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sqlpp11/tests/postgresql/usage/Transaction.cpp
Roland Bock 4c942600bb Started to migrate postgresql connector into sqlpp11 repo.
Removed timezone handling in the process (needs to be documented).
Note: on_conflict does not check for constraints (needs to be documented).
Note: some of the constraints tests seem to be aiming for a different static_assert.
2021-11-14 08:11:53 +01:00

131 lines
4.1 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/alias_provider.h>
#include <sqlpp11/custom_query.h>
#include <sqlpp11/postgresql/connection.h>
#include <sqlpp11/sqlpp11.h>
#include <sqlpp11/transaction.h>
#include "make_test_connection.h"
namespace
{
std::ostream& operator<<(std::ostream& stream, const sqlpp::isolation_level& level)
{
switch (level)
{
case sqlpp::isolation_level::serializable:
{
stream << "SERIALIZABLE";
break;
}
case sqlpp::isolation_level::repeatable_read:
{
stream << "REPEATABLE READ";
break;
}
case sqlpp::isolation_level::read_committed:
{
stream << "READ COMMITTED";
break;
}
case sqlpp::isolation_level::read_uncommitted:
{
stream << "READ UNCOMMITTED";
break;
}
case sqlpp::isolation_level::undefined:
{
stream << "BEGIN";
break;
}
}
return stream;
}
template <typename L, typename R>
void require_equal(int line, const L& l, const R& r)
{
if (l != r)
{
std::cerr << line << ": " << l << " != " << r << std::endl;
throw std::runtime_error("Unexpected result");
}
}
}
namespace sql = sqlpp::postgresql;
SQLPP_ALIAS_PROVIDER(level);
int Transaction(int, char*[])
{
sql::connection db = sql::make_test_connection();
try
{
{
auto current_level = db(custom_query(sqlpp::verbatim("show transaction_isolation;"))
.with_result_type_of(select(sqlpp::value("").as(level))))
.front()
.level;
require_equal(__LINE__, current_level, "read committed");
std::cerr << "isolation level outside transaction: " << current_level << "\n";
auto tx = start_transaction(db, sqlpp::isolation_level::serializable);
current_level = db(custom_query(sqlpp::verbatim("show transaction_isolation;"))
.with_result_type_of(select(sqlpp::value("").as(level))))
.front()
.level;
require_equal(__LINE__, current_level, "serializable");
std::cerr << "isolation level in transaction(serializable) : " << current_level << "\n";
tx.commit();
}
require_equal(__LINE__, db.get_default_isolation_level(), sqlpp::isolation_level::read_committed);
db.set_default_isolation_level(sqlpp::isolation_level::serializable);
require_equal(__LINE__, db.get_default_isolation_level(), sqlpp::isolation_level::serializable);
}
catch (const sqlpp::exception& ex)
{
std::cerr << "Got exception: " << ex.what() << std::endl;
return 1;
}
catch (...)
{
std::cerr << "Got unknown exception" << std::endl;
return 1;
}
return 0;
}