Examples of org.apache.lucene.util.BitVector

org.apache.lucene.util.BitVector
Optimized implementation of a vector of bits. This is more-or-less like java.util.BitSet, but also includes the following:
- a count() method, which efficiently computes the number of one bits;
- optimized read from and write to disk;
- inlinable get() method;
- store and load, as bit set or d-gaps, depending on sparseness;

    final FormatPostingsPositionsConsumer posConsumer = docConsumer
            .addDoc(minState.docID, termDocFreq);


    if (minState.docID < delDocLimit) {
        if (state.deletedDocs == null) {
      state.deletedDocs = new BitVector(state.numDocs);
        }
        state.deletedDocs.set(minState.docID);
    }


    final ByteSliceReader prox = minState.prox;

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  public int getDelCount() throws IOException {
    if (delCount == -1) {
      if (hasDeletions()) {
        final String delFileName = getDelFileName();
        delCount = new BitVector(dir, delFileName).count();
      } else
        delCount = 0;
    }
    assert delCount <= docCount;
    return delCount;

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                                                                 pendingDeletes);
      // Apply delete-by-docID now (delete-byDocID only
      // happens when an exception is hit processing that
      // doc, eg if analyzer has some problem w/ the text):
      if (pendingDeletes.docIDs.size() > 0) {
        flushState.deletedDocs = new BitVector(numDocs);
        for(int delDocID : pendingDeletes.docIDs) {
          flushState.deletedDocs.set(delDocID);
        }
        pendingDeletes.bytesUsed.addAndGet(-pendingDeletes.docIDs.size() * BufferedDeletes.BYTES_PER_DEL_DOCID);
        pendingDeletes.docIDs.clear();

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  }


  private void loadDeletedDocs() throws IOException {
    // NOTE: the bitvector is stored using the regular directory, not cfs
    if (hasDeletions(si)) {
      deletedDocs = new BitVector(directory(), si.getDelFileName());
      deletedDocsRef = new AtomicInteger(1);
      assert checkDeletedCounts();
      if (deletedDocs.size() != si.docCount) {
        throw new CorruptIndexException("document count mismatch: deleted docs count " + deletedDocs.size() + " vs segment doc count " + si.docCount + " segment=" + si.name);
      }

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  }


  @Override
  protected void doDelete(int docNum) {
    if (deletedDocs == null) {
      deletedDocs = new BitVector(maxDoc());
      deletedDocsRef = new AtomicInteger(1);
    }
    // there is more than 1 SegmentReader with a reference to this
    // deletedDocs BitVector so decRef the current deletedDocsRef,
    // clone the BitVector, create a new deletedDocsRef

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                                                                 pendingDeletes);
      // Apply delete-by-docID now (delete-byDocID only
      // happens when an exception is hit processing that
      // doc, eg if analyzer has some problem w/ the text):
      if (pendingDeletes.docIDs.size() > 0) {
        flushState.deletedDocs = new BitVector(numDocs);
        for(int delDocID : pendingDeletes.docIDs) {
          flushState.deletedDocs.set(delDocID);
        }
        pendingDeletes.bytesUsed.addAndGet(-pendingDeletes.docIDs.size() * BufferedDeletes.BYTES_PER_DEL_DOCID);
        pendingDeletes.docIDs.clear();

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    SegmentReader sr1 = SegmentReader.getOnlySegmentReader(r1);
    SegmentReader sr2 = (SegmentReader) rs2[0];


    // At this point they share the same BitVector
    assertTrue(sr1.deletedDocs==sr2.deletedDocs);
    final BitVector delDocs = sr1.deletedDocs;
    r1.close();


    r2.deleteDocument(0);
    assertTrue(delDocs==sr2.deletedDocs);
    r2.close();

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            if (minState.docID < delDocLimit) {
              // Mark it deleted.  TODO: we could also skip
              // writing its postings; this would be
              // deterministic (just for this Term's docs).
              if (state.deletedDocs == null) {
                state.deletedDocs = new BitVector(state.numDocs);
              }
              state.deletedDocs.set(minState.docID);
            }


            final ByteSliceReader prox = minState.prox;

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  }


  private void loadDeletedDocs() throws IOException {
    // NOTE: the bitvector is stored using the regular directory, not cfs
    if (hasDeletions(si)) {
      deletedDocs = new BitVector(directory(), si.getDelFileName());
      deletedDocsRef = new Ref();
     
      assert si.getDelCount() == deletedDocs.count() : 
        "delete count mismatch: info=" + si.getDelCount() + " vs BitVector=" + deletedDocs.count();

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    return si.hasSeparateNorms();
  }


  protected void doDelete(int docNum) {
    if (deletedDocs == null) {
      deletedDocs = new BitVector(maxDoc());
      deletedDocsRef = new Ref();
    }
    // there is more than 1 SegmentReader with a reference to this
    // deletedDocs BitVector so decRef the current deletedDocsRef,
    // clone the BitVector, create a new deletedDocsRef

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