Mercurial > gemma

annotate pkg/controllers/search.go @ 3984:2fa052a44300

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Set schema version in update-db.sh, not in extra scripts. Also fixed handling of empty gemma_schema_version table.
author Sascha Wilde <wilde@intevation.de>
date Wed, 17 Jul 2019 13:54:01 +0200
parents f68529ff47a4
children 1458c9b0fdaa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha Wilde <sascha.wilde@intevation.de>
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13 // * Sascha Teichmann <sascha.teichmann@intevation.de>
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14
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15 package controllers
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16
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17 import (
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18 "database/sql"
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19 "net/http"
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20 "strings"
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21
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22 "gemma.intevation.de/gemma/pkg/models"
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23 )
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24
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25 const (
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26 searchMostSQL = `SELECT search_most($1)::text`
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27
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28 listBottlenecksSQL = `
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29 SELECT COALESCE(json_agg(r),'[]')
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30 FROM (
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31 SELECT
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32 objnam AS name,
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33 ST_AsGeoJSON(ST_Centroid(area))::json AS geom,
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34 'bottleneck' AS type
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35 FROM waterway.bottlenecks
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36 WHERE validity @> current_timestamp
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37 ORDER BY objnam) r
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38 `
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39 )
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40
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41 func searchFeature(
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42 input interface{},
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43 req *http.Request,
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44 db *sql.Conn,
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45 ) (jr JSONResult, err error) {
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46
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47 s := input.(*models.SearchRequest)
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48
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49 if len(s.SearchString) == 0 {
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50 err = JSONError{http.StatusBadRequest,
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51 "error: empty search string"}
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52 return
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53 }
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54
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55 var result string
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56 err = db.QueryRowContext(
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57 req.Context(),
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58 searchMostSQL,
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59 s.SearchString,
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60 ).Scan(&result)
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61
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62 if err != nil {
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63 return
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64 }
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65
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66 jr.Result = strings.NewReader(result)
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67 return
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68 }
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69
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70 func listBottlenecks(
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71 _ interface{},
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72 req *http.Request,
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73 conn *sql.Conn,
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74 ) (jr JSONResult, err error) {
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75
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76 var result string
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77 err = conn.QueryRowContext(
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78 req.Context(), listBottlenecksSQL).Scan(&result)
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79
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80 switch {
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81 case err == sql.ErrNoRows:
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82 err = JSONError{
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83 Code: http.StatusNotFound,
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84 Message: "Cannot find any bottleneck.",
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85 }
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86 return
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87 case err != nil:
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88 return
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89 }
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90
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91 jr = JSONResult{Result: strings.NewReader(result)}
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92 return
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93 }