org.apache.iotdb.tsfile.encoding.encoder

Class DeltaBinaryEncoder.IntDeltaEncoder

java.lang.Object

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

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

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

Enclosing class:

DeltaBinaryEncoder

public static class DeltaBinaryEncoder.IntDeltaEncoder
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
IntDeltaEncoder()
IntDeltaEncoder(int size) constructor of IntDeltaEncoder 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(int value, ByteArrayOutputStream out)
void	encodeValue(int value, ByteArrayOutputStream out) input a integer.
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

IntDeltaEncoder

public IntDeltaEncoder()

IntDeltaEncoder

public IntDeltaEncoder(int size)

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

Parameters:

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

Method Detail

calculateBitWidthsForDeltaBlockBuffer

protected int calculateBitWidthsForDeltaBlockBuffer()

Specified by:

calculateBitWidthsForDeltaBlockBuffer in class DeltaBinaryEncoder

encodeValue

public void encodeValue(int value,
                        ByteArrayOutputStream out)

input a integer.

Parameters:

value - value to encode

out - the ByteArrayOutputStream which data encode into

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(int 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