mirror of
https://github.com/rbock/sqlpp11.git
synced 2024-12-27 00:16:59 +08:00
5e96551f83
- `.from(t1, t2)` produces an unconditional join if you forget to add a condition in the .where() sqlpp11 therefore now deprecates unconditional joins. - more often than not, writing something like `where(name == "doe")`, you meant to write `where(t.name == "doe")`. It is hard to find bugs when the former expression compiles because you happen to have a variable `name` in the current scope as well. sqlpp11 therefore now deprecates `.where(bool)` and disallows raw bool values boolean expression like `something and bool` wrap bools in sqlpp::value(), if you REALLY want a bool value here
91 lines
4.1 KiB
C++
91 lines
4.1 KiB
C++
/*
|
|
* 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 <iostream>
|
|
#include "Sample.h"
|
|
#include "MockDb.h"
|
|
#include <sqlpp11/sqlpp11.h>
|
|
|
|
static_assert(not sqlpp::enforce_null_result_treatment_t<MockDb>::value, "MockDb interprets NULL as trivial");
|
|
static_assert(sqlpp::enforce_null_result_treatment_t<EnforceDb>::value, "MockDb does not interpret NULL as trivial");
|
|
|
|
int Result(int, char* [])
|
|
{
|
|
MockDb db = {};
|
|
EnforceDb edb{};
|
|
|
|
const auto t = test::TabBar{};
|
|
|
|
static_assert(sqlpp::can_be_null_t<decltype(t.alpha)>::value, "t.alpha can be null");
|
|
static_assert(not sqlpp::null_is_trivial_value_t<decltype(t.alpha)>::value, "t.alpha does not say null_is_trivial");
|
|
|
|
// Using a non-enforcing db
|
|
for (const auto& row : db(select(all_of(t), t.beta.like("")).from(t).unconditionally()))
|
|
{
|
|
static_assert(sqlpp::can_be_null_t<decltype(row.alpha)>::value, "row.alpha can be null");
|
|
static_assert(sqlpp::null_is_trivial_value_t<decltype(row.alpha)>::value, "row.alpha interprets null_is_trivial");
|
|
static_assert(std::is_same<bool, decltype(row.alpha.is_null())>::value, "Yikes");
|
|
using T = sqlpp::wrap_operand_t<decltype(row.alpha)>;
|
|
static_assert(sqlpp::can_be_null_t<T>::value, "row.alpha can be null");
|
|
static_assert(sqlpp::is_result_field_t<T>::value, "result_fields are not wrapped");
|
|
|
|
bool x = (t.alpha == row.alpha)._rhs._is_null();
|
|
bool y = (t.alpha == row.alpha)._rhs._is_default();
|
|
std::cerr << x << std::endl;
|
|
std::cerr << y << std::endl;
|
|
|
|
for (const auto& sub : db(select(all_of(t)).from(t).where(t.alpha == row.alpha)))
|
|
{
|
|
std::cerr << sub.alpha << std::endl;
|
|
}
|
|
db(insert_into(t).set(t.beta = row.beta, t.gamma = false));
|
|
}
|
|
|
|
sqlpp::select((t.alpha + 1).as(t.alpha)).flags(sqlpp::all).from(t);
|
|
for (const auto& row : db(select(all_of(t)).from(t).unconditionally()))
|
|
{
|
|
static_assert(sqlpp::can_be_null_t<decltype(row.alpha)>::value, "row.alpha can be null");
|
|
static_assert(sqlpp::null_is_trivial_value_t<decltype(row.alpha)>::value, "row.alpha interprets null_is_trivial");
|
|
}
|
|
|
|
// Using a non-enforcing db
|
|
for (const auto& row : edb(select(all_of(t)).from(t).unconditionally()))
|
|
{
|
|
static_assert(sqlpp::can_be_null_t<decltype(row.alpha)>::value, "row.alpha can be null");
|
|
static_assert(not sqlpp::null_is_trivial_value_t<decltype(row.alpha)>::value,
|
|
"row.alpha interprets null_is_trivial");
|
|
}
|
|
|
|
sqlpp::select((t.alpha + 1).as(t.alpha)).flags(sqlpp::all).from(t);
|
|
for (const auto& row : edb(select(all_of(t)).from(t).unconditionally()))
|
|
{
|
|
static_assert(sqlpp::can_be_null_t<decltype(row.alpha)>::value, "row.alpha can be null");
|
|
static_assert(not sqlpp::null_is_trivial_value_t<decltype(row.alpha)>::value,
|
|
"row.alpha interprets null_is_trivial");
|
|
}
|
|
|
|
return 0;
|
|
}
|