mirror of
https://github.com/boostorg/mysql.git
synced 2026-01-28 19:32:10 +00:00
86e0eacd6a
* SSL/TLS rework * Unified connection object * New prepared_statement::execute interface * New resultset::read_one mechanic * Unified row object * null_t type * Travis to GitHub actions migration * Integration test rework
98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
//
|
|
// Copyright (c) 2019-2022 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
|
|
#include "boost/mysql/connection.hpp"
|
|
#include <boost/asio/ip/tcp.hpp>
|
|
#include <boost/asio/ssl/context.hpp>
|
|
#include <boost/mysql.hpp>
|
|
#include <boost/asio/io_context.hpp>
|
|
#include <boost/system/system_error.hpp>
|
|
#include <iostream>
|
|
#include <string>
|
|
|
|
/**
|
|
* For this example, we will be using the 'boost_mysql_examples' database.
|
|
* You can get this database by running db_setup.sql.
|
|
* This example assumes you are connecting to a localhost MySQL server.
|
|
*
|
|
* This example uses synchronous functions and handles errors using exceptions.
|
|
*/
|
|
|
|
void main_impl(int argc, char** argv)
|
|
{
|
|
if (argc != 4)
|
|
{
|
|
std::cerr << "Usage: " << argv[0] << " <username> <password> <server-hostname>\n";
|
|
exit(1);
|
|
}
|
|
|
|
//[tutorial_connection
|
|
// The execution context, required to run I/O operations
|
|
boost::asio::io_context ctx;
|
|
|
|
// The SSL context, required to establish TLS connections.
|
|
// The default SSL options are good enough for us at this point.
|
|
boost::asio::ssl::context ssl_ctx (boost::asio::ssl::context::tls_client);
|
|
|
|
// The object defining the connection to the MySQL server.
|
|
boost::mysql::tcp_ssl_connection conn (ctx.get_executor(), ssl_ctx);
|
|
//]
|
|
|
|
//[tutorial_connect
|
|
// Resolve the hostname to get a collection of endpoints
|
|
boost::asio::ip::tcp::resolver resolver (ctx.get_executor());
|
|
auto endpoints = resolver.resolve(argv[3], boost::mysql::default_port_string);
|
|
|
|
// The username and password to use
|
|
boost::mysql::connection_params params (
|
|
argv[1], // username
|
|
argv[2] // password
|
|
);
|
|
|
|
// Connect to the server using the first endpoint returned by the resolver
|
|
conn.connect(*endpoints.begin(), params);
|
|
//]
|
|
|
|
|
|
//[tutorial_query
|
|
const char* sql = "SELECT \"Hello world!\"";
|
|
boost::mysql::tcp_ssl_resultset result = conn.query(sql);
|
|
//]
|
|
|
|
//[tutorial_read
|
|
std::vector<boost::mysql::row> employees = result.read_all();
|
|
//]
|
|
|
|
//[tutorial_values
|
|
const boost::mysql::row& first_row = employees.at(0);
|
|
boost::mysql::value first_value = first_row.values().at(0);
|
|
std::cout << first_value << std::endl;
|
|
//]
|
|
|
|
//[tutorial_close
|
|
conn.close();
|
|
//]
|
|
}
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
try
|
|
{
|
|
main_impl(argc, argv);
|
|
}
|
|
catch (const boost::system::system_error& err)
|
|
{
|
|
std::cerr << "Error: " << err.what() << ", error code: " << err.code() << std::endl;
|
|
return 1;
|
|
}
|
|
catch (const std::exception& err)
|
|
{
|
|
std::cerr << "Error: " << err.what() << std::endl;
|
|
return 1;
|
|
}
|
|
}
|