Package org.apache.iotdb.tsfile.write.chunk

Class ChunkWriterImpl

java.lang.Object

org.apache.iotdb.tsfile.write.chunk.ChunkWriterImpl

All Implemented Interfaces:

IChunkWriter

public class ChunkWriterImpl
extends java.lang.Object
implements IChunkWriter

Constructor Summary

Constructors

Constructor	Description
ChunkWriterImpl(IMeasurementSchema schema)
ChunkWriterImpl(IMeasurementSchema schema, boolean isMerging)

Method Summary

Modifier and Type	Method	Description
boolean	checkIsChunkSizeOverThreshold(long size, long pointNum, boolean returnTrueIfChunkEmpty)	used for compaction to check whether the chunk is over threshold or not.
boolean	checkIsUnsealedPageOverThreshold(long size, long pointNum, boolean returnTrueIfPageEmpty)	used for compaction to check whether the unsealed page is over threshold or not.
void	clearPageWriter()	set the current pageWriter to null, friendly for gc
long	estimateMaxSeriesMemSize()	estimate memory usage of this series.
TSDataType	getDataType()
PageWriter	getPageWriter()	Only used for tests.
long	getSerializedChunkSize()	return the serialized size of the chunk header + all pages (not including the un-sealed page).
boolean	isMerging()
void	sealCurrentPage()	seal the current page which may has not enough data points in force.
void	setIsMerging(boolean isMerging)
void	setLastPoint(boolean isLastPoint)
void	write(long[] timestamps, boolean[] values, int batchSize)
void	write(long[] timestamps, double[] values, int batchSize)
void	write(long[] timestamps, float[] values, int batchSize)
void	write(long[] timestamps, int[] values, int batchSize)
void	write(long[] timestamps, long[] values, int batchSize)
void	write(long[] timestamps, Binary[] values, int batchSize)
void	write(long time, boolean value)
void	write(long time, double value)
void	write(long time, float value)
void	write(long time, int value)
void	write(long time, long value)
void	write(long time, Binary value)
void	writePageHeaderAndDataIntoBuff(java.nio.ByteBuffer data, PageHeader header)	write the page header and data into the PageWriter's output stream.
void	writeToFileWriter(TsFileIOWriter tsfileWriter)	flush data to TsFileIOWriter.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChunkWriterImpl

public ChunkWriterImpl(IMeasurementSchema schema)

Parameters:

schema - schema of this measurement

ChunkWriterImpl

public ChunkWriterImpl(IMeasurementSchema schema,
                       boolean isMerging)

Method Detail

write

public void write(long time,
                  long value)

write

public void write(long time,
                  int value)

write

public void write(long time,
                  boolean value)

write

public void write(long time,
                  float value)

write

public void write(long time,
                  double value)

write

public void write(long time,
                  Binary value)

write

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

write

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

write

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

write

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

write

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

write

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

writeToFileWriter

public void writeToFileWriter(TsFileIOWriter tsfileWriter)
                       throws java.io.IOException

Description copied from interface: IChunkWriter

flush data to TsFileIOWriter.

Specified by:

writeToFileWriter in interface IChunkWriter

Throws:

java.io.IOException

estimateMaxSeriesMemSize

public long estimateMaxSeriesMemSize()

Description copied from interface: IChunkWriter

estimate memory usage of this series.

Specified by:

estimateMaxSeriesMemSize in interface IChunkWriter

getSerializedChunkSize

public long getSerializedChunkSize()

Description copied from interface: IChunkWriter

return the serialized size of the chunk header + all pages (not including the un-sealed page). Notice, call this method before calling writeToFileWriter(), otherwise the page buffer in memory will be cleared.
If there is no data points in the chunk, return 0 (i.e., in this case, the size of header is not calculated, because nothing will be serialized latter)

Specified by:

getSerializedChunkSize in interface IChunkWriter

sealCurrentPage

public void sealCurrentPage()

Description copied from interface: IChunkWriter

seal the current page which may has not enough data points in force.

Specified by:

sealCurrentPage in interface IChunkWriter

clearPageWriter

public void clearPageWriter()

Description copied from interface: IChunkWriter

set the current pageWriter to null, friendly for gc

Specified by:

clearPageWriter in interface IChunkWriter

checkIsUnsealedPageOverThreshold

public boolean checkIsUnsealedPageOverThreshold(long size,
                                                long pointNum,
                                                boolean returnTrueIfPageEmpty)

Description copied from interface: IChunkWriter

used for compaction to check whether the unsealed page is over threshold or not. Return true if there is no unsealed page.

Specified by:

checkIsUnsealedPageOverThreshold in interface IChunkWriter

checkIsChunkSizeOverThreshold

public boolean checkIsChunkSizeOverThreshold(long size,
                                             long pointNum,
                                             boolean returnTrueIfChunkEmpty)

Description copied from interface: IChunkWriter

used for compaction to check whether the chunk is over threshold or not. Return true if there is no unsealed chunk.

Specified by:

checkIsChunkSizeOverThreshold in interface IChunkWriter

getDataType

public TSDataType getDataType()

writePageHeaderAndDataIntoBuff

public void writePageHeaderAndDataIntoBuff(java.nio.ByteBuffer data,
                                           PageHeader header)
                                    throws PageException

write the page header and data into the PageWriter's output stream. @NOTE: for upgrading 0.11/v2 to 0.12/v3 TsFile

Throws:

PageException

setIsMerging

public void setIsMerging(boolean isMerging)

isMerging

public boolean isMerging()

setLastPoint

public void setLastPoint(boolean isLastPoint)

getPageWriter

public PageWriter getPageWriter()

Only used for tests.