io.prestosql.plugin.hive

Class HivePageSourceFactory.ReaderPageSourceWithProjections

java.lang.Object

io.prestosql.plugin.hive.HivePageSourceFactory.ReaderPageSourceWithProjections

Enclosing interface:

HivePageSourceFactory

public static class HivePageSourceFactory.ReaderPageSourceWithProjections
extends Object

A wrapper class for - delegate reader page source and - projection information for columns to be returned by the delegate Empty indicates that the delegate page source reads the exact same columns provided to it in HivePageSourceFactory.createPageSource(org.apache.hadoop.conf.Configuration, io.prestosql.spi.connector.ConnectorSession, org.apache.hadoop.fs.Path, long, long, long, java.util.Properties, java.util.List<io.prestosql.plugin.hive.HiveColumnHandle>, io.prestosql.spi.predicate.TupleDomain<io.prestosql.plugin.hive.HiveColumnHandle>, org.joda.time.DateTimeZone, java.util.Optional<io.prestosql.plugin.hive.DeleteDeltaLocations>)

Constructor Summary

Constructors

Constructor and Description
ReaderPageSourceWithProjections(ConnectorPageSource connectorPageSource, Optional<ReaderProjections> projectedReaderColumns)

Method Summary

Modifier and Type	Method and Description
ConnectorPageSource	getConnectorPageSource()
Optional<ReaderProjections>	getProjectedReaderColumns()
static HivePageSourceFactory.ReaderPageSourceWithProjections	noProjectionAdaptation(ConnectorPageSource connectorPageSource)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReaderPageSourceWithProjections

public ReaderPageSourceWithProjections(ConnectorPageSource connectorPageSource,
                                       Optional<ReaderProjections> projectedReaderColumns)

Method Detail

getConnectorPageSource

public ConnectorPageSource getConnectorPageSource()

getProjectedReaderColumns

public Optional<ReaderProjections> getProjectedReaderColumns()

noProjectionAdaptation

public static HivePageSourceFactory.ReaderPageSourceWithProjections noProjectionAdaptation(ConnectorPageSource connectorPageSource)