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Added extra_tables to recursive_traits

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This commit is contained in:
rbock 2014-05-16 09:33:48 +02:00
parent 5f4a88c7ce
commit 6972758931
6 changed files with 29 additions and 2 deletions
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2
include/sqlpp11/column.h
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@ -48,8 +48,10 @@ namespace sqlpp
using _traits = make_traits<typename ColumnSpec::_value_type, tag::column, tag::expression, tag::named_expression>;
struct _recursive_traits
{
using _parameters = std::tuple<>;
using _provided_tables = detail::type_set<>;
using _required_tables = detail::type_set<Table>;
using _extra_tables = detail::type_set<>;
};
using _spec_t = ColumnSpec;

8
include/sqlpp11/parameter.h
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@ -37,7 +37,13 @@ namespace sqlpp
struct parameter_t: public ValueType::template expression_operators<parameter_t<ValueType, NameType>>
{
using _traits = make_traits<ValueType, tag::parameter, tag::expression>;
using _recursive_traits = make_recursive_traits<>;
struct _recursive_traits
{
using _parameters = std::tuple<parameter_t>;
using _provided_tables = detail::type_set<>;
using _required_tables = detail::type_set<>;
using _extra_tables = detail::type_set<>;
};
using _instance_t = typename NameType::_name_t::template _member_t<typename ValueType::_parameter_t>;

2
include/sqlpp11/select.h
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@ -112,7 +112,7 @@ namespace sqlpp
static_assert(is_noop_t<ColumnList>::value or sqlpp::is_select_column_list_t<ColumnList>::value, "column list of select is neither naught nor a valid column list");
static_assert(is_noop_t<From>::value or sqlpp::is_from_t<From>::value, "from() part of select is neither naught nor a valid from()");
using _known_tables = detail::make_joined_set_t<provided_tables_of<_from_t>, provided_tables_of<_extra_tables_t>>; // FIXME, use provided_tables_of<THIS>;
using _known_tables = detail::make_joined_set_t<provided_tables_of<_from_t>, extra_tables_of<_extra_tables_t>>;
template<typename Expression>
using _no_unknown_tables = detail::is_subset_of<required_tables_of<Expression>, _known_tables>;

1
include/sqlpp11/table.h
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@ -49,6 +49,7 @@ namespace sqlpp
using _parameters = std::tuple<>;
using _required_tables = detail::type_set<>;
using _provided_tables = detail::type_set<Table>;
using _extra_tables = detail::type_set<>;
};
static_assert(sizeof...(ColumnSpec), "at least one column required per table");

10
include/sqlpp11/type_traits.h
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@ -162,6 +162,12 @@ namespace sqlpp
{
using type = typename T::_recursive_traits::_provided_tables;
};
template<typename T>
struct extra_table_of_impl
{
using type = typename T::_recursive_traits::_extra_tables;
};
}
template<typename T>
using value_type_of = typename detail::value_type_of_impl<T>::type;
@ -172,6 +178,9 @@ namespace sqlpp
template<typename T>
using provided_tables_of = typename detail::provided_table_of_impl<T>::type;
template<typename T>
using extra_tables_of = typename detail::extra_table_of_impl<T>::type;
template<typename ValueType, typename... Tags>
struct make_traits
{
@ -183,6 +192,7 @@ namespace sqlpp
{
using _required_tables = detail::make_joined_set_t<required_tables_of<Arguments>...>;
using _provided_tables = detail::make_joined_set_t<provided_tables_of<Arguments>...>;
using _extra_tables = detail::make_joined_set_t<extra_tables_of<Arguments>...>;
};
}

8
include/sqlpp11/vendor/extra_tables.h vendored
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@ -40,6 +40,14 @@ namespace sqlpp
struct extra_tables_t
{
using _traits = make_traits<no_value_t, ::sqlpp::tag::extra_tables>;
struct _recursive_traits
{
using _parameters = std::tuple<>;
using _required_tables = ::sqlpp::detail::type_set<>;
using _provided_tables = ::sqlpp::detail::type_set<>;
using _extra_tables = ::sqlpp::detail::type_set<Tables...>;
};
using _recursive_traits = make_recursive_traits<Tables...>;
// FIXME: extra_tables must not require tables!