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

Class SameInOutLengthReturnTypeInference

java.lang.Object

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

All Implemented Interfaces:

ReturnTypeInference

public class SameInOutLengthReturnTypeInference
extends Object
implements ReturnTypeInference

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

Field Summary

Fields

Modifier and Type	Field	Description
static final SameInOutLengthReturnTypeInference	INSTANCE

Constructor Summary

Constructors

Constructor	Description
SameInOutLengthReturnTypeInference()

Method Summary

Modifier and Type	Method	Description
TypeProtos.MajorType	getType(List<LogicalExpression> logicalExpressions, FunctionAttributes attributes)	Defines function return type and sets precision and scale if input type has them.

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final SameInOutLengthReturnTypeInference INSTANCE

Constructor Details

SameInOutLengthReturnTypeInference

public SameInOutLengthReturnTypeInference()

Method Details

getType

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

Defines function return type and sets precision and scale if input type has them.

Specified by:

getType in interface ReturnTypeInference

Parameters:

logicalExpressions - logical expressions

attributes - function attributes

Returns:

return type