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 DoctrineWriter 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 DoctrineWriter, and based on these observations, apply Extract Interface, too.
1 | <?php |
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20 | class DoctrineWriter implements Writer, Writer\FlushableWriter |
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21 | { |
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22 | /** |
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23 | * Doctrine object manager |
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24 | * |
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25 | * @var ObjectManager |
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26 | */ |
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27 | protected $objectManager; |
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28 | |||
29 | /** |
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30 | * Fully qualified model name |
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31 | * |
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32 | * @var string |
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33 | */ |
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34 | protected $objectName; |
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35 | |||
36 | /** |
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37 | * Doctrine object repository |
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38 | * |
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39 | * @var ObjectRepository |
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40 | */ |
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41 | protected $objectRepository; |
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42 | |||
43 | /** |
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44 | * @var ClassMetadata |
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45 | */ |
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46 | protected $objectMetadata; |
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47 | |||
48 | /** |
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49 | * Original Doctrine logger |
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50 | * |
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51 | * @var SQLLogger |
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52 | */ |
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53 | protected $originalLogger; |
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54 | |||
55 | /** |
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56 | * Whether to truncate the table first |
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57 | * |
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58 | * @var boolean |
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59 | */ |
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60 | protected $truncate = true; |
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61 | |||
62 | /** |
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63 | * List of fields used to lookup an object |
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64 | * |
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65 | * @var array |
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66 | */ |
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67 | protected $lookupFields = []; |
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68 | |||
69 | /** |
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70 | * Method used for looking up the item |
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71 | * |
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72 | * @var array |
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73 | */ |
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74 | protected $lookupMethod; |
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75 | |||
76 | /** |
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77 | * Constructor |
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78 | * |
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79 | * @param ObjectManager $objectManager |
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80 | * @param string $objectName |
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81 | * @param string|array $index Field or fields to find current entities by |
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82 | * @param string $lookupMethod Method used for looking up the item |
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83 | */ |
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84 | 6 | public function __construct( |
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115 | |||
116 | /** |
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117 | * @return boolean |
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118 | */ |
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119 | public function getTruncate() |
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123 | |||
124 | /** |
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125 | * Set whether to truncate the table first |
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126 | * |
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127 | * @param boolean $truncate |
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128 | * |
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129 | * @return $this |
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130 | */ |
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131 | public function setTruncate($truncate) |
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137 | |||
138 | /** |
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139 | * Disable truncation |
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140 | * |
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141 | * @return $this |
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142 | */ |
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143 | public function disableTruncate() |
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149 | |||
150 | /** |
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151 | * Disable Doctrine logging |
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152 | * |
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153 | * @return $this |
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154 | */ |
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155 | 1 | public function prepare() |
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163 | |||
164 | /** |
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165 | * Re-enable Doctrine logging |
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166 | */ |
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167 | 1 | public function finish() |
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172 | |||
173 | /** |
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174 | * {@inheritdoc} |
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175 | */ |
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176 | 4 | public function writeItem(array $item) |
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185 | |||
186 | /** |
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187 | * Flush and clear the object manager |
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188 | */ |
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189 | 1 | public function flush() |
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194 | |||
195 | /** |
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196 | * Return a new instance of the object |
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197 | * |
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198 | * @return object |
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199 | */ |
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200 | 4 | protected function getNewInstance() |
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210 | |||
211 | /** |
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212 | * Call a setter of the object |
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213 | * |
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214 | * @param object $object |
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215 | * @param mixed $value |
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216 | * @param string $setter |
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217 | */ |
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218 | 4 | protected function setValue($object, $value, $setter) |
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224 | |||
225 | /** |
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226 | * @param array $item |
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227 | * @param object $object |
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228 | */ |
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229 | 4 | protected function updateObject(array $item, $object) |
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253 | |||
254 | /** |
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255 | * Add the associated objects in case the item have for persist its relation |
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256 | * |
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257 | * @param array $item |
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258 | * @param object $object |
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259 | */ |
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260 | 4 | protected function loadAssociationObjectsToObject(array $item, $object) |
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277 | |||
278 | /** |
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279 | * Truncate the database table for this writer |
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280 | */ |
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281 | 1 | protected function truncateTable() |
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292 | |||
293 | /** |
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294 | * Disable Doctrine logging |
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295 | */ |
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296 | 1 | View Code Duplication | protected function disableLogging() |
305 | |||
306 | /** |
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307 | * Re-enable Doctrine logging |
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308 | */ |
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309 | 1 | View Code Duplication | protected function reEnableLogging() |
317 | |||
318 | /** |
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319 | * @param array $item |
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320 | * |
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321 | * @return object |
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322 | */ |
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323 | 4 | protected function findOrCreateItem(array $item) |
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347 | |||
348 | 6 | protected function ensureSupportedObjectManager(ObjectManager $objectManager) |
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356 | } |
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357 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..