com.facebook.presto.orc

Class StripeReader

java.lang.Object

com.facebook.presto.orc.StripeReader

public class StripeReader
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StripeReader.StripeId
static class	StripeReader.StripeStreamId

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, Optional<OrcWriteValidation> writeValidation, StripeMetadataSource stripeMetadataSource, HiveFileContext hiveFileContext)

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, long minAverageRowBytes, Map<StreamId,ValueInputStream<?>> valueStreams, Map<StreamId,StreamCheckpoint> checkpoints)
Stripe	readStripe(StripeInformation stripe, AggregatedMemoryContext systemMemoryUsage)
StripeFooter	readStripeFooter(StripeReader.StripeId stripeId, StripeInformation stripe, AggregatedMemoryContext 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,
                    Optional<OrcWriteValidation> writeValidation,
                    StripeMetadataSource stripeMetadataSource,
                    HiveFileContext hiveFileContext)

Method Detail

readStripe

public Stripe readStripe(StripeInformation stripe,
                         AggregatedMemoryContext 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,
                                      long minAverageRowBytes,
                                      Map<StreamId,ValueInputStream<?>> valueStreams,
                                      Map<StreamId,StreamCheckpoint> checkpoints)

readStripeFooter

public StripeFooter readStripeFooter(StripeReader.StripeId stripeId,
                                     StripeInformation stripe,
                                     AggregatedMemoryContext systemMemoryUsage)
                              throws IOException

Throws:

IOException