Mercurial > gemma
view pkg/controllers/search.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 | 5bb1e3c1f364 |
children | 571801483a70 |
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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 Wilde <sascha.wilde@intevation.de> // * Sascha Teichmann <sascha.teichmann@intevation.de> package controllers import ( "database/sql" "net/http" "regexp" "strconv" "strings" "gemma.intevation.de/gemma/pkg/models" ) const ( searchHectometreSQL = `SELECT COALESCE(json_agg(r),'[]') FROM (SELECT (location_code).hectometre || ' rhm' AS name, ST_AsGeoJSON(geom)::json AS geom, 'rhm' AS type FROM waterway.distance_marks_virtual WHERE (location_code).hectometre = $1) r` searchMostSQL = `SELECT search_most($1)::text` listBottlenecksSQL = ` SELECT COALESCE(json_agg(r),'[]') FROM ( SELECT objnam AS name, ST_AsGeoJSON(ST_Centroid(area))::json AS geom, 'bottleneck' AS type FROM waterway.bottlenecks ORDER BY objnam) r ` ) var rkmRegex = regexp.MustCompile( "^[[:space:]]*([0-9]+)([,.]([0-9]))?[[:space:]]*$", ) func searchFeature( input interface{}, req *http.Request, db *sql.Conn, ) (jr JSONResult, err error) { s := input.(*models.SearchRequest) if len(s.SearchString) == 0 { err = JSONError{http.StatusBadRequest, "error: empty search string"} return } var result string m := rkmRegex.FindStringSubmatch(s.SearchString) if len(m) != 0 { // Handle search for river kilometre: var hectometre int if hectometre, err = strconv.Atoi(m[1]); err != nil { return } hectometre *= 10 if m[3] != "" { var h int if h, err = strconv.Atoi(m[3]); err != nil { return } hectometre += h } err = db.QueryRowContext( req.Context(), searchHectometreSQL, hectometre, ).Scan(&result) } else { // Hande search for bottlencks: err = db.QueryRowContext( req.Context(), searchMostSQL, s.SearchString, ).Scan(&result) } if err != nil { return } jr.Result = strings.NewReader(result) return } func listBottlenecks( _ interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { var result string err = conn.QueryRowContext( req.Context(), listBottlenecksSQL).Scan(&result) switch { case err == sql.ErrNoRows: err = JSONError{ Code: http.StatusNotFound, Message: "Cannot find any bottleneck.", } return case err != nil: return } jr = JSONResult{Result: strings.NewReader(result)} return }