parquet.column.values.bitpacking

Class ByteBasedBitPackingEncoder

java.lang.Object

parquet.column.values.bitpacking.ByteBasedBitPackingEncoder

public class ByteBasedBitPackingEncoder
extends Object

Uses the generated Byte based bit packing to write ints into a BytesInput

Author:

Julien Le Dem

Constructor Summary

Constructors

Constructor and Description
ByteBasedBitPackingEncoder(int bitWidth, Packer packer)

Method Summary

Methods

Modifier and Type	Method and Description
long	getAllocatedSize()
long	getBufferSize()
String	memUsageString(String prefix)
BytesInput	toBytes()
void	writeInt(int value) writes an int using the requested number of bits.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteBasedBitPackingEncoder

public ByteBasedBitPackingEncoder(int bitWidth,
                          Packer packer)

Parameters:

bitWidth - the number of bits used to encode an int

Method Detail

writeInt

public void writeInt(int value)
              throws IOException

writes an int using the requested number of bits. accepts only value < 2^bitWidth

Parameters:

value - the value to write

Throws:

IOException

toBytes

public BytesInput toBytes()
                   throws IOException

Returns:

the bytes representing the packed values

Throws:

IOException

getBufferSize

public long getBufferSize()

Returns:

size of the data as it would be written

getAllocatedSize

public long getAllocatedSize()

Returns:

total memory allocated

memUsageString

public String memUsageString(String prefix)