Package org.apache.lucene.index

Examples of org.apache.lucene.index.MultiReader

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  public IndexSearcher(File[] segmentDirs) throws IOException {
    IndexReader[] readers = new IndexReader[segmentDirs.length];
    for (int i = 0; i < segmentDirs.length; i++) {
      readers[i] = IndexReader.open(new File(segmentDirs[i], "index"));
    }
    init(new MultiReader(readers));
  }
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          }
        }
      }
      if (indexes.size() == 0) throw new Exception("No input indexes.");
      IndexReader[] readers = indexes.toArray(new IndexReader[0]);
      reader = new MultiReader(readers);
    }
    if (LOG.isInfoEnabled()) {
      LOG.info(dr + "Opened " + numIdx + " index(es) with total " +
               reader.numDocs() + " documents.");
    }
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    this.conf = conf;
    this.fs = FileSystem.get(conf);
    for (int i = 0; i < indexDirs.length; i++) {
      readers[i] = IndexReader.open(getDirectory(indexDirs[i]));
    }
    init(new MultiReader(readers), conf);
  }
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   * Test that complements works with MultiReader
   */
  @Test
  public void testComplementsWithMultiReader() throws Exception {
    final IndexReader origReader = indexReader;
    indexReader = new MultiReader(origReader);
    try {
      doTestComplements();
    } finally {
      indexReader = origReader;
    }
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    }
   
    IndexWriter writer = new IndexWriter(indexDir, newIndexWriterConfig(TEST_VERSION_CURRENT, null));
    writer.deleteAll();
    try {
      writer.addIndexes(new MultiReader(wrappedLeaves));
      writer.commit();
    } finally {
      reader.close();
      writer.close();
    }
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    d.close();
  }
 
  /** test sorts when there's nothing in the index */
  public void testEmptyIndex() throws Exception {
    IndexSearcher empty = new IndexSearcher(new MultiReader());
    Query query = new TermQuery(new Term("contents", "foo"));
 
    Sort sort = new Sort();
    TopDocs td = empty.search(query, null, 10, sort, true, true);
    assertEquals(0, td.totalHits);
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    w2.addDocument(doc);
    IndexReader reader2 = w2.getReader();
    w2.close();
   
    TermsFilter tf = new TermsFilter(new Term(fieldName, "content1"));
    MultiReader multi = new MultiReader(reader1, reader2);
    for (AtomicReaderContext context : multi.leaves()) {
      DocIdSet docIdSet = tf.getDocIdSet(context, context.reader().getLiveDocs());
      if (context.reader().docFreq(new Term(fieldName, "content1")) == 0) {
        assertNull(docIdSet);
      } else {
        FixedBitSet bits = (FixedBitSet) docIdSet;
        assertTrue("Must be >= 0", bits.cardinality() >= 0);     
      }
    }
    multi.close();
    reader1.close();
    reader2.close();
    rd1.close();
    rd2.close();
  }
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    query.add(new TermQuery(new Term("field", "foo")), BooleanClause.Occur.MUST);
    WildcardQuery wildcardQuery = new WildcardQuery(new Term("field", "ba*"));
    wildcardQuery.setRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
    query.add(wildcardQuery, BooleanClause.Occur.MUST_NOT);
   
    MultiReader multireader = new MultiReader(reader1, reader2);
    IndexSearcher searcher = new IndexSearcher(multireader);
    assertEquals(0, searcher.search(query, 10).totalHits);
   
    final ExecutorService es = Executors.newCachedThreadPool(new NamedThreadFactory("NRT search threads"));
    searcher = new IndexSearcher(multireader, es);
    if (VERBOSE)
      System.out.println("rewritten form: " + searcher.rewrite(query));
    assertEquals(0, searcher.search(query, 10).totalHits);
    es.shutdown();
    es.awaitTermination(1, TimeUnit.SECONDS);

    multireader.close();
    reader1.close();
    reader2.close();
    dir1.close();
    dir2.close();
  }
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@SuppressCodecs({"Lucene3x", "Lucene40", "Lucene41", "Lucene42", "Lucene45", "Lucene46"})
// avoid codecs that don't support sortednumeric
public class TestSortedNumericSortField extends LuceneTestCase {
 
  public void testEmptyIndex() throws Exception {
    IndexSearcher empty = newSearcher(new MultiReader());
    Query query = new TermQuery(new Term("contents", "foo"));
 
    Sort sort = new Sort();
    sort.setSort(new SortedNumericSortField("sortednumeric", SortField.Type.LONG));
    TopDocs td = empty.search(query, null, 10, sort, true, true);
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        unsortedReaders = super.getMergeReaders();
        final AtomicReader atomicView;
        if (unsortedReaders.size() == 1) {
          atomicView = unsortedReaders.get(0);
        } else {
          final IndexReader multiReader = new MultiReader(unsortedReaders.toArray(new AtomicReader[unsortedReaders.size()]));
          atomicView = SlowCompositeReaderWrapper.wrap(multiReader);
        }
        docMap = sorter.sort(atomicView);
        sortedView = SortingAtomicReader.wrap(atomicView, docMap);
      }
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