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Added sqlpp::null and sql::default_value for insert and update

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rbock
2014-01-25 22:38:16 +01:00
parent f443564d62
commit f802300685
14 changed files with 309 additions and 80 deletions
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include/sqlpp11/default_value.h Normal file
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/*
* Copyright (c) 2013, 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_DEFAULT_VALUE_H
#define SQLPP_DEFAULT_VALUE_H
#include <sqlpp11/no_value.h>
namespace sqlpp
{
struct default_value_t
{
static constexpr bool _is_expression = true;
using _value_type = no_value_t;
static constexpr bool _is_trivial() { return false; }
};
namespace vendor
{
template<typename Context>
struct interpreter_t<Context, default_value_t>
{
using Operand = default_value_t;
static Context& _(const Operand& t, Context& context)
{
context << "DEFAULT";
return context;
}
};
}
constexpr default_value_t default_value = {};
}
#endif