org.apache.parquet.column.values.plain

Class PlainValuesWriter

java.lang.Object

org.apache.parquet.column.values.ValuesWriter

org.apache.parquet.column.values.plain.PlainValuesWriter

public class PlainValuesWriter
extends ValuesWriter

Plain encoding except for booleans

Author:

Julien Le Dem

Field Summary

Fields

Modifier and Type	Field and Description
static Charset	CHARSET

Constructor Summary

Constructors

Constructor and Description
PlainValuesWriter(int initialSize, int pageSize, ByteBufferAllocator allocator)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Called to close the values writer.
long	getAllocatedSize() ( > ValuesWriter.getBufferedSize() )
long	getBufferedSize() used to decide if we want to work to the next page
BytesInput	getBytes()
Encoding	getEncoding() called after getBytes() and before reset()
String	memUsageString(String prefix)
void	reset() called after getBytes() to reset the current buffer and start writing the next page
void	writeByte(int value)
void	writeBytes(Binary v)
void	writeDouble(double v)
void	writeFloat(float v)
void	writeInteger(int v)
void	writeLong(long v)

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

resetDictionary, toDictPageAndClose, writeBoolean

Methods inherited from class java.lang.Object

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

Field Detail

CHARSET

public static final Charset CHARSET

Constructor Detail

PlainValuesWriter

public PlainValuesWriter(int initialSize,
                 int pageSize,
                 ByteBufferAllocator allocator)

Method Detail

writeBytes

public final void writeBytes(Binary v)

Overrides:

writeBytes in class ValuesWriter

Parameters:

v - the value to encode

writeInteger

public final void writeInteger(int v)

Overrides:

writeInteger in class ValuesWriter

Parameters:

v - the value to encode

writeLong

public final void writeLong(long v)

Overrides:

writeLong in class ValuesWriter

Parameters:

v - the value to encode

writeFloat

public final void writeFloat(float v)

Overrides:

writeFloat in class ValuesWriter

Parameters:

v - the value to encode

writeDouble

public final void writeDouble(double v)

Overrides:

writeDouble in class ValuesWriter

Parameters:

v - the value to encode

writeByte

public void writeByte(int value)

Overrides:

writeByte in class ValuesWriter

Parameters:

value - the value to encode

getBufferedSize

public long getBufferedSize()

Description copied from class: ValuesWriter

used to decide if we want to work to the next page

Specified by:

getBufferedSize in class ValuesWriter

Returns:

the size of the currently buffered data (in bytes)

getBytes

public BytesInput getBytes()

Specified by:

getBytes in class ValuesWriter

Returns:

the bytes buffered so far to write to the current page

reset

public void reset()

Description copied from class: ValuesWriter

called after getBytes() to reset the current buffer and start writing the next page

Specified by:

reset in class ValuesWriter

close

public void close()

Description copied from class: ValuesWriter

Called to close the values writer. Any output stream is closed and can no longer be used. All resources are released.

Overrides:

close in class ValuesWriter

getAllocatedSize

public long getAllocatedSize()

Description copied from class: ValuesWriter

( > ValuesWriter.getBufferedSize() )

Specified by:

getAllocatedSize in class ValuesWriter

Returns:

the allocated size of the buffer

getEncoding

public Encoding getEncoding()

Description copied from class: ValuesWriter

called after getBytes() and before reset()

Specified by:

getEncoding in class ValuesWriter

Returns:

the encoding that was used to encode the bytes

memUsageString

public String memUsageString(String prefix)

Specified by:

memUsageString in class ValuesWriter