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sqlpp11/tests/SelectTest.cpp
Roland Bock 161da75723 Stripped a lot of superfluouos type information from result rows. 
Moved member template into name class to utilize the fact the class
aliases are really just aliases.
This makes the code leaner in many cases and less complex for the compiler
(I guess). It also has the benefit, that the field name is available as
string in the result_rows. This might be useful for debugging one day.
2013-09-13 09:18:15 +02:00

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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 <sqlpp11/select.h>
#include <iostream>
class DbMock
{
public:
const std::string& escape(const std::string& text) { return text; }
};
DbMock db;
int main()
{
TabSample t;
TabFoo f;
// Test a table
{
using T = decltype(t);
static_assert(not sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(sqlpp::is_table_t<T>::value, "type requirement");
}
// Test an alias of table
{
using T = decltype(t.as(sqlpp::alias::a));
static_assert(not sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a colum of an alias of table
{
using T = decltype(t.as(sqlpp::alias::a).alpha);
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a numeric table column
{
using T = decltype(t.alpha);
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a an alias of a numeric table column
{
using T = decltype(t.alpha.as(sqlpp::alias::a));
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a select of a single column without a from
{
using T = decltype(select(t.alpha)); // Hint: The current rule is pretty crude (a from is required), but certainly better than nothing
static_assert(not sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a select of a single numeric table column
{
using T = decltype(select(t.alpha).from(t));
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test a select of an alias of a single numeric table column
{
using T = decltype(select(t.alpha.as(sqlpp::alias::a)).from(t));
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test an alias of a select of a single numeric table column
{
using T = decltype(select(t.alpha).from(t).as(sqlpp::alias::b));
static_assert(not sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "red to not be boolean");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(sqlpp::is_table_t<T>::value, "type requirement");
}
// Test the column of an alias of a select of an alias of a single numeric table column
{
using T = decltype(select(t.alpha.as(sqlpp::alias::a)).from(t).as(sqlpp::alias::b));
static_assert(not sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(not sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(sqlpp::is_table_t<T>::value, "type requirement");
}
// Test the column of an alias of a select of a single numeric table column
{
using T = decltype(select(t.alpha).from(t).as(sqlpp::alias::b).alpha);
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test an alias of a select of an alias of a single numeric table column
{
using T = decltype(select(t.alpha.as(sqlpp::alias::a)).from(t).as(sqlpp::alias::b).a);
static_assert(sqlpp::is_numeric_t<T>::value, "type requirement");
static_assert(sqlpp::is_expression_t<T>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<T>::value, "type requirement");
static_assert(not sqlpp::require_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_insert_t<T>::value, "type requirement");
static_assert(not sqlpp::must_not_update_t<T>::value, "type requirement");
static_assert(not sqlpp::is_boolean_t<T>::value, "type requirement");
static_assert(not sqlpp::is_text_t<T>::value, "type requirement");
static_assert(not sqlpp::is_alias_t<T>::value, "type requirement");
static_assert(not sqlpp::is_table_t<T>::value, "type requirement");
}
// Test that select(all_of(tab)) is expanded in select
{
auto a = select(all_of(t));
auto b = select(t.alpha, t.beta, t.gamma);
auto c = select(t);
static_assert(std::is_same<decltype(a), decltype(b)>::value, "all_of(t) has to be expanded by select()");
static_assert(std::is_same<decltype(b), decltype(c)>::value, "t has to be expanded by select()");
}
// Test that select(all_of(tab)) is expanded in multi_column
{
auto a = multi_column(sqlpp::alias::a, all_of(t));
auto b = multi_column(sqlpp::alias::a, t.alpha, t.beta, t.gamma);
static_assert(std::is_same<decltype(a), decltype(b)>::value, "all_of(t) has to be expanded by multi_column");
}
// Test that select(tab) is expanded in multi_column
{
auto a = multi_column(sqlpp::alias::a, t);
auto b = multi_column(sqlpp::alias::a, t.alpha, t.beta, t.gamma);
static_assert(std::is_same<decltype(a), decltype(b)>::value, "t has to be expanded by multi_column");
}
// Test that a multicolumn is not a value
{
auto m = multi_column(sqlpp::alias::a, t.alpha, t.beta);
auto a = select(m).from(t).as(sqlpp::alias::b).a;
static_assert(not sqlpp::is_value_t<decltype(a)>::value, "a multi_column is not a value");
}
// Test that result sets with identical name/value combinations have identical types
{
auto a = select(t.alpha);
auto b = select(f.omega.as(t.alpha));
using A = typename decltype(a)::_result_row_t;
using B = typename decltype(b)::_result_row_t;
static_assert(std::is_same<
decltype(t.alpha)::_value_type::_base_value_type,
decltype(f.omega)::_value_type::_base_value_type>::value, "Two bigint columns must have identical base_value_type");
static_assert(std::is_same<A, B>::value, "select with identical columns(name/value_type) need to have identical result_types");
}
static_assert(sqlpp::is_select_flag_t<decltype(sqlpp::all)>::value, "sqlpp::all has to be a select_flag");
using T = sqlpp::detail::wrap_operand<int>::type;
static_assert(T::_is_expression, "T has to be an expression");
static_assert(std::is_same<typename T::_value_type::_is_numeric, sqlpp::detail::tag>::value, "T has to be a numeric");
static_assert(sqlpp::is_numeric_t<T>::value, "T has to be a numeric");
static_assert(sqlpp::is_numeric_t<decltype(t.alpha)>::value, "TabSample.alpha has to be a numeric");
((t.alpha + 7) + 4).asc();
static_assert(sqlpp::is_boolean_t<decltype(t.gamma == t.gamma)>::value, "Comparison expression have to be boolean");
auto x = (t.gamma == true) and (t.alpha == 7);
auto y = t.gamma and true and t.gamma;
!t.gamma;
t.beta < "kaesekuchen";
(t.beta + "hallenhalma").serialize(std::cerr, db);
static_assert(sqlpp::must_not_insert_t<decltype(t.alpha)>::value, "alpha must not be inserted");
t.alpha.serialize(std::cerr, db);
std::cerr << "\n" << sizeof(TabSample) << std::endl;
static_assert(std::is_same<typename decltype(t.alpha)::_value_type::_is_named_expression, sqlpp::detail::tag>::value, "alpha should be a named expression");
static_assert(sqlpp::is_named_expression_t<decltype(t.alpha)>::value, "alpha should be a named expression");
static_assert(sqlpp::is_named_expression_t<decltype(t.alpha.as(sqlpp::alias::a))>::value, "an alias of alpha should be a named expression");
static_assert(sqlpp::is_alias_t<decltype(t.alpha.as(sqlpp::alias::a))>::value, "an alias of alpha should be an alias");
auto z = select(t.alpha) == 7;
auto l = t.as(sqlpp::alias::left);
auto r = select(t.gamma.as(sqlpp::alias::a)).from(t).where(t.gamma == true).as(sqlpp::alias::right);
static_assert(sqlpp::is_boolean_t<decltype(select(t.gamma).from(t))>::value, "select(bool) has to be a bool");
select(sqlpp::distinct, sqlpp::straight_join, l.alpha, l.beta, select(r.a).from(r))
.from(l, r)
.where(t.beta == "hello world" and select(t.gamma).from(t))// .as(sqlpp::alias::right))
.group_by(l.gamma, r.a)
.having(r.a != true)
.order_by(l.beta.asc())
.limit(17)
.offset(3)
.as(sqlpp::alias::a)
.serialize(std::cerr, db);
return 0;
}
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