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https://github.com/rbock/sqlpp11.git
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9b49afa306
* Document the connector API method is_transaction_active() * Move mysql::connection_base::is_transaction_active() to the other transaction-handling methods. * Add more tests for mysql::connection::is_transaction_active() * Add postgresql::connection_base::is_transaction_active() * Add tests for postgresql::connection_base::is_transaction_active() * Change the type of the SQLite3 transaction status from transaction_status_type to a boolean flag. * Add sqlite3::connection_base::is_transaction_active() * Add tests for sqlite3::connection_base::is_transaction_active() * When closing a transaction do it in the following order: report (if any), execute SQL command, set transaction active flag to false.
134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
/*
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* Copyright (c) 2017, Volker Aßmann
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <iostream>
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#include <memory>
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#include <stdexcept>
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#include <sqlpp11/alias_provider.h>
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#include <sqlpp11/custom_query.h>
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#include <sqlpp11/postgresql/connection.h>
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#include <sqlpp11/sqlpp11.h>
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#include <sqlpp11/transaction.h>
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#include "make_test_connection.h"
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namespace
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{
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std::ostream& operator<<(std::ostream& stream, const sqlpp::isolation_level& level)
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{
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switch (level)
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{
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case sqlpp::isolation_level::serializable:
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{
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stream << "SERIALIZABLE";
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break;
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}
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case sqlpp::isolation_level::repeatable_read:
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{
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stream << "REPEATABLE READ";
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break;
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}
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case sqlpp::isolation_level::read_committed:
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{
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stream << "READ COMMITTED";
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break;
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}
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case sqlpp::isolation_level::read_uncommitted:
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{
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stream << "READ UNCOMMITTED";
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break;
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}
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case sqlpp::isolation_level::undefined:
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{
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stream << "BEGIN";
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break;
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}
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}
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return stream;
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}
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template <typename L, typename R>
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void require_equal(int line, const L& l, const R& r)
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{
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if (l != r)
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{
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std::cerr << line << ": " << l << " != " << r << std::endl;
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throw std::runtime_error("Unexpected result");
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}
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}
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}
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namespace sql = sqlpp::postgresql;
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SQLPP_ALIAS_PROVIDER(level);
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int Transaction(int, char*[])
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{
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sql::connection db = sql::make_test_connection();
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try
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{
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{
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require_equal(__LINE__, db.is_transaction_active(), false);
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auto current_level = db(custom_query(sqlpp::verbatim("show transaction_isolation;"))
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.with_result_type_of(select(sqlpp::value("").as(level))))
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.front()
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.level;
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require_equal(__LINE__, current_level, "read committed");
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std::cerr << "isolation level outside transaction: " << current_level << "\n";
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auto tx = start_transaction(db, sqlpp::isolation_level::serializable);
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require_equal(__LINE__, db.is_transaction_active(), true);
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current_level = db(custom_query(sqlpp::verbatim("show transaction_isolation;"))
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.with_result_type_of(select(sqlpp::value("").as(level))))
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.front()
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.level;
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require_equal(__LINE__, current_level, "serializable");
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std::cerr << "isolation level in transaction(serializable) : " << current_level << "\n";
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tx.commit();
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require_equal(__LINE__, db.is_transaction_active(), false);
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}
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require_equal(__LINE__, db.get_default_isolation_level(), sqlpp::isolation_level::read_committed);
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db.set_default_isolation_level(sqlpp::isolation_level::serializable);
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require_equal(__LINE__, db.get_default_isolation_level(), sqlpp::isolation_level::serializable);
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}
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catch (const sqlpp::exception& ex)
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{
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std::cerr << "Got exception: " << ex.what() << std::endl;
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return 1;
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}
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catch (...)
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{
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std::cerr << "Got unknown exception" << std::endl;
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return 1;
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}
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return 0;
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}
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