Class MapColumnReader

java.lang.Object

io.trino.orc.reader.MapColumnReader

All Implemented Interfaces:

ColumnReader

public class MapColumnReader
extends Object
implements ColumnReader

Constructor Summary

Constructors

Constructor	Description
MapColumnReader(Type type, OrcColumn column, AggregatedMemoryContext memoryContext, OrcBlockFactory blockFactory, OrcReader.FieldMapperFactory fieldMapperFactory)

Method Summary

Modifier and Type	Method	Description
void	close()
long	getRetainedSizeInBytes()
void	prepareNextRead(int batchSize)
Block	readBlock()
void	startRowGroup(InputStreamSources dataStreamSources)
void	startStripe(ZoneId fileTimeZone, InputStreamSources dictionaryStreamSources, ColumnMetadata<ColumnEncoding> encoding)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

MapColumnReader

public MapColumnReader(Type type,
 OrcColumn column,
 AggregatedMemoryContext memoryContext,
 OrcBlockFactory blockFactory,
 OrcReader.FieldMapperFactory fieldMapperFactory)
                throws OrcCorruptionException

Throws:

OrcCorruptionException

Method Details

prepareNextRead

public void prepareNextRead(int batchSize)

Specified by:

prepareNextRead in interface ColumnReader

readBlock

public Block readBlock()
                throws IOException

Specified by:

readBlock in interface ColumnReader

Throws:

IOException

startStripe

public void startStripe(ZoneId fileTimeZone,
 InputStreamSources dictionaryStreamSources,
 ColumnMetadata<ColumnEncoding> encoding)
                 throws IOException

Specified by:

startStripe in interface ColumnReader

Throws:

IOException

startRowGroup

public void startRowGroup(InputStreamSources dataStreamSources)
                   throws IOException

Specified by:

startRowGroup in interface ColumnReader

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

close

public void close()

Specified by:

close in interface ColumnReader

getRetainedSizeInBytes

public long getRetainedSizeInBytes()

Specified by:

getRetainedSizeInBytes in interface ColumnReader