ulib/3party/sqlpp11/include/sqlpp11/select_flags.h
tqcq 99c258107b
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feat/support_orm (#2)
Co-authored-by: tqcq <99722391+tqcq@users.noreply.github.com>
Reviewed-on: #2
2024-01-06 13:56:45 +00:00

79 lines
2.5 KiB
C++

#pragma once
/*
* Copyright (c) 2013-2015, 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.
*/
#include <sqlpp11/type_traits.h>
#include <sqlpp11/detail/type_set.h>
#include <sqlpp11/interpret_tuple.h>
#include <tuple>
namespace sqlpp
{
// standard select flags
struct all_t
{
using _traits = make_traits<no_value_t, tag::is_select_flag>;
using _nodes = detail::type_vector<>;
};
static constexpr all_t all = {};
template <typename Context>
Context& serialize(const all_t&, Context& context)
{
context << "ALL";
return context;
}
struct distinct_t
{
using _traits = make_traits<no_value_t, tag::is_select_flag>;
using _nodes = detail::type_vector<>;
};
static constexpr distinct_t distinct = {};
template <typename Context>
Context& serialize(const distinct_t&, Context& context)
{
context << "DISTINCT";
return context;
}
struct straight_join_t
{
using _traits = make_traits<no_value_t, tag::is_select_flag>;
using _nodes = detail::type_vector<>;
};
static constexpr straight_join_t straight_join = {};
template <typename Context>
Context& serialize(const straight_join_t&, Context& context)
{
context << "STRAIGHT_JOIN";
return context;
}
} // namespace sqlpp