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Added prepare_check

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This commit is contained in:
rbock 2014-11-25 17:56:51 +01:00
parent 809d42e4a1
commit 7ba973d9af
2 changed files with 41 additions and 2 deletions
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30
include/sqlpp11/type_traits.h
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@ -257,7 +257,7 @@ namespace sqlpp
template<typename Context, typename... T> template<typename Context, typename... T>
using serialize_check_of = detail::get_first_if<is_inconsistent_t, consistent_t, typename serializer_t<Context, T>::_serialize_check...>; using serialize_check_of = detail::get_first_if<is_inconsistent_t, consistent_t, typename serializer_t<Context, T>::_serialize_check...>;
struct assert_statement_or_prepared_t struct assert_run_statement_or_prepared_t
{ {
using type = std::false_type; using type = std::false_type;
@ -268,10 +268,21 @@ namespace sqlpp
}; };
}; };
struct assert_prepare_statement_t
{
using type = std::false_type;
template<typename T = void>
static void _()
{
static_assert(wrong_t<T>::value, "connection cannot prepare something that is not a statement");
};
};
template<typename T, typename Enable = void> template<typename T, typename Enable = void>
struct run_check struct run_check
{ {
using type = assert_statement_or_prepared_t; using type = assert_run_statement_or_prepared_t;
}; };
template<typename T> template<typename T>
@ -283,6 +294,21 @@ namespace sqlpp
template<typename T> template<typename T>
using run_check_t = typename run_check<T>::type; using run_check_t = typename run_check<T>::type;
template<typename T, typename Enable = void>
struct prepare_check
{
using type = assert_prepare_statement_t;
};
template<typename T>
struct prepare_check<T, typename std::enable_if<is_statement_t<T>::value>::type>
{
using type = typename T::_prepare_check;
};
template<typename T>
using prepare_check_t = typename prepare_check<T>::type;
template<typename Context, typename T, typename Enable = void> template<typename Context, typename T, typename Enable = void>
struct serialize_check struct serialize_check

13
tests/MockDb.h
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@ -170,9 +170,22 @@ struct MockDbT: public sqlpp::connection
// Prepared statements start here // Prepared statements start here
using _prepared_statement_t = std::nullptr_t; using _prepared_statement_t = std::nullptr_t;
template<typename T>
auto prepare(const T& t, const std::true_type&) -> decltype(t._prepare(*this))
{
return t._prepare(*this);
}
template<typename T>
auto prepare(const T& t, const std::false_type&) -> decltype(t._prepare(*this));
template<typename T> template<typename T>
auto prepare(const T& t) -> decltype(t._prepare(*this)) auto prepare(const T& t) -> decltype(t._prepare(*this))
{ {
sqlpp::prepare_check_t<T>::_();
sqlpp::serialize_check_t<_serializer_context_t, T>::_();
using _ok = sqlpp::detail::all_t<sqlpp::run_check_t<T>::type::value,
sqlpp::serialize_check_t<_serializer_context_t, T>::type::value>;
return t._prepare(*this); return t._prepare(*this);
} }