Complex classes like action_plugin_spatialhelper often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use action_plugin_spatialhelper, and based on these observations, apply Extract Interface, too.
1 | <?php |
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34 | class action_plugin_spatialhelper extends DokuWiki_Action_Plugin { |
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35 | |||
36 | /** |
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37 | * Register for events. |
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38 | * |
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39 | * @param Doku_Event_Handler $controller |
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40 | * DokuWiki's event controller object. Also available as global $EVENT_HANDLER |
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41 | */ |
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42 | public function register(Doku_Event_Handler $controller) { |
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70 | |||
71 | /** |
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72 | * Update the spatial index for the page. |
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73 | * |
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74 | * @param Doku_Event $event |
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75 | * event object by reference |
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76 | * @param object $param |
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77 | * the parameters passed to register_hook when this handler was registered |
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78 | */ |
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79 | public function handle_indexer_page_add(Doku_Event $event, $param) { |
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87 | |||
88 | /** |
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89 | * Update the spatial index, removing the page. |
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90 | * |
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91 | * @param Doku_Event $event |
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92 | * event object by reference |
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93 | * @param object $param |
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94 | * the parameters passed to register_hook when this handler was registered |
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95 | */ |
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96 | public function _removeFromIndex(Doku_Event & $event, $param) { |
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97 | // event data: |
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98 | // $data[0] – The raw arguments for io_saveFile as an array. Do not change file path. |
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99 | // $data[0][0] – the file path. |
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100 | // $data[0][1] – the content to be saved, and may be modified. |
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101 | // $data[1] – ns: The colon separated namespace path minus the trailing page name. (false if root ns) |
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102 | // $data[2] – page_name: The wiki page name. |
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103 | // $data[3] – rev: The page revision, false for current wiki pages. |
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104 | |||
105 | dbglog($event->data, "Event data in _removeFromIndex."); |
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106 | if (@file_exists($event->data [0] [0])) { |
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107 | // file not new |
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108 | if (!$event->data [0] [1]) { |
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109 | // file is empty, page is being deleted |
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110 | if (empty ($event->data [1])) { |
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111 | // root namespace |
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112 | $id = $event->data [2]; |
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113 | } else { |
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114 | $id = $event->data [1] . ":" . $event->data [2]; |
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115 | } |
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116 | $indexer = & plugin_load('helper', 'spatialhelper_index'); |
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117 | if ($indexer) { |
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118 | $indexer->deleteFromIndex($id); |
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119 | } |
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120 | } |
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121 | } |
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122 | } |
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123 | |||
124 | /** |
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125 | * Add a new SitemapItem object that points to the KML of public geocoded pages. |
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126 | * |
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127 | * @param Doku_Event $event |
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128 | * @param unknown $param |
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129 | */ |
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130 | public function handle_sitemap_generate_before(Doku_Event $event, $param) { |
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136 | |||
137 | /** |
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138 | * Create a spatial sitemap or attach the geo/kml map to the sitemap. |
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139 | * |
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140 | * @param Doku_Event $event |
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141 | * event object by reference, not used |
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142 | * @param mixed $param |
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143 | * parameter array, not used |
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144 | */ |
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145 | public function handle_sitemap_generate_after(Doku_Event $event, $param) { |
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146 | // $event→data['items']: Array of SitemapItem instances, the array of sitemap items that already contains all public pages of the wiki |
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147 | // $event→data['sitemap']: The path of the file the sitemap will be saved to. |
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148 | if ($helper = & plugin_load('helper', 'spatialhelper_sitemap')) { |
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149 | // dbglog($helper, "createSpatialSitemap loaded helper."); |
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150 | |||
151 | $kml = $helper->createKMLSitemap($this->getConf('media_kml')); |
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152 | $rss = $helper->createGeoRSSSitemap($this->getConf('media_georss')); |
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153 | |||
154 | if (!empty ($this->getConf('sitemap_namespaces'))) { |
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155 | $namespaces = array_map('trim',explode("\n",$this->getConf('sitemap_namespaces'))); |
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156 | foreach ($namespaces as $namespace) { |
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157 | $kmlN = $helper->createKMLSitemap($namespace . $this->getConf('media_kml')); |
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158 | $rssN = $helper->createGeoRSSSitemap($namespace . $this->getConf('media_georss')); |
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159 | dbglog( $kmlN && $rssN, "handle_sitemap_generate_after, created KML / GeoRSS sitemap in $namespace, succes: "); |
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160 | } |
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161 | } |
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162 | return $kml && $rss; |
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163 | } else { |
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164 | dbglog($helper, "createSpatialSitemap NOT loaded helper."); |
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165 | } |
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166 | } |
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167 | |||
168 | /** |
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169 | * trap findnearby action. |
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170 | * This addional handler is required as described at: https://www.dokuwiki.org/devel:event:tpl_act_unknown |
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171 | * |
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172 | * @param Doku_Event $event |
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173 | * event object by reference |
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174 | * @param mixed $param |
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175 | * not used |
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176 | */ |
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177 | public function handle_action_act_preprocess(Doku_Event $event, $param) { |
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183 | |||
184 | /** |
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185 | * handle findnearby action. |
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186 | * |
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187 | * @param Doku_Event $event |
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188 | * event object by reference |
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189 | * @param mixed $param |
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190 | * associative array with keys |
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191 | * 'format'=> HTML | JSON |
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192 | */ |
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193 | public function _findnearby(Doku_Event & $event, $param) { |
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225 | |||
226 | /** |
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227 | * Print seachresults as HTML lists. |
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228 | * |
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229 | * @param array $searchresults |
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230 | */ |
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231 | private function printJSON($searchresults) { |
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237 | |||
238 | /** |
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239 | * Print seachresults as HTML lists. |
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240 | * |
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241 | * @param array $searchresults |
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242 | * @param boolean $showMedia |
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243 | */ |
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244 | private function printHTML($searchresults, $showMedia = true) { |
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300 | |||
301 | /** |
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302 | * add media to spatial index. |
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303 | * |
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304 | * @param Doku_Event $event |
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305 | * event object by reference |
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306 | * @param unknown $param |
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307 | */ |
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308 | public function _handle_media_uploaded(Doku_Event & $event, $param) { |
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329 | |||
330 | /** |
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331 | * removes the media from the index. |
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332 | */ |
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333 | public function _handle_media_deleted(Doku_Event & $event, $param) { |
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347 | |||
348 | /** |
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349 | * add a link to the spatial sitemap files in the header. |
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350 | * |
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351 | * @param Doku_Event $event |
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352 | * the DokuWiki event. $event->data is a two-dimensional |
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353 | * array of all meta headers. The keys are meta, link and script. |
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354 | * @param unknown_type $param |
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355 | * |
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356 | * @see http://www.dokuwiki.org/devel:event:tpl_metaheader_output |
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357 | */ |
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358 | public function handle_metaheader_output(Doku_Event $event, $param) { |
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373 | |||
374 | /** |
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375 | * Calculate a new coordinate based on start, distance and bearing |
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376 | * |
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377 | * @param $start array |
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378 | * - start coordinate as decimal lat/lon pair |
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379 | * @param $dist float |
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380 | * - distance in kilometers |
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381 | * @param $brng float |
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382 | * - bearing in degrees (compass direction) |
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383 | */ |
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384 | private function _geo_destination($start, $dist, $brng) { |
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406 | } |
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407 |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.