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

Class org.apache.lucene.index.IndexReader

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

org.apache.lucene.index.IndexReader.maxDoc()
Returns one greater than the largest possible document number. This may be used to, e.g., determine how big to allocate an array which will have an element for every document number in an index.


    // optionally warm and add num docs traversed to count
    if (withWarm()) {
      Document doc = null;
      Bits liveDocs = MultiFields.getLiveDocs(reader);
      for (int m = 0; m < reader.maxDoc(); m++) {
        if (null == liveDocs || liveDocs.get(m)) {
          doc = reader.document(m);
          res += (doc == null ? 0 : 1);
        }
      }

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        }


        final String printHitsField = getRunData().getConfig().get("print.hits.field", null);
        if (hits != null && printHitsField != null && printHitsField.length() > 0) {
          System.out.println("totalHits = " + hits.totalHits);
          System.out.println("maxDoc()  = " + reader.maxDoc());
          System.out.println("numDocs() = " + reader.numDocs());
          for(int i=0;i<hits.scoreDocs.length;i++) {
            final int docID = hits.scoreDocs[i].doc;
            final Document doc = reader.document(docID);
            System.out.println("  " + i + ": doc=" + docID + " score=" + hits.scoreDocs[i].score + " " + printHitsField + " =" + doc.get(printHitsField));

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    IndexReader reader = w.getReader();
    IndexSearcher indexSearcher = newSearcher(reader);


    w.close();
    int maxDoc = reader.maxDoc();


    Sort sortWithinGroup = new Sort(new SortField("id_1", SortField.Type.INT, true));
    AbstractAllGroupHeadsCollector<?> allGroupHeadsCollector = createRandomCollector(groupField, sortWithinGroup, canUseIDV, valueType);
    indexSearcher.search(new TermQuery(new Term("content", "random")), allGroupHeadsCollector);
    assertTrue(arrayContains(new int[]{2, 3, 5, 7}, allGroupHeadsCollector.retrieveGroupHeads()));

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              terms = null;
            }
          }


          if (VERBOSE) {
            System.out.println("  maxDoc=" + mockReader.maxDoc());
          }


          if (terms != null) {
            if (random().nextBoolean()) {
              query = new TermQuery(new Term("body", terms.get(random().nextInt(terms.size()))));

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      if (random.nextBoolean()) {
        sort = new Sort(sf);
      } else {
        sort = new Sort(sf, SortField.FIELD_DOC);
      }
      final int hitCount = _TestUtil.nextInt(random, 1, r.maxDoc() + 20);
      final RandomFilter f = new RandomFilter(random, random.nextFloat(), docValues);
      int queryType = random.nextInt(3);
      if (queryType == 0) {
        // force out of order
        BooleanQuery bq = new BooleanQuery();

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    // 3. execute the algorithm  (required in every "logic" test)
    Benchmark benchmark = execBenchmark(algLines);


    IndexReader r = IndexReader.open(benchmark.getRunData().getDirectory(), true);
    StringIndex idx = FieldCache.DEFAULT.getStringIndex(r, "country");
    final int maxDoc = r.maxDoc();
    assertEquals(10000, maxDoc);
    for(int i=0;i<10000;i++) {
      assertNotNull("doc " + i + " has null country", idx.lookup[idx.order[i]]);
    }
    r.close();

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            final AtomicReader reader = context.reader();
            DocsEnum termDocsEnum = reader.termDocsEnum(new Term("field", "0"));
            if (termDocsEnum == null) {
              return null; // no docs -- return null
            }
            final BitSet bitSet = new BitSet(reader.maxDoc());
            int d;
            while ((d = termDocsEnum.nextDoc()) != DocsEnum.NO_MORE_DOCS) {
              bitSet.set(d, true);
            }
            return new DocIdSet() {

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    IndexReader r = w.getReader();
    w.close();
    
    IndexSearcher s = new IndexSearcher(r);
    try {
      s.searchAfter(new ScoreDoc(r.maxDoc(), 0.54f), new MatchAllDocsQuery(), 10);
      fail("should have hit IllegalArgumentException when searchAfter exceeds maxDoc");
    } catch (IllegalArgumentException e) {
      // ok
    } finally {
      IOUtils.close(r, dir);

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        new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).
            setMergePolicy(newLogMergePolicy(false)).setCodec(Codec.forName("Lucene40")).setUseCompoundFile(false)
    );
    TestIndexWriterReader.createIndexNoClose(true, "ram", writer);
    IndexReader reader = DirectoryReader.open(writer, true);
    assertEquals(100, reader.maxDoc());
    writer.commit();
    // we should see only fdx,fdt files here
    String[] files = primaryDir.listAll();
    assertTrue(files.length > 0);
    for (int x=0; x < files.length; x++) {

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      final IndexWriter writer = new IndexWriter(dir, config);
      IndexSearcher indexSearcher = obtainSearcher();
      final List<TermsEnum> termsEnums = new ArrayList<TermsEnum>();


      final IndexReader reader = searcher.getIndexReader();
      if (reader.maxDoc() > 0) {
        for (final AtomicReaderContext ctx : reader.leaves()) {
          Terms terms = ctx.reader().terms(F_WORD);
          if (terms != null)
            termsEnums.add(terms.iterator(null));
        }

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