sl::log::ProjectionFilter< TProjection, TUnaryPredicate > Class Template Reference

Combines a projection on Record type with a predicate into an invokable object. More...

#include <Filters.hpp>

Public Types
using	Projection_t = std::remove_cvref_t< TProjection >
using	UnaryPredicate_t = std::remove_cvref_t< TUnaryPredicate >

Public Member Functions
constexpr	ProjectionFilter (TProjection projection, TUnaryPredicate predicate) noexcept(std::is_nothrow_move_constructible_v< Projection_t > &&std::is_nothrow_move_constructible_v< UnaryPredicate_t >)
	Constructor. More...
template<Record TRecord>
constexpr bool	operator() (const TRecord &rec)
	Call-operator. More...

Detailed Description

template<class TProjection, class TUnaryPredicate>
class sl::log::ProjectionFilter< TProjection, TUnaryPredicate >

Combines a projection on Record type with a predicate into an invokable object.

Template Parameters

TProjection	A Projection type, which has to accept an object of the used Record type and must return something
TUnaryPredicate	A predicate type, which accepts objects returned by TProjection

Instances of this class are invokable with any types, which follow the Record concept. Due to possible custom implementations or adjustments ProjectionFilter can't rely on the libraries BaseRecord type and therefore is not able to pre-check the provided Projection and Predicate via concept.

Member Typedef Documentation

Projection_t

template<class TProjection , class TUnaryPredicate >

using sl::log::ProjectionFilter< TProjection, TUnaryPredicate >::Projection_t = std::remove_cvref_t<TProjection>

UnaryPredicate_t

template<class TProjection , class TUnaryPredicate >

using sl::log::ProjectionFilter< TProjection, TUnaryPredicate >::UnaryPredicate_t = std::remove_cvref_t<TUnaryPredicate>

Constructor & Destructor Documentation

ProjectionFilter()

template<class TProjection , class TUnaryPredicate >

constexpr sl::log::ProjectionFilter< TProjection, TUnaryPredicate >::ProjectionFilter ( TProjection  projection, TUnaryPredicate  predicate  )

inlineconstexprnoexcept

Constructor.

Parameters

projection	Invokable object
predicate	Predicate object

Member Function Documentation

operator()()

template<class TProjection , class TUnaryPredicate >

template<Record TRecord>

constexpr bool sl::log::ProjectionFilter< TProjection, TUnaryPredicate >::operator() ( const TRecord &  rec )

inlineconstexpr

Call-operator.

Template Parameters

TRecord

Concrete type of the used Record object

Parameters

rec	Record object

Returns

Returns true, if the Record should be handled. False if skipped.

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

• Filters.hpp