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

Introduction

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

Prototype

public <C extends Collector, T> T search(Query query, CollectorManager<C, T> collectorManager)
        throws IOException 

Source Link

Document

Lower-level search API.

Usage

From source file:com.mathworks.xzheng.extsearch.collector.CollectorTest.java

License:Apache License

public void testCollecting() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    TermQuery query = new TermQuery(new Term("contents", "junit"));
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir));

    BookLinkCollector collector = new BookLinkCollector();
    searcher.search(query, collector);

    Map<String, String> linkMap = collector.getLinks();
    assertEquals("ant in action", linkMap.get("http://www.manning.com/loughran"));

    TopDocs hits = searcher.search(query, 10);
    TestUtil.dumpHits(searcher, hits);//from w w w . j  a v  a2 s .  c  o m

    dir.close();
}

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From source file:com.mathworks.xzheng.extsearch.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   w  w w. ja  va 2s .  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);
    System.out.println("\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());
    System.out.println("\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();

}

---

From source file:com.mathworks.xzheng.meetlucene.Fragments.java

License:Apache License

public void simpleSearch() throws IOException {
    Directory dir = FSDirectory.open(new File("/tmp/index"));
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir));
    Query q = new TermQuery(new Term("contents", "lucene"));
    TopDocs hits = searcher.search(q, 10);

}

---

From source file:com.mathworks.xzheng.meetlucene.Searcher.java

License:Apache License

public static void search(String indexDir, String q) throws IOException, ParseException {

    Directory dir = FSDirectory.open(new File(indexDir)); //3
    IndexSearcher is = new IndexSearcher(DirectoryReader.open(dir)); //3

    QueryParser parser = new QueryParser(Version.LUCENE_46, // 4
            "contents", //4
            new StandardAnalyzer( //4
                    Version.LUCENE_46)); //4
    Query query = parser.parse(q); //4
    long start = System.currentTimeMillis();
    TopDocs hits = is.search(query, 10); //5
    long end = System.currentTimeMillis();

    System.err.println("Found " + hits.totalHits + //6
            " document(s) (in " + (end - start) + // 6
            " milliseconds) that matched query '" + // 6
            q + "':"); // 6

    for (ScoreDoc scoreDoc : hits.scoreDocs) {
        Document doc = is.doc(scoreDoc.doc); //7
        System.out.println(doc.get("fullpath")); //8
    }//  w  ww.  j a v  a  2  s  .  com

    is.getIndexReader().close(); //9
}

---

From source file:com.mathworks.xzheng.searching.BasicSearchingTest.java

License:Apache License

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

    dir.close();/*from   w w  w. jav  a 2  s  . com*/
}

---

From source file:com.mathworks.xzheng.searching.BasicSearchingTest.java

License:Apache License

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

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

---

From source file:com.mathworks.xzheng.searching.BasicSearchingTest.java

License:Apache License

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

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

    Query query = parser.parse("+JUNIT +ANT -MOCK"); //B
    TopDocs docs = searcher.search(query, 10);
    assertEquals(1, docs.totalHits);/*from  ww w.  ja  v a 2 s .  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);

    dir.close();
}

---

From source file:com.mathworks.xzheng.searching.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(DirectoryReader.open(dir));
    TopDocs matches = searcher.search(searchingBooks2010, 10);

    assertTrue(TestUtil.hitsIncludeTitle(searcher, matches, "Lucene in Action, Second Edition"));

    dir.close();/*from w  ww .j  a  v  a 2 s.  com*/
}

---

From source file:com.mathworks.xzheng.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(DirectoryReader.open(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"));

    dir.close();//from  www . j a  v  a2 s.  co m
}

---

From source file:com.mathworks.xzheng.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  ww . j a v  a  2s  .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(Version.LUCENE_46));
    Query query = parser.parse(queryExpression);

    System.out.println("Query: " + queryExpression);

    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(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
    }

    directory.close();
}

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