Mercurial > gemma
view pkg/models/common.go @ 2624:9dbaf69c7a66
Improve geoserver config to better calculate bounding boxes
* Disable the use of estimated extents for the postgis storage
configuration for geoserver, which is set via the gemma middleware.
This way we are able to get better bounding boxes for many layers
where the postgis function `ST_EstimatedExtent()` would be far off.
author | Bernhard Reiter <bernhard@intevation.de> |
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date | Wed, 13 Mar 2019 16:18:39 +0100 |
parents | 97bba8b51b9c |
children | 8080007d3c06 |
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// 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() }