org.apache.flink.formats.parquet.vector.reader

Class ParquetDataColumnReaderFactory.DefaultParquetDataColumnReader

java.lang.Object

org.apache.flink.formats.parquet.vector.reader.ParquetDataColumnReaderFactory.DefaultParquetDataColumnReader

All Implemented Interfaces:

ParquetDataColumnReader

Direct Known Subclasses:

ParquetDataColumnReaderFactory.TypesFromInt96PageReader

Enclosing class:

ParquetDataColumnReaderFactory

public static class ParquetDataColumnReaderFactory.DefaultParquetDataColumnReader
extends Object
implements ParquetDataColumnReader

The default data column reader for existing Parquet page reader which works for both dictionary or non dictionary types, Mirror from dictionary encoding path.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.parquet.column.Dictionary	dict
protected org.apache.parquet.column.values.ValuesReader	valuesReader

Constructor Summary

Constructors

Constructor and Description
DefaultParquetDataColumnReader(org.apache.parquet.column.Dictionary dict)
DefaultParquetDataColumnReader(org.apache.parquet.column.values.ValuesReader valuesReader)

Method Summary

Modifier and Type	Method and Description
org.apache.parquet.column.Dictionary	getDictionary()
void	initFromPage(int i, org.apache.parquet.bytes.ByteBufferInputStream in) Initialize the reader by page data.
boolean	readBoolean()
boolean	readBoolean(int id)
byte[]	readBytes()
byte[]	readBytes(int id)
double	readDouble()
double	readDouble(int id)
float	readFloat()
float	readFloat(int id)
int	readInteger()
int	readInteger(int id)
long	readLong()
long	readLong(int id)
int	readSmallInt()
int	readSmallInt(int id)
TimestampData	readTimestamp()
TimestampData	readTimestamp(int id)
int	readTinyInt()
int	readTinyInt(int id)
int	readValueDictionaryId()
void	skip()

Methods inherited from class java.lang.Object

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

Field Detail

valuesReader

protected final org.apache.parquet.column.values.ValuesReader valuesReader

dict

protected final org.apache.parquet.column.Dictionary dict

Constructor Detail

DefaultParquetDataColumnReader

public DefaultParquetDataColumnReader(org.apache.parquet.column.values.ValuesReader valuesReader)

DefaultParquetDataColumnReader

public DefaultParquetDataColumnReader(org.apache.parquet.column.Dictionary dict)

Method Detail

initFromPage

public void initFromPage(int i,
                         org.apache.parquet.bytes.ByteBufferInputStream in)
                  throws IOException

Description copied from interface: ParquetDataColumnReader

Initialize the reader by page data.

Specified by:

initFromPage in interface ParquetDataColumnReader

Parameters:

i - value count

in - page data

Throws:

IOException

readBoolean

public boolean readBoolean()

Specified by:

readBoolean in interface ParquetDataColumnReader

Returns:

the next Boolean from the page

readBoolean

public boolean readBoolean(int id)

Specified by:

readBoolean in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Boolean from the dictionary by id

readBytes

public byte[] readBytes()

Specified by:

readBytes in interface ParquetDataColumnReader

Returns:

the next Bytes from the page

readBytes

public byte[] readBytes(int id)

Specified by:

readBytes in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Bytes from the dictionary by id

readFloat

public float readFloat()

Specified by:

readFloat in interface ParquetDataColumnReader

Returns:

the next Float from the page

readFloat

public float readFloat(int id)

Specified by:

readFloat in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Float from the dictionary by id

readDouble

public double readDouble()

Specified by:

readDouble in interface ParquetDataColumnReader

Returns:

the next Double from the page

readDouble

public double readDouble(int id)

Specified by:

readDouble in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Double from the dictionary by id

readTimestamp

public TimestampData readTimestamp()

Specified by:

readTimestamp in interface ParquetDataColumnReader

Returns:

the next TimestampData from the page

readTimestamp

public TimestampData readTimestamp(int id)

Specified by:

readTimestamp in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the TimestampData from the dictionary by id

readInteger

public int readInteger()

Specified by:

readInteger in interface ParquetDataColumnReader

Returns:

the next Integer from the page

readInteger

public int readInteger(int id)

Specified by:

readInteger in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Integer from the dictionary by id

readLong

public long readLong(int id)

Specified by:

readLong in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Long from the dictionary by id

readLong

public long readLong()

Specified by:

readLong in interface ParquetDataColumnReader

Returns:

the next Long from the page

readSmallInt

public int readSmallInt()

Specified by:

readSmallInt in interface ParquetDataColumnReader

Returns:

the next SmallInt from the page

readSmallInt

public int readSmallInt(int id)

Specified by:

readSmallInt in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the Small Int from the dictionary by id

readTinyInt

public int readTinyInt()

Specified by:

readTinyInt in interface ParquetDataColumnReader

Returns:

the next TinyInt from the page

readTinyInt

public int readTinyInt(int id)

Specified by:

readTinyInt in interface ParquetDataColumnReader

Parameters:

id - in dictionary

Returns:

the tiny int from the dictionary by id

readValueDictionaryId

public int readValueDictionaryId()

Specified by:

readValueDictionaryId in interface ParquetDataColumnReader

Returns:

the next Dictionary ID from the page

skip

public void skip()

getDictionary

public org.apache.parquet.column.Dictionary getDictionary()

Specified by:

getDictionary in interface ParquetDataColumnReader

Returns:

the underlying dictionary if current reader is dictionary encoded