cppgres::postgres_function< Func > Struct Template Reference

Postgres function implemented in C++. More...

#include <function.hpp>

Public Types
using	traits = utils::function_traits::function_traits< Func >
using	argument_types = typename traits::argument_types
using	return_type = utils::function_traits::invoke_result_from_tuple_t< Func, argument_types >

Public Member Functions
	postgres_function (Func f)
auto	operator() (FunctionCallInfo fc) -> ::Datum

Public Attributes
Func	func

Static Public Attributes
static constexpr std::size_t	arity = traits::arity

Detailed Description

template<datumable_function Func>
struct cppgres::postgres_function< Func >

Postgres function implemented in C++.

It wraps a function to handle conversion of arguments and return, enforce arity, convert C++ exceptions to errors. Additionally, it handles Set-Returning Functions (SRFs), implemented by functions returning cppgres::datumable_iterator.

Template Parameters

Func	function (or lambda) that conforms to the cppgres::datumable_function concept.

Member Function Documentation

operator()()

template<datumable_function Func>

auto cppgres::postgres_function< Func >::operator() ( FunctionCallInfo  fc ) -> ::Datum

inline

Invoke the function as per Postgres convention

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

• src/cppgres/function.hpp