org.apache.lucene.store.Directory#createOutput

Source File: TestDirectPacked.java From lucene-solr with Apache License 2.0

6 votes

/** simple encode/decode */
public void testSimple() throws Exception {
  Directory dir = newDirectory();
  int bitsPerValue = DirectWriter.bitsRequired(2);
  IndexOutput output = dir.createOutput("foo", IOContext.DEFAULT);
  DirectWriter writer = DirectWriter.getInstance(output, 5, bitsPerValue);
  writer.add(1);
  writer.add(0);
  writer.add(2);
  writer.add(1);
  writer.add(2);
  writer.finish();
  output.close();
  IndexInput input = dir.openInput("foo", IOContext.DEFAULT);
  LongValues reader = DirectReader.getInstance(input.randomAccessSlice(0, input.length()), bitsPerValue, 0);
  assertEquals(1, reader.get(0));
  assertEquals(0, reader.get(1));
  assertEquals(2, reader.get(2));
  assertEquals(1, reader.get(3));
  assertEquals(2, reader.get(4));
  input.close();
  dir.close();
}

Source File: Lucene50LiveDocsFormat.java From lucene-solr with Apache License 2.0

6 votes

@Override
public void writeLiveDocs(Bits bits, Directory dir, SegmentCommitInfo info, int newDelCount, IOContext context) throws IOException {
  long gen = info.getNextDelGen();
  String name = IndexFileNames.fileNameFromGeneration(info.info.name, EXTENSION, gen);
  int delCount = 0;
  try (IndexOutput output = dir.createOutput(name, context)) {
    CodecUtil.writeIndexHeader(output, CODEC_NAME, VERSION_CURRENT, info.info.getId(), Long.toString(gen, Character.MAX_RADIX));
    final int longCount = FixedBitSet.bits2words(bits.length());
    for (int i = 0; i < longCount; ++i) {
      long currentBits = 0;
      for (int j = i << 6, end = Math.min(j + 63, bits.length() - 1); j <= end; ++j) {
        if (bits.get(j)) {
          currentBits |= 1L << j; // mod 64
        } else {
          delCount += 1;
        }
      }
      output.writeLong(currentBits);
    }
    CodecUtil.writeFooter(output);
  }
  if (delCount != info.getDelCount() + newDelCount) {
    throw new CorruptIndexException("bits.deleted=" + delCount + 
        " info.delcount=" + info.getDelCount() + " newdelcount=" + newDelCount, name);
  }
}

Source File: TestIndexedDISI.java From lucene-solr with Apache License 2.0

6 votes

private void assertAdvanceBeyondEnd(BitSet set, Directory dir) throws IOException {
  final int cardinality = set.cardinality();
  final byte denseRankPower = 9; // Not tested here so fixed to isolate factors
  long length;
  int jumpTableentryCount;
  try (IndexOutput out = dir.createOutput("bar", IOContext.DEFAULT)) {
    jumpTableentryCount = IndexedDISI.writeBitSet(new BitSetIterator(set, cardinality), out, denseRankPower);
  }

  try (IndexInput in = dir.openInput("bar", IOContext.DEFAULT)) {
    BitSetIterator disi2 = new BitSetIterator(set, cardinality);
    int doc = disi2.docID();
    int index = 0;
    while (doc < cardinality) {
      doc = disi2.nextDoc();
      index++;
    }

    IndexedDISI disi = new IndexedDISI(in, 0L, in.length(), jumpTableentryCount, denseRankPower, cardinality);
    // Advance 1 docID beyond end
    assertFalse("There should be no set bit beyond the valid docID range", disi.advanceExact(set.length()));
    disi.advance(doc); // Should be the special docID signifyin NO_MORE_DOCS from the BitSetIterator
    assertEquals("The index when advancing beyond the last defined docID should be correct",
        index, disi.index()+1); // disi.index()+1 as the while-loop also counts the NO_MORE_DOCS
  }
}

Source File: TestPackedInts.java From lucene-solr with Apache License 2.0

6 votes

public void testSingleValue() throws Exception {
  for (int bitsPerValue = 1; bitsPerValue <= 64; ++bitsPerValue) {
    Directory dir = newDirectory();
    IndexOutput out = dir.createOutput("out", newIOContext(random()));
    PackedInts.Writer w = PackedInts.getWriter(out, 1, bitsPerValue, PackedInts.DEFAULT);
    long value = 17L & PackedInts.maxValue(bitsPerValue);
    w.add(value);
    w.finish();
    final long end = out.getFilePointer();
    out.close();

    IndexInput in = dir.openInput("out", newIOContext(random()));
    Reader reader = PackedInts.getReader(in);
    String msg = "Impl=" + w.getClass().getSimpleName() + ", bitsPerValue=" + bitsPerValue;
    assertEquals(msg, 1, reader.size());
    assertEquals(msg, value, reader.get(0));
    assertEquals(msg, end, in.getFilePointer());
    in.close();

    dir.close();
  }
}