org.apache.spark.sql.columnar

Interface ColumnBuilder

All Known Subinterfaces:

CompressibleColumnBuilder<T>, NullableColumnBuilder

All Known Implementing Classes:

BasicColumnBuilder, BinaryColumnBuilder, BooleanColumnBuilder, ByteColumnBuilder, ComplexColumnBuilder, DateColumnBuilder, DoubleColumnBuilder, FloatColumnBuilder, GenericColumnBuilder, IntColumnBuilder, LongColumnBuilder, NativeColumnBuilder, ShortColumnBuilder, StringColumnBuilder, TimestampColumnBuilder

public interface ColumnBuilder

Method Summary

Methods

Modifier and Type	Method and Description
void	appendFrom(Row row, int ordinal) Appends row(ordinal) to the column builder.
java.nio.ByteBuffer	build() Returns the final columnar byte buffer.
ColumnStats	columnStats() Column statistics information
void	initialize(int initialSize, String columnName, boolean useCompression) Initializes with an approximate lower bound on the expected number of elements in this column.

Method Detail

initialize

void initialize(int initialSize,
              String columnName,
              boolean useCompression)

Initializes with an approximate lower bound on the expected number of elements in this column.

appendFrom

void appendFrom(Row row,
              int ordinal)

Appends row(ordinal) to the column builder.

columnStats

ColumnStats columnStats()

Column statistics information

build

java.nio.ByteBuffer build()

Returns the final columnar byte buffer.