Package io.trino.orc.reader

Interface ColumnReader

All Known Implementing Classes:

BooleanColumnReader, ByteColumnReader, DecimalColumnReader, DoubleColumnReader, FloatColumnReader, ListColumnReader, LongColumnReader, MapColumnReader, SliceColumnReader, SliceDictionaryColumnReader, SliceDirectColumnReader, StructColumnReader, TimeColumnReader, TimestampColumnReader, UnionColumnReader, UuidColumnReader

public interface ColumnReader

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)

Method Details

readBlock

Block readBlock()
         throws IOException

Throws:

IOException

prepareNextRead

void prepareNextRead(int batchSize)

startStripe

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

Throws:

IOException

startRowGroup

void startRowGroup(InputStreamSources dataStreamSources)
            throws IOException

Throws:

IOException

close

void close()

getRetainedSizeInBytes

long getRetainedSizeInBytes()