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

Class FloatSprintzEncoder

java.lang.Object

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

org.apache.iotdb.tsfile.encoding.encoder.SprintzEncoder

org.apache.iotdb.tsfile.encoding.encoder.FloatSprintzEncoder

public class FloatSprintzEncoder
extends SprintzEncoder

Field Summary

Fields

Modifier and Type	Field	Description
protected Vector<Float>	values	we save all value in a list and calculate its bitwidth.

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

bitWidth, Block_size, byteCache, config, groupMax, groupNum, isFirstCached, logger, predictMethod

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

MAX_POINT_NUMBER, MAX_STRING_LENGTH

Constructor Summary

Constructors

Constructor	Description
FloatSprintzEncoder()

Method Summary

Modifier and Type	Method	Description
protected void	bitPack()
protected int	delta(Float value, Float preValue)
void	encode(float value, ByteArrayOutputStream out)
protected int	fire(Float value, Float preValue)
void	flush(ByteArrayOutputStream out)	Write all values buffered in memory cache to OutputStream.
long	getMaxByteSize()	The maximal possible memory size occupied by current Encoder.
int	getOneItemMaxSize()	When encoder accepts a new incoming data point, the maximal possible size in byte it takes to store in memory.
protected int	predict(Float value, Float preVlaue)
protected void	reset()

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

encode, encode, encode, encode, encode, encode, encode, getType, setType

Methods inherited from class java.lang.Object

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

Field Detail

values

protected Vector<Float> values

we save all value in a list and calculate its bitwidth.

Constructor Detail

FloatSprintzEncoder

public FloatSprintzEncoder()

Method Detail

reset

protected void reset()

Overrides:

reset in class SprintzEncoder

getOneItemMaxSize

public int getOneItemMaxSize()

Description copied from class: Encoder

When encoder accepts a new incoming data point, the maximal possible size in byte it takes to store in memory.

Overrides:

getOneItemMaxSize in class Encoder

Returns:

the maximal possible size of one data item encoded by this encoder

getMaxByteSize

public 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

predict

protected int predict(Float value,
                      Float preVlaue)
               throws TsFileEncodingException

Throws:

TsFileEncodingException

bitPack

protected void bitPack()
                throws IOException

Specified by:

bitPack in class SprintzEncoder

Throws:

IOException

delta

protected int delta(Float value,
                    Float preValue)

fire

protected int fire(Float value,
                   Float preValue)

flush

public void flush(ByteArrayOutputStream out)
           throws IOException

Description copied from class: Encoder

Write all values buffered in memory cache to OutputStream.

Specified by:

flush in class Encoder

Parameters:

out - - ByteArrayOutputStream

Throws:

IOException - cannot flush to OutputStream

encode

public void encode(float value,
                   ByteArrayOutputStream out)

Overrides:

encode in class Encoder