org.apache.iotdb.tsfile.encoding.decoder

Class GorillaDecoderV2

java.lang.Object

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

org.apache.iotdb.tsfile.encoding.decoder.GorillaDecoderV2

Direct Known Subclasses:

IntGorillaDecoder, LongGorillaDecoder

public abstract class GorillaDecoderV2
extends Decoder

This class includes code modified from Michael Burman's gorilla-tsc project.

Copyright: 2016-2018 Michael Burman and/or other contributors

Project page: https://github.com/burmanm/gorilla-tsc

License: http://www.apache.org/licenses/LICENSE-2.0

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	firstValueWasRead
protected boolean	hasNext
protected int	storedLeadingZeros
protected int	storedTrailingZeros

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GorillaDecoderV2()

Method Summary

Modifier and Type	Method and Description
protected void	flipByte(ByteBuffer in)
boolean	hasNext(ByteBuffer in)
protected boolean	readBit(ByteBuffer in) Reads the next bit and returns a boolean representing it.
protected long	readLong(int bits, ByteBuffer in) Reads a long from the next X bits that represent the least significant bits in the long value.
protected byte	readNextClearBit(int maxBits, ByteBuffer in)
void	reset()

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

getDecoderByType, getType, readBigDecimal, readBinary, readBoolean, readDouble, readFloat, readInt, readLong, readShort, setType

Methods inherited from class java.lang.Object

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

Field Detail

firstValueWasRead

protected boolean firstValueWasRead

storedLeadingZeros

protected int storedLeadingZeros

storedTrailingZeros

protected int storedTrailingZeros

hasNext

protected boolean hasNext

Constructor Detail

GorillaDecoderV2

protected GorillaDecoderV2()

Method Detail

hasNext

public final boolean hasNext(ByteBuffer in)

Specified by:

hasNext in class Decoder

reset

public void reset()

Specified by:

reset in class Decoder

readBit

protected boolean readBit(ByteBuffer in)

Reads the next bit and returns a boolean representing it.

Returns:

true if the next bit is 1, otherwise 0.

readLong

protected long readLong(int bits,
                        ByteBuffer in)

Reads a long from the next X bits that represent the least significant bits in the long value.

Parameters:

bits - How many next bits are read from the stream

Returns:

long value that was read from the stream

readNextClearBit

protected byte readNextClearBit(int maxBits,
                                ByteBuffer in)

flipByte

protected void flipByte(ByteBuffer in)