Complex classes like Url 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 Url, and based on these observations, apply Extract Interface, too.
1 | <?php |
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49 | class Url extends Uri implements UriInterface, SerializablePropertyInterface |
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50 | { |
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51 | /** |
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52 | * Use PSR-7 method |
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53 | */ |
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54 | use Psr7Trait; |
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55 | /** |
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56 | * HTTP scheme |
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57 | * |
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58 | * @var string |
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59 | */ |
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60 | const SCHEME_HTTP = 'http'; |
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61 | /** |
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62 | * HTTPS schema |
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63 | * |
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64 | * @var string |
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65 | */ |
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66 | const SCHEME_HTTPS = 'https'; |
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67 | /** |
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68 | * Valid schemes |
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69 | * |
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70 | * @var array |
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71 | */ |
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72 | protected static $schemes = [self::SCHEME_HTTP => true, self::SCHEME_HTTPS => true]; |
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73 | /** |
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74 | * URL parts |
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75 | * |
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76 | * @var array |
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77 | */ |
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78 | protected $urlParts = null; |
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79 | |||
80 | /** |
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81 | * URL constructor |
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82 | * |
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83 | * @param string $url URL |
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84 | * @throws InvalidArgumentException If the URL is invalid |
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85 | */ |
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86 | 72 | public function __construct($url) |
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99 | |||
100 | /** |
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101 | * Unserialize the string representation of this property |
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102 | * |
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103 | * @param string $str Serialized property |
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104 | * @return SerializablePropertyInterface Property |
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105 | */ |
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106 | 1 | public static function unserialize($str) |
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110 | |||
111 | /** |
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112 | * Return the serialized URL |
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113 | * |
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114 | * @return string Serialized URL |
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115 | */ |
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116 | 38 | public function __toString() |
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120 | |||
121 | /** |
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122 | * Return the full serialized URL |
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123 | * |
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124 | * @return string Full URL |
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125 | */ |
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126 | 38 | public function getUrl() |
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130 | |||
131 | /** |
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132 | * Return the a complete serialized URL |
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133 | * |
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134 | * @param array $override Override components |
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135 | * @return string Serialized URL |
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136 | */ |
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137 | 42 | protected function getUrlInternal(array &$override = []) |
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209 | |||
210 | /** |
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211 | * Return the URL user |
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212 | * |
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213 | * @return string|NULL URL user |
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214 | */ |
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215 | 14 | public function getUser() |
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219 | |||
220 | /** |
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221 | * Return the URL password |
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222 | * |
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223 | * @return string|NULL URL password |
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224 | */ |
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225 | 14 | public function getPassword() |
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229 | |||
230 | /** |
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231 | * Return the URL query parameters as list |
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232 | * |
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233 | * @return array URL query parameters |
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234 | */ |
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235 | 2 | public function getQueryParams() |
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243 | |||
244 | /** |
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245 | * Set the URL host |
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246 | * |
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247 | * @param string $host URL host |
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248 | * @return Url New URL |
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249 | * @throws InvalidArgumentException If the URL host is invalid |
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250 | */ |
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251 | 2 | public function setHost($host) |
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267 | |||
268 | /** |
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269 | * Set the URL port |
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270 | * |
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271 | * @param int|null $port URL port |
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272 | * @return Url New URL |
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273 | * @throws InvalidArgumentException If the URL port is invalid |
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274 | */ |
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275 | 2 | public function setPort($port) |
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289 | |||
290 | /** |
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291 | * Set the URL user |
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292 | * |
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293 | * @param string|NULL $user URL user |
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294 | * @return Url New URL |
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295 | */ |
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296 | 2 | public function setUser($user) |
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302 | |||
303 | /** |
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304 | * Set the URL password |
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305 | * |
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306 | * @param string $pass URL password |
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307 | * @return Url New URL |
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308 | */ |
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309 | 2 | public function setPassword($pass) |
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315 | |||
316 | /** |
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317 | * Set the URL query |
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318 | * |
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319 | * @param string $query URL query |
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320 | * @return Url New URL |
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321 | */ |
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322 | 2 | public function setQuery($query) |
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328 | |||
329 | /** |
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330 | * Set the URL query parameters |
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331 | * |
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332 | * @param array $query URL query parameters |
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333 | * @return Url New URL |
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334 | */ |
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335 | 1 | public function setQueryParams(array $query) |
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341 | |||
342 | /** |
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343 | * Set the URL fragment |
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344 | * |
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345 | * @param string $fragment URL fragment |
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346 | * @return Url New URL |
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347 | */ |
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348 | 2 | public function setFragment($fragment) |
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354 | |||
355 | /** |
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356 | * Test whether this URL is remote |
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357 | * |
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358 | * @return bool Remote URL |
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359 | */ |
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360 | 1 | public function isRemote() |
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364 | |||
365 | /** |
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366 | * Return whether this URL is absolute |
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367 | * |
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368 | * @return bool Absolute URL |
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369 | */ |
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370 | 64 | public function isAbsolute() |
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374 | |||
375 | /** |
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376 | * Test whether this URL belongs to the local Apparat instance |
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377 | * |
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378 | * @return bool URL belongs to the local Apparat instance |
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379 | */ |
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380 | 30 | public function isAbsoluteLocal() |
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394 | |||
395 | /** |
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396 | * Set the URL path |
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397 | * |
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398 | * @param string $path URL path |
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399 | * @return Url New URL |
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400 | */ |
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401 | 32 | public function setPath($path) |
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409 | |||
410 | /** |
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411 | * Set the URL scheme |
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412 | * |
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413 | * @param string $scheme URL scheme |
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414 | * @return Url New URL |
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415 | * @throws InvalidArgumentException If the URL scheme is invalid |
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416 | */ |
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417 | 32 | public function setScheme($scheme) |
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431 | |||
432 | /** |
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433 | * Test if this URL matches all available parts of a given URL |
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434 | * |
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435 | * @param Url $url Comparison URL |
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436 | * @return bool This URL matches all available parts of the given URL |
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437 | */ |
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438 | 10 | public function matches(Url $url) |
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491 | |||
492 | /** |
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493 | * Serialize the property |
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494 | * |
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495 | * @return mixed Property serialization |
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496 | */ |
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497 | 2 | public function serialize() |
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501 | } |
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502 |