Example usage for org.apache.lucene.index DirectoryReader open

Introduction

In this page you can find the example usage for org.apache.lucene.index DirectoryReader open.

Prototype

public static DirectoryReader open(final IndexCommit commit) throws IOException 

Source Link

Document

Expert: returns an IndexReader reading the index in the given IndexCommit .

Usage

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

License:Apache License

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

    TopDocs matches = searcher.search(query, 10);
    /*//w  w  w  . j av  a2 s.com
    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);

    dir.close();
}

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

License:Apache License

public void testExclusive() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(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   www  .j a  va 2  s. c  o  m

    dir.close();
}

---

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

License:Apache License

protected void setUp() throws IOException {
    dir = new RAMDirectory();

    IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_46,
            new WhitespaceAnalyzer(Version.LUCENE_46));

    IndexWriter writer = new IndexWriter(dir, config);
    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);/*ww w  .j  ava 2  s. c om*/
    writer.close();

    searcher = new IndexSearcher(DirectoryReader.open(dir));
}

---

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

License:Apache License

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

    dir.close();/*w  w  w. j av a 2 s  . c  om*/
}

---

From source file:com.mathworks.xzheng.searching.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(DirectoryReader.open(directory));
    searcher.setSimilarity(new SimpleSimilarity());

    Query query = new TermQuery(new Term("contents", "x"));
    Explanation explanation = searcher.explain(query, 0);
    System.out.println(explanation);

    TopDocs matches = searcher.search(query, 10);
    assertEquals(1, matches.totalHits);/*from ww  w .  j a va2s .  c  o  m*/

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

}

---

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

}

---

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

}

---

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

License:Apache License

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

    TopDocs matches = searcher.search(query, 100);
    /*//  w  ww .ja  va2s.  co  m
    for(int i=0;i<matches.totalHits;i++) {
      System.out.println("match " + i + ": " + searcher.doc(matches.scoreDocs[i].doc).get("title2"));
    }
    */
    assertEquals(3, matches.totalHits);

    dir.close();
}

---

From source file:com.mathworks.xzheng.tools.ChainedFilterTest.java

License:Apache License

public void setUp() throws Exception {
    directory = new RAMDirectory();

    IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_46,
            new WhitespaceAnalyzer(Version.LUCENE_46));

    IndexWriter writer = new IndexWriter(directory, config);

    Calendar cal = Calendar.getInstance();
    cal.set(2009, 1, 1, 0, 0); // A

    for (int i = 0; i < MAX; i++) {
        Document doc = new Document();
        doc.add(new Field("key", "" + (i + 1), Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field("owner", (i < MAX / 2) ? "bob" : "sue", Field.Store.YES, Field.Index.NOT_ANALYZED));
        doc.add(new Field("date", DateTools.timeToString(cal.getTimeInMillis(), DateTools.Resolution.DAY),
                Field.Store.YES, Field.Index.NOT_ANALYZED));
        writer.addDocument(doc);/*from w w w .  j  av a 2s  . c  o m*/

        cal.add(Calendar.DATE, 1);
    }

    writer.close();

    searcher = new IndexSearcher(DirectoryReader.open(directory));

    BooleanQuery bq = new BooleanQuery(); // B
    bq.add(new TermQuery(new Term("owner", "bob")), // B
            BooleanClause.Occur.SHOULD); // B
    bq.add(new TermQuery(new Term("owner", "sue")), // B
            BooleanClause.Occur.SHOULD); // B
    query = bq;

    cal.set(2099, 1, 1, 0, 0);
    dateFilter = TermRangeFilter.Less("date", // C
            new BytesRef(DateTools.timeToString( // C
                    cal.getTimeInMillis(), // C
                    DateTools.Resolution.DAY)));// C

    bobFilter = new CachingWrapperFilter( // D
            new QueryWrapperFilter( // D
                    new TermQuery(new Term("owner", "bob")))); // D

    sueFilter = new CachingWrapperFilter( // E
            new QueryWrapperFilter( // E
                    new TermQuery(new Term("owner", "sue")))); // E
}

---

From source file:com.mathworks.xzheng.tools.FastVectorHighlighterSample.java

License:Apache License

static void searchIndex(String filename) throws Exception {
    QueryParser parser = new QueryParser(Version.LUCENE_46, F, analyzer);
    Query query = parser.parse(QUERY);
    FastVectorHighlighter highlighter = getHighlighter(); // #C
    FieldQuery fieldQuery = highlighter.getFieldQuery(query); // #D
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir));
    TopDocs docs = searcher.search(query, 10);

    FileWriter writer = new FileWriter(filename);
    writer.write("<html>");
    writer.write("<body>");
    writer.write("<p>QUERY : " + QUERY + "</p>");
    for (ScoreDoc scoreDoc : docs.scoreDocs) {
        String snippet = highlighter.getBestFragment( // #E
                fieldQuery, searcher.getIndexReader(), // #E
                scoreDoc.doc, F, 100); // #E
        if (snippet != null) {
            writer.write(scoreDoc.doc + " : " + snippet + "<br/>");
        }//from w w w  . j ava2 s.c o m
    }
    writer.write("</body></html>");
    writer.close();

}

---

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