org.apache.iotdb.tsfile.write.page

Class ValuePageWriter

java.lang.Object

org.apache.iotdb.tsfile.write.page.ValuePageWriter

public class ValuePageWriter
extends Object

This writer is used to write value into a page. It consists of a value encoder and respective OutputStream.

Constructor Summary

Constructors

Constructor and Description
ValuePageWriter(Encoder valueEncoder, ICompressor compressor, TSDataType dataType)

Method Summary

Modifier and Type	Method and Description
long	estimateMaxMemSize() calculate max possible memory size it occupies, including time outputStream and value outputStream, because size outputStream is never used until flushing.
long	getPointNumber()
int	getSize()
Statistics<? extends Serializable>	getStatistics()
ByteBuffer	getUncompressedBytes() getUncompressedBytes return data what it has been written in form of size of time list, time list, value list
void	initStatistics(TSDataType dataType)
void	reset(TSDataType dataType) reset this page
void	setValueEncoder(Encoder encoder)
void	write(long[] timestamps, Binary[] values, int batchSize) write time series into encoder
void	write(long[] timestamps, boolean[] values, int batchSize) write time series into encoder
void	write(long[] timestamps, double[] values, int batchSize) write time series into encoder
void	write(long[] timestamps, float[] values, int batchSize) write time series into encoder
void	write(long[] timestamps, int[] values, int batchSize) write time series into encoder
void	write(long[] timestamps, long[] values, int batchSize) write time series into encoder
void	write(long time, Binary value, boolean isNull) write a time value pair into encoder
void	write(long time, boolean value, boolean isNull) write a time value pair into encoder
void	write(long time, double value, boolean isNull) write a time value pair into encoder
void	write(long time, float value, boolean isNull) write a time value pair into encoder
void	write(long time, int value, boolean isNull) write a time value pair into encoder
void	write(long time, long value, boolean isNull) write a time value pair into encoder
void	write(long time, short value, boolean isNull) write a time value pair into encoder
int	writeEmptyPageIntoBuff(PublicBAOS pageBuffer)
int	writePageHeaderAndDataIntoBuff(PublicBAOS pageBuffer, boolean first) write the page header and data into the PageWriter's output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

ValuePageWriter

public ValuePageWriter(Encoder valueEncoder,
                       ICompressor compressor,
                       TSDataType dataType)

Method Detail

write

public void write(long time,
                  boolean value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  short value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  int value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  long value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  float value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  double value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long time,
                  Binary value,
                  boolean isNull)

write a time value pair into encoder

write

public void write(long[] timestamps,
                  boolean[] values,
                  int batchSize)

write time series into encoder

write

public void write(long[] timestamps,
                  int[] values,
                  int batchSize)

write time series into encoder

write

public void write(long[] timestamps,
                  long[] values,
                  int batchSize)

write time series into encoder

write

public void write(long[] timestamps,
                  float[] values,
                  int batchSize)

write time series into encoder

write

public void write(long[] timestamps,
                  double[] values,
                  int batchSize)

write time series into encoder

write

public void write(long[] timestamps,
                  Binary[] values,
                  int batchSize)

write time series into encoder

getUncompressedBytes

public ByteBuffer getUncompressedBytes()
                                throws IOException

getUncompressedBytes return data what it has been written in form of size of time list, time list, value list

Returns:

a new readable ByteBuffer whose position is 0.

Throws:

IOException

writeEmptyPageIntoBuff

public int writeEmptyPageIntoBuff(PublicBAOS pageBuffer)

writePageHeaderAndDataIntoBuff

public int writePageHeaderAndDataIntoBuff(PublicBAOS pageBuffer,
                                          boolean first)
                                   throws IOException

write the page header and data into the PageWriter's output stream.

Throws:

IOException

estimateMaxMemSize

public long estimateMaxMemSize()

calculate max possible memory size it occupies, including time outputStream and value outputStream, because size outputStream is never used until flushing.

Returns:

allocated size in time, value and outputStream

reset

public void reset(TSDataType dataType)

reset this page

setValueEncoder

public void setValueEncoder(Encoder encoder)

initStatistics

public void initStatistics(TSDataType dataType)

getPointNumber

public long getPointNumber()

getStatistics

public Statistics<? extends Serializable> getStatistics()

getSize

public int getSize()