryParser parser = new QueryParser(Version.LUCENE_30, "contents", new SimpleAnalyzer());
    Query query = parser.parse(queryExpression);

    System.out.println("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

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

---

From source file:com.leavesfly.lia.searching.Fragments.java

License:Apache License

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

---

From source file:com.leavesfly.lia.searching.Fragments.java

License:Apache License

public void nrtReader() throws Exception {
    IndexReader reader = null;//from   w  w w .j a  va2  s  .  c o m
    IndexSearcher searcher;
    // START
    IndexReader newReader = reader.reopen();
    if (reader != newReader) {
        reader.close();
        reader = newReader;
        searcher = new IndexSearcher(reader);
    }
    // END
}

---

From source file:com.leavesfly.lia.searching.NearRealTimeTest.java

License:Apache License

public void testNearRealTime() throws Exception {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_30),
            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);//  ww  w . jav a2s . co  m
    }
    IndexReader reader = writer.getReader(); // #1
    IndexSearcher searcher = new IndexSearcher(reader); // #A

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

    writer.deleteDocuments(new Term("id", "7")); // #2

    Document doc = new Document(); // #3
    doc.add(new Field("id", // #3
            "11", // #3
            Field.Store.NO, // #3
            Field.Index.NOT_ANALYZED_NO_NORMS)); // #3
    doc.add(new Field("text", // #3
            "bbb", // #3
            Field.Store.NO, // #3
            Field.Index.ANALYZED)); // #3
    writer.addDocument(doc); // #3

    IndexReader newReader = reader.reopen(); // #4
    assertFalse(reader == newReader); // #5
    reader.close(); // #6
    searcher = new IndexSearcher(newReader);

    TopDocs hits = searcher.search(query, 10); // #7
    assertEquals(9, hits.totalHits); // #7

    query = new TermQuery(new Term("text", "bbb")); // #8
    hits = searcher.search(query, 1); // #8
    assertEquals(1, hits.totalHits); // #8

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

---

From source file:com.leavesfly.lia.searching.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  w w .  ja  v  a 2  s  .c o  m
    for(int i=0;i<matches.totalHits;i++) {
      System.out.println("match " + i + ": " + searcher.doc(matches.scoreDocs[i].doc).get("author"));
    }
    */
    assertEquals(1, matches.totalHits);
    searcher.close();
    dir.close();
}

---

From source file:com.leavesfly.lia.searching.PhraseQueryTest.java

License:Apache License

protected void setUp() throws IOException {
    dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);
    Document doc = new Document();
    doc.add(new Field("field", // 1
            "the quick brown fox jumped over the lazy dog", // 1
            Field.Store.YES, // 1
            Field.Index.ANALYZED)); // 1
    writer.addDocument(doc);//from   w w w. ja v  a  2s  .  c om
    writer.close();

    searcher = new IndexSearcher(dir);
}

---

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