org.apache.spark.sql.columnar.compression

Class RunLengthEncoding.Encoder<T extends org.apache.spark.sql.types.NativeType>

Object

org.apache.spark.sql.columnar.compression.RunLengthEncoding.Encoder<T>

All Implemented Interfaces:

Encoder<T>

Enclosing class:

RunLengthEncoding

public static class RunLengthEncoding.Encoder<T extends org.apache.spark.sql.types.NativeType>
extends Object
implements Encoder<T>

Constructor Summary

Constructors

Constructor and Description
RunLengthEncoding.Encoder(NativeColumnType<T> columnType)

Method Summary

Methods

Modifier and Type	Method and Description
java.nio.ByteBuffer	compress(java.nio.ByteBuffer from, java.nio.ByteBuffer to)
int	compressedSize()
void	gatherCompressibilityStats(org.apache.spark.sql.Row row, int ordinal)
int	uncompressedSize()

Methods inherited from class Object

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

Methods inherited from interface org.apache.spark.sql.columnar.compression.Encoder

compressionRatio

Constructor Detail

RunLengthEncoding.Encoder

public RunLengthEncoding.Encoder(NativeColumnType<T> columnType)

Method Detail

uncompressedSize

public int uncompressedSize()

Specified by:

uncompressedSize in interface Encoder<T extends org.apache.spark.sql.types.NativeType>

compressedSize

public int compressedSize()

Specified by:

compressedSize in interface Encoder<T extends org.apache.spark.sql.types.NativeType>

gatherCompressibilityStats

public void gatherCompressibilityStats(org.apache.spark.sql.Row row,
                              int ordinal)

Specified by:

gatherCompressibilityStats in interface Encoder<T extends org.apache.spark.sql.types.NativeType>

compress

public java.nio.ByteBuffer compress(java.nio.ByteBuffer from,
                           java.nio.ByteBuffer to)

Specified by:

compress in interface Encoder<T extends org.apache.spark.sql.types.NativeType>