com.facebook.presto.orc.writer

Class StructColumnWriter

java.lang.Object

com.facebook.presto.orc.writer.StructColumnWriter

All Implemented Interfaces:

ColumnWriter

public class StructColumnWriter
extends Object
implements ColumnWriter

Constructor Summary

Constructors

Constructor and Description
StructColumnWriter(int column, CompressionKind compression, int bufferSize, List<ColumnWriter> structFields)

Method Summary

Modifier and Type	Method and Description
void	beginRowGroup()
void	close()
Map<Integer,ColumnStatistics>	finishRowGroup()
long	getBufferedBytes() This method returns the size of the flushed data plus any unflushed data.
Map<Integer,ColumnEncoding>	getColumnEncodings()
Map<Integer,ColumnStatistics>	getColumnStripeStatistics()
List<StreamDataOutput>	getDataStreams() Get the data streams to be written.
List<StreamDataOutput>	getIndexStreams(CompressedMetadataWriter metadataWriter) Write index streams to the output and return the streams in the order in which they were written.
List<ColumnWriter>	getNestedColumnWriters()
long	getRetainedBytes()
void	reset()
void	writeBlock(Block block)

Methods inherited from class java.lang.Object

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

Constructor Detail

StructColumnWriter

public StructColumnWriter(int column,
                          CompressionKind compression,
                          int bufferSize,
                          List<ColumnWriter> structFields)

Method Detail

getNestedColumnWriters

public List<ColumnWriter> getNestedColumnWriters()

Specified by:

getNestedColumnWriters in interface ColumnWriter

getColumnEncodings

public Map<Integer,ColumnEncoding> getColumnEncodings()

Specified by:

getColumnEncodings in interface ColumnWriter

beginRowGroup

public void beginRowGroup()

Specified by:

beginRowGroup in interface ColumnWriter

writeBlock

public void writeBlock(Block block)

Specified by:

writeBlock in interface ColumnWriter

finishRowGroup

public Map<Integer,ColumnStatistics> finishRowGroup()

Specified by:

finishRowGroup in interface ColumnWriter

close

public void close()

Specified by:

close in interface ColumnWriter

getColumnStripeStatistics

public Map<Integer,ColumnStatistics> getColumnStripeStatistics()

Specified by:

getColumnStripeStatistics in interface ColumnWriter

getIndexStreams

public List<StreamDataOutput> getIndexStreams(CompressedMetadataWriter metadataWriter)
                                       throws IOException

Description copied from interface: ColumnWriter

Write index streams to the output and return the streams in the order in which they were written. The ordering is critical because the stream only contain a length with no offset.

Specified by:

getIndexStreams in interface ColumnWriter

Throws:

IOException

getDataStreams

public List<StreamDataOutput> getDataStreams()

Description copied from interface: ColumnWriter

Get the data streams to be written.

Specified by:

getDataStreams in interface ColumnWriter

getBufferedBytes

public long getBufferedBytes()

Description copied from interface: ColumnWriter

This method returns the size of the flushed data plus any unflushed data. If the output is compressed, flush data size is the size after compression.

Specified by:

getBufferedBytes in interface ColumnWriter

getRetainedBytes

public long getRetainedBytes()

Specified by:

getRetainedBytes in interface ColumnWriter

reset

public void reset()

Specified by:

reset in interface ColumnWriter