org.apache.parquet.column.values.delta

Class DeltaBinaryPackingValuesReader

java.lang.Object

org.apache.parquet.column.values.ValuesReader

org.apache.parquet.column.values.delta.DeltaBinaryPackingValuesReader

public class DeltaBinaryPackingValuesReader
extends ValuesReader

Read values written by DeltaBinaryPackingValuesWriter

Constructor Summary

Constructors

Constructor and Description
DeltaBinaryPackingValuesReader()

Method Summary

Modifier and Type	Method and Description
void	initFromPage(int valueCount, ByteBufferInputStream stream) eagerly loads all the data into memory
int	readInteger()
long	readLong()
void	skip() Skips the next value in the page
void	skip(int n) Skips the next n values in the page

Methods inherited from class org.apache.parquet.column.values.ValuesReader

getNextOffset, initFromPage, initFromPage, readBoolean, readBytes, readDouble, readFloat, readValueDictionaryId, updateNextOffset

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,
                         ByteBufferInputStream stream)
                  throws IOException

eagerly loads all the data into memory

Overrides:

initFromPage in class ValuesReader

Parameters:

valueCount - count of values in this page

stream - an input stream containing the page data at the correct offset

Throws:

IOException - if there is an exception while reading from the input stream

skip

public void skip()

Description copied from class: ValuesReader

Skips the next value in the page

Specified by:

skip in class ValuesReader

skip

public void skip(int n)

Description copied from class: ValuesReader

Skips the next n values in the page

Overrides:

skip in class ValuesReader

Parameters:

n - the number of values to be skipped

readInteger

public int readInteger()

Overrides:

readInteger in class ValuesReader

Returns:

the next integer from the page

readLong

public long readLong()

Overrides:

readLong in class ValuesReader

Returns:

the next long from the page