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More function tests and a few corrections for names and return types

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This commit is contained in:
Roland Bock 2013-11-07 15:06:13 +01:00
parent 9d94f6770b
commit 813549690e
9 changed files with 231 additions and 48 deletions
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2
database_api/api.h
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@ -69,6 +69,8 @@ namespace sqlpp
static constexpr bool _supports_exists = true;
static constexpr bool _supports_like = true;
static constexpr bool _supports_in = true;
static constexpr bool _supports_is_null = true;
static constexpr bool _supports_is_not_null = true;
static constexpr bool _supports_max = true;
static constexpr bool _supports_min = true;
static constexpr bool _supports_not_in = true;

2
include/sqlpp11/any.h
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@ -42,7 +42,7 @@ namespace sqlpp
struct _value_type: public Select::_value_type::_base_value_type
{
using _is_named_expression = std::true_type;
using _is_nameless_expression = std::true_type; // must not be named
};
struct _name_t

12
include/sqlpp11/detail/basic_operators.h
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@ -31,6 +31,7 @@
#include <sqlpp11/alias.h>
#include <sqlpp11/sort_order.h>
#include <sqlpp11/in.h>
#include <sqlpp11/is_null.h>
namespace sqlpp
{
@ -64,12 +65,6 @@ namespace sqlpp
static constexpr const char* _name = ">";
};
struct is_null_
{
using _value_type = boolean;
static constexpr const char* _name = "IS NULL";
};
struct is_not_null_
{
using _value_type = boolean;
@ -116,12 +111,12 @@ namespace sqlpp
return { *static_cast<const Base*>(this), std::forward<T>(t) };
}
null_expression_t<Base, is_null_> is_null() const
is_null_t<true, boolean, Base> is_null() const
{
return { *static_cast<const Base*>(this) };
}
null_expression_t<Base, is_not_null_> is_not_null() const
is_null_t<false, boolean, Base> is_not_null() const
{
return { *static_cast<const Base*>(this) };
}
@ -152,6 +147,7 @@ namespace sqlpp
template<typename alias_provider>
expression_alias_t<Base, typename std::decay<alias_provider>::type> as(alias_provider&&)
{
static_assert(not is_nameless_expression_t<Base>::value, "expression cannot have a name, e.g. like any()");
return { *static_cast<const Base*>(this) };
}

33
include/sqlpp11/expression.h
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@ -175,39 +175,6 @@ namespace sqlpp
Lhs _lhs;
};
template<typename Lhs, typename O>
struct null_expression_t: public O::_value_type::template operators<null_expression_t<Lhs, O>>
{
using _value_type = typename O::_value_type;
null_expression_t(Lhs&& l):
_lhs(std::move(l))
{}
null_expression_t(const Lhs& l):
_lhs(l)
{}
null_expression_t(const null_expression_t&) = default;
null_expression_t(null_expression_t&&) = default;
null_expression_t& operator=(const null_expression_t&) = default;
null_expression_t& operator=(null_expression_t&&) = default;
~null_expression_t() = default;
template<typename Db>
void serialize(std::ostream& os, Db& db) const
{
os << "(";
_lhs.serialize(os, db);
os << " ";
os << O::_name;
os << ")";
}
private:
Lhs _lhs;
};
template<typename Lhs, typename O, typename Rhs>
struct binary_expression_t: public O::_value_type::template operators<binary_expression_t<Lhs, O, Rhs>>
{

2
include/sqlpp11/in.h
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@ -77,7 +77,7 @@ namespace sqlpp
void serialize(std::ostream& os, Db& db) const
{
static_assert(NotInverted and Db::_supports_in
or _inverted and Db::_supports_not_in, "in() not supported by current database");
or _inverted and Db::_supports_not_in, "in() and/or not_in() not supported by current database");
_operand.serialize(os, db);
os << (_inverted ? " NOT IN(" : " IN(");
detail::serialize_tuple(os, db, _args, ',');

88
include/sqlpp11/is_null.h Normal file
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@ -0,0 +1,88 @@
/*
* 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_IS_NULL_H
#define SQLPP_IS_NULL_H
#include <sstream>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/detail/set.h>
namespace sqlpp
{
namespace detail
{
// The ValueType should be boolean, this is a hack because boolean is not fully defined when the compiler first gets here...
template<bool NotInverted, typename ValueType, typename Operand>
struct is_null_t: public ValueType::_base_value_type::template operators<is_null_t<NotInverted, ValueType, Operand>>
{
static constexpr bool _inverted = not NotInverted;
struct _value_type: public ValueType::_base_value_type // we requite fully defined boolean here
{
using _is_named_expression = std::true_type;
};
struct _name_t
{
static constexpr const char* _get_name() { return _inverted ? "IS NOT NULL" : "IS NULL"; }
template<typename T>
struct _member_t
{
T in;
};
};
is_null_t(const Operand& operand):
_operand(operand)
{}
is_null_t(Operand&& operand):
_operand(std::move(operand))
{}
is_null_t(const is_null_t&) = default;
is_null_t(is_null_t&&) = default;
is_null_t& operator=(const is_null_t&) = default;
is_null_t& operator=(is_null_t&&) = default;
~is_null_t() = default;
template<typename Db>
void serialize(std::ostream& os, Db& db) const
{
static_assert(NotInverted and Db::_supports_is_null
or _inverted and Db::_supports_is_not_null, "is_null() and/or is_not_null() not supported by current database");
_operand.serialize(os, db);
os << (_inverted ? " IS NOT NULL" : " IS NULL");
}
private:
Operand _operand;
};
}
}
#endif

2
include/sqlpp11/some.h
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@ -42,7 +42,7 @@ namespace sqlpp
struct _value_type: public Select::_value_type::_base_value_type
{
using _is_named_expression = std::true_type;
using _is_nameless_expression = std::true_type; // must not be named
};
struct _name_t

1
include/sqlpp11/type_traits.h
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@ -84,6 +84,7 @@ namespace sqlpp
SQLPP_IS_VALUE_TRAIT_GENERATOR(value);
SQLPP_IS_VALUE_TRAIT_GENERATOR(expression);
SQLPP_IS_VALUE_TRAIT_GENERATOR(named_expression);
SQLPP_IS_VALUE_TRAIT_GENERATOR(nameless_expression);
SQLPP_IS_VALUE_TRAIT_GENERATOR(alias); // FIXME: Is this really part of the value?
SQLPP_IS_VALUE_TRAIT_GENERATOR(select_flag);

137
tests/FunctionTest.cpp
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@ -46,12 +46,15 @@ int main()
using TI = decltype(t.alpha.in(1, 2, 3));
using TF = decltype(f.omega.in(1.0, 2.0, 3.0));
using TT = decltype(t.beta.in("a", "b", "c"));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
@ -62,12 +65,15 @@ int main()
using TI = decltype(t.alpha.not_in(1, 2, 3));
using TF = decltype(f.omega.not_in(1.0, 2.0, 3.0));
using TT = decltype(t.beta.not_in("a", "b", "c"));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
@ -76,6 +82,45 @@ int main()
// Test like
{
using TT = decltype(t.beta.like("%c%"));
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
}
// Test is_null
{
using TI = decltype(t.alpha.is_null());
using TF = decltype(f.omega.is_null());
using TT = decltype(t.beta.is_null());
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
}
// Test is_not_null
{
using TI = decltype(t.alpha.is_not_null());
using TF = decltype(f.omega.is_not_null());
using TT = decltype(t.beta.is_not_null());
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
@ -88,9 +133,11 @@ int main()
{
using TI = decltype(exists(select(t.alpha).from(t)));
using TT = decltype(exists(select(t.beta).from(t)));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TT>::value, "type requirement");
@ -101,12 +148,18 @@ int main()
using TI = decltype(any(select(t.alpha).from(t)));
using TT = decltype(any(select(t.beta).from(t)));
using TF = decltype(any(select(f.omega).from(t)));
static_assert(not sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "tFpe requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TT>::value, "type requirement");
@ -118,13 +171,19 @@ int main()
using TI = decltype(some(select(t.alpha).from(t)));
using TT = decltype(some(select(t.beta).from(t)));
using TF = decltype(some(select(f.omega).from(t)));
static_assert(not sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_text_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_nameless_expression_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
@ -137,9 +196,11 @@ int main()
{
using TI = decltype(avg(t.alpha));
using TF = decltype(avg(f.omega));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TF>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
@ -150,52 +211,120 @@ int main()
using TI = decltype(count(t.alpha));
using TT = decltype(count(t.beta));
using TF = decltype(count(f.omega));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TT>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TT>::value, "type requirement");
}
// Test max
{
using TI = decltype(max(t.alpha));
using TF = decltype(max(f.omega));
using TT = decltype(max(t.beta));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TF>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
}
// Test min
{
using TI = decltype(min(t.alpha));
using TF = decltype(min(f.omega));
using TT = decltype(min(t.beta));
static_assert(sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TF>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(not sqlpp::is_numeric_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
}
// Test sum
{
using TI = decltype(sum(t.alpha));
using TF = decltype(sum(f.omega));
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TI>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_floating_point_t<TI>::value, "type requirement");
static_assert(sqlpp::is_named_expression_t<TF>::value, "type requirement");
static_assert(sqlpp::is_numeric_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_integral_t<TF>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
}
// MISC FUNCTIONS
// --------------
// test value
{
using TB = decltype(sqlpp::value(true));
using TI = decltype(sqlpp::value(7));
using TF = decltype(sqlpp::value(1.5));
using TT = decltype(sqlpp::value("cheesecake"));
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TB>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
}
// test flatten
{
using TB = decltype(flatten(t.gamma, db));
using TI = decltype(flatten(t.alpha, db));
using TF = decltype(flatten(f.omega, db));
using TT = decltype(flatten(t.beta, db));
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TB>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
}
// test verbatim
{
using TB = decltype(sqlpp::verbatim<sqlpp::boolean>("1"));
using TI = decltype(sqlpp::verbatim<sqlpp::bigint>("42"));
using TF = decltype(sqlpp::verbatim<sqlpp::floating_point>("1.5"));
using TT = decltype(sqlpp::verbatim<sqlpp::text>("cheesecake"));
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_boolean_t<TB>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TB>::value, "type requirement");
static_assert(sqlpp::is_integral_t<TI>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TI>::value, "type requirement");
static_assert(sqlpp::is_floating_point_t<TF>::value, "type requirement");
static_assert(not sqlpp::is_named_expression_t<TT>::value, "type requirement");
static_assert(sqlpp::is_text_t<TT>::value, "type requirement");
}
return 0;
}