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annotate pkg/imports/wx.go @ 1786:09349ca27dd7

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Imports: Removed duplicated code path to store WKB polygons into database.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 13 Jan 2019 13:02:39 +0100
parents 614c6c766691
children 1333f96f18d0
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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 L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package imports
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15
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16 import (
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17 "context"
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18 "database/sql"
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19 "encoding/json"
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20 "errors"
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21 "fmt"
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22 "io"
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23 "time"
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24
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25 "gemma.intevation.de/gemma/pkg/common"
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26 "gemma.intevation.de/gemma/pkg/wfs"
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27 )
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28
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29 // WaterwayAxis is an import job to import
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30 // the waterway axes in form of line string geometries
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31 // and attribute data from a WFS service.
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32 type WaterwayAxis struct {
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33 // URL the GetCapabilities URL of the WFS service.
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34 URL string `json:"url"`
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35 // FeatureType selects the feature type of the WFS service.
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36 FeatureType string `json:"feature-type"`
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37 // SortBy works around misconfigured services to
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38 // establish a sort order to get the features.
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39 SortBy string `json:"sort-by"`
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40 }
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41
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42 // WXJobKind is the import queue type identifier.
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43 const WXJobKind JobKind = "wx"
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44
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45 type wxJobCreator struct{}
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46
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47 func init() {
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48 RegisterJobCreator(WXJobKind, wxJobCreator{})
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49 }
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50
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51 func (wxJobCreator) Description() string { return "waterway axis" }
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52
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53 func (wxJobCreator) AutoAccept() bool { return true }
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54
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55 func (wxJobCreator) Create(_ JobKind, data string) (Job, error) {
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56 wx := new(WaterwayAxis)
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57 if err := common.FromJSONString(data, wx); err != nil {
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58 return nil, err
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59 }
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60 return wx, nil
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61 }
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62
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63 func (wxJobCreator) Depends() []string {
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64 return []string{
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65 "waterway_axis",
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66 }
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67 }
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68
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69 // StageDone is a NOP for waterway axis imports.
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70 func (wxJobCreator) StageDone(context.Context, *sql.Tx, int64) error {
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71 return nil
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72 }
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73
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74 // CleanUp for waterway axis imports is a NOP.
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75 func (*WaterwayAxis) CleanUp() error { return nil }
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76
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77 type waterwayAxisProperties struct {
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78 ObjNam string `json:"hydro_objnam"`
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79 NObjNnm *string `json:"hydro_nobjnm"`
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80 }
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81
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82 const (
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83 deleteWaterwayAxisSQL = `DELETE FROM waterway.waterway_axis`
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84 insertWaterwayAxisSQL = `
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85 INSERT INTO waterway.waterway_axis (wtwaxs, objnam, nobjnam)
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86 VALUES (
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87 ST_Transform(ST_GeomFromWKB($1, $2::integer), 4326)::geography,
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88 $3,
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89 $4
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90 )`
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91 )
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92
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93 // Do executes the actual waterway axis import.
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94 func (wx *WaterwayAxis) Do(
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95 ctx context.Context,
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96 importID int64,
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97 conn *sql.Conn,
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98 feedback Feedback,
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99 ) (interface{}, error) {
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100
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101 start := time.Now()
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102
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103 feedback.Info("Import waterway axis")
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104
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105 feedback.Info("Loading capabilities from %s", wx.URL)
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106 caps, err := wfs.GetCapabilities(wx.URL)
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107 if err != nil {
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108 feedback.Error("Loading capabilities failed: %v", err)
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109 return nil, err
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110 }
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111
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112 ft := caps.FindFeatureType(wx.FeatureType)
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113 if ft == nil {
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114 return nil, fmt.Errorf("Unknown feature type '%s'", wx.FeatureType)
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115 }
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116
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117 feedback.Info("Found feature type '%s", wx.FeatureType)
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118
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119 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
120 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
121 feedback.Error("Unsupported CRS name '%s'", ft.DefaultCRS)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
122 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
123 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
124
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fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
125 if wx.SortBy != "" {
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
126 feedback.Info("Features will be sorted by '%s'", wx.SortBy)
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
127 }
fb05027d93b6 Waterway axis: Be more verbose during import about feature type and sorting.
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parents: 1696
diff changeset
128
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parents: 1677
diff changeset
129 urls, err := wfs.GetFeaturesGET(
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
130 caps, wx.FeatureType, "application/json", wx.SortBy)
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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("Cannot create GetFeature URLs. %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
1681
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parents: 1680
diff changeset
136 tx, err := conn.BeginTx(ctx, nil)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
137 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
138 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
139 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
140 defer tx.Rollback()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
141
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
142 insertStmt, err := tx.PrepareContext(ctx, insertWaterwayAxisSQL)
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
143 if err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
144 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
145 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
146 defer insertStmt.Close()
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
147
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
148 // Delete the old features.
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parents: 1680
diff changeset
149 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
150 return nil, err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
151 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
152
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de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
153 var (
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parents: 1764
diff changeset
154 unsupported = stringCounter{}
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parents: 1679
diff changeset
155 missingProperties int
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
156 badProperties int
1681
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parents: 1680
diff changeset
157 features int
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
158 )
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parents: 1677
diff changeset
159
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parents: 1677
diff changeset
160 if err := wfs.DownloadURLs(urls, func(r io.Reader) error {
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parents: 1677
diff changeset
161 rfc, err := wfs.ParseRawFeatureCollection(r)
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parents: 1677
diff changeset
162 if err != nil {
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parents: 1754
diff changeset
163 return fmt.Errorf("parsing GetFeature document failed: %v", err)
1679
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parents: 1677
diff changeset
164 }
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
165 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
166 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
167 if epsg, err = wfs.CRSToEPSG(crsName); err != nil {
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
168 feedback.Error("Unsupported CRS: %d", crsName)
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 return err
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
170 }
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
171 }
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parents: 1677
diff changeset
172
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
173 // No features -> ignore.
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parents: 1677
diff changeset
174 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
175 return nil
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parents: 1677
diff changeset
176 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
177
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parents: 1682
diff changeset
178 feedback.Info("Using EPSG: %d", epsg)
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parents: 1682
diff changeset
179
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parents: 1677
diff changeset
180 for _, feature := range rfc.Features {
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
181 if feature.Properties == nil || feature.Geometry.Coordinates == nil {
1680
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parents: 1679
diff changeset
182 missingProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
183 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
184 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
185
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
186 var props waterwayAxisProperties
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
187
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
188 if err := json.Unmarshal(*feature.Properties, &props); err != nil {
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
189 badProperties++
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
190 continue
de8089944b19 Waterway axis import: Started extracting properties from the features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1679
diff changeset
191 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
192
1681
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
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parents: 1680
diff changeset
193 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
194 if props.NObjNnm != 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
195 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
196 }
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
197
1679
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parents: 1677
diff changeset
198 switch feature.Geometry.Type {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
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parents: 1677
diff changeset
199 case "LineString":
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parents: 1764
diff changeset
200 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
201 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
202 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
203 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
204 if _, err := insertStmt.ExecContext(
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
205 ctx,
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
206 l.asWKB(),
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
207 epsg,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
208 props.ObjNam,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
209 nobjnam,
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
210 ); 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
211 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
212 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
213 features++
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
214 case "MultiLineString":
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parents: 1764
diff changeset
215 var ls []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
216 if err := json.Unmarshal(*feature.Geometry.Coordinates, &ls); 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
217 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
218 }
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
219 for _, l := range ls {
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 if _, err := insertStmt.ExecContext(
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 ctx,
4d6ce621379e Waterway axis import: Completed, but the final commit unexpectedly resulted in rollback.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
222 l.asWKB(),
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 epsg,
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parents: 1680
diff changeset
224 props.ObjNam,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
225 nobjnam,
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1680
diff changeset
226 ); 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
227 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
228 }
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 features++
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 }
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
231 default:
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parents: 1764
diff changeset
232 unsupported[feature.Geometry.Type]++
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1677
diff changeset
233 }
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parents: 1677
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234 }
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235 return nil
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parents: 1677
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236 }); err != nil {
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parents: 1677
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237 feedback.Error("Downloading features failed: %v", err)
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238 return nil, err
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parents: 1677
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239 }
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parents: 1677
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240
1681
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parents: 1680
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241 if features == 0 {
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parents: 1680
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242 err := errors.New("No features found")
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parents: 1680
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243 feedback.Error("%v", err)
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parents: 1680
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244 return nil, err
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parents: 1680
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245 }
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parents: 1680
diff changeset
246
1680
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
diff changeset
247 if badProperties > 0 {
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248 feedback.Warn("Bad properties: %d", badProperties)
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parents: 1679
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249 }
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
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250
de8089944b19 Waterway axis import: Started extracting properties from the features.
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parents: 1679
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251 if missingProperties > 0 {
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parents: 1679
diff changeset
252 feedback.Warn("Missing properties: %d", missingProperties)
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parents: 1679
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253 }
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parents: 1679
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254
1785
614c6c766691 Waterway area import: Implemented.
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parents: 1764
diff changeset
255 if len(unsupported) != 0 {
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parents: 1764
diff changeset
256 feedback.Warn("Unsupported types found: %s", unsupported)
1679
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parents: 1677
diff changeset
257 }
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parents: 1677
diff changeset
258
1681
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parents: 1680
diff changeset
259 if err = tx.Commit(); err == nil {
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parents: 1680
diff changeset
260 feedback.Info("Storing %d features took %s",
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parents: 1680
diff changeset
261 features, time.Since(start))
1679
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parents: 1677
diff changeset
262 }
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parents: 1677
diff changeset
263
1681
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parents: 1680
diff changeset
264 return nil, err
1675
8fec3887c7e5 Waterway axis import: Added stub.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
265 }