diff options
Diffstat (limited to 'src/database/insert_query.hpp')
-rw-r--r-- | src/database/insert_query.hpp | 103 |
1 files changed, 54 insertions, 49 deletions
diff --git a/src/database/insert_query.hpp b/src/database/insert_query.hpp index 2ece69d..2fc0512 100644 --- a/src/database/insert_query.hpp +++ b/src/database/insert_query.hpp @@ -12,62 +12,63 @@ #include <sqlite3.h> -template <int N, typename ColumnType, typename... T> -typename std::enable_if<!std::is_same<std::decay_t<ColumnType>, Id>::value, void>::type -actual_bind(Statement& statement, std::vector<std::string>& params, const std::tuple<T...>&) +template <std::size_t N=0, typename... T> +typename std::enable_if<N < sizeof...(T), void>::type +update_autoincrement_id(std::tuple<T...>& columns, Statement& statement) { - const auto value = params.front(); - params.erase(params.begin()); - if (sqlite3_bind_text(statement.get(), N + 1, value.data(), static_cast<int>(value.size()), SQLITE_TRANSIENT) != SQLITE_OK) - log_error("Failed to bind ", value, " to param ", N); -} - -template <int N, typename ColumnType, typename... T> -typename std::enable_if<std::is_same<std::decay_t<ColumnType>, Id>::value, void>::type -actual_bind(Statement& statement, std::vector<std::string>&, const std::tuple<T...>& columns) -{ - auto&& column = std::get<Id>(columns); - if (column.value != 0) + using ColumnType = typename std::decay<decltype(std::get<N>(columns))>::type; + if (std::is_same<ColumnType, Id>::value) { - if (sqlite3_bind_int64(statement.get(), N + 1, static_cast<sqlite3_int64>(column.value)) != SQLITE_OK) - log_error("Failed to bind ", column.value, " to id."); + log_debug("EXTRACTING LAST ID"); + auto&& column = std::get<Id>(columns); } - else if (sqlite3_bind_null(statement.get(), N + 1) != SQLITE_OK) - log_error("Failed to bind NULL to param ", N); + update_autoincrement_id<N+1>(columns, statement); } +template <std::size_t N=0, typename... T> +typename std::enable_if<N == sizeof...(T), void>::type +update_autoincrement_id(std::tuple<T...>&, Statement& statement) +{} + struct InsertQuery: public Query { - InsertQuery(const std::string& name): - Query("INSERT OR REPLACE INTO ") + template <typename... T> + InsertQuery(const std::string& name, const std::tuple<T...>& columns): + Query("INSERT INTO ") { this->body += name; + this->insert_col_names(columns); + this->insert_values(columns); } template <typename... T> - void execute(const std::tuple<T...>& columns, sqlite3* db) + void execute(DatabaseEngine& db, std::tuple<T...>& columns) { - auto statement = this->prepare(db); - { - this->bind_param(columns, statement); - if (sqlite3_step(statement.get()) != SQLITE_DONE) - log_error("Failed to execute query: ", sqlite3_errmsg(db)); - } + auto statement = db.prepare(this->body); + this->bind_param(columns, *statement); + + if (statement->step() != StepResult::Error) + db.extract_last_insert_rowid(*statement); + else + log_error("Failed to extract the rowid from the last INSERT"); } template <int N=0, typename... T> typename std::enable_if<N < sizeof...(T), void>::type - bind_param(const std::tuple<T...>& columns, Statement& statement) + bind_param(const std::tuple<T...>& columns, Statement& statement, int index=1) { - using ColumnType = typename std::remove_reference<decltype(std::get<N>(columns))>::type; + 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++); - actual_bind<N, ColumnType>(statement, this->params, columns); - this->bind_param<N+1>(columns, statement); + 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&) + bind_param(const std::tuple<T...>&, Statement&, int) {} template <typename... T> @@ -80,18 +81,21 @@ struct InsertQuery: public Query template <int N=0, typename... T> typename std::enable_if<N < sizeof...(T), void>::type - insert_value(const std::tuple<T...>& columns) + insert_value(const std::tuple<T...>& columns, int index=1) { - this->body += "?"; - if (N != sizeof...(T) - 1) - this->body += ","; - this->body += " "; - add_param(*this, std::get<N>(columns)); - this->insert_value<N+1>(columns); + using ColumnType = std::decay_t<decltype(std::get<N>(columns))>; + + if (!std::is_same<ColumnType, Id>::value) + { + this->body += "$" + std::to_string(index++); + if (N != sizeof...(T) - 1) + this->body += ", "; + } + this->insert_value<N+1>(columns, index); } template <int N=0, typename... T> typename std::enable_if<N == sizeof...(T), void>::type - insert_value(const std::tuple<T...>&) + insert_value(const std::tuple<T...>&, const int) { } template <typename... T> @@ -99,27 +103,28 @@ struct InsertQuery: public Query { this->body += " ("; this->insert_col_name(columns); - this->body += ")\n"; + this->body += ")"; } template <int N=0, typename... T> typename std::enable_if<N < sizeof...(T), void>::type insert_col_name(const std::tuple<T...>& columns) { - using ColumnType = typename std::remove_reference<decltype(std::get<N>(columns))>::type; + using ColumnType = std::decay_t<decltype(std::get<N>(columns))>; - this->body += ColumnType::name; + if (!std::is_same<ColumnType, Id>::value) + { + this->body += ColumnType::name; - if (N < (sizeof...(T) - 1)) - this->body += ", "; + if (N < (sizeof...(T) - 1)) + this->body += ", "; + } this->insert_col_name<N+1>(columns); } + template <int N=0, typename... T> typename std::enable_if<N == sizeof...(T), void>::type insert_col_name(const std::tuple<T...>&) {} - - - private: }; |