parquet.column.values.delta

Class DeltaBinaryPackingValuesReader

java.lang.Object

parquet.column.values.ValuesReader

parquet.column.values.delta.DeltaBinaryPackingValuesReader

public class DeltaBinaryPackingValuesReader
extends ValuesReader

Read values written by DeltaBinaryPackingValuesWriter

Author:

Tianshuo Deng

Constructor Summary

Constructors

Constructor and Description
DeltaBinaryPackingValuesReader()

Method Summary

Methods

Modifier and Type	Method and Description
int	getNextOffset() Called to return offset of the next section
void	initFromPage(int valueCount, byte[] page, int offset) eagerly load all the data into memory
int	readInteger()
void	skip() Skips the next value in the page

Methods inherited from class parquet.column.values.ValuesReader

readBoolean, readBytes, readDouble, readFloat, readLong, readValueDictionaryId

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaBinaryPackingValuesReader

public DeltaBinaryPackingValuesReader()

Method Detail

initFromPage

public void initFromPage(int valueCount,
                byte[] page,
                int offset)
                  throws IOException

eagerly load all the data into memory

Specified by:

initFromPage in class ValuesReader

Parameters:

valueCount - count of values in this page

page - the array to read from containing the page data (repetition levels, definition levels, data)

offset - where to start reading from in the page

Throws:

IOException

getNextOffset

public int getNextOffset()

Description copied from class: ValuesReader

Called to return offset of the next section

Overrides:

getNextOffset in class ValuesReader

Returns:

offset of the next section

skip

public void skip()

Description copied from class: ValuesReader

Skips the next value in the page

Specified by:

skip in class ValuesReader

readInteger

public int readInteger()

Overrides:

readInteger in class ValuesReader

Returns:

the next integer from the page