Java Code Examples for org.apache.lucene.store.DataInput#readLong()

public static FuzzySet deserialize(DataInput in) throws IOException
{
  int version=in.readInt();
  if (version == VERSION_SPI) {
    in.readString();
  }
  final HashFunction hashFunction = hashFunctionForVersion(version);
  int bloomSize=in.readInt();
  int numLongs=in.readInt();
  long[]longs=new long[numLongs];
  for (int i = 0; i < numLongs; i++) {
    longs[i]=in.readLong();
  }
  FixedBitSet bits = new FixedBitSet(longs,bloomSize+1);
  return new FuzzySet(bits,bloomSize,hashFunction);
}
 

/**
 * Creates an array with content retrieved from the given DataInput.
 * @param in       a DataInput, positioned at the start of Packed64-content.
 * @param valueCount  the number of elements.
 * @param bitsPerValue the number of bits available for any given value.
 * @throws java.io.IOException if the values for the backing array could not
 *                             be retrieved.
 */
public Packed64(int packedIntsVersion, DataInput in, int valueCount, int bitsPerValue)
                                                          throws IOException {
  super(valueCount, bitsPerValue);
  final PackedInts.Format format = PackedInts.Format.PACKED;
  final long byteCount = format.byteCount(packedIntsVersion, valueCount, bitsPerValue); // to know how much to read
  final int longCount = format.longCount(PackedInts.VERSION_CURRENT, valueCount, bitsPerValue); // to size the array
  blocks = new long[longCount];
  // read as many longs as we can
  for (int i = 0; i < byteCount / 8; ++i) {
    blocks[i] = in.readLong();
  }
  final int remaining = (int) (byteCount % 8);
  if (remaining != 0) {
    // read the last bytes
    long lastLong = 0;
    for (int i = 0; i < remaining; ++i) {
      lastLong |= (in.readByte() & 0xFFL) << (56 - i * 8);
    }
    blocks[blocks.length - 1] = lastLong;
  }
  maskRight = ~0L << (BLOCK_SIZE-bitsPerValue) >>> (BLOCK_SIZE-bitsPerValue);
  bpvMinusBlockSize = bitsPerValue - BLOCK_SIZE;
}
 

public static BloomFilter deserialize(DataInput in) throws IOException {
    int version = in.readInt(); // we do nothing with this now..., defaults to 0
    int numLongs = in.readInt();
    long[] data = new long[numLongs];
    for (int i = 0; i < numLongs; i++) {
        data[i] = in.readLong();
    }
    int numberOfHashFunctions = in.readInt();
    int hashType = in.readInt();
    return new BloomFilter(new BitArray(data), numberOfHashFunctions, Hashing.fromType(hashType));
}
 

public static Packed64SingleBlock create(DataInput in,
    int valueCount, int bitsPerValue) throws IOException {
  Packed64SingleBlock reader = create(valueCount, bitsPerValue);
  for (int i = 0; i < reader.blocks.length; ++i) {
    reader.blocks[i] = in.readLong();
  }
  return reader;
}
 

static Checkpoint readCheckpointV6_4_0(final DataInput in) throws IOException {
    final long offset = in.readLong();
    final int numOps = in.readInt();
    final long generation = in.readLong();
    final long minSeqNo = in.readLong();
    final long maxSeqNo = in.readLong();
    final long globalCheckpoint = in.readLong();
    final long minTranslogGeneration = in.readLong();
    final long trimmedAboveSeqNo = in.readLong();
    return new Checkpoint(offset, numOps, generation, minSeqNo, maxSeqNo, globalCheckpoint, minTranslogGeneration, trimmedAboveSeqNo);
}
 

static Checkpoint readCheckpointV6_0_0(final DataInput in) throws IOException {
    final long offset = in.readLong();
    final int numOps = in.readInt();
    final long generation = in.readLong();
    final long minSeqNo = in.readLong();
    final long maxSeqNo = in.readLong();
    final long globalCheckpoint = in.readLong();
    final long minTranslogGeneration = in.readLong();
    final long trimmedAboveSeqNo = SequenceNumbers.UNASSIGNED_SEQ_NO;
    return new Checkpoint(offset, numOps, generation, minSeqNo, maxSeqNo, globalCheckpoint, minTranslogGeneration, trimmedAboveSeqNo);
}
 

static Checkpoint readCheckpointV5_0_0(final DataInput in) throws IOException {
    final long offset = in.readLong();
    final int numOps = in.readInt();
    final long generation = in.readLong();
    final long minSeqNo = SequenceNumbers.NO_OPS_PERFORMED;
    final long maxSeqNo = SequenceNumbers.NO_OPS_PERFORMED;
    final long globalCheckpoint = SequenceNumbers.UNASSIGNED_SEQ_NO;
    final long minTranslogGeneration = -1;
    final long trimmedAboveSeqNo = SequenceNumbers.UNASSIGNED_SEQ_NO;
    return new Checkpoint(offset, numOps, generation, minSeqNo, maxSeqNo, globalCheckpoint, minTranslogGeneration, trimmedAboveSeqNo);
}
 

Checkpoint(DataInput in) throws IOException {
    offset = in.readLong();
    numOps = in.readInt();
    generation = in.readLong();
}