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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| 18 | class WebDAVAdapter extends AbstractAdapter |
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| 19 | { |
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| 20 | use StreamedReadingTrait; |
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| 21 | use StreamedCopyTrait { |
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| 22 | StreamedCopyTrait::copy as streamedCopy; |
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| 23 | } |
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| 24 | use NotSupportingVisibilityTrait; |
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| 25 | |||
| 26 | protected static $metadataFields = [ |
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| 27 | '{DAV:}displayname', |
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| 28 | '{DAV:}getcontentlength', |
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| 29 | '{DAV:}getcontenttype', |
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| 30 | '{DAV:}getlastmodified', |
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| 31 | '{DAV:}iscollection', |
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| 32 | '{DAV:}resourcetype', |
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| 33 | ]; |
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| 34 | |||
| 35 | /** |
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| 36 | * @var array |
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| 37 | */ |
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| 38 | protected static $resultMap = [ |
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| 39 | '{DAV:}getcontentlength' => 'size', |
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| 40 | '{DAV:}getcontenttype' => 'mimetype', |
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| 41 | 'content-length' => 'size', |
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| 42 | 'content-type' => 'mimetype', |
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| 43 | ]; |
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| 44 | |||
| 45 | /** |
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| 46 | * @var Client |
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| 47 | */ |
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| 48 | protected $client; |
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| 49 | |||
| 50 | /** |
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| 51 | * @var bool |
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| 52 | */ |
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| 53 | protected $useStreamedCopy = true; |
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| 54 | |||
| 55 | /** |
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| 56 | * Constructor. |
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| 57 | * |
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| 58 | * @param Client $client |
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| 59 | * @param string $prefix |
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| 60 | * @param bool $useStreamedCopy |
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| 61 | */ |
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| 62 | public function __construct(Client $client, $prefix = null, $useStreamedCopy = true) |
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| 68 | |||
| 69 | /** |
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| 70 | * url encode a path |
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| 71 | * |
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| 72 | * @param string $path |
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| 73 | * |
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| 74 | * @return string |
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| 75 | */ |
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| 76 | protected function encodePath($path) |
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| 84 | |||
| 85 | /** |
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| 86 | * {@inheritdoc} |
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| 87 | */ |
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| 88 | public function getMetadata($path) |
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| 106 | |||
| 107 | /** |
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| 108 | * {@inheritdoc} |
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| 109 | */ |
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| 110 | public function has($path) |
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| 114 | |||
| 115 | /** |
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| 116 | * {@inheritdoc} |
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| 117 | */ |
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| 118 | public function read($path) |
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| 140 | |||
| 141 | /** |
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| 142 | * {@inheritdoc} |
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| 143 | */ |
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| 144 | public function write($path, $contents, Config $config) |
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| 165 | |||
| 166 | /** |
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| 167 | * {@inheritdoc} |
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| 168 | */ |
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| 169 | public function writeStream($path, $resource, Config $config) |
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| 173 | |||
| 174 | /** |
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| 175 | * {@inheritdoc} |
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| 176 | */ |
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| 177 | public function update($path, $contents, Config $config) |
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| 181 | |||
| 182 | /** |
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| 183 | * {@inheritdoc} |
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| 184 | */ |
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| 185 | public function updateStream($path, $resource, Config $config) |
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| 189 | |||
| 190 | /** |
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| 191 | * {@inheritdoc} |
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| 192 | */ |
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| 193 | public function rename($path, $newpath) |
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| 212 | |||
| 213 | /** |
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| 214 | * {@inheritdoc} |
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| 215 | */ |
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| 216 | public function copy($path, $newpath) |
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| 224 | |||
| 225 | /** |
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| 226 | * {@inheritdoc} |
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| 227 | */ |
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| 228 | public function delete($path) |
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| 241 | |||
| 242 | /** |
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| 243 | * {@inheritdoc} |
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| 244 | */ |
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| 245 | public function createDir($path, Config $config) |
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| 273 | |||
| 274 | /** |
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| 275 | * {@inheritdoc} |
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| 276 | */ |
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| 277 | public function deleteDir($dirname) |
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| 281 | |||
| 282 | /** |
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| 283 | * {@inheritdoc} |
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| 284 | */ |
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| 285 | public function listContents($directory = '', $recursive = false) |
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| 305 | |||
| 306 | /** |
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| 307 | * {@inheritdoc} |
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| 308 | */ |
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| 309 | public function getSize($path) |
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| 313 | |||
| 314 | /** |
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| 315 | * {@inheritdoc} |
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| 316 | */ |
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| 317 | public function getTimestamp($path) |
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| 321 | |||
| 322 | /** |
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| 323 | * {@inheritdoc} |
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| 324 | */ |
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| 325 | public function getMimetype($path) |
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| 329 | |||
| 330 | /** |
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| 331 | * @return boolean |
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| 332 | */ |
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| 333 | public function getUseStreamedCopy() |
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| 337 | |||
| 338 | /** |
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| 339 | * @param boolean $useStreamedCopy |
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| 340 | */ |
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| 341 | public function setUseStreamedCopy($useStreamedCopy) |
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| 345 | |||
| 346 | /** |
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| 347 | * Copy a file through WebDav COPY method. |
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| 348 | * |
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| 349 | * @param string $path |
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| 350 | * @param string $newPath |
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| 351 | * |
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| 352 | * @return bool |
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| 353 | */ |
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| 354 | protected function nativeCopy($path, $newPath) |
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| 378 | |||
| 379 | /** |
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| 380 | * Normalise a WebDAV repsonse object. |
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| 381 | * |
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| 382 | * @param array $object |
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| 383 | * @param string $path |
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| 384 | * |
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| 385 | * @return array |
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| 386 | */ |
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| 387 | protected function normalizeObject(array $object, $path) |
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| 404 | |||
| 405 | /** |
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| 406 | * @param array $object |
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| 407 | * @return bool |
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| 408 | */ |
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| 409 | protected function isDirectory(array $object) |
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| 419 | } |
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| 420 |
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: