/* * Copyright (c) 2013 - 2016, Roland Bock * 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 "TabSample.h" #include #include #include #include #include #include #include #include #include #include #ifdef SQLPP_USE_SQLCIPHER #include #else #include #endif #include #include namespace sql = sqlpp::sqlite3; SQLPP_ALIAS_PROVIDER(pragma) int main() { sql::connection db({":memory:", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, "", true}); std::cerr << "--------------------------------------" << std::endl; auto current_level = db.get_default_isolation_level(); std::cout << "Expecting default isolation level = 1, is " << static_cast(current_level) << std::endl; assert(current_level == sqlpp::isolation_level::serializable); int pragmaValue = db(custom_query(sqlpp::verbatim("PRAGMA read_uncommitted")) .with_result_type_of(select(sqlpp::value(1).as(pragma)))) .front() .pragma; assert(pragmaValue == 0); std::cerr << "Expecting read_uncommitted = 0, is: " << pragmaValue << std::endl; db.set_default_isolation_level(sqlpp::isolation_level::read_uncommitted); auto tx = start_transaction(db); pragmaValue = db(custom_query(sqlpp::verbatim("PRAGMA read_uncommitted")) .with_result_type_of(select(sqlpp::value(1).as(pragma)))) .front() .pragma; std::cerr << "Now expecting read_uncommitted = 1, is: " << pragmaValue << std::endl; assert(pragmaValue == 1); current_level = db.get_default_isolation_level(); std::cout << "Now expecting default isolation level = 4, is " << static_cast(current_level) << std::endl; assert(current_level == sqlpp::isolation_level::read_uncommitted); tx.commit(); std::cerr << "--------------------------------------" << std::endl; return 0; }