Mercurial > gemma

annotate pkg/models/intservices.go @ 876:8b9bd9ccdd93 geo-style

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Upload style during boot. TODO: Connect with layer.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 30 Sep 2018 19:42:16 +0200
parents ad9272460ef3
children 254cd247826d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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1 package models
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2
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3 import (
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4 "context"
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5 "database/sql"
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6 "fmt"
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7 "log"
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8 "net/http"
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9 "strings"
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10 "sync"
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11
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12 "gemma.intevation.de/gemma/pkg/auth"
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13 "gemma.intevation.de/gemma/pkg/config"
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14 )
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15
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16 type IntEntry struct {
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17 Name string `json:"name"`
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18 Style sql.NullString `json:"-"` // This should be done separately.
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19 WMS bool `json:"wms"`
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20 WFS bool `json:"wfs"`
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21 }
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22
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23 type IntServices struct {
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24 entries []IntEntry
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25 mu sync.Mutex
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26 }
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27
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28 const (
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29 selectPublishedServices = `SELECT relname, style, as_wms, as_wfs
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30 FROM sys_admin.published_services JOIN pg_class ON name = oid ORDER by relname`
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31
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32 updateStyleSQL = `
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33 UPDATE sys_admin.published_services
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34 SET style = xslt_process($1, $2, $3)::bytea
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35 WHERE name IN (SELECT oid FROM pg_class WHERE relname = $4)`
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36 )
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37
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38 const (
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39 replaceNameXSLT = `<?xml version="1.0"?>
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40 <xsl:stylesheet version="1.0"
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41 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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42 xmlns:sld="http://www.opengis.net/sld"
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43 xmlns:se="http://www.opengis.net/se">
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45 <xsl:param name="name"/>
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46
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47 <xsl:template
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48 match="/sld:StyledLayerDescriptor/sld:NamedLayer/sld:Name/text()">
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49 <xsl:value-of select="$name"/>
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50 </xsl:template>
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51
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52 <xsl:template
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53 match="/sld:StyledLayerDescriptor/sld:NamedLayer/se:Name/text()">
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54 <xsl:value-of select="$name"/>
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55 </xsl:template>
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56
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57 <xsl:template match="@*|node()">
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58 <xsl:copy>
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59 <xsl:apply-templates select="@*|node()"/>
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60 </xsl:copy>
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61 </xsl:template>
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62 </xsl:stylesheet>`
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63 )
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64
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65 var InternalServices = &IntServices{}
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66
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67 func UpdateInternalStyle(req *http.Request, name, style string) error {
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68 return auth.RunAsSessionUser(req, func(conn *sql.Conn) error {
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69 param := fmt.Sprintf("name='%s'", strings.Replace(name, ",", "", -1))
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70 _, err := conn.ExecContext(
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71 req.Context(), updateStyleSQL,
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72 style, replaceNameXSLT, param, name)
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73 if err == nil {
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74 InternalServices.Invalidate()
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75 }
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76 return err
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77 })
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78 }
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79
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80 func (ps *IntServices) Find(name string) (string, bool) {
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81 ps.mu.Lock()
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82 defer ps.mu.Unlock()
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83
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84 if ps.entries == nil {
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85 if err := ps.load(); err != nil {
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86 log.Printf("error: %v\n", err)
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87 return "", false
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88 }
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89 }
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90
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91 if ps.has(name) {
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92 return config.GeoServerURL() + "/" + name, true
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93 }
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94 return "", false
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95 }
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96
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97 func (ps *IntServices) has(service string) bool {
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98 var check func(*IntEntry) bool
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99 switch service {
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100 case "wms":
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101 check = func(e *IntEntry) bool { return e.WMS }
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102 case "wfs":
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103 check = func(e *IntEntry) bool { return e.WFS }
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104 default:
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105 return false
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106 }
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107 for i := range ps.entries {
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108 if check(&ps.entries[i]) {
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109 return true
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110 }
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111 }
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112 return false
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113 }
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114
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115 func (ps *IntServices) load() error {
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116 // make empty slice to prevent retry if slice is empty.
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117 ps.entries = []IntEntry{}
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118 return auth.RunAs("sys_admin", context.Background(),
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119 func(conn *sql.Conn) error {
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120 rows, err := conn.QueryContext(
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121 context.Background(), selectPublishedServices)
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122 if err != nil {
441
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123 return err
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parents:
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124 }
501
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125 defer rows.Close()
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126 for rows.Next() {
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127 var entry IntEntry
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128 if err := rows.Scan(
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129 &entry.Name, &entry.Style,
599
ac325d191009 Ficxed typo when scanning WMS.
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130 &entry.WMS, &entry.WFS,
501
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131 ); err != nil {
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132 return err
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133 }
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134 ps.entries = append(ps.entries, entry)
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135 }
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136 return rows.Err()
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137 })
441
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138 }
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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139
474
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140 func (ps *IntServices) Invalidate() {
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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141 ps.mu.Lock()
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142 ps.entries = nil
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143 ps.mu.Unlock()
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144 }
444
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diff changeset
145
474
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diff changeset
146 func InternalAll(IntEntry) bool { return true }
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147 func IntWMS(entry IntEntry) bool { return entry.WMS }
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148 func IntWFS(entry IntEntry) bool { return entry.WFS }
444
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parents: 442
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149
871
f0b6852c14d1 More on uploading styles to gemma.
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parents: 634
diff changeset
150 func IntByName(name string) func(IntEntry) bool {
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151 return func(entry IntEntry) bool { return entry.Name == name }
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152 }
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diff changeset
153
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diff changeset
154 func IntAnd(a, b func(IntEntry) bool) func(IntEntry) bool {
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diff changeset
155 return func(entry IntEntry) bool { return a(entry) && b(entry) }
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parents: 634
diff changeset
156 }
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diff changeset
157
876
8b9bd9ccdd93 Upload style during boot. TODO: Connect with layer.
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parents: 873
diff changeset
158 func IntWithStyle(entry IntEntry) bool {
8b9bd9ccdd93 Upload style during boot. TODO: Connect with layer.
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parents: 873
diff changeset
159 return entry.Style.Valid
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parents: 873
diff changeset
160 }
8b9bd9ccdd93 Upload style during boot. TODO: Connect with layer.
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parents: 873
diff changeset
161
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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parents: 473
diff changeset
162 func (ps *IntServices) Filter(accept func(IntEntry) bool) []IntEntry {
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
163 ps.mu.Lock()
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parents: 442
diff changeset
164 defer ps.mu.Unlock()
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parents: 442
diff changeset
165 if ps.entries == nil {
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
166 if err := ps.load(); err != nil {
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
167 log.Printf("error: %v\n", err)
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
168 return nil
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
169 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
170 }
474
11d80120ed3d Renamed published services to internal services to be more symmetrical to external services.
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parents: 473
diff changeset
171 pe := make([]IntEntry, 0, len(ps.entries))
445
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
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parents: 444
diff changeset
172 for _, e := range ps.entries {
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
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parents: 444
diff changeset
173 if accept(e) {
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
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parents: 444
diff changeset
174 pe = append(pe, e)
444
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parents: 442
diff changeset
175 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
176 }
c315885825e5 Publish WFS layers on GeoServer from database configuration.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 442
diff changeset
177
445
37742dd72fdb Use a sorted slice for published layers to get rid of extra sorting.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 444
diff changeset
178 return pe
444
c315885825e5 Publish WFS layers on GeoServer from database configuration.
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parents: 442
diff changeset
179 }