oxy::api::metadata::category::select_fn Struct Reference

Function object to select categories from the metadata database based on a where clause. More...

#include <categories.hpp>

Public Types
using	coro_t = boost::coroutines2::coroutine<oid_t>

Public Member Functions
auto	operator() (connection_ptr const &conn) const -> coro_t::pull_type
auto	operator() (connection_ptr const &conn, std::string const &where_clause) const -> coro_t::pull_type

Detailed Description

Function object to select categories from the metadata database based on a where clause.

This function object provides an operator() that takes a connection pointer and returns a pull coroutine for selecting categories. It also provides an overload that takes a connection pointer and a where clause string for filtering the selection. It is designed to be used in a constexpr context for compile-time evaluation of select operations.

Member Function Documentation

operator()() [1/2]

auto oxy::api::metadata::category::select_fn::operator()

(

connection_ptr const &

conn

)

const -> coro_t::pull_type

Parameters

conn	- The connection pointer to the metadata database.

Returns

A coroutine pull type that yields categories from the metadata database.

operator()() [2/2]

auto oxy::api::metadata::category::select_fn::operator()	(	connection_ptr const &	conn,
		std::string const &	where_clause ) const -> coro_t::pull_type

Parameters

conn	- The connection pointer to the metadata database.
where_clause	- A string representing the where clause for filtering the selection.

Returns

A coroutine pull type that yields categories from the metadata database based on the where clause.