module sqlite import orm import time // sql expr pub fn (db DB) @select(config orm.SelectConfig, data orm.QueryData, where orm.QueryData) ?[][]orm.Primitive { // 1. Create query and bind necessary data query := orm.orm_select_gen(config, '`', true, '?', 1, where) stmt := db.new_init_stmt(query)? mut c := 1 sqlite_stmt_binder(stmt, where, query, mut c)? sqlite_stmt_binder(stmt, data, query, mut c)? defer { stmt.finalize() } mut ret := [][]orm.Primitive{} if config.is_count { // 2. Get count of returned values & add it to ret array step := stmt.step() if step !in [sqlite_row, sqlite_ok, sqlite_done] { return db.error_message(step, query) } count := stmt.sqlite_select_column(0, 8)? ret << [count] return ret } for { // 2. Parse returned values step := stmt.step() if step == sqlite_done { break } if step != sqlite_ok && step != sqlite_row { break } mut row := []orm.Primitive{} for i, typ in config.types { primitive := stmt.sqlite_select_column(i, typ)? row << primitive } ret << row } return ret } // sql stmt pub fn (db DB) insert(table string, data orm.QueryData) ? { query, converted_data := orm.orm_stmt_gen(table, '`', .insert, true, '?', 1, data, orm.QueryData{}) sqlite_stmt_worker(db, query, converted_data, orm.QueryData{})? } pub fn (db DB) update(table string, data orm.QueryData, where orm.QueryData) ? { query, _ := orm.orm_stmt_gen(table, '`', .update, true, '?', 1, data, where) sqlite_stmt_worker(db, query, data, where)? } pub fn (db DB) delete(table string, where orm.QueryData) ? { query, _ := orm.orm_stmt_gen(table, '`', .delete, true, '?', 1, orm.QueryData{}, where) sqlite_stmt_worker(db, query, orm.QueryData{}, where)? } pub fn (db DB) last_id() orm.Primitive { query := 'SELECT last_insert_rowid();' id := db.q_int(query) return orm.Primitive(id) } // table pub fn (db DB) create(table string, fields []orm.TableField) ? { query := orm.orm_table_gen(table, '`', true, 0, fields, sqlite_type_from_v, false) or { return err } sqlite_stmt_worker(db, query, orm.QueryData{}, orm.QueryData{})? } pub fn (db DB) drop(table string) ? { query := 'DROP TABLE `$table`;' sqlite_stmt_worker(db, query, orm.QueryData{}, orm.QueryData{})? } // helper // Executes query and bind prepared statement data directly fn sqlite_stmt_worker(db DB, query string, data orm.QueryData, where orm.QueryData) ? { stmt := db.new_init_stmt(query)? mut c := 1 sqlite_stmt_binder(stmt, data, query, mut c)? sqlite_stmt_binder(stmt, where, query, mut c)? stmt.orm_step(query)? stmt.finalize() } // Binds all values of d in the prepared statement fn sqlite_stmt_binder(stmt Stmt, d orm.QueryData, query string, mut c &int) ? { for data in d.data { err := bind(stmt, c, data) if err != 0 { return stmt.db.error_message(err, query) } c++ } } // Universal bind function fn bind(stmt Stmt, c &int, data orm.Primitive) int { mut err := 0 match data { i8, i16, int, u8, u16, u32, bool { err = stmt.bind_int(c, int(data)) } i64, u64 { err = stmt.bind_i64(c, i64(data)) } f32, f64 { err = stmt.bind_f64(c, unsafe { *(&f64(&data)) }) } string { err = stmt.bind_text(c, data) } time.Time { err = stmt.bind_int(c, int(data.unix)) } orm.InfixType { err = bind(stmt, c, data.right) } } return err } // Selects column in result and converts it to an orm.Primitive fn (stmt Stmt) sqlite_select_column(idx int, typ int) ?orm.Primitive { mut primitive := orm.Primitive(0) if typ in orm.nums || typ == -1 { primitive = stmt.get_int(idx) } else if typ in orm.num64 { primitive = stmt.get_i64(idx) } else if typ in orm.float { primitive = stmt.get_f64(idx) } else if typ == orm.string { primitive = stmt.get_text(idx).clone() } else if typ == orm.time { d := stmt.get_int(idx) primitive = time.unix(d) } else { return error('Unknown type $typ') } return primitive } // Convert type int to sql type string fn sqlite_type_from_v(typ int) ?string { return if typ in orm.nums || typ < 0 || typ in orm.num64 || typ == orm.time { 'INTEGER' } else if typ in orm.float { 'REAL' } else if typ == orm.string { 'TEXT' } else { error('Unknown type $typ') } }