Package org.apache.drill.exec.store.parquet.decimal

Class DecimalValueWriter

java.lang.Object

org.apache.drill.exec.store.parquet.decimal.DecimalValueWriter

Direct Known Subclasses:

BinaryDecimalParquetValueWriter, FixedLenDecimalParquetValueWriter, Int32DecimalParquetValueWriter, Int64DecimalParquetValueWriter

public abstract class DecimalValueWriter
extends Object

Constructor Summary

Constructors

Constructor	Description
DecimalValueWriter()

Method Summary

Modifier and Type	Method	Description
static DecimalValueWriter	getDecimalValueWriterForType(org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName type)	Creates and returns writer suitable for specified PrimitiveType.PrimitiveTypeName type.
abstract void	writeValue(org.apache.parquet.io.api.RecordConsumer consumer, DrillBuf buffer, int start, int end, int precision)	Takes value from specified DrillBuf buffer, converts it into required format if needed and passes the value into specified RecordConsumer consumer.

Methods inherited from class java.lang.Object

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

Constructor Details

DecimalValueWriter

public DecimalValueWriter()

Method Details

writeValue

public abstract void writeValue(org.apache.parquet.io.api.RecordConsumer consumer,
 DrillBuf buffer,
 int start,
 int end,
 int precision)

Takes value from specified DrillBuf buffer, converts it into required format if needed and passes the value into specified RecordConsumer consumer.

Parameters:

consumer - abstraction for writing records

buffer - the source of data that should be written

start - start position of data in buffer

end - end position of data in buffer

precision - precision of the value that should be stored

getDecimalValueWriterForType

public static DecimalValueWriter getDecimalValueWriterForType(org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName type)

Creates and returns writer suitable for specified PrimitiveType.PrimitiveTypeName type.

Parameters:

type - the type of the value in output file.

Returns:

writer for decimal values.