/* * 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. */ #ifndef SQLPP_DATABASE_BIND_RESULT_H #define SQLPP_DATABASE_BIND_RESULT_H #include namespace sqlpp { namespace database { /* * bind_result_t binds values of a sqlpp11 result row * to the results of a statement */ class bind_result_t { public: bind_result_t(); // default constructor for a result that will not yield a valid row bind_result_t(...); bind_result_t(const bind_result_t&) = delete; bind_result_t(bind_result_t&& rhs); bind_result_t& operator=(const bind_result_t&) = delete; bind_result_t& operator=(bind_result_t&&); ~bind_result_t(); bool operator==(const bind_result_t& rhs) const; template void next(ResultRow& result_row); // something similar to this: /* { if (!_handle) { result_row.invalidate(); return; } if (next_impl()) { if (not result_row) { result_row.validate(); } result_row._bind(*this); // bind result row values to results } else { if (result_row) result_row.invalidate(); } }; */ // These are called by the result row to bind individual result values void _bind_boolean_result(size_t index, signed char* value, bool* is_null); void _bind_integral_result(size_t index, int64_t* value, bool* is_null); void _bind_text_result(size_t index, const char** text, size_t* len); ... }; } } #endif