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95 lines
2.8 KiB
C++
95 lines
2.8 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 SQLPP11_NOOP_H
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#define SQLPP11_NOOP_H
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#include <type_traits>
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#include <sqlpp11/data_types/no_value.h>
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#include <sqlpp11/prepared_execute.h>
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namespace sqlpp
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{
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struct noop
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{
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using _traits = make_traits<no_value_t, tag::is_noop>;
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using _nodes = detail::type_vector<>;
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struct _alias_t
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{
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};
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template <typename Statement>
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struct _result_methods_t
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{
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using _statement_t = Statement;
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const _statement_t& _get_statement() const
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{
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return static_cast<const _statement_t&>(*this);
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}
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// Execute
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template <typename Db, typename Composite>
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auto _run(Db& db, const Composite& composite) const -> size_t
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{
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return db.execute(composite);
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}
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template <typename Db>
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auto _run(Db& db) const -> size_t
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{
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return db.execute(_get_statement());
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}
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// Prepare
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template <typename Db, typename Composite>
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auto _prepare(Db& db, const Composite& composite) const -> prepared_execute_t<Db, Composite>
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{
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return {{}, db.prepare_execute(composite)};
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}
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template <typename Db>
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auto _prepare(Db& db) const -> prepared_execute_t<Db, _statement_t>
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{
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return {{}, db.prepare_execute(_get_statement())};
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}
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};
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};
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template <typename Context>
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Context& serialize(const noop&, Context& context)
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{
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return context;
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}
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template <typename T>
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struct is_noop : std::is_same<T, noop>
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{
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};
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} // namespace sqlpp
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#endif
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