package model_classes import ( "database/sql" "errors" . "git.andr3h3nriqu3s.com/andr3/fyp/logic/db_types" . "git.andr3h3nriqu3s.com/andr3/fyp/logic/utils" ) type ModelClass struct { Id string `json:"id"` ModelId string `json:"model_id" db:"model_id"` Name string `json:"name"` Status int `json:"status"` } func ListClasses(c *Context, model_id string) (cls []*ModelClass, err error) { return GetDbMultitple[ModelClass](c, "model_classes where model_id=$1", model_id) } func ModelHasDataPoints(db *sql.DB, model_id string) (result bool, err error) { result = false rows, err := db.Query("select mdp.id from model_data_point as mdp join model_classes as mc on mc.id = mdp.class_id where mc.model_id = $1 limit 1;", model_id) if err != nil { return } defer rows.Close() return rows.Next(), nil } var ClassAlreadyExists = errors.New("Class aready exists") func CreateClass(db *sql.DB, model_id string, order int, name string) (id string, err error) { id = "" rows, err := db.Query("select id from model_classes where model_id=$1 and name=$2;", model_id, name) if err != nil { return } defer rows.Close() if rows.Next() { return id, ClassAlreadyExists } rows, err = db.Query("insert into model_classes (model_id, name, class_order) values ($1, $2, $3) returning id;", model_id, name, order) if err != nil { return } defer rows.Close() if !rows.Next() { return id, errors.New("Insert did not return anything") } err = rows.Scan(&id) return } func GetNumberOfWrongDataPoints(db *sql.DB, model_id string) (number int, err error) { number = 0 rows, err := db.Query("select count(mdp.id) from model_data_point as mdp join model_classes as mc on mc.id = mdp.class_id where mc.model_id=$1 and mdp.status=-1;", model_id) if err != nil { return } defer rows.Close() // TODO not an error because if there is no result means that there is no need to count if !rows.Next() { return } err = rows.Scan(&number) return }