// Orders need to be joined to extract usefull info, therefore they have to be parsed by hand
func (d Datastore) parseOrders(model interface{}, id interface{}) error {
var rows *sqlx.Rows
var e error
query := "select o.id, o.user_id, o.place_id, o.start, o.end_time, p.name as place_name, u.username, u.firstname, u.lastname from orders o left join users u on u.id = o.user_id left join places p on p.id = o.place_id"
/* query := "select o.id, o.user_id, o.place_id, o.date + o.order_start as start, o.date + o.order_end as end, p.name as place_name, u.username, u.firstname, u.lastname from orders o left join users u on u.id = o.user_id left join places p on p.id = o.place_id"
*/if id != nil {
query += " where o.id = $1"
rows, e = d.Db.Queryx(query, id)
} else {
rows, e = d.Db.Queryx(query)
}
/*query = "SELECT * FROM orders o, users u, places p where u.id = o.user_id and p.id = o.place_id"*/
if e != nil {
log.Println(e)
}
for rows.Next() {
var id int64
var place_id, user_id sql.NullInt64
var username, firstname, lastname, place_name sql.NullString
var start, end pq.NullTime
if err := rows.Scan(&id, &user_id, &place_id, &start, &end, &place_name, &username, &firstname, &lastname); err != nil {
log.Println(err)
}
order := Order{Id: id, UserId: user_id.Int64, PlaceId: place_id.Int64, Start: start.Time, End: end.Time, PlaceName: place_name.String, Username: username.String, Firstname: firstname.String, Lastname: lastname.String}
if user_id.Valid == false || (lastname.String == "" && firstname.String == "") {
order.Title = fmt.Sprintf("%v", place_name.String)
} else {
order.Title = fmt.Sprintf("%v: %v, %v", place_name.String, lastname.String, firstname.String)
}
*model.(*[]Order) = append(*model.(*[]Order), order)
}
e = rows.Err()
return e
}
func flattenUuidRows(rows *sqlx.Rows) (uuids []string, err error) {
for rows.Next() {
var uuid string
err = rows.Scan(&uuid)
if err != nil {
return
}
uuids = append(uuids, uuid)
}
return
}
// QueryScan executes the query in builder and loads the resulting data into
// one or more destinations.
//
// Returns ErrNotFound if no value was found, and it was therefore not set.
func queryScalar(execer *Execer, destinations ...interface{}) error {
fullSQL, args, blob, err := cacheOrSQL(execer)
if err != nil {
return err
}
if blob != nil {
err = json.Unmarshal(blob, &destinations)
if err == nil {
return nil
}
// log it and fallthrough to let the query continue
logger.Warn("queryScalar.2: Could not unmarshal cache data. Continuing with query")
}
defer logExecutionTime(time.Now(), fullSQL, args)
// Run the query:
var rows *sqlx.Rows
if args == nil {
rows, err = execer.database.Queryx(fullSQL)
} else {
rows, err = execer.database.Queryx(fullSQL, args...)
}
if err != nil {
return logSQLError(err, "QueryScalar.load_value.query", fullSQL, args)
}
defer rows.Close()
if rows.Next() {
err = rows.Scan(destinations...)
if err != nil {
return logSQLError(err, "QueryScalar.load_value.scan", fullSQL, args)
}
setCache(execer, destinations, dtStruct)
return nil
}
if err := rows.Err(); err != nil {
return logSQLError(err, "QueryScalar.load_value.rows_err", fullSQL, args)
}
return dat.ErrNotFound
}
func mapEvents(r *sqlx.Rows) ([]event, error) {
events := make([]event, 0)
for r.Next() {
var temp string = ""
e := event{}
err := r.Scan(&e.ID, &temp, &e.Title, &e.Description, &e.Font)
if err != nil {
return nil, err
}
e.Date, err = stringToTime(temp)
events = append(events, e)
}
/*doesn't work
e := event{}
err := e.mapRow(r)
if err != nil {
return nil, err
}
events = append(events, e)
*/
return events, nil
}
// queryJSONBlob executes the query in builder and loads the resulting data
// into a blob. If a single item is to be returned, set single to true.
//
// Returns ErrNotFound if nothing was found
func queryJSONBlob(execer *Execer, single bool) ([]byte, error) {
fullSQL, args, blob, err := cacheOrSQL(execer)
if err != nil {
return nil, err
}
if blob != nil {
return blob, nil
}
defer logExecutionTime(time.Now(), fullSQL, args)
var rows *sqlx.Rows
// Run the query:
if args == nil {
rows, err = execer.database.Queryx(fullSQL)
} else {
rows, err = execer.database.Queryx(fullSQL, args...)
}
if err != nil {
return nil, logSQLError(err, "queryJSONStructs", fullSQL, args)
}
// TODO optimize this later, may be better to
var buf bytes.Buffer
i := 0
if single {
defer rows.Close()
for rows.Next() {
if i == 1 {
if dat.Strict {
logSQLError(errors.New("Multiple results returned"), "Expected single result", fullSQL, args)
logger.Fatal("Expected single result, got many")
} else {
break
}
}
i++
err = rows.Scan(&blob)
if err != nil {
return nil, err
}
buf.Write(blob)
}
} else {
defer rows.Close()
for rows.Next() {
if i == 0 {
buf.WriteRune('[')
} else {
buf.WriteRune(',')
}
i++
err = rows.Scan(&blob)
if err != nil {
return nil, err
}
buf.Write(blob)
}
if i > 0 {
buf.WriteRune(']')
}
}
if i == 0 {
return nil, sql.ErrNoRows
}
blob = buf.Bytes()
setCache(execer, blob, dtBytes)
return blob, nil
}
// QuerySlice executes the query in builder and loads the resulting data into a
// slice of primitive values
//
// Returns ErrNotFound if no value was found, and it was therefore not set.
func querySlice(execer *Execer, dest interface{}) error {
// Validate the dest and reflection values we need
// This must be a pointer to a slice
valueOfDest := reflect.ValueOf(dest)
kindOfDest := valueOfDest.Kind()
if kindOfDest != reflect.Ptr {
panic("invalid type passed to LoadValues. Need a pointer to a slice")
}
// This must a slice
valueOfDest = reflect.Indirect(valueOfDest)
kindOfDest = valueOfDest.Kind()
if kindOfDest != reflect.Slice {
panic("invalid type passed to LoadValues. Need a pointer to a slice")
}
recordType := valueOfDest.Type().Elem()
recordTypeIsPtr := recordType.Kind() == reflect.Ptr
if recordTypeIsPtr {
reflect.ValueOf(dest)
}
fullSQL, args, blob, err := cacheOrSQL(execer)
if err != nil {
return err
}
if blob != nil {
err = json.Unmarshal(blob, &dest)
if err == nil {
return nil
}
// log it and fallthrough to let the query continue
logger.Warn("querySlice.2: Could not unmarshal cache data. Continuing with query")
}
defer logExecutionTime(time.Now(), fullSQL, args)
var rows *sqlx.Rows
if args == nil {
rows, err = execer.database.Queryx(fullSQL)
} else {
rows, err = execer.database.Queryx(fullSQL, args...)
}
if err != nil {
return logSQLError(err, "querySlice.load_all_values.query", fullSQL, args)
}
sliceValue := valueOfDest
defer rows.Close()
for rows.Next() {
// Create a new value to store our row:
pointerToNewValue := reflect.New(recordType)
newValue := reflect.Indirect(pointerToNewValue)
err = rows.Scan(pointerToNewValue.Interface())
if err != nil {
return logSQLError(err, "querySlice.load_all_values.scan", fullSQL, args)
}
// Append our new value to the slice:
sliceValue = reflect.Append(sliceValue, newValue)
}
valueOfDest.Set(sliceValue)
if err := rows.Err(); err != nil {
return logSQLError(err, "querySlice.load_all_values.rows_err", fullSQL, args)
}
setCache(execer, dest, dtStruct)
return nil
}
func (r scanRower) scanRow(rows *sqlx.Rows) (Value, error) {
p := reflect.New(r.t).Interface()
e := rows.Scan(p)
return p, e
}