Mercurial > gemma
view pkg/models/common.go @ 3678:8f58851927c0
client: make layer factory only return new layer config for individual maps
instead of each time it is invoked. The purpose of the factory was to support multiple maps with individual layers.
But returning a new config each time it is invoked leads to bugs that rely on the layer's state. Now this factory
reuses the same objects it created before, per map.
author | Markus Kottlaender <markus@intevation.de> |
---|---|
date | Mon, 17 Jun 2019 17:31:35 +0200 |
parents | 97bba8b51b9c |
children | 8080007d3c06 |
line wrap: on
line source
// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package models import ( "database/sql/driver" "encoding/json" "errors" "fmt" "strings" "time" "gemma.intevation.de/gemma/pkg/common" ) var ( errNoString = errors.New("Not a string") errNoByteSlice = errors.New("Not a byte slice") ) // WGS84 is the EPSG of the World Geodetic System 1984. const WGS84 = 4326 type ( Date struct{ time.Time } Time struct{ time.Time } // Country is a valid country 2 letter code. Country string // UniqueCountries is a list of unique countries. UniqueCountries []Country ) func (d Date) MarshalJSON() ([]byte, error) { return json.Marshal(d.Format(common.DateFormat)) } func (d *Date) UnmarshalJSON(data []byte) error { var s string if err := json.Unmarshal(data, &s); err != nil { return err } d2, err := time.Parse(common.DateFormat, s) if err == nil { *d = Date{d2} } return err } func (t Time) MarshalJSON() ([]byte, error) { return json.Marshal(t.Format(common.TimeFormat)) } func (t *Time) UnmarshalJSON(data []byte) error { var s string if err := json.Unmarshal(data, &s); err != nil { return err } t2, err := time.Parse(common.TimeFormat, s) if err == nil { *t = Time{t2} } return err } var ( validCountries = []string{ "AT", "BG", "DE", "HU", "HR", "MD", "RO", "RS", "SK", "UA", } ) // UnmarshalJSON ensures that the given string forms a valid // two letter country code. func (c *Country) UnmarshalJSON(data []byte) error { var s string if err := json.Unmarshal(data, &s); err != nil { return err } u := strings.ToUpper(s) for _, v := range validCountries { if v == u { *c = Country(v) return nil } } return fmt.Errorf("'%s' is not a valid country", s) } // Value implements the driver.Valuer interface. func (c Country) Value() (driver.Value, error) { return string(c), nil } // Scan implements the sql.Scanner interfaces. func (c *Country) Scan(src interface{}) (err error) { if s, ok := src.(string); ok { *c = Country(s) } else { err = errNoString } return } func (uc *UniqueCountries) UnmarshalJSON(data []byte) error { var countries []Country if err := json.Unmarshal(data, &countries); err != nil { return err } unique := map[Country]struct{}{} for _, c := range countries { if _, found := unique[c]; found { return fmt.Errorf("country '%s' is not unique", string(c)) } unique[c] = struct{}{} } *uc = countries return nil } func (uc UniqueCountries) String() string { var b strings.Builder for i, c := range uc { if i > 0 { b.WriteString(", ") } b.WriteString(string(c)) } return b.String() }