Package org.apache.iotdb.tsfile.write.page

Class TimePageWriter

java.lang.Object

org.apache.iotdb.tsfile.write.page.TimePageWriter

public class TimePageWriter
extends java.lang.Object

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

Constructor Summary

Constructors

Constructor	Description
TimePageWriter(Encoder timeEncoder, ICompressor compressor)

Method Summary

Modifier and Type	Method	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()
TimeStatistics	getStatistics()
java.nio.ByteBuffer	getUncompressedBytes()	getUncompressedBytes return data what it has been written in form of size of time list, time list, value list
void	initStatistics()
void	reset()	reset this page
void	setTimeEncoder(Encoder encoder)
void	write(long time)	write a time into encoder
void	write(long[] timestamps, int batchSize, int arrayOffset)	write time series into encoder
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

TimePageWriter

public TimePageWriter(Encoder timeEncoder,
                      ICompressor compressor)

Method Detail

write

public void write(long time)

write a time into encoder

write

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

write time series into encoder

getUncompressedBytes

public java.nio.ByteBuffer getUncompressedBytes()
                                         throws java.io.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:

java.io.IOException

writePageHeaderAndDataIntoBuff

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

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

Throws:

java.io.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()

reset this page

setTimeEncoder

public void setTimeEncoder(Encoder encoder)

initStatistics

public void initStatistics()

getPointNumber

public long getPointNumber()

getStatistics

public TimeStatistics getStatistics()