diff options
Diffstat (limited to 'src/database/update_query.hpp')
| -rw-r--r-- | src/database/update_query.hpp | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/src/database/update_query.hpp b/src/database/update_query.hpp index a29ac3f..0ee2bd9 100644 --- a/src/database/update_query.hpp +++ b/src/database/update_query.hpp @@ -39,27 +39,25 @@ struct UpdateQuery: public Query } template <int N=0, typename... T> - typename std::enable_if<N < sizeof...(T), void>::type - insert_col_name_and_value(const std::tuple<T...>& columns) + void insert_col_name_and_value(const std::tuple<T...>& columns) { - using ColumnType = std::decay_t<decltype(std::get<N>(columns))>; - - if (!std::is_same<ColumnType, Id>::value) + if constexpr(N < sizeof...(T)) { - this->body += ColumnType::name + "=$"s + std::to_string(this->current_param); - this->current_param++; + using ColumnType = std::decay_t<decltype(std::get<N>(columns))>; - if (N < (sizeof...(T) - 1)) - this->body += ", "; - } + if (!std::is_same<ColumnType, Id>::value) + { + this->body += ColumnType::name + "=$"s + + std::to_string(this->current_param); + this->current_param++; - this->insert_col_name_and_value<N+1>(columns); - } - template <int N=0, typename... T> - typename std::enable_if<N == sizeof...(T), void>::type - insert_col_name_and_value(const std::tuple<T...>&) - {} + if (N < (sizeof...(T) - 1)) + this->body += ", "; + } + this->insert_col_name_and_value<N + 1>(columns); + } + } template <typename... T> void execute(DatabaseEngine& db, const std::tuple<T...>& columns) @@ -76,23 +74,20 @@ struct UpdateQuery: public Query } template <int N=0, typename... T> - typename std::enable_if<N < sizeof...(T), void>::type - bind_param(const std::tuple<T...>& columns, Statement& statement, int index=1) + void bind_param(const std::tuple<T...>& columns, Statement& statement, int index=1) { - auto&& column = std::get<N>(columns); - using ColumnType = std::decay_t<decltype(column)>; + if constexpr(N < sizeof...(T)) + { + auto&& column = std::get<N>(columns); + using ColumnType = std::decay_t<decltype(column)>; - if (!std::is_same<ColumnType, Id>::value) - actual_bind(statement, column.value, index++); + if (!std::is_same<ColumnType, Id>::value) + actual_bind(statement, column.value, index++); - this->bind_param<N+1>(columns, statement, index); + this->bind_param<N + 1>(columns, statement, index); + } } - template <int N=0, typename... T> - typename std::enable_if<N == sizeof...(T), void>::type - bind_param(const std::tuple<T...>&, Statement&, int) - {} - template <typename... T> void bind_id(const std::tuple<T...>& columns, Statement& statement) { |