Mercurial > gemma
annotate pkg/controllers/search.go @ 2196:e57ba9585aaa
Fairway availability import: More idiomatic code / cosmetics.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Tue, 12 Feb 2019 13:04:48 +0100 |
parents | 5bb1e3c1f364 |
children | 571801483a70 |
rev | line source |
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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 "regexp" |
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21 "strconv" |
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22 "strings" |
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23 |
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24 "gemma.intevation.de/gemma/pkg/models" |
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25 ) |
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26 |
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27 const ( |
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28 searchHectometreSQL = `SELECT COALESCE(json_agg(r),'[]') |
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29 FROM (SELECT (location_code).hectometre || ' rhm' AS name, |
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30 ST_AsGeoJSON(geom)::json AS geom, 'rhm' AS type |
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31 FROM waterway.distance_marks_virtual |
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32 WHERE (location_code).hectometre = $1) r` |
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33 |
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34 searchMostSQL = `SELECT search_most($1)::text` |
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35 |
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36 listBottlenecksSQL = ` |
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37 SELECT COALESCE(json_agg(r),'[]') |
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38 FROM ( |
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39 SELECT |
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40 objnam AS name, |
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41 ST_AsGeoJSON(ST_Centroid(area))::json AS geom, |
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42 'bottleneck' AS type |
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43 FROM waterway.bottlenecks |
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44 ORDER BY objnam) r |
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45 ` |
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46 ) |
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47 |
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48 var rkmRegex = regexp.MustCompile( |
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49 "^[[:space:]]*([0-9]+)([,.]([0-9]))?[[:space:]]*$", |
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50 ) |
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51 |
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52 func searchFeature( |
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53 input interface{}, |
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54 req *http.Request, |
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55 db *sql.Conn, |
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56 ) (jr JSONResult, err error) { |
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57 |
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58 s := input.(*models.SearchRequest) |
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59 |
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60 if len(s.SearchString) == 0 { |
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61 err = JSONError{http.StatusBadRequest, |
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62 "error: empty search string"} |
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63 return |
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64 } |
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65 |
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66 var result string |
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67 |
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68 m := rkmRegex.FindStringSubmatch(s.SearchString) |
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69 if len(m) != 0 { |
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70 // Handle search for river kilometre: |
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71 var hectometre int |
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72 if hectometre, err = strconv.Atoi(m[1]); err != nil { |
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73 return |
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74 } |
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75 |
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76 hectometre *= 10 |
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77 if m[3] != "" { |
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78 var h int |
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79 if h, err = strconv.Atoi(m[3]); err != nil { |
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80 return |
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81 } |
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82 hectometre += h |
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83 } |
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84 |
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85 err = db.QueryRowContext( |
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86 req.Context(), |
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87 searchHectometreSQL, |
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88 hectometre, |
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89 ).Scan(&result) |
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90 } else { |
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91 // Hande search for bottlencks: |
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92 err = db.QueryRowContext( |
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93 req.Context(), |
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94 searchMostSQL, |
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95 s.SearchString, |
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96 ).Scan(&result) |
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97 } |
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98 |
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99 if err != nil { |
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100 return |
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101 } |
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102 |
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103 jr.Result = strings.NewReader(result) |
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104 return |
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105 } |
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106 |
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107 func listBottlenecks( |
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108 _ interface{}, |
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109 req *http.Request, |
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110 conn *sql.Conn, |
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111 ) (jr JSONResult, err error) { |
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112 |
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113 var result string |
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114 err = conn.QueryRowContext( |
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115 req.Context(), listBottlenecksSQL).Scan(&result) |
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116 |
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117 switch { |
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118 case err == sql.ErrNoRows: |
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119 err = JSONError{ |
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120 Code: http.StatusNotFound, |
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121 Message: "Cannot find any bottleneck.", |
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122 } |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
123 return |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
124 case err != nil: |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
125 return |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
126 } |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
127 |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
128 jr = JSONResult{Result: strings.NewReader(result)} |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
129 return |
146245d2198f
List all bottlenecks via GET /api/bottlenecks
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1024
diff
changeset
|
130 } |