iceberg::VoidTransform Class Reference

Void transform that discards the input and always returns null. More...

#include <transform_function.h>

Inheritance diagram for iceberg::VoidTransform:

Public Member Functions
	VoidTransform (std::shared_ptr< Type > const &source_type)
Result< Literal >	Transform (const Literal &literal) override
	Returns a null literal.
std::shared_ptr< Type >	ResultType () const override
	Returns the same type as source_type.
Public Member Functions inherited from iceberg::TransformFunction
	TransformFunction (TransformType transform_type, std::shared_ptr< Type > source_type)
TransformType	transform_type () const
	Get the transform type.
const std::shared_ptr< Type > &	source_type () const
	Get the source type of transform function.

Static Public Member Functions
static Result< std::unique_ptr< TransformFunction > >	Make (std::shared_ptr< Type > const &source_type)
	Create a VoidTransform.

Detailed Description

Void transform that discards the input and always returns null.

Constructor & Destructor Documentation

VoidTransform()

iceberg::VoidTransform::VoidTransform ( std::shared_ptr< Type > const &  source_type )

explicit

Parameters

source_type

Input type (ignored).

Member Function Documentation

Make()

Result< std::unique_ptr< TransformFunction > > iceberg::VoidTransform::Make ( std::shared_ptr< Type > const &  source_type )

static

Create a VoidTransform.

Parameters

source_type

Input type (ignored).

Returns

A Result containing the VoidTransform or an error.

ResultType()

std::shared_ptr< Type > iceberg::VoidTransform::ResultType ( ) const

overridevirtual

Returns the same type as source_type.

Implements iceberg::TransformFunction.

Transform()

Result< Literal > iceberg::VoidTransform::Transform ( const Literal &  literal )

overridevirtual

Returns a null literal.

Implements iceberg::TransformFunction.

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The documentation for this class was generated from the following files:

• iceberg/transform_function.h
• iceberg/transform_function.cc