org.apache.drill.exec.expr.fn.output

Class DecimalReturnTypeInference.DecimalAddReturnTypeInference

java.lang.Object

org.apache.drill.exec.expr.fn.output.DecimalReturnTypeInference.DecimalAddReturnTypeInference

All Implemented Interfaces:

ReturnTypeInference

Enclosing class:

DecimalReturnTypeInference

public static class DecimalReturnTypeInference.DecimalAddReturnTypeInference
extends Object
implements ReturnTypeInference

Return type calculation implementation for functions with return type set as FunctionTemplate.ReturnType.DECIMAL_ADD_SCALE.

Field Summary

Fields

Modifier and Type	Field and Description
static DecimalReturnTypeInference.DecimalAddReturnTypeInference	INSTANCE

Constructor Summary

Constructors

Constructor and Description
DecimalReturnTypeInference.DecimalAddReturnTypeInference()

Method Summary

Methods

Modifier and Type	Method and Description
TypeProtos.MajorType	getType(List<LogicalExpression> logicalExpressions, FunctionAttributes attributes) This return type is used by add and subtract functions for decimal data type.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final DecimalReturnTypeInference.DecimalAddReturnTypeInference INSTANCE

Constructor Detail

DecimalReturnTypeInference.DecimalAddReturnTypeInference

public DecimalReturnTypeInference.DecimalAddReturnTypeInference()

Method Detail

getType

public TypeProtos.MajorType getType(List<LogicalExpression> logicalExpressions,
                           FunctionAttributes attributes)

This return type is used by add and subtract functions for decimal data type. DecimalScalePrecisionAddFunction is used to compute the output types' scale and precision.

Specified by:

getType in interface ReturnTypeInference

Parameters:

logicalExpressions - logical expressions

attributes - function attributes

Returns:

return type