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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
116 lines
4.0 KiB
C++
116 lines
4.0 KiB
C++
/*
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* Copyright (c) 2015-2016, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <iostream>
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#include "MockDb.h"
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#include "Sample.h"
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#include <sqlpp11/sqlpp11.h>
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namespace
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{
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constexpr auto t = test::TabBar{};
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template <typename T>
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struct wrap
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{
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};
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template <typename T>
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void print_type_on_error(std::true_type)
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{
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}
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template <typename T>
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void print_type_on_error(std::false_type)
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{
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wrap<T>::_print_me_;
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}
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template <typename Assert, typename Lhs, typename Rhs>
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void and_check(const Lhs& lhs, const Rhs& rhs)
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{
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using ReturnType = decltype(lhs and rhs);
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using ExpectedReturnType =
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sqlpp::logic::all_t<Assert::value xor std::is_same<ReturnType, sqlpp::bad_expression<sqlpp::boolean>>::value>;
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print_type_on_error<ReturnType>(ExpectedReturnType{});
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static_assert(ExpectedReturnType::value, "Unexpected return type");
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}
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template <typename Assert, typename Lhs, typename Rhs>
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void or_check(const Lhs& lhs, const Rhs& rhs)
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{
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using ReturnType = decltype(lhs or rhs);
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using ExpectedReturnType =
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sqlpp::logic::all_t<Assert::value xor std::is_same<ReturnType, sqlpp::bad_expression<sqlpp::boolean>>::value>;
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print_type_on_error<ReturnType>(ExpectedReturnType{});
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static_assert(ExpectedReturnType::value, "Unexpected return type");
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}
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template <typename Assert, typename Lhs>
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void not_check(const Lhs& lhs)
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{
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using ReturnType = decltype(not lhs);
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using ExpectedReturnType =
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sqlpp::logic::all_t<Assert::value xor std::is_same<ReturnType, sqlpp::bad_expression<sqlpp::boolean>>::value>;
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print_type_on_error<ReturnType>(ExpectedReturnType{});
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static_assert(ExpectedReturnType::value, "Unexpected return type");
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}
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template <typename Assert, typename Condition>
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void where_check(const Condition& condition)
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{
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using ReturnType = decltype(sqlpp::where(condition));
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using ExpectedReturnType =
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sqlpp::logic::all_t<Assert::value xor std::is_same<ReturnType, sqlpp::bad_statement>::value>;
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print_type_on_error<ReturnType>(ExpectedReturnType{});
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static_assert(ExpectedReturnType::value, "Unexpected return type");
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}
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void boolean()
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{
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and_check<sqlpp::consistent_t>(t.gamma, t.gamma);
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and_check<sqlpp::assert_valid_operands>(t.gamma, true);
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// and_check<sqlpp::assert_valid_operands>(true, t.gamma); // Cannot currently do that
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or_check<sqlpp::consistent_t>(t.gamma, t.gamma);
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or_check<sqlpp::assert_valid_operands>(t.gamma, true);
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// or_check<sqlpp::assert_valid_operands>(true, t.gamma); // Cannot currently do that
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not_check<sqlpp::consistent_t>(t.gamma);
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}
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void where()
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{
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where_check<sqlpp::consistent_t>(t.gamma);
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where_check<sqlpp::bad_statement>(true);
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}
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}
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int main(int, char* [])
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{
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boolean();
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where();
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}
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