mirror of
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113 lines
3.8 KiB
C++
113 lines
3.8 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 SQLPP_SELECT_H
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#define SQLPP_SELECT_H
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#include <sqlpp11/statement.h>
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#include <sqlpp11/noop.h>
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#include <sqlpp11/connection.h>
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#include <sqlpp11/with.h>
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#include <sqlpp11/select_flag_list.h>
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#include <sqlpp11/select_column_list.h>
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#include <sqlpp11/from.h>
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#include <sqlpp11/where.h>
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#include <sqlpp11/group_by.h>
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#include <sqlpp11/having.h>
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#include <sqlpp11/order_by.h>
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#include <sqlpp11/limit.h>
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#include <sqlpp11/offset.h>
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#include <sqlpp11/union.h>
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#include <sqlpp11/expression.h>
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#include <sqlpp11/wrong.h>
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namespace sqlpp
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{
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struct select_name_t
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{
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};
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struct select_t : public statement_name_t<select_name_t, tag::is_select>
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{
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};
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template <typename Context>
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struct serializer_t<Context, select_name_t>
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{
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using _serialize_check = consistent_t;
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using T = select_name_t;
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static Context& _(const T&, Context& context)
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{
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context << "SELECT ";
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return context;
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}
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};
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template <typename Database>
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using blank_select_t = statement_t<Database,
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no_with_t,
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select_t,
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no_select_flag_list_t,
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no_select_column_list_t,
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no_from_t,
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no_where_t<true>,
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no_group_by_t,
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no_having_t,
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no_order_by_t,
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no_limit_t,
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no_offset_t,
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no_union_t>;
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inline blank_select_t<void> select() // FIXME: These should be constexpr
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{
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return {};
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}
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template <typename... Columns>
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auto select(Columns... columns) -> decltype(blank_select_t<void>().columns(columns...))
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{
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return blank_select_t<void>().columns(columns...);
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}
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template <typename Database>
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blank_select_t<Database> dynamic_select(const Database&)
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{
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static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
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return {};
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}
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template <typename Database, typename... Columns>
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auto dynamic_select(const Database&, Columns... columns) -> decltype(blank_select_t<Database>().columns(columns...))
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{
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static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
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return blank_select_t<Database>().columns(columns...);
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}
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}
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#endif
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