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74cafe35dd
Before this, there could be multiple classes representing multiple id columns. Now there is one class representing ALL the name "id". Very important for analyzing potential name clashes.
101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
/*
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* Copyright (c) 2013-2014, 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_NOOP_H
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#define SQLPP_NOOP_H
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#include <type_traits>
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#include <sqlpp11/no_value.h>
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#include <sqlpp11/serializer.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 _recursive_traits = make_recursive_traits<>;
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struct _alias_t {};
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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 -> void
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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 -> void
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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
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-> 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
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-> 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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struct serializer_t<Context, noop>
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{
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using _serialize_check = consistent_t;
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using T = noop;
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static Context& _(const T& t, Context& context)
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{
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return context;
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}
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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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#endif
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