com.facebook.hive.orc.lazy

Class LazyDoubleTreeReader

java.lang.Object

com.facebook.hive.orc.lazy.LazyTreeReader

com.facebook.hive.orc.lazy.LazyDoubleTreeReader

public class LazyDoubleTreeReader
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
LazyDoubleTreeReader(int columnId, long rowIndexStride)

Method Summary

Modifier and Type	Method and Description
void	close()
Object	createWritableFromLatest(Object previous) When a client asks for a writable object after materializing a primitive, create a writable from previous value read from stream.
int	loadIndeces(List<OrcProto.RowIndexEntry> rowIndexEntries, int startIndex) Read any indeces that will be needed and return a startIndex after the values that have been read.
Object	next(Object previous) Give the next double as a Writable object.
double	nextDouble(boolean readStream) Give the next double as a primitive
void	seek(int index)
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, get, getBoolean, getDouble, getFloat, getInComplexType, getInt, getLong, getShort, nextBoolean, nextFloat, nextInt, nextIsNull, nextIsNullInComplexType, nextLong, nextShort, seek, seekToPresentRow, seekToRow, skipRowsInComplexType

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyDoubleTreeReader

public LazyDoubleTreeReader(int columnId,
                            long rowIndexStride)

Method Detail

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

public void seek(int index)
          throws IOException

Specified by:

seek in class LazyTreeReader

Throws:

IOException

loadIndeces

public int loadIndeces(List<OrcProto.RowIndexEntry> rowIndexEntries,
                       int startIndex)

Description copied from class: LazyTreeReader

Read any indeces that will be needed and return a startIndex after the values that have been read.

Overrides:

loadIndeces in class LazyTreeReader

createWritableFromLatest

public Object createWritableFromLatest(Object previous)
                                throws IOException

Description copied from class: LazyTreeReader

When a client asks for a writable object after materializing a primitive, create a writable from previous value read from stream.

Overrides:

createWritableFromLatest in class LazyTreeReader

Throws:

IOException

nextDouble

public double nextDouble(boolean readStream)
                  throws IOException

Give the next double as a primitive

Overrides:

nextDouble in class LazyTreeReader

Throws:

IOException

next

public Object next(Object previous)
            throws IOException

Give the next double as a Writable object.

Specified by:

next in class LazyTreeReader

Returns:

Throws:

IOException

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

close

public void close()
           throws IOException

Overrides:

close in class LazyTreeReader

Throws:

IOException