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Can extract parameters from expression

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Roland Bock
2013-11-22 09:42:28 +01:00
parent 1aa67c6604
commit 8f99a03359
12 changed files with 136 additions and 6 deletions
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tests/PreparedTest.cpp 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.
*/
#include "TabSample.h"
#include "MockDb.h"
#include "is_regular.h"
#include <sqlpp11/functions.h>
#include <iostream>
DbMock db = {};
int main()
{
TabSample t;
TabFoo f;
// empty parameter lists
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(t.alpha)>::type;
static_assert(std::is_same<T, std::tuple<>>::value, "type requirement");
}
// single parameter
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(parameter(t.alpha))>::type;
static_assert(std::is_same<T, std::tuple<decltype(parameter(t.alpha))>>::value, "type requirement");
}
// single parameter
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(parameter(t.alpha))>::type;
static_assert(std::is_same<T, std::tuple<decltype(parameter(t.alpha))>>::value, "type requirement");
}
// single parameter in expression
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(t.alpha == parameter(t.alpha))>::type;
static_assert(std::is_same<T, std::tuple<decltype(parameter(t.alpha))>>::value, "type requirement");
}
// single parameter in larger expression
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(t.beta.like("%") and t.alpha == parameter(t.alpha) or t.gamma != false)>::type;
static_assert(std::is_same<T, std::tuple<decltype(parameter(t.alpha))>>::value, "type requirement");
}
// three parameters in expression
{
using T = typename sqlpp::detail::get_parameter_tuple<decltype(t.beta.like(parameter(t.beta)) and t.alpha == parameter(t.alpha) or t.gamma != parameter(t.gamma))>::type;
static_assert(std::tuple_size<T>::value == 3, "type requirement");
static_assert(std::is_same<T, std::tuple<decltype(parameter(t.beta)), decltype(parameter(t.alpha)),decltype(parameter(t.gamma))>>::value, "type requirement");
}
return 0;
}