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