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sqlpp11/tests/postgresql/usage/BasicConstConfig.cpp
Carel eac9a6e5e3
Const connection config (#494)
- The postgres connection does not change the connection_config thus passing it as const.
- Implies 'thread safety' when using the same config for multiple connections

Co-authored-by: Carel Combrink <carel.combrink@vastech.co.za>
2023-06-20 06:28:22 +02:00

59 lines
2.1 KiB
C++

/*
* Copyright (c) 2017, Volker Aßmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <iostream>
#include <memory>
#include <stdexcept>
#include <sqlpp11/postgresql/connection.h>
#include <sqlpp11/postgresql/exception.h>
#include <sqlpp11/sqlpp11.h>
namespace sql = sqlpp::postgresql;
int BasicConstConfig(int, char*[])
{
const std::shared_ptr<const sql::connection_config> const_config = []()
{
auto config = std::make_shared<sql::connection_config>();
config->host = "localhost";
config->user = "unknown_user_must_fail";
return config;
}();
try
{
sql::connection db(const_config);
throw std::logic_error("should never reach this point");
}
catch (const sqlpp::postgresql::broken_connection& ex)
{
std::cout << "Got exception: '" << ex.what() << "'";
return 0;
}
return 1;
}