mirror of
https://github.com/rbock/sqlpp11.git
synced 2024-11-16 12:51:13 +08:00
71 lines
2.5 KiB
C++
71 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/default_value.h>
|
|
#include <sqlpp11/null.h>
|
|
#include <sqlpp11/serialize.h>
|
|
#include <sqlpp11/simple_column.h>
|
|
|
|
namespace sqlpp
|
|
{
|
|
template <typename Lhs, typename Rhs>
|
|
struct assignment_t
|
|
{
|
|
using _traits = make_traits<no_value_t, tag::is_assignment>;
|
|
using _lhs_t = Lhs;
|
|
using _rhs_t = Rhs;
|
|
using _nodes = detail::type_vector<_lhs_t, _rhs_t>;
|
|
|
|
static_assert(can_be_null_t<_lhs_t>::value ? true
|
|
: not std::is_same<_rhs_t, null_t>::value,
|
|
"column must not be null");
|
|
|
|
assignment_t(_lhs_t lhs, _rhs_t rhs) : _lhs(lhs), _rhs(rhs)
|
|
{
|
|
}
|
|
|
|
assignment_t(const assignment_t&) = default;
|
|
assignment_t(assignment_t&&) = default;
|
|
assignment_t& operator=(const assignment_t&) = default;
|
|
assignment_t& operator=(assignment_t&&) = default;
|
|
~assignment_t() = default;
|
|
|
|
_lhs_t _lhs;
|
|
_rhs_t _rhs;
|
|
};
|
|
|
|
template <typename Context, typename Lhs, typename Rhs>
|
|
Context& serialize(const assignment_t<Lhs, Rhs>& t, Context& context)
|
|
{
|
|
serialize(simple_column(t._lhs), context);
|
|
context << "=";
|
|
serialize_operand(t._rhs, context);
|
|
return context;
|
|
}
|
|
} // namespace sqlpp
|