Mercurial > gemma
annotate pkg/models/common.go @ 3678:8f58851927c0
client: make layer factory only return new layer config for individual maps
instead of each time it is invoked. The purpose of the factory was to support multiple maps with individual layers.
But returning a new config each time it is invoked leads to bugs that rely on the layer's state. Now this factory
reuses the same objects it created before, per map.
author | Markus Kottlaender <markus@intevation.de> |
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date | Mon, 17 Jun 2019 17:31:35 +0200 |
parents | 97bba8b51b9c |
children | 8080007d3c06 |
rev | line source |
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1017
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1 // This is Free Software under GNU Affero General Public License v >= 3.0 |
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2 // without warranty, see README.md and license for details. |
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3 // |
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4 // SPDX-License-Identifier: AGPL-3.0-or-later |
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5 // License-Filename: LICENSES/AGPL-3.0.txt |
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6 // |
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7 // Copyright (C) 2018 by via donau |
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH |
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9 // Software engineering by Intevation GmbH |
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10 // |
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11 // Author(s): |
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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13 |
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14 package models |
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15 |
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16 import ( |
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17 "database/sql/driver" |
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18 "encoding/json" |
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19 "errors" |
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20 "fmt" |
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21 "strings" |
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22 "time" |
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23 |
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24 "gemma.intevation.de/gemma/pkg/common" |
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25 ) |
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26 |
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27 var ( |
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28 errNoString = errors.New("Not a string") |
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29 errNoByteSlice = errors.New("Not a byte slice") |
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30 ) |
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31 |
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32 // WGS84 is the EPSG of the World Geodetic System 1984. |
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33 const WGS84 = 4326 |
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34 |
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35 type ( |
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36 Date struct{ time.Time } |
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37 Time struct{ time.Time } |
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38 |
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39 // Country is a valid country 2 letter code. |
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40 Country string |
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41 // UniqueCountries is a list of unique countries. |
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42 UniqueCountries []Country |
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43 ) |
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44 |
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45 func (d Date) MarshalJSON() ([]byte, error) { |
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46 return json.Marshal(d.Format(common.DateFormat)) |
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47 } |
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48 |
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49 func (d *Date) UnmarshalJSON(data []byte) error { |
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50 var s string |
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51 if err := json.Unmarshal(data, &s); err != nil { |
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52 return err |
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53 } |
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54 d2, err := time.Parse(common.DateFormat, s) |
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55 if err == nil { |
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56 *d = Date{d2} |
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57 } |
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58 return err |
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59 } |
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60 |
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61 func (t Time) MarshalJSON() ([]byte, error) { |
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62 return json.Marshal(t.Format(common.TimeFormat)) |
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63 } |
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64 |
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65 func (t *Time) UnmarshalJSON(data []byte) error { |
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66 var s string |
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67 if err := json.Unmarshal(data, &s); err != nil { |
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68 return err |
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69 } |
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70 t2, err := time.Parse(common.TimeFormat, s) |
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71 if err == nil { |
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72 *t = Time{t2} |
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73 } |
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74 return err |
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75 } |
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76 |
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77 var ( |
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78 validCountries = []string{ |
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79 "AT", "BG", "DE", "HU", "HR", |
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80 "MD", "RO", "RS", "SK", "UA", |
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81 } |
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82 ) |
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83 |
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84 // UnmarshalJSON ensures that the given string forms a valid |
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85 // two letter country code. |
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86 func (c *Country) UnmarshalJSON(data []byte) error { |
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87 var s string |
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88 if err := json.Unmarshal(data, &s); err != nil { |
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89 return err |
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90 } |
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91 u := strings.ToUpper(s) |
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92 for _, v := range validCountries { |
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93 if v == u { |
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94 *c = Country(v) |
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95 return nil |
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96 } |
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97 } |
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98 return fmt.Errorf("'%s' is not a valid country", s) |
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99 } |
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100 |
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101 // Value implements the driver.Valuer interface. |
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102 func (c Country) Value() (driver.Value, error) { |
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103 return string(c), nil |
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104 } |
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105 |
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106 // Scan implements the sql.Scanner interfaces. |
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107 func (c *Country) Scan(src interface{}) (err error) { |
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108 if s, ok := src.(string); ok { |
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109 *c = Country(s) |
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110 } else { |
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111 err = errNoString |
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112 } |
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113 return |
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114 } |
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115 |
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116 func (uc *UniqueCountries) UnmarshalJSON(data []byte) error { |
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117 var countries []Country |
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118 if err := json.Unmarshal(data, &countries); err != nil { |
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119 return err |
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120 } |
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121 unique := map[Country]struct{}{} |
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122 for _, c := range countries { |
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123 if _, found := unique[c]; found { |
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124 return fmt.Errorf("country '%s' is not unique", string(c)) |
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125 } |
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126 unique[c] = struct{}{} |
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127 } |
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128 *uc = countries |
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129 return nil |
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130 } |
2231
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131 |
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132 func (uc UniqueCountries) String() string { |
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133 var b strings.Builder |
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134 for i, c := range uc { |
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135 if i > 0 { |
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136 b.WriteString(", ") |
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137 } |
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138 b.WriteString(string(c)) |
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139 } |
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140 return b.String() |
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141 } |