Complex classes like Model 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 Model, and based on these observations, apply Extract Interface, too.
1 | <?php /** MicroModel */ |
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23 | abstract class Model extends FormModel implements IModel |
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24 | { |
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25 | /** @var string $primaryKey Primary key on table */ |
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26 | public static $primaryKey = 'id'; |
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27 | /** @var string $tableName Table name */ |
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28 | public static $tableName; |
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29 | |||
30 | /** @var boolean $_isNewRecord Is new record? */ |
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31 | protected $_isNewRecord = false; |
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32 | /** @var array $cacheRelations Cached loads relations */ |
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33 | protected $cacheRelations = []; |
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34 | |||
35 | |||
36 | /** |
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37 | * Constructor for model |
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38 | * |
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39 | * @access public |
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40 | * |
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41 | * @param boolean $new is new model? |
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42 | * |
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43 | * @result void |
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44 | * @throws Exception |
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45 | */ |
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46 | public function __construct($new = true) |
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56 | |||
57 | /** |
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58 | * Finder by primary key |
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59 | * |
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60 | * @access public |
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61 | * |
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62 | * @param int|string $value unique value |
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63 | * |
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64 | * @return mixed |
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65 | * @throws \Micro\base\Exception |
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66 | * @static |
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67 | */ |
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68 | public static function findByPk($value) |
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72 | |||
73 | /** |
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74 | * Find models by attributes |
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75 | * |
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76 | * @access public |
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77 | * |
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78 | * @param array $attributes attributes and data for search |
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79 | * @param bool $single single or more |
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80 | * |
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81 | * @return mixed |
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82 | * @throws \Micro\base\Exception |
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83 | */ |
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84 | public static function findByAttributes(array $attributes = [], $single = false) |
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94 | |||
95 | /** |
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96 | * Finder data in DB |
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97 | * |
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98 | * @access public |
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99 | * |
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100 | * @param IQuery $query query to search |
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101 | * @param boolean $single is single |
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102 | * |
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103 | * @return mixed One or more data |
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104 | * @throws \Micro\base\Exception |
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105 | * @static |
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106 | */ |
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107 | public static function finder(IQuery $query = null, $single = false) |
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116 | |||
117 | /** |
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118 | * Find by model attribute values |
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119 | * |
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120 | * @access public |
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121 | * |
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122 | * @param bool $single Is a single? |
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123 | * |
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124 | * @return mixed |
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125 | * @throws \Micro\base\Exception |
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126 | */ |
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127 | public function find($single = false) |
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131 | |||
132 | /** |
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133 | * Get attributes defined into model |
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134 | * |
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135 | * @access public |
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136 | * |
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137 | * @return array |
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138 | * @throws Exception |
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139 | */ |
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140 | public function getAttributes() |
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149 | |||
150 | /** |
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151 | * Get relation data or magic properties |
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152 | * |
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153 | * @access public |
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154 | * |
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155 | * @param string $name |
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156 | * |
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157 | * @return mixed |
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158 | * @throws Exception |
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159 | */ |
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160 | public function __get($name) |
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196 | |||
197 | /** |
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198 | * @inheritdoc |
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199 | */ |
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200 | public function relations() |
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204 | |||
205 | /** |
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206 | * Save changes |
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207 | * |
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208 | * @access public |
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209 | * |
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210 | * @param bool $validate Validated data? |
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211 | * |
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212 | * @return boolean |
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213 | * @throws Exception |
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214 | */ |
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215 | final public function save($validate = false) |
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233 | |||
234 | /** |
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235 | * Is new record? |
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236 | * |
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237 | * @access public |
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238 | * @return boolean |
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239 | */ |
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240 | public function isNewRecord() |
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244 | |||
245 | /** |
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246 | * Create changes |
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247 | * |
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248 | * @access public |
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249 | * @return boolean |
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250 | * @throws Exception |
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251 | */ |
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252 | final public function create() |
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279 | |||
280 | /** |
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281 | * @inheritdoc |
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282 | */ |
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283 | public function beforeCreate() |
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287 | |||
288 | /** |
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289 | * @inheritdoc |
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290 | */ |
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291 | public function beforeSave() |
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295 | |||
296 | /** |
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297 | * Merge local attributes and db attributes |
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298 | * |
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299 | * @access protected |
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300 | * |
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301 | * @return array |
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302 | * @throws \Micro\base\Exception |
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303 | */ |
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304 | protected function mergeAttributesDb() |
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323 | |||
324 | /** |
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325 | * Check attribute exists into table |
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326 | * |
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327 | * @access public |
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328 | * |
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329 | * @param string $name Attribute name |
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330 | * |
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331 | * @return boolean |
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332 | * @throws Exception |
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333 | */ |
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334 | public function checkAttributeExists($name) |
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350 | |||
351 | /** |
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352 | * @inheritdoc |
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353 | */ |
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354 | public function afterCreate() |
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357 | |||
358 | /** |
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359 | * @inheritdoc |
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360 | */ |
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361 | public function afterSave() |
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364 | |||
365 | /** |
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366 | * Update changes |
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367 | * |
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368 | * @access public |
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369 | * |
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370 | * @param string $where condition for search |
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371 | * |
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372 | * @throws Exception |
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373 | * @return boolean |
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374 | */ |
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375 | final public function update($where = null) |
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404 | |||
405 | /** |
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406 | * @inheritdoc |
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407 | */ |
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408 | public function beforeUpdate() |
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412 | |||
413 | /** |
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414 | * @inheritdoc |
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415 | */ |
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416 | public function afterUpdate() |
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419 | |||
420 | /** |
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421 | * Delete changes |
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422 | * |
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423 | * @access public |
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424 | * @return boolean |
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425 | * @throws Exception |
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426 | */ |
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427 | final public function delete() |
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452 | |||
453 | /** |
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454 | * @inheritdoc |
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455 | */ |
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456 | public function beforeDelete() |
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460 | |||
461 | /** |
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462 | * @inheritdoc |
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463 | */ |
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464 | public function afterDelete() |
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467 | } |
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468 |
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: