mirror of
https://github.com/rbock/sqlpp11.git
synced 2024-11-16 12:51:13 +08:00
72 lines
2.5 KiB
C++
72 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/data_types/boolean.h>
|
|
#include <sqlpp11/char_sequence.h>
|
|
#include <sqlpp11/detail/type_set.h>
|
|
|
|
namespace sqlpp
|
|
{
|
|
template <typename Select>
|
|
struct any_t
|
|
{
|
|
using _traits = make_traits<value_type_of<Select>, tag::is_multi_expression>;
|
|
using _nodes = detail::type_vector<Select>;
|
|
|
|
any_t(Select select) : _select(select)
|
|
{
|
|
}
|
|
|
|
any_t(const any_t&) = default;
|
|
any_t(any_t&&) = default;
|
|
any_t& operator=(const any_t&) = default;
|
|
any_t& operator=(any_t&&) = default;
|
|
~any_t() = default;
|
|
|
|
Select _select;
|
|
};
|
|
|
|
template <typename Context, typename Select>
|
|
Context& serialize(const any_t<Select>& t, Context& context)
|
|
{
|
|
context << "ANY";
|
|
serialize_operand(t._select, context);
|
|
return context;
|
|
}
|
|
|
|
template <typename T>
|
|
auto any(T t) -> any_t<wrap_operand_t<T>>
|
|
{
|
|
static_assert(is_select_t<wrap_operand_t<T>>::value, "any() requires a select expression as argument");
|
|
static_assert(is_expression_t<wrap_operand_t<T>>::value,
|
|
"any() requires a single column select expression as argument");
|
|
// FIXME: can we accept non-values like NULL here?
|
|
return {t};
|
|
}
|
|
} // namespace sqlpp
|