org.apache.iotdb.tsfile.encoding.encoder

Class DeltaBinaryEncoder.LongDeltaEncoder

java.lang.Object

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

org.apache.iotdb.tsfile.encoding.encoder.DeltaBinaryEncoder

org.apache.iotdb.tsfile.encoding.encoder.DeltaBinaryEncoder.LongDeltaEncoder

Enclosing class:

DeltaBinaryEncoder

public static class DeltaBinaryEncoder.LongDeltaEncoder
extends DeltaBinaryEncoder

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.iotdb.tsfile.encoding.encoder.DeltaBinaryEncoder

DeltaBinaryEncoder.IntDeltaEncoder, DeltaBinaryEncoder.LongDeltaEncoder

Field Summary

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

BLOCK_DEFAULT_SIZE, blockSize, encodingBlockBuffer, out, writeIndex, writeWidth

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

MAX_POINT_NUMBER, MAX_STRING_LENGTH

Constructor Summary

Constructors

Constructor and Description
LongDeltaEncoder()
LongDeltaEncoder(int size) constructor of LongDeltaEncoder which is a sub-class of DeltaBinaryEncoder.

Method Summary

Modifier and Type	Method and Description
protected void	calcTwoDiff(int i)
protected int	calculateBitWidthsForDeltaBlockBuffer()
void	encode(long value, ByteArrayOutputStream out)
void	encodeValue(long value, ByteArrayOutputStream out) input a integer or long value.
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 void	reset()
protected void	writeHeader()
protected void	writeValueToBytes(int i)

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

flush

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

Constructor Detail

LongDeltaEncoder

public LongDeltaEncoder()

LongDeltaEncoder

public LongDeltaEncoder(int size)

constructor of LongDeltaEncoder which is a sub-class of DeltaBinaryEncoder.

Parameters:

size - - the number how many numbers to be packed into a block.

Method Detail

reset

protected void reset()

Specified by:

reset in class DeltaBinaryEncoder

writeValueToBytes

protected void writeValueToBytes(int i)

Specified by:

writeValueToBytes in class DeltaBinaryEncoder

calcTwoDiff

protected void calcTwoDiff(int i)

Specified by:

calcTwoDiff in class DeltaBinaryEncoder

writeHeader

protected void writeHeader()
                    throws IOException

Specified by:

writeHeader in class DeltaBinaryEncoder

Throws:

IOException

encode

public void encode(long value,
                   ByteArrayOutputStream out)

Overrides:

encode in class Encoder

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

encodeValue

public void encodeValue(long value,
                        ByteArrayOutputStream out)

input a integer or long value.

Parameters:

value - value to encode

out - - the ByteArrayOutputStream which data encode into

calculateBitWidthsForDeltaBlockBuffer

protected int calculateBitWidthsForDeltaBlockBuffer()

Specified by:

calculateBitWidthsForDeltaBlockBuffer in class DeltaBinaryEncoder