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 and Description
static SameInOutLengthReturnTypeInference	INSTANCE

Constructor Summary

Constructors

Constructor and Description
SameInOutLengthReturnTypeInference()

Method Summary

Methods

Modifier and Type	Method and 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 Detail

INSTANCE

public static final SameInOutLengthReturnTypeInference INSTANCE

Constructor Detail

SameInOutLengthReturnTypeInference

public SameInOutLengthReturnTypeInference()

Method Detail

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