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annotate pkg/imports/wx.go @ 4852:046a07a33b19

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Fixed the golint issues of the imports package.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 19 Nov 2019 16:08:55 +0100
parents 5062ccb2381d
children 783d0bec86d3
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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, 2019 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 L. Teichmann <sascha.teichmann@intevation.de>
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13 // * Tom Gottfried <tom.gottfried@intevation.de>
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14
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15 package imports
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16
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17 import (
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18 "context"
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19 "database/sql"
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20 "encoding/json"
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21 "errors"
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22 "fmt"
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23 "io"
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24 "time"
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25
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26 "gemma.intevation.de/gemma/pkg/pgxutils"
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27 "gemma.intevation.de/gemma/pkg/wfs"
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28 )
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29
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30 // WaterwayAxis is an import job to import
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31 // the waterway axes in form of line string geometries
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32 // and attribute data from a WFS service.
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33 type WaterwayAxis struct {
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34 // URL the GetCapabilities URL of the WFS service.
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35 URL string `json:"url"`
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36 // FeatureType selects the feature type of the WFS service.
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37 FeatureType string `json:"feature-type"`
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38 // SortBy works around misconfigured services to
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39 // establish a sort order to get the features.
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40 SortBy string `json:"sort-by"`
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41 // User is an optional username for Basic Auth.
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42 User string `json:"user,omitempty"`
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43 // Password is an optional password for Basic Auth.
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44 Password string `json:"password,omitempty"`
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45 }
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46
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47 // Description gives a short info about relevant facts of this import.
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48 func (wx *WaterwayAxis) Description() (string, error) {
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49 return wx.URL + "|" + wx.FeatureType, nil
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50 }
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51
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52 // WXJobKind is the import queue type identifier.
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53 const WXJobKind JobKind = "wx"
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54
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55 type wxJobCreator struct{}
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56
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57 func init() {
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58 RegisterJobCreator(WXJobKind, wxJobCreator{})
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59 }
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60
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61 func (wxJobCreator) Description() string { return "waterway axis" }
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62
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63 func (wxJobCreator) AutoAccept() bool { return true }
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64
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65 func (wxJobCreator) Create() Job { return new(WaterwayAxis) }
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66
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67 func (wxJobCreator) Depends() [2][]string {
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68 return [2][]string{
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69 {"waterway_axis"},
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70 {},
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71 }
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72 }
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73
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74 // StageDone is a NOP for waterway axis imports.
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75 func (wxJobCreator) StageDone(context.Context, *sql.Tx, int64) error {
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76 return nil
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77 }
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78
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79 // CleanUp for waterway axis imports is a NOP.
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80 func (*WaterwayAxis) CleanUp() error { return nil }
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81
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82 type waterwayAxisProperties struct {
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83 ObjNam string `json:"hydro_objnam"`
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84 NObjNnm *string `json:"hydro_nobjnm"`
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85 }
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86
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87 const (
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88 deleteWaterwayAxisSQL = `
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89 WITH resp AS (
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90 SELECT users.current_user_area_utm() AS a
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91 )
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92 DELETE FROM waterway.waterway_axis
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93 WHERE pg_has_role('sys_admin', 'MEMBER')
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94 OR ST_Covers((SELECT a FROM resp),
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95 ST_Transform(wtwaxs::geometry, (SELECT ST_SRID(a) FROM resp)))
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96 `
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97
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98 insertWaterwayAxisSQL = `
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99 WITH resp AS (
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100 SELECT users.current_user_area_utm() AS a
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101 )
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102 INSERT INTO waterway.waterway_axis (wtwaxs, objnam, nobjnam)
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103 SELECT dmp.geom, $3, $4
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104 FROM ST_GeomFromWKB($1, $2::integer) AS new_line (new_line),
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105 ST_Dump(ST_Transform(ST_CollectionExtract(
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106 CASE WHEN pg_has_role('sys_admin', 'MEMBER')
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107 THEN ST_Node(ST_Transform(new_line,
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108 best_utm(ST_Transform(new_line, 4326))))
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109 ELSE ST_Intersection((SELECT a FROM resp),
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110 ST_Node(ST_Transform(new_line, (SELECT ST_SRID(a) FROM resp))))
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111 END,
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112 2), 4326)) AS dmp
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113 RETURNING id
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114 `
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115 )
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116
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117 // Do executes the actual waterway axis import.
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118 func (wx *WaterwayAxis) Do(
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119 ctx context.Context,
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120 importID int64,
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diff changeset
121 conn *sql.Conn,
8fec3887c7e5 Waterway axis import: Added stub.
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parents:
diff changeset
122 feedback Feedback,
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parents:
diff changeset
123 ) (interface{}, error) {
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parents:
diff changeset
124
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diff changeset
125 start := time.Now()
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parents: 1677
diff changeset
126
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parents: 1677
diff changeset
127 feedback.Info("Import waterway axis")
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parents: 1677
diff changeset
128
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parents: 1677
diff changeset
129 feedback.Info("Loading capabilities from %s", wx.URL)
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parents: 1677
diff changeset
130 caps, err := wfs.GetCapabilities(wx.URL)
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parents: 1677
diff changeset
131 if err != nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
132 feedback.Error("Loading capabilities failed: %v", err)
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parents: 1677
diff changeset
133 return nil, err
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
134 }
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parents: 1677
diff changeset
135
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
136 ft := caps.FindFeatureType(wx.FeatureType)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
137 if ft == nil {
4177
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parents: 4147
diff changeset
138 return nil, fmt.Errorf("unknown feature type '%s'", wx.FeatureType)
1679
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parents: 1677
diff changeset
139 }
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parents: 1677
diff changeset
140
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parents: 1696
diff changeset
141 feedback.Info("Found feature type '%s", wx.FeatureType)
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
142
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parents: 1680
diff changeset
143 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS)
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parents: 1680
diff changeset
144 if err != nil {
4832
5062ccb2381d Unified error message on "Unsupported CRS"
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parents: 4799
diff changeset
145 feedback.Error("Unsupported CRS: '%s'", ft.DefaultCRS)
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
146 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
147 }
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parents: 1680
diff changeset
148
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parents: 1696
diff changeset
149 if wx.SortBy != "" {
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parents: 1696
diff changeset
150 feedback.Info("Features will be sorted by '%s'", wx.SortBy)
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parents: 1696
diff changeset
151 }
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1696
diff changeset
152
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56c8ef515d93 WFS downloader: Use new GML/GeoJSON factory function in gemma.
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parents: 2719
diff changeset
153 dl, err := wfs.GetFeatures(caps, wx.FeatureType, wx.SortBy)
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parents: 1677
diff changeset
154 if err != nil {
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parents: 1677
diff changeset
155 feedback.Error("Cannot create GetFeature URLs. %v", err)
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parents: 1677
diff changeset
156 return nil, err
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
157 }
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parents: 1677
diff changeset
158
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parents: 1680
diff changeset
159 tx, err := conn.BeginTx(ctx, nil)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
160 if err != nil {
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parents: 1680
diff changeset
161 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
162 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
163 defer tx.Rollback()
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parents: 1680
diff changeset
164
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
165 insertStmt, err := tx.PrepareContext(ctx, insertWaterwayAxisSQL)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
166 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
167 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
168 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
169 defer insertStmt.Close()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
170
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
171 // Delete the old features.
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
172 if _, err := tx.ExecContext(ctx, deleteWaterwayAxisSQL); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
173 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
174 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
175
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parents: 1679
diff changeset
176 var (
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parents: 1764
diff changeset
177 unsupported = stringCounter{}
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parents: 1679
diff changeset
178 missingProperties int
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
179 badProperties int
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0d79f5eec630 Fix logging in axis import
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parents: 2912
diff changeset
180 outside int
1681
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parents: 1680
diff changeset
181 features int
1680
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parents: 1679
diff changeset
182 )
1679
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parents: 1677
diff changeset
183
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parents: 2726
diff changeset
184 if err := dl.Download(wx.User, wx.Password, func(url string, r io.Reader) error {
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parents: 1828
diff changeset
185 feedback.Info("Get features from: '%s'", url)
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parents: 1677
diff changeset
186 rfc, err := wfs.ParseRawFeatureCollection(r)
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parents: 1677
diff changeset
187 if err != nil {
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parents: 1754
diff changeset
188 return fmt.Errorf("parsing GetFeature document failed: %v", err)
1679
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parents: 1677
diff changeset
189 }
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
190 if rfc.CRS != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
191 crsName := rfc.CRS.Properties.Name
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
192 if epsg, err = wfs.CRSToEPSG(crsName); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
193 feedback.Error("Unsupported CRS: %d", crsName)
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
194 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
195 }
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
196 }
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parents: 1677
diff changeset
197
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
198 // No features -> ignore.
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parents: 1677
diff changeset
199 if rfc.Features == nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
200 return nil
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parents: 1677
diff changeset
201 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
202
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509e8728e846 Fixed pre-calculated size of 2D WKB line strings.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1682
diff changeset
203 feedback.Info("Using EPSG: %d", epsg)
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1682
diff changeset
204
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5850ac0f9ab6 Axis import: do not fail if one item fails.
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parents: 2730
diff changeset
205 savepoint := Savepoint(ctx, tx, "feature")
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Tom Gottfried <tom@intevation.de>
parents: 2730
diff changeset
206
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parents: 1677
diff changeset
207 for _, feature := range rfc.Features {
1681
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parents: 1680
diff changeset
208 if feature.Properties == nil || feature.Geometry.Coordinates == nil {
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
209 missingProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
210 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
211 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
212
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
213 var props waterwayAxisProperties
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
214
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
215 if err := json.Unmarshal(*feature.Properties, &props); err != nil {
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
216 badProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
217 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
218 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
219
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
220 var nobjnam sql.NullString
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
221 if props.NObjNnm != nil {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
222 nobjnam = sql.NullString{String: *props.NObjNnm, Valid: true}
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
223 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
224
1679
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
225 switch feature.Geometry.Type {
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parents: 1677
diff changeset
226 case "LineString":
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 1764
diff changeset
227 var l lineSlice
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
228 if err := json.Unmarshal(*feature.Geometry.Coordinates, &l); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
229 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
230 }
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
231 if err := storeLinestring(
1681
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
232 ctx,
2780
5850ac0f9ab6 Axis import: do not fail if one item fails.
Tom Gottfried <tom@intevation.de>
parents: 2730
diff changeset
233 savepoint,
2726
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
234 feedback,
dff749c07ae0 Warn if imported axis linestrings cross each other
Tom Gottfried <tom@intevation.de>
parents: 2723
diff changeset
235 l,
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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236 epsg,
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237 props,
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238 nobjnam,
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239 &outside,
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240 &features,
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241 insertStmt); err != nil {
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242 return err
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243 }
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244 case "MultiLineString":
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245 var ls []lineSlice
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246 if err := json.Unmarshal(*feature.Geometry.Coordinates, &ls); err != nil {
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247 return err
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248 }
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249 for _, l := range ls {
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250 if err := storeLinestring(
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251 ctx,
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252 savepoint,
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253 feedback,
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254 l,
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255 epsg,
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256 props,
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257 nobjnam,
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258 &outside,
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259 &features,
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260 insertStmt); err != nil {
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261 return err
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262 }
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263 }
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264 default:
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265 unsupported[feature.Geometry.Type]++
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266 }
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267 }
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268 return nil
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269 }); err != nil {
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270 return nil, err
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271 }
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272
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273 if badProperties > 0 {
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274 feedback.Warn("Bad properties: %d", badProperties)
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275 }
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276
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277 if missingProperties > 0 {
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278 feedback.Warn("Missing properties: %d", missingProperties)
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279 }
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280
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diff changeset
281 if len(unsupported) != 0 {
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282 feedback.Warn("Unsupported types found: %s", unsupported)
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283 }
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parents: 1677
diff changeset
284
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285 if outside > 0 {
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286 feedback.Info("Features outside responsibility area: %d", outside)
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287 }
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288
1828
1ecfcf46e4da Waterway area/axis: Be more informative if features are bad.
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parents: 1796
diff changeset
289 if features == 0 {
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parents: 4147
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290 return nil, errors.New("no features found")
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parents: 1796
diff changeset
291 }
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parents: 1796
diff changeset
292
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parents: 1680
diff changeset
293 if err = tx.Commit(); err == nil {
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parents: 1680
diff changeset
294 feedback.Info("Storing %d features took %s",
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295 features, time.Since(start))
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296 }
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diff changeset
297
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diff changeset
298 return nil, err
1675
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parents:
diff changeset
299 }
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300
dff749c07ae0 Warn if imported axis linestrings cross each other
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301 func storeLinestring(
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302 ctx context.Context,
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303 savepoint func(func() error) error,
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diff changeset
304 feedback Feedback,
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parents: 2723
diff changeset
305 l lineSlice,
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parents: 2723
diff changeset
306 epsg int,
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parents: 2723
diff changeset
307 props waterwayAxisProperties,
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parents: 2723
diff changeset
308 nobjnam sql.NullString,
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parents: 2912
diff changeset
309 outside, features *int,
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72451510d417 Remove expensive check with doubtful usefulness
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parents: 2937
diff changeset
310 insertStmt *sql.Stmt,
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parents: 2723
diff changeset
311 ) error {
dff749c07ae0 Warn if imported axis linestrings cross each other
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parents: 2723
diff changeset
312 var id int
2937
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parents: 2912
diff changeset
313 err := savepoint(func() error {
2780
5850ac0f9ab6 Axis import: do not fail if one item fails.
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parents: 2730
diff changeset
314 err := insertStmt.QueryRowContext(
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parents: 2730
diff changeset
315 ctx,
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parents: 2730
diff changeset
316 l.asWKB(),
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parents: 2730
diff changeset
317 epsg,
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parents: 2730
diff changeset
318 props.ObjNam,
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parents: 2730
diff changeset
319 nobjnam,
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parents: 2730
diff changeset
320 ).Scan(&id)
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dff749c07ae0 Warn if imported axis linestrings cross each other
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parents: 2723
diff changeset
321 return err
2937
0d79f5eec630 Fix logging in axis import
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parents: 2912
diff changeset
322 })
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parents: 2912
diff changeset
323 switch {
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parents: 2912
diff changeset
324 case err == sql.ErrNoRows:
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parents: 2912
diff changeset
325 *outside++
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parents: 2912
diff changeset
326 // ignore -> filtered by responsibility_areas
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parents: 2912
diff changeset
327 return nil
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parents: 2912
diff changeset
328 case err != nil:
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5d7ce7f926eb Log fatal errors as errors, not warnings, in imports
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parents: 4177
diff changeset
329 feedback.Error(pgxutils.ReadableError{Err: err}.Error())
2937
0d79f5eec630 Fix logging in axis import
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parents: 2912
diff changeset
330 default:
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parents: 2912
diff changeset
331 *features++
2726
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parents: 2723
diff changeset
332 }
dff749c07ae0 Warn if imported axis linestrings cross each other
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parents: 2723
diff changeset
333 return nil
dff749c07ae0 Warn if imported axis linestrings cross each other
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parents: 2723
diff changeset
334 }