/* * Copyright (c) 2013-2014, 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 "Sample.h" #include "MockDb.h" #include "is_regular.h" #include #include #include MockDb db = {}; int main() { test::TabFoo f; test::TabBar t; // empty parameter lists { using T = sqlpp::parameters_of; static_assert(std::is_same>::value, "type requirement"); } // single parameter { using T = sqlpp::parameters_of; static_assert(std::is_same>::value, "type requirement"); } // single parameter { using T = sqlpp::parameters_of; static_assert(std::is_same>::value, "type requirement"); } // single parameter in expression { using T = sqlpp::parameters_of; static_assert(std::is_same>::value, "type requirement"); } // single parameter in larger expression { using T = sqlpp::parameters_of; static_assert(std::is_same>::value, "type requirement"); } // three parameters in expression { using T = sqlpp::parameters_of; static_assert(std::tuple_size::value == 3, "type requirement"); static_assert(std::is_same>::value, "type requirement"); } // OK, fine, now create a named parameter list from an expression { using Exp = decltype(t.beta.like(parameter(t.beta)) and t.alpha == parameter(t.alpha) or t.gamma != parameter(t.gamma)); using T = sqlpp::make_parameter_list_t; T npl; static_assert(std::is_same::_parameter_t, decltype(npl.alpha)>::value, "type requirement"); static_assert(std::is_same::_parameter_t, decltype(npl.beta)>::value, "type requirement"); static_assert(std::is_same::_parameter_t, decltype(npl.gamma)>::value, "type requirement"); } // Wonderful, now take a look at the parameter list of a select { auto s = select(all_of(t)).from(t).where(t.beta.like(parameter(t.beta)) and t.alpha == parameter(t.alpha) or t.gamma != parameter(t.gamma)); auto p = db.prepare(s); p.params.alpha = 7; using S = decltype(s); using T = sqlpp::make_parameter_list_t; T npl; static_assert(std::is_same::_parameter_t, decltype(npl.alpha)>::value, "type requirement"); static_assert(std::is_same::_parameter_t, decltype(npl.beta)>::value, "type requirement"); static_assert(std::is_same::_parameter_t, decltype(npl.gamma)>::value, "type requirement"); npl.alpha = 7; auto x = npl; x = npl; std::cerr << x.alpha << std::endl; x = decltype(npl)(); std::cerr << x.alpha << std::endl; } return 0; }