Complex classes like WebDAVAdapter 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 WebDAVAdapter, and based on these observations, apply Extract Interface, too.
1 | <?php |
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17 | class WebDAVAdapter extends AbstractAdapter |
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18 | { |
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19 | use StreamedReadingTrait; |
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20 | use StreamedCopyTrait { |
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21 | StreamedCopyTrait::copy as streamedCopy; |
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22 | } |
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23 | use NotSupportingVisibilityTrait; |
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24 | |||
25 | private static $metadataFields = [ |
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26 | '{DAV:}displayname', |
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27 | '{DAV:}getcontentlength', |
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28 | '{DAV:}getcontenttype', |
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29 | '{DAV:}getlastmodified', |
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30 | '{DAV:}iscollection', |
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31 | ]; |
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32 | |||
33 | /** |
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34 | * @var array |
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35 | */ |
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36 | protected static $resultMap = [ |
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37 | '{DAV:}getcontentlength' => 'size', |
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38 | '{DAV:}getcontenttype' => 'mimetype', |
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39 | 'content-length' => 'size', |
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40 | 'content-type' => 'mimetype', |
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41 | ]; |
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42 | |||
43 | /** |
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44 | * @var Client |
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45 | */ |
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46 | protected $client; |
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47 | |||
48 | /** |
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49 | * @var bool |
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50 | */ |
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51 | protected $useStreamedCopy = true; |
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52 | |||
53 | /** |
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54 | * Constructor. |
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55 | * |
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56 | * @param Client $client |
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57 | * @param string $prefix |
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58 | * @param bool $useStreamedCopy |
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59 | */ |
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60 | public function __construct(Client $client, $prefix = null, $useStreamedCopy = true) |
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66 | |||
67 | /** |
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68 | * url encode a path |
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69 | * |
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70 | * @param string $path |
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71 | * |
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72 | * @return string |
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73 | */ |
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74 | protected function encodePath($path) |
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82 | |||
83 | /** |
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84 | * {@inheritdoc} |
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85 | */ |
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86 | public function getMetadata($path) |
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100 | |||
101 | /** |
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102 | * {@inheritdoc} |
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103 | */ |
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104 | public function has($path) |
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108 | |||
109 | /** |
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110 | * {@inheritdoc} |
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111 | */ |
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112 | public function read($path) |
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134 | |||
135 | /** |
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136 | * {@inheritdoc} |
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137 | */ |
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138 | public function write($path, $contents, Config $config) |
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159 | |||
160 | /** |
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161 | * {@inheritdoc} |
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162 | */ |
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163 | public function writeStream($path, $resource, Config $config) |
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167 | |||
168 | /** |
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169 | * {@inheritdoc} |
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170 | */ |
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171 | public function update($path, $contents, Config $config) |
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175 | |||
176 | /** |
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177 | * {@inheritdoc} |
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178 | */ |
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179 | public function updateStream($path, $resource, Config $config) |
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183 | |||
184 | /** |
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185 | * {@inheritdoc} |
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186 | */ |
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187 | public function rename($path, $newpath) |
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206 | |||
207 | /** |
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208 | * {@inheritdoc} |
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209 | */ |
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210 | public function copy($path, $newpath) |
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218 | |||
219 | /** |
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220 | * {@inheritdoc} |
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221 | */ |
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222 | public function delete($path) |
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234 | |||
235 | /** |
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236 | * {@inheritdoc} |
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237 | */ |
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238 | public function createDir($path, Config $config) |
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266 | |||
267 | /** |
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268 | * {@inheritdoc} |
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269 | */ |
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270 | public function deleteDir($dirname) |
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274 | |||
275 | /** |
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276 | * {@inheritdoc} |
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277 | */ |
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278 | public function listContents($directory = '', $recursive = false) |
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298 | |||
299 | /** |
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300 | * {@inheritdoc} |
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301 | */ |
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302 | public function getSize($path) |
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306 | |||
307 | /** |
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308 | * {@inheritdoc} |
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309 | */ |
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310 | public function getTimestamp($path) |
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314 | |||
315 | /** |
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316 | * {@inheritdoc} |
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317 | */ |
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318 | public function getMimetype($path) |
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322 | |||
323 | /** |
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324 | * @return boolean |
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325 | */ |
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326 | public function getUseStreamedCopy() |
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330 | |||
331 | /** |
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332 | * @param boolean $useStreamedCopy |
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333 | */ |
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334 | public function setUseStreamedCopy($useStreamedCopy) |
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338 | |||
339 | /** |
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340 | * Copy a file through WebDav COPY method. |
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341 | * |
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342 | * @param string $path |
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343 | * @param string $newPath |
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344 | * |
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345 | * @return bool |
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346 | */ |
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347 | protected function nativeCopy($path, $newPath) |
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371 | |||
372 | /** |
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373 | * Normalise a WebDAV repsonse object. |
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374 | * |
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375 | * @param array $object |
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376 | * @param string $path |
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377 | * |
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378 | * @return array |
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379 | */ |
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380 | protected function normalizeObject(array $object, $path) |
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397 | |||
398 | private function isDirectory(array $object) |
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402 | } |
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403 |
If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: