func (f *Formatted) Scan(r *pgx.ValueReader) error {
if r.Len() == -1 {
return nil
}
*f = Formatted(r.ReadString(r.Len()))
return r.Err()
}
func (p *NullPoint) Scan(vr *pgx.ValueReader) error {
if vr.Type().DataTypeName != "point" {
return pgx.SerializationError(fmt.Sprintf("NullPoint.Scan cannot decode %s (OID %d)", vr.Type().DataTypeName, vr.Type().DataType))
}
if vr.Len() == -1 {
p.X, p.Y, p.Valid = 0, 0, false
return nil
}
switch vr.Type().FormatCode {
case pgx.TextFormatCode:
s := vr.ReadString(vr.Len())
match := pointRegexp.FindStringSubmatch(s)
if match == nil {
return pgx.SerializationError(fmt.Sprintf("Received invalid point: %v", s))
}
var err error
p.X, err = strconv.ParseFloat(match[1], 64)
if err != nil {
return pgx.SerializationError(fmt.Sprintf("Received invalid point: %v", s))
}
p.Y, err = strconv.ParseFloat(match[2], 64)
if err != nil {
return pgx.SerializationError(fmt.Sprintf("Received invalid point: %v", s))
}
case pgx.BinaryFormatCode:
return errors.New("binary format not implemented")
default:
return fmt.Errorf("unknown format %v", vr.Type().FormatCode)
}
p.Valid = true
return vr.Err()
}