Examples of org.apache.lucene.index.IndexReader.termDocs()

Class org.apache.lucene.index.IndexReader

Examples of org.apache.lucene.index.IndexReader.termDocs()

org.apache.lucene.index.IndexReader.termDocs()
Returns an enumeration of all the documents which contain term. For each document, the document number, the frequency of the term in that document is also provided, for use in search scoring. If term is null, then all non-deleted docs are returned with freq=1. Thus, this method implements the mapping:
The enumeration is ordered by document number. Each document number is greater than all that precede it in the enumeration. @throws IOException if there is a low-level IO error

    try {
      boolean exists = IndexReader.indexExists(indexDirectory);
      if (exists == true) {
        reader = IndexReader.open(indexDirectory);
        Term key = new Term(DocumentCreator.FIELD_URL_MD5, urlHash);
        termDocs = reader.termDocs(key);
        boolean found = false;
        while (termDocs.next() && found == false) {
          int pos = termDocs.doc();
          // use FieldSelector for more efficient loading of Fields.
          // load only what's needed to determine a leading document

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    try {
      boolean exists = IndexReader.indexExists(indexDirectory);
      if (exists == true) {
        reader = IndexReader.open(indexDirectory);
        Term key = new Term(DocumentCreator.FIELD_URL_MD5, urlHash);
        termDocs = reader.termDocs(key);
        boolean found = false;
        while (termDocs.next() && found == false) {
          int pos = termDocs.doc();
          // use FieldSelector for more efficient loading of Fields.
          // load only what's needed to determine a leading document

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      assertTrue(aprioriTermEnum.docFreq() == testTermEnum.docFreq());


      // compare termDocs seeking


      TermDocs aprioriTermDocsSeeker = aprioriReader.termDocs(aprioriTermEnum.term());
      TermDocs testTermDocsSeeker = testReader.termDocs(testTermEnum.term());


      while (aprioriTermDocsSeeker.next()) {
        assertTrue(testTermDocsSeeker.skipTo(aprioriTermDocsSeeker.doc()));
        assertEquals(aprioriTermDocsSeeker.doc(), testTermDocsSeeker.doc());
      }

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      // compare documents per term


      assertEquals(aprioriReader.docFreq(aprioriTermEnum.term()), testReader.docFreq(testTermEnum.term()));


      TermDocs aprioriTermDocs = aprioriReader.termDocs(aprioriTermEnum.term());
      TermDocs testTermDocs = testReader.termDocs(testTermEnum.term());


      while (true) {
        if (!aprioriTermDocs.next()) {
          assertFalse(testTermDocs.next());
          break;

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    // Separately count how many tokens are actually in the index:
    IndexReader reader = IndexReader.open(benchmark.getRunData().getDirectory(), true);
    assertEquals(NUM_DOCS, reader.numDocs());


    TermEnum terms = reader.terms();
    TermDocs termDocs = reader.termDocs();
    int totalTokenCount2 = 0;
    while(terms.next()) {
      termDocs.seek(terms.term());
      while(termDocs.next())
        totalTokenCount2 += termDocs.freq();

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    doc.add(new Field("partnum", "Q37", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);
    writer.close();


    IndexReader reader = IndexReader.open(dir, true);
    TermDocs td = reader.termDocs(new Term("partnum", "Q36"));
    assertTrue(td.next());
    td = reader.termDocs(new Term("partnum", "Q37"));
    assertTrue(td.next());
  }

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    writer.close();


    IndexReader reader = IndexReader.open(dir, true);
    TermDocs td = reader.termDocs(new Term("partnum", "Q36"));
    assertTrue(td.next());
    td = reader.termDocs(new Term("partnum", "Q37"));
    assertTrue(td.next());
  }


  // LUCENE-1441
  public void testOffsets() throws Exception {

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    aprioriTermEnum.close();
    testTermEnum.close();


    TermDocs aprioriTermDocs = aprioriReader.termDocs(t);
    TermDocs testTermDocs = testReader.termDocs(t);


    assertEquals(aprioriTermDocs.next(), testTermDocs.next());
    assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
    assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());

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    // test seek null (AllTermDocs)
    aprioriTermDocs = aprioriReader.termDocs(null);
    testTermDocs = testReader.termDocs(null);


    while (aprioriTermDocs.next()) {
      assertTrue(testTermDocs.next());
      assertEquals(aprioriTermDocs.freq(), testTermDocs.freq());
      assertEquals(aprioriTermDocs.doc(), testTermDocs.doc());

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    testTermDocs.close();




    // test seek default
    aprioriTermDocs = aprioriReader.termDocs();
    testTermDocs = testReader.termDocs();


    // this is invalid use of the API,
    // but if the response differs then it's an indication that something might have changed.
    // in 2.9 and 3.0 the two TermDocs-implementations returned different values at this point.
//    assertEquals("Descripency during invalid use of the TermDocs API, see comments in test code for details.",

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