Examples of AtomicReader

org.apache.lucene.index.AtomicReader
{@code AtomicReader} is an abstract class, providing an interface for accessing anindex. Search of an index is done entirely through this abstract interface, so that any subclass which implements it is searchable. IndexReaders implemented by this subclass do not consist of several sub-readers, they are atomic. They support retrieval of stored fields, doc values, terms, and postings.
For efficiency, in this API documents are often referred to via document numbers, non-negative integers which each name a unique document in the index. These document numbers are ephemeral -- they may change as documents are added to and deleted from an index. Clients should thus not rely on a given document having the same number between sessions.

NOTE: {@link IndexReader} instances are completely threadsafe, meaning multiple threads can call any of its methods, concurrently. If your application requires external synchronization, you should not synchronize on the IndexReader instance; use your own (non-Lucene) objects instead.

Examples of org.apache.lucene.index.AtomicReader

    if (startWith == null) {
      startWith = "";
    }
    Term term = getTerm(columnFamily, columnName, startWith);
    List<String> terms = new ArrayList<String>(size);
    AtomicReader areader = BlurUtil.getAtomicReader(reader);
    Terms termsAll = areader.terms(term.field());
    TermsEnum termEnum = termsAll.iterator(null);
    BytesRef currentTermText;
    while ((currentTermText = termEnum.next()) != null) {
      terms.add(currentTermText.utf8ToString());
      if (terms.size() >= size) {

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Examples of org.apache.lucene.index.AtomicReader

          dims[dim] = new DrillSidewaysScorer.DocsEnumsAndFreq();
          dims[dim].sidewaysCollector = drillSidewaysCollectors[dim];
          String field = drillDownTerms[dim][0].field();
          dims[dim].dim = drillDownTerms[dim][0].text();
          if (lastField == null || !lastField.equals(field)) {
            AtomicReader reader = context.reader();
            Terms terms = reader.terms(field);
            if (terms != null) {
              termsEnum = terms.iterator(null);
            } else {
              termsEnum = null;
            }

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Examples of org.apache.lucene.index.AtomicReader

    }
    
    DocIdSetIterator it = set.iterator();
    int doc = it.nextDoc(); 
    for (AtomicReaderContext context : reader.leaves()) {
      AtomicReader r = context.reader();
      final int maxDoc = r.maxDoc() + context.docBase;
      if (doc >= maxDoc) { // skip this segment
        continue;
      }
      if (!r.hasDeletions()) { // skip all docs that belong to this reader as it has no deletions
        while ((doc = it.nextDoc()) < maxDoc) {}
        continue;
      }
      Bits liveDocs = r.getLiveDocs();
      do {
        if (!liveDocs.get(doc - context.docBase)) {
          set.clear(doc);
        }
      } while ((doc = it.nextDoc()) < maxDoc);

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Examples of org.apache.lucene.index.AtomicReader

      }
      bi.setText(content);
      int doc = docids[i];
      int leaf = ReaderUtil.subIndex(doc, leaves);
      AtomicReaderContext subContext = leaves.get(leaf);
      AtomicReader r = subContext.reader();
      Terms t = r.terms(field);
      if (t == null) {
        continue; // nothing to do
      }
      if (leaf != lastLeaf) {
        termsEnum = t.iterator(null);

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Examples of org.apache.lucene.index.AtomicReader

  public void testEmptyIndex() throws Exception {
    Directory dir = newDirectory();
    IndexWriter writer= new IndexWriter(dir, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random())).setMaxBufferedDocs(500));
    writer.close();
    IndexReader r = DirectoryReader.open(dir);
    AtomicReader reader = SlowCompositeReaderWrapper.wrap(r);
    FieldCache.DEFAULT.getTerms(reader, "foobar", true);
    FieldCache.DEFAULT.getTermsIndex(reader, "foobar");
    FieldCache.DEFAULT.purgeByCacheKey(reader.getCoreCacheKey());
    r.close();
    dir.close();
  }

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Examples of org.apache.lucene.index.AtomicReader

      doc.add(new SortedSetDocValuesField("sortedset", new BytesRef("sortedset value2")));
    }
    iw.addDocument(doc);
    DirectoryReader ir = iw.getReader();
    iw.close();
    AtomicReader ar = getOnlySegmentReader(ir);
    
    BytesRef scratch = new BytesRef();
    
    // Binary type: can be retrieved via getTerms()
    try {

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Examples of org.apache.lucene.index.AtomicReader

    Document doc = new Document();
    iw.addDocument(doc);
    DirectoryReader ir = iw.getReader();
    iw.close();
    
    AtomicReader ar = getOnlySegmentReader(ir);
    
    final FieldCache cache = FieldCache.DEFAULT;
    cache.purgeAllCaches();
    assertEquals(0, cache.getCacheEntries().length);

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Examples of org.apache.lucene.index.AtomicReader

    doc.add(new StoredField("bogusbits", "bogus"));
    iw.addDocument(doc);
    DirectoryReader ir = iw.getReader();
    iw.close();
    
    AtomicReader ar = getOnlySegmentReader(ir);
    
    final FieldCache cache = FieldCache.DEFAULT;
    cache.purgeAllCaches();
    assertEquals(0, cache.getCacheEntries().length);

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Examples of org.apache.lucene.index.AtomicReader

   * <p>
   * The default implementation calls {@link #addSortedField}, passing
   * an Iterable that merges ordinals and values and filters deleted documents .
   */
  public void mergeSortedField(FieldInfo fieldInfo, final MergeState mergeState, List<SortedDocValues> toMerge) throws IOException {
    final AtomicReader readers[] = mergeState.readers.toArray(new AtomicReader[toMerge.size()]);
    final SortedDocValues dvs[] = toMerge.toArray(new SortedDocValues[toMerge.size()]);
    
    // step 1: iterate thru each sub and mark terms still in use
    TermsEnum liveTerms[] = new TermsEnum[dvs.length];
    for (int sub = 0; sub < liveTerms.length; sub++) {
      AtomicReader reader = readers[sub];
      SortedDocValues dv = dvs[sub];
      Bits liveDocs = reader.getLiveDocs();
      if (liveDocs == null) {
        liveTerms[sub] = dv.termsEnum();
      } else {
        OpenBitSet bitset = new OpenBitSet(dv.getValueCount());
        for (int i = 0; i < reader.maxDoc(); i++) {
          if (liveDocs.get(i)) {
            int ord = dv.getOrd(i);
            if (ord >= 0) {
              bitset.set(ord);
            }

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Examples of org.apache.lucene.index.AtomicReader

   * <p>
   * The default implementation calls {@link #addSortedSetField}, passing
   * an Iterable that merges ordinals and values and filters deleted documents .
   */
  public void mergeSortedSetField(FieldInfo fieldInfo, final MergeState mergeState, List<SortedSetDocValues> toMerge) throws IOException {
    final AtomicReader readers[] = mergeState.readers.toArray(new AtomicReader[toMerge.size()]);
    final SortedSetDocValues dvs[] = toMerge.toArray(new SortedSetDocValues[toMerge.size()]);
    
    // step 1: iterate thru each sub and mark terms still in use
    TermsEnum liveTerms[] = new TermsEnum[dvs.length];
    for (int sub = 0; sub < liveTerms.length; sub++) {
      AtomicReader reader = readers[sub];
      SortedSetDocValues dv = dvs[sub];
      Bits liveDocs = reader.getLiveDocs();
      if (liveDocs == null) {
        liveTerms[sub] = dv.termsEnum();
      } else {
        OpenBitSet bitset = new OpenBitSet(dv.getValueCount());
        for (int i = 0; i < reader.maxDoc(); i++) {
          if (liveDocs.get(i)) {
            dv.setDocument(i);
            long ord;
            while ((ord = dv.nextOrd()) != SortedSetDocValues.NO_MORE_ORDS) {
              bitset.set(ord);

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