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Added first draft of custom query

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rbock 2014-10-27 17:36:33 +01:00
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include/sqlpp11/custom_query.h Normal file
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/*
* Copyright (c) 2013-2014, 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.
*/
#ifndef SQLPP_CUSTOM_QUERY_H
#define SQLPP_CUSTOM_QUERY_H
#include <sqlpp11/connection.h>
namespace sqlpp
{
template<typename Database, typename FirstPart, typename... Parts>
struct custom_query_t:
public FirstPart::_result_type_provider::template _result_methods_t<custom_query_t>
{
custom_query_t(Expressions... expressions):
_expressions(expressions...)
{}
custom_query_t(const custom_query_t&) = default;
custom_query_t(custom_query_t&&) = default;
custom_query_t& operator=(const custom_query_t&) = default;
custom_query_t& operator=(custom_query_t&&) = default;
~custom_query_t() = default;
std::tuple<FirstPart, Parts...> _parts;
};
template<typename Context, typename Database, typename... Parts>
struct serializer_t<Context, custom_query_t<Database, Parts...>>
{
using T = custom_query_t<Database, Parts...>;
static Context& _(const T& t, Context& context)
{
interpret_tuple(t._parts, " ", context);
return context;
}
};
template<typename... Parts>
auto custom_query(Parts... parts)
-> statement_t<void, Parts...>
{
return statement_t<void, Parts>(parts...);
}
template<typename Database, typename... Parts>
auto dynamic_custom_query(const Database&, Parts...)
-> statement_t<Database, Parts...>
{
static_assert(std::is_base_of<connection, Database>::value, "Invalid database parameter");
return { };
}
}
#endif