com.facebook.presto.orc

Class StripeReader

java.lang.Object

com.facebook.presto.orc.StripeReader

public class StripeReader
extends Object

Constructor Summary

Constructors

Constructor and Description
StripeReader(OrcDataSource orcDataSource, Optional<OrcDecompressor> decompressor, List<OrcType> types, Set<Integer> includedColumns, int rowsInRowGroup, OrcPredicate predicate, PostScript.HiveWriterVersion hiveWriterVersion, MetadataReader metadataReader)

Method Summary

Modifier and Type	Method and Description
InputStreamSources	createDictionaryStreamSources(Map<StreamId,Stream> streams, Map<StreamId,ValueInputStream<?>> valueStreams, List<ColumnEncoding> columnEncodings)
static RowGroup	createRowGroup(int groupId, int rowOffset, int rowCount, Map<StreamId,ValueInputStream<?>> valueStreams, Map<StreamId,StreamCheckpoint> checkpoints)
Map<StreamId,OrcInputStream>	readDiskRanges(long stripeOffset, Map<StreamId,DiskRange> diskRanges, AbstractAggregatedMemoryContext systemMemoryUsage)
Stripe	readStripe(StripeInformation stripe, AggregatedMemoryContext systemMemoryUsage)
StripeFooter	readStripeFooter(StripeInformation stripe, AbstractAggregatedMemoryContext systemMemoryUsage)

Methods inherited from class java.lang.Object

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

Constructor Detail

StripeReader

public StripeReader(OrcDataSource orcDataSource,
                    Optional<OrcDecompressor> decompressor,
                    List<OrcType> types,
                    Set<Integer> includedColumns,
                    int rowsInRowGroup,
                    OrcPredicate predicate,
                    PostScript.HiveWriterVersion hiveWriterVersion,
                    MetadataReader metadataReader)

Method Detail

readStripe

public Stripe readStripe(StripeInformation stripe,
                         AggregatedMemoryContext systemMemoryUsage)
                  throws IOException

Throws:

IOException

readDiskRanges

public Map<StreamId,OrcInputStream> readDiskRanges(long stripeOffset,
                                                   Map<StreamId,DiskRange> diskRanges,
                                                   AbstractAggregatedMemoryContext systemMemoryUsage)
                                            throws IOException

Throws:

IOException

createDictionaryStreamSources

public InputStreamSources createDictionaryStreamSources(Map<StreamId,Stream> streams,
                                                        Map<StreamId,ValueInputStream<?>> valueStreams,
                                                        List<ColumnEncoding> columnEncodings)

createRowGroup

public static RowGroup createRowGroup(int groupId,
                                      int rowOffset,
                                      int rowCount,
                                      Map<StreamId,ValueInputStream<?>> valueStreams,
                                      Map<StreamId,StreamCheckpoint> checkpoints)

readStripeFooter

public StripeFooter readStripeFooter(StripeInformation stripe,
                                     AbstractAggregatedMemoryContext systemMemoryUsage)
                              throws IOException

Throws:

IOException