com.facebook.hive.orc.lazy

Class LazyStructTreeReader

java.lang.Object

com.facebook.hive.orc.lazy.LazyTreeReader

com.facebook.hive.orc.lazy.LazyStructTreeReader

public class LazyStructTreeReader
extends LazyTreeReader

Field Summary

Fields inherited from class com.facebook.hive.orc.lazy.LazyTreeReader

columnId, previousPresentRow, previousRow, previousRowIndexEntry, rowBaseInStripe, rowIndexStride, valuePresent

Constructor Summary

Constructors

Constructor and Description
LazyStructTreeReader(int columnId, long rowIndexStride, LazyTreeReader[] fields, List<String> fieldNames)

Method Summary

Modifier and Type	Method and Description
void	close()
Object	next(Object previous) Should only be called from within the tree reader once it's been checked that the next object isn't null
protected void	seek(int index)
protected void	seek(int rowIndexEntry, boolean backwards) Adjust all streams to the beginning of the row index entry specified, backwards means that a previous value is being read and forces the index entry to be restarted, otherwise, has no effect if we're already in the current index entry
void	skipRows(long numNonNullValues) Should only be called from within the tree reader once numNonNulls has been set correctly
void	startStripe(Map<StreamName,InStream> streams, List<OrcProto.ColumnEncoding> encodings, OrcProto.RowIndex[] indexes, long rowBaseInStripe)

Methods inherited from class com.facebook.hive.orc.lazy.LazyTreeReader

computeRowIndexEntry, countNonNulls, createWritableFromLatest, get, getBoolean, getDouble, getFloat, getInComplexType, getInt, getLong, getShort, loadIndeces, nextBoolean, nextDouble, nextFloat, nextInt, nextIsNull, nextIsNullInComplexType, nextLong, nextShort, seekToPresentRow, seekToRow, skipRowsInComplexType

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyStructTreeReader

public LazyStructTreeReader(int columnId,
                            long rowIndexStride,
                            LazyTreeReader[] fields,
                            List<String> fieldNames)
                     throws IOException

Throws:

IOException

Method Detail

skipRows

public void skipRows(long numNonNullValues)
              throws IOException

Description copied from class: LazyTreeReader

Should only be called from within the tree reader once numNonNulls has been set correctly

Specified by:

skipRows in class LazyTreeReader

Throws:

IOException

next

public Object next(Object previous)
            throws IOException

Description copied from class: LazyTreeReader

Should only be called from within the tree reader once it's been checked that the next object isn't null

Specified by:

next in class LazyTreeReader

Returns:

Throws:

IOException

startStripe

public void startStripe(Map<StreamName,InStream> streams,
                        List<OrcProto.ColumnEncoding> encodings,
                        OrcProto.RowIndex[] indexes,
                        long rowBaseInStripe)
                 throws IOException

Overrides:

startStripe in class LazyTreeReader

Throws:

IOException

seek

protected void seek(int rowIndexEntry,
                    boolean backwards)
             throws IOException

Description copied from class: LazyTreeReader

Adjust all streams to the beginning of the row index entry specified, backwards means that a previous value is being read and forces the index entry to be restarted, otherwise, has no effect if we're already in the current index entry

Overrides:

seek in class LazyTreeReader

Throws:

IOException

seek

protected void seek(int index)
             throws IOException

Specified by:

seek in class LazyTreeReader

Throws:

IOException

close

public void close()
           throws IOException

Overrides:

close in class LazyTreeReader

Throws:

IOException