org.apache.iotdb.tsfile.encoding.decoder

Class LongRleDecoder

java.lang.Object

org.apache.iotdb.tsfile.encoding.decoder.Decoder

org.apache.iotdb.tsfile.encoding.decoder.RleDecoder

org.apache.iotdb.tsfile.encoding.decoder.LongRleDecoder

public class LongRleDecoder
extends RleDecoder

Decoder for long value using rle or bit-packing.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.iotdb.tsfile.encoding.decoder.RleDecoder

RleDecoder.Mode

Field Summary

Fields inherited from class org.apache.iotdb.tsfile.encoding.decoder.RleDecoder

bitPackingNum, bitWidth, byteCache, config, currentCount, isLengthAndBitWidthReaded, length, mode

Constructor Summary

Constructors

Constructor and Description
LongRleDecoder()

Method Summary

Modifier and Type	Method and Description
protected void	initPacker()
protected void	readBitPackingBuffer(int bitPackedGroupCount, int lastBitPackedNum) Read bit-packing package and save them in buffer.
long	readLong(ByteBuffer buffer) read a long value from InputStream.
protected void	readNumberInRle() Read rle package and save them in buffer.

Methods inherited from class org.apache.iotdb.tsfile.encoding.decoder.RleDecoder

callReadBitPackingBuffer, getHeader, hasNext, hasNextPackage, readBigDecimal, readBinary, readBoolean, readDouble, readFloat, readInt, readLengthAndBitWidth, readNext, readShort, reset

Methods inherited from class org.apache.iotdb.tsfile.encoding.decoder.Decoder

getDecoderByType, getType, setType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LongRleDecoder

public LongRleDecoder()

Method Detail

readLong

public long readLong(ByteBuffer buffer)

read a long value from InputStream.

Overrides:

readLong in class RleDecoder

Parameters:

buffer - - InputStream

Returns:

value - current valid value

initPacker

protected void initPacker()

Specified by:

initPacker in class RleDecoder

readNumberInRle

protected void readNumberInRle()
                        throws IOException

Description copied from class: RleDecoder

Read rle package and save them in buffer.

Specified by:

readNumberInRle in class RleDecoder

Throws:

IOException - cannot read number

readBitPackingBuffer

protected void readBitPackingBuffer(int bitPackedGroupCount,
                                    int lastBitPackedNum)

Description copied from class: RleDecoder

Read bit-packing package and save them in buffer.

Specified by:

readBitPackingBuffer in class RleDecoder

Parameters:

bitPackedGroupCount - number of group number

lastBitPackedNum - number of useful value in last group