Package io.trino.orc.writer

Class SliceDictionaryColumnWriter

java.lang.Object

io.trino.orc.writer.SliceDictionaryColumnWriter

All Implemented Interfaces:

DictionaryCompressionOptimizer.DictionaryColumn, ColumnWriter

public class SliceDictionaryColumnWriter
extends Object
implements ColumnWriter, DictionaryCompressionOptimizer.DictionaryColumn

Constructor Summary

Constructors

Constructor	Description
SliceDictionaryColumnWriter(OrcColumnId columnId, Type type, CompressionKind compression, int bufferSize, Supplier<SliceColumnStatisticsBuilder> statisticsBuilderSupplier)

Method Summary

Modifier and Type	Method	Description
void	beginRowGroup()
void	close()
Map<OrcColumnId,ColumnStatistics>	finishRowGroup()
List<StreamDataOutput>	getBloomFilters(CompressedMetadataWriter metadataWriter)
long	getBufferedBytes()	This method returns the size of the flushed data plus any unflushed data.
Map<OrcColumnId,ColumnEncoding>	getColumnEncodings()
Map<OrcColumnId,ColumnStatistics>	getColumnStripeStatistics()
List<StreamDataOutput>	getDataStreams()	Get the data streams to be written.
int	getDictionaryBytes()
int	getDictionaryEntries()
int	getIndexBytes()
List<StreamDataOutput>	getIndexStreams(CompressedMetadataWriter metadataWriter)	Write index streams to the output and return the streams in the order in which they were written.
long	getNonNullValueCount()
long	getRawBytes()
long	getRetainedBytes()
long	getValueCount()
void	reset()
OptionalInt	tryConvertToDirect(int maxDirectBytes)
void	writeBlock(Block block)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.orc.writer.ColumnWriter

getNestedColumnWriters

Constructor Details

SliceDictionaryColumnWriter

public SliceDictionaryColumnWriter(OrcColumnId columnId,
 Type type,
 CompressionKind compression,
 int bufferSize,
 Supplier<SliceColumnStatisticsBuilder> statisticsBuilderSupplier)

Method Details

getRawBytes

public long getRawBytes()

Specified by:

getRawBytes in interface DictionaryCompressionOptimizer.DictionaryColumn

getDictionaryBytes

public int getDictionaryBytes()

Specified by:

getDictionaryBytes in interface DictionaryCompressionOptimizer.DictionaryColumn

getIndexBytes

public int getIndexBytes()

Specified by:

getIndexBytes in interface DictionaryCompressionOptimizer.DictionaryColumn

getValueCount

public long getValueCount()

Specified by:

getValueCount in interface DictionaryCompressionOptimizer.DictionaryColumn

getNonNullValueCount

public long getNonNullValueCount()

Specified by:

getNonNullValueCount in interface DictionaryCompressionOptimizer.DictionaryColumn

getDictionaryEntries

public int getDictionaryEntries()

Specified by:

getDictionaryEntries in interface DictionaryCompressionOptimizer.DictionaryColumn

tryConvertToDirect

public OptionalInt tryConvertToDirect(int maxDirectBytes)

Specified by:

tryConvertToDirect in interface DictionaryCompressionOptimizer.DictionaryColumn

getColumnEncodings

public Map<OrcColumnId,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<OrcColumnId,ColumnStatistics> finishRowGroup()

Specified by:

finishRowGroup in interface ColumnWriter

close

public void close()

Specified by:

close in interface ColumnWriter

getColumnStripeStatistics

public Map<OrcColumnId,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

getBloomFilters

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

Specified by:

getBloomFilters 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

Specified by:

getBufferedBytes in interface DictionaryCompressionOptimizer.DictionaryColumn

getRetainedBytes

public long getRetainedBytes()

Specified by:

getRetainedBytes in interface ColumnWriter

reset

public void reset()

Specified by:

reset in interface ColumnWriter