Package org.apache.drill.exec.record.metadata

Class ColumnBuilder

java.lang.Object

org.apache.drill.exec.record.metadata.ColumnBuilder

public class ColumnBuilder
extends Object

Build a column schema (AKA "materialized field") based on name and a variety of schema options. Every column needs a name and (minor) type, some may need a mode other than required, may need a width, may need scale and precision, and so on.

Constructor Summary

Constructors

Constructor	Description
ColumnBuilder(String name, TypeProtos.MinorType type)

Method Summary

Modifier and Type	Method	Description
MaterializedField	build()
ColumnBuilder	setMode(TypeProtos.DataMode mode)
ColumnBuilder	setPrecision(int precision)
ColumnBuilder	setPrecisionAndScale(int precision, int scale)
ColumnBuilder	setWidth(int width)

Methods inherited from class java.lang.Object

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

Constructor Details

ColumnBuilder

public ColumnBuilder(String name,
 TypeProtos.MinorType type)

Method Details

setMode

public ColumnBuilder setMode(TypeProtos.DataMode mode)

setWidth

public ColumnBuilder setWidth(int width)

setPrecision

public ColumnBuilder setPrecision(int precision)

setPrecisionAndScale

public ColumnBuilder setPrecisionAndScale(int precision,
 int scale)

build

public MaterializedField build()