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b41f1add8c
This allows to select NULL via a case statement (seems to make more sense than disallowing it).
66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
/*
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* Copyright (c) 2013-2015, Roland Bock
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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, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* 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
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SQLPP_PREPARED_SELECT_H
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#define SQLPP_PREPARED_SELECT_H
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#include <sqlpp11/parameter_list.h>
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#include <sqlpp11/result.h>
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#include <sqlpp11/data_types/no_value.h>
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namespace sqlpp
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{
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template <typename Database, typename Statement, typename Composite = Statement>
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struct prepared_select_t
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{
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using _traits = make_traits<no_value_t, tag::is_prepared_statement>;
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using _nodes = detail::type_vector<>;
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using _result_row_t = typename Statement::template _result_row_t<Database>;
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using _parameter_list_t = make_parameter_list_t<Composite>;
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using _dynamic_names_t = typename Statement::_dynamic_names_t;
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using _prepared_statement_t = typename Database::_prepared_statement_t;
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using _run_check = consistent_t;
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auto _run(Database& db) const -> result_t<decltype(db.run_prepared_select(*this)), _result_row_t>
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{
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return {db.run_prepared_select(*this), _dynamic_names};
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}
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void _bind_params() const
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{
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params._bind(_prepared_statement);
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}
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_parameter_list_t params;
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_dynamic_names_t _dynamic_names;
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mutable _prepared_statement_t _prepared_statement;
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};
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}
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#endif
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