Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like HLModel 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 HLModel, and based on these observations, apply Extract Interface, too.
1 | <?php |
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11 | class HLModel extends ArrayableModel |
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12 | { |
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13 | use ModelEventsTrait; |
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14 | |||
15 | /** |
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16 | * Bitrix entity object. |
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17 | * |
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18 | * @var object |
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19 | */ |
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20 | public static $bxObject; |
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21 | |||
22 | protected static $tableName; |
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23 | |||
24 | |||
25 | /** |
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26 | * Have fields been already fetched from DB? |
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27 | * |
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28 | * @var bool |
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29 | */ |
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30 | protected $fieldsAreFetched = false; |
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31 | |||
32 | /** |
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33 | * Constructor. |
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34 | * |
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35 | * @param $id |
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36 | * @param $fields |
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37 | */ |
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38 | public function __construct($id = null, $fields = null) |
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46 | |||
47 | static public function tableName() |
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51 | |||
52 | /** |
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53 | * Get all model attributes from cache or database. |
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54 | * |
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55 | * @return array |
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56 | */ |
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57 | public function get() |
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63 | |||
64 | /** |
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65 | * Load model fields from database if they are not loaded yet. |
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66 | * |
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67 | * @return $this |
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68 | */ |
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69 | public function load() |
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77 | |||
78 | /** |
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79 | * Get model fields from cache or database. |
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80 | * |
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81 | * @return array |
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82 | */ |
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83 | public function getFields() |
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91 | |||
92 | /** |
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93 | * Refresh model from database and place data to $this->fields. |
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94 | * |
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95 | * @return array |
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96 | */ |
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97 | public function refresh() |
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101 | |||
102 | /** |
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103 | * Refresh model fields and save them to a class field. |
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104 | * |
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105 | * @return array |
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106 | */ |
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107 | View Code Duplication | public function refreshFields() |
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119 | |||
120 | /** |
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121 | * Fill model fields if they are already known. |
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122 | * Saves DB queries. |
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123 | * |
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124 | * @param array $fields |
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125 | * |
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126 | * @return void |
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127 | */ |
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128 | View Code Duplication | public function fill($fields) |
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146 | |||
147 | |||
148 | /** |
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149 | * Create new item in database. |
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150 | * |
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151 | * @param $fields |
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152 | * |
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153 | * @throws Exception |
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154 | * |
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155 | * @return static|bool |
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156 | */ |
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157 | public static function create($fields) |
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161 | |||
162 | /** |
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163 | * Internal part of create to avoid problems with static and inheritance |
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164 | * |
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165 | * @param $fields |
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166 | * |
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167 | * @throws Exception |
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168 | * |
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169 | * @return static|bool |
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170 | */ |
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171 | protected static function internalCreate($fields) |
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190 | |||
191 | /** |
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192 | * Get count of items that match $filter. |
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193 | * |
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194 | * @param array $filter |
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195 | * |
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196 | * @return int |
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197 | */ |
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198 | public static function count(array $filter = []) |
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202 | |||
203 | /** |
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204 | * Get item by its id. |
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205 | * |
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206 | * @param int $id |
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207 | * |
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208 | * @return static|bool |
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209 | */ |
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210 | public static function find($id) |
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214 | |||
215 | /** |
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216 | * Delete model. |
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217 | * |
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218 | * @return bool |
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219 | */ |
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220 | View Code Duplication | public function delete() |
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232 | |||
233 | /** |
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234 | * Update model. |
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235 | * |
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236 | * @param array $fields |
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237 | * |
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238 | * @return bool |
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239 | */ |
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240 | View Code Duplication | public function update(array $fields = []) |
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250 | |||
251 | /** |
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252 | * Save model to database. |
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253 | * |
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254 | * @param array $selectedFields save only these fields instead of all. |
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255 | * |
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256 | * @return bool |
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257 | */ |
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258 | public function save($selectedFields = []) |
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274 | |||
275 | /** |
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276 | * Create an array of fields that will be saved to database. |
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277 | * |
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278 | * @param $selectedFields |
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279 | * |
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280 | * @return array |
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281 | */ |
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282 | View Code Duplication | protected function normalizeFieldsForSave($selectedFields) |
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297 | |||
298 | /** |
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299 | * Determine whether the field should be stopped from passing to "update". |
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300 | * |
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301 | * @param string $field |
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302 | * @param mixed $value |
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303 | * @param array $selectedFields |
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304 | * |
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305 | * @return bool |
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306 | */ |
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307 | protected function fieldShouldNotBeSaved($field, $value, $selectedFields) |
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317 | |||
318 | /** |
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319 | * Instantiate bitrix entity object. |
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320 | * |
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321 | * @throws Exception |
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322 | * |
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323 | * @return object |
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324 | */ |
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325 | public static function instantiateObject() |
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335 | |||
336 | /** |
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337 | * Destroy bitrix entity object. |
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338 | * |
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339 | * @return void |
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340 | */ |
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341 | public static function destroyObject() |
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345 | |||
346 | /** |
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347 | * Instantiate a query object for the model. |
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348 | * |
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349 | * @throws Exception |
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350 | * |
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351 | * @return BaseQuery |
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352 | */ |
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353 | public static function query() |
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357 | |||
358 | /** |
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359 | * Set current model id. |
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360 | * |
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361 | * @param $id |
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362 | */ |
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363 | protected function setId($id) |
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368 | |||
369 | /** |
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370 | * Handle dynamic static method calls into a new query. |
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371 | * |
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372 | * @param string $method |
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373 | * @param array $parameters |
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374 | * @return mixed |
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375 | */ |
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376 | public static function __callStatic($method, $parameters) |
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380 | } |