Package org.apache.iotdb.tsfile.encoding.encoder

Class GorillaEncoderV2

java.lang.Object

org.apache.iotdb.tsfile.encoding.encoder.Encoder

org.apache.iotdb.tsfile.encoding.encoder.GorillaEncoderV2

Direct Known Subclasses:

IntChimpEncoder, IntGorillaEncoder, LongChimpEncoder, LongGorillaEncoder

public abstract class GorillaEncoderV2
extends Encoder

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	Description
protected int	bitsLeft
protected boolean	firstValueWasWritten
protected int	storedLeadingZeros
protected int	storedTrailingZeros

Fields inherited from class org.apache.iotdb.tsfile.encoding.encoder.Encoder

MAX_POINT_NUMBER, MAX_STRING_LENGTH

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GorillaEncoderV2()

Method Summary

Modifier and Type	Method	Description
protected void	flipByte(java.io.ByteArrayOutputStream out)
long	getMaxByteSize()	The maximal possible memory size occupied by current Encoder.
protected void	reset()
protected void	skipBit(java.io.ByteArrayOutputStream out)	Stores a 0 and increases the count of bits by 1.
protected void	writeBit(java.io.ByteArrayOutputStream out)	Stores a 1 and increases the count of bits by 1.
protected void	writeBits(long value, int bits, java.io.ByteArrayOutputStream out)	Writes the given long value using the defined amount of least significant bits.

Methods inherited from class org.apache.iotdb.tsfile.encoding.encoder.Encoder

encode, encode, encode, encode, encode, encode, encode, encode, flush, getOneItemMaxSize, getType, setType

Methods inherited from class java.lang.Object

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

Field Detail

firstValueWasWritten

protected boolean firstValueWasWritten

storedLeadingZeros

protected int storedLeadingZeros

storedTrailingZeros

protected int storedTrailingZeros

bitsLeft

protected int bitsLeft

Constructor Detail

GorillaEncoderV2

protected GorillaEncoderV2()

Method Detail

getMaxByteSize

public final long getMaxByteSize()

Description copied from class: Encoder

The maximal possible memory size occupied by current Encoder. This statistic value doesn't involve OutputStream.

Overrides:

getMaxByteSize in class Encoder

Returns:

the maximal size of possible memory occupied by current encoder

reset

protected void reset()

skipBit

protected void skipBit(java.io.ByteArrayOutputStream out)

Stores a 0 and increases the count of bits by 1.

writeBit

protected void writeBit(java.io.ByteArrayOutputStream out)

Stores a 1 and increases the count of bits by 1.

writeBits

protected void writeBits(long value,
                         int bits,
                         java.io.ByteArrayOutputStream out)

Writes the given long value using the defined amount of least significant bits.

Parameters:

value - The long value to be written

bits - How many bits are stored to the stream

flipByte

protected void flipByte(java.io.ByteArrayOutputStream out)