NoneAgg Struct Reference

Aggregator that ignores all inputs and always returns NULL. More...

Inheritance diagram for NoneAgg:

Collaboration diagram for NoneAgg:

Public Member Functions
void	add (const AggValue &x) override
	Incorporate one input value into the running aggregate.
AggValue	finalize () const override
	Return the final aggregate result.
AggregationOperator	op () const override
	Return the aggregation operator this accumulator implements.
ValueType	inputType () const override
	Return the type of the input values accepted by add().
Public Member Functions inherited from Aggregator
virtual	~Aggregator ()=default
virtual ValueType	resultType () const
	Return the type of the value returned by finalize().

Detailed Description

Aggregator that ignores all inputs and always returns NULL.

Definition at line 67 of file Aggregation.cpp.

Member Function Documentation

add()

void NoneAgg::add ( const AggValue &  x )

inlineoverridevirtual

Incorporate one input value into the running aggregate.

Parameters

x	Input value to add.

Implements Aggregator.

Definition at line 68 of file Aggregation.cpp.

finalize()

AggValue NoneAgg::finalize ( ) const

inlineoverridevirtual

Return the final aggregate result.

Returns

The accumulated aggregate as an AggValue.

Implements Aggregator.

Definition at line 70 of file Aggregation.cpp.

inputType()

ValueType NoneAgg::inputType ( ) const

inlineoverridevirtual

Return the type of the input values accepted by add().

Returns

The ValueType of values passed to add().

Implements Aggregator.

Definition at line 76 of file Aggregation.cpp.

op()

AggregationOperator NoneAgg::op ( ) const

inlineoverridevirtual

Return the aggregation operator this accumulator implements.

Returns

The AggregationOperator enum value for this accumulator.

Implements Aggregator.

Definition at line 73 of file Aggregation.cpp.

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The documentation for this struct was generated from the following file:

• /home/pierre/git/software/provsql/src/Aggregation.cpp