Mercurial > gemma
annotate pkg/imports/pointwfs.go @ 4958:6d5d6b27c3c3 fairway-marks-import
Added pre commit hooks before commiting fairway marks to invalidate old.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Wed, 26 Feb 2020 12:54:33 +0100 |
parents | 7cc79c65a9e5 |
children | fb48bc6415c0 |
rev | line source |
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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) 2020 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 // * Tom Gottfried <tom.gottfried@intevation.de> |
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13 // * Sascha L. Teichmann <sascha.teichmann@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/models" |
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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 var ( |
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31 ErrFeatureIgnored = errors.New("feature ignored") |
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32 ErrFeatureDuplicated = errors.New("feature duplicated") |
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33 ) |
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34 |
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35 type ( |
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36 WFSPointConsumer interface { |
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37 Commit() error |
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38 Rollback() error |
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39 |
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40 NewProperties() interface{} |
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41 Consume(points pointSlice, properties interface{}, epsg int) error |
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42 } |
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43 |
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44 PointWFSJobCreator struct { |
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45 description string |
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46 depends [2][]string |
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47 |
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48 newConsumer func(context.Context, *sql.Conn, Feedback) (WFSPointConsumer, error) |
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49 } |
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50 |
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51 PointWFSJob struct { |
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52 models.WFSImport |
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53 creator *PointWFSJobCreator |
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54 } |
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55 ) |
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56 |
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57 func (pwjc *PointWFSJobCreator) Description() string { |
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58 return pwjc.description |
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59 } |
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60 |
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61 func (pwjc *PointWFSJobCreator) Depends() [2][]string { |
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62 return pwjc.depends |
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63 } |
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64 |
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65 func (*PointWFSJobCreator) AutoAccept() bool { |
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66 return true |
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67 } |
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68 |
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69 // StageDone is a NOP for WFS imports. |
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70 func (*PointWFSJobCreator) 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 func (pwjc *PointWFSJobCreator) Create() Job { |
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75 return &PointWFSJob{creator: pwjc} |
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76 } |
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77 |
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78 // Description gives a short info about relevant facts of this import. |
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79 func (pwj *PointWFSJob) Description() (string, error) { |
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80 return pwj.URL + "|" + pwj.FeatureType, nil |
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81 } |
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82 |
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83 // CleanUp for WFS imports is a NOP. |
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84 func (*PointWFSJob) CleanUp() error { |
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85 return nil |
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86 } |
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87 |
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88 func (pwj *PointWFSJob) Do( |
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89 ctx context.Context, |
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90 importID int64, |
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91 conn *sql.Conn, |
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92 feedback Feedback, |
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93 ) (interface{}, error) { |
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94 |
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95 start := time.Now() |
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96 |
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97 feedback.Info("Import %s", pwj.creator.Description()) |
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98 |
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99 feedback.Info("Loading capabilities from %s", pwj.URL) |
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100 caps, err := wfs.GetCapabilities(pwj.URL) |
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101 if err != nil { |
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102 feedback.Error("Loading capabilities failed: %v", err) |
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103 return nil, err |
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104 } |
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105 |
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106 ft := caps.FindFeatureType(pwj.FeatureType) |
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107 if ft == nil { |
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108 return nil, fmt.Errorf("unknown feature type '%s'", pwj.FeatureType) |
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109 } |
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110 |
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111 feedback.Info("Found feature type '%s'", pwj.FeatureType) |
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112 |
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113 epsg, err := wfs.CRSToEPSG(ft.DefaultCRS) |
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114 if err != nil { |
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115 feedback.Error("Unsupported CRS: '%s'", ft.DefaultCRS) |
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116 return nil, err |
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117 } |
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118 |
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119 if nilString(pwj.SortBy) != "" { |
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120 feedback.Info("Features will be sorted by '%s'", *pwj.SortBy) |
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121 } |
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122 |
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123 dl, err := wfs.GetFeatures(caps, pwj.FeatureType, nilString(pwj.SortBy)) |
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124 if err != nil { |
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125 feedback.Error("Cannot create GetFeature URLs. %v", err) |
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126 return nil, err |
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127 } |
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128 |
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129 var ( |
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130 unsupported = stringCounter{} |
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131 missingProperties int |
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132 badProperties int |
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133 dupes int |
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134 features int |
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135 ) |
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136 |
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137 consumer, err := pwj.creator.newConsumer(ctx, conn, feedback) |
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138 if err != nil { |
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139 return nil, err |
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140 } |
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141 defer consumer.Rollback() |
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142 |
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143 if err := dl.Download(nilString(pwj.User), nilString(pwj.Password), func(url string, r io.Reader) error { |
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144 feedback.Info("Get features from: '%s'", url) |
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145 rfc, err := wfs.ParseRawFeatureCollection(r) |
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146 if err != nil { |
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147 return fmt.Errorf("parsing GetFeature document failed: %v", err) |
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148 } |
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149 if rfc.CRS != nil { |
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150 crsName := rfc.CRS.Properties.Name |
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151 if epsg, err = wfs.CRSToEPSG(crsName); err != nil { |
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152 feedback.Error("Unsupported CRS: %d", crsName) |
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153 return err |
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|
154 } |
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|
155 } |
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|
156 |
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parents:
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|
157 // No features -> ignore. |
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158 if rfc.Features == nil { |
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159 return nil |
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|
160 } |
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161 |
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|
162 feedback.Info("Using EPSG: %d", epsg) |
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parents:
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|
163 |
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|
164 feedback.Info( |
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|
165 "Found %d features in data source", len(rfc.Features)) |
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|
166 |
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167 for _, feature := range rfc.Features { |
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168 if feature.Properties == nil || feature.Geometry.Coordinates == nil { |
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169 missingProperties++ |
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170 continue |
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|
171 } |
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|
172 |
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|
173 props := consumer.NewProperties() |
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174 if err := json.Unmarshal(*feature.Properties, props); err != nil { |
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Simplified importing of fairway marks.
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|
175 badProperties++ |
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Simplified importing of fairway marks.
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|
176 continue |
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|
177 } |
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178 |
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179 switch feature.Geometry.Type { |
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180 case "Point": |
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181 var p pointSlice |
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182 if err := json.Unmarshal(*feature.Geometry.Coordinates, &p); err != nil { |
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parents:
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183 return err |
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|
184 } |
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parents:
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|
185 |
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parents:
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|
186 err := consumer.Consume(p, props, epsg) |
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Simplified importing of fairway marks.
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parents:
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|
187 switch { |
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Simplified importing of fairway marks.
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parents:
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|
188 case err == ErrFeatureDuplicated: |
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Simplified importing of fairway marks.
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parents:
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|
189 dupes++ |
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parents:
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|
190 case err == ErrFeatureIgnored: |
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Simplified importing of fairway marks.
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parents:
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|
191 // be silent |
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parents:
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|
192 case err != nil: |
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Simplified importing of fairway marks.
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193 return err |
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194 default: |
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195 features++ |
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Simplified importing of fairway marks.
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parents:
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|
196 } |
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Simplified importing of fairway marks.
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parents:
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|
197 |
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Simplified importing of fairway marks.
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parents:
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|
198 default: |
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Simplified importing of fairway marks.
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|
199 unsupported[feature.Geometry.Type]++ |
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Simplified importing of fairway marks.
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parents:
diff
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|
200 } |
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Simplified importing of fairway marks.
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parents:
diff
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|
201 } |
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Simplified importing of fairway marks.
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parents:
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|
202 return nil |
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Simplified importing of fairway marks.
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parents:
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|
203 }); err != nil { |
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Simplified importing of fairway marks.
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parents:
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|
204 return nil, err |
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Simplified importing of fairway marks.
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parents:
diff
changeset
|
205 } |
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Simplified importing of fairway marks.
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parents:
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|
206 |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
207 if dupes > 0 { |
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Simplified importing of fairway marks.
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parents:
diff
changeset
|
208 feedback.Info( |
4958
6d5d6b27c3c3
Added pre commit hooks before commiting fairway marks to invalidate old.
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parents:
4956
diff
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|
209 "Features outside responsibility area and duplicates: %d", |
4946
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Simplified importing of fairway marks.
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parents:
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|
210 dupes) |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
211 } |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
212 |
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Simplified importing of fairway marks.
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parents:
diff
changeset
|
213 if badProperties > 0 { |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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|
214 feedback.Warn("Bad properties: %d", badProperties) |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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|
215 } |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
216 |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
217 if missingProperties > 0 { |
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Simplified importing of fairway marks.
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parents:
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|
218 feedback.Warn("Missing properties: %d", missingProperties) |
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Simplified importing of fairway marks.
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parents:
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|
219 } |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
220 |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
221 if len(unsupported) != 0 { |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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|
222 feedback.Warn("Unsupported types found: %s", unsupported) |
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Simplified importing of fairway marks.
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parents:
diff
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|
223 } |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
224 |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
225 if err = consumer.Commit(); err == nil { |
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Simplified importing of fairway marks.
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parents:
diff
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|
226 feedback.Info("Storing %d features took %s", |
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Simplified importing of fairway marks.
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parents:
diff
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|
227 features, time.Since(start)) |
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Simplified importing of fairway marks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
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|
228 } |
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Simplified importing of fairway marks.
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parents:
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|
229 |
4958
6d5d6b27c3c3
Added pre commit hooks before commiting fairway marks to invalidate old.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4956
diff
changeset
|
230 // Commit before eventually returning UnchangedError because we might |
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231 // have updated last_found |
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232 if features == 0 { |
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233 return nil, UnchangedError("no valid new features found") |
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234 } |
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235 |
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236 return nil, nil |
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237 } |
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238 |
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239 type ( |
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240 SQLPointConsumer struct { |
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241 ctx context.Context |
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242 tx *sql.Tx |
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243 feedback Feedback |
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244 newProperties func() interface{} |
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245 consume func(*SQLPointConsumer, pointSlice, interface{}, int) error |
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246 preCommit func(*SQLPointConsumer) error |
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247 savepoint func(func() error) error |
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248 stmts []*sql.Stmt |
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249 } |
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250 ) |
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251 |
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252 func (spc *SQLPointConsumer) Rollback() error { |
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253 if tx := spc.tx; tx != nil { |
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254 spc.releaseStmts() |
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255 spc.tx = nil |
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256 spc.ctx = nil |
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257 return tx.Rollback() |
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258 } |
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259 return nil |
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260 } |
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261 |
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262 func (spc *SQLPointConsumer) Commit() error { |
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263 if tx := spc.tx; tx != nil { |
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264 if spc.preCommit != nil { |
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265 if err := spc.preCommit(spc); err != nil { |
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266 return err |
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267 } |
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268 } |
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269 spc.releaseStmts() |
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270 spc.tx = nil |
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271 spc.ctx = nil |
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272 return tx.Commit() |
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273 } |
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274 return nil |
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275 } |
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276 |
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277 func (spc *SQLPointConsumer) NewProperties() interface{} { |
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278 return spc.newProperties() |
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279 } |
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280 |
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281 func (spc *SQLPointConsumer) Consume( |
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282 points pointSlice, |
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283 properties interface{}, |
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284 epsg int, |
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285 ) error { |
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286 return spc.consume(spc, points, properties, epsg) |
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287 } |
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288 |
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289 func newSQLConsumer( |
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290 init func(*SQLPointConsumer) error, |
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291 consume func(*SQLPointConsumer, pointSlice, interface{}, int) error, |
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292 preCommit func(*SQLPointConsumer) error, |
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293 newProperties func() interface{}, |
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294 |
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295 ) func(context.Context, *sql.Conn, Feedback) (WFSPointConsumer, error) { |
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296 return func(ctx context.Context, conn *sql.Conn, feedback Feedback) (WFSPointConsumer, error) { |
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297 tx, err := conn.BeginTx(ctx, nil) |
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298 if err != nil { |
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299 return nil, err |
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300 } |
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301 spc := &SQLPointConsumer{ |
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302 ctx: ctx, |
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303 tx: tx, |
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304 feedback: feedback, |
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305 newProperties: newProperties, |
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306 consume: consume, |
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307 preCommit: preCommit, |
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308 savepoint: Savepoint(ctx, tx, "feature"), |
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309 } |
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310 if err := init(spc); err != nil { |
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311 tx.Rollback() |
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312 return nil, err |
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313 } |
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314 return spc, nil |
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315 } |
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316 } |
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317 |
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318 func (spc *SQLPointConsumer) releaseStmts() { |
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319 for i := len(spc.stmts); i > 0; i-- { |
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320 spc.stmts[i-1].Close() |
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321 spc.stmts[i-1] = nil |
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322 } |
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323 spc.stmts = nil |
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324 } |
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325 |
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326 func prepareStmnts(queries ...string) func(*SQLPointConsumer) error { |
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327 return func(spc *SQLPointConsumer) error { |
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328 for _, query := range queries { |
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329 stmt, err := spc.tx.PrepareContext(spc.ctx, query) |
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330 if err != nil { |
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331 return err |
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332 } |
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333 spc.stmts = append(spc.stmts, stmt) |
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334 } |
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335 return nil |
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336 } |
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337 } |