Complex classes like API 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 API, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 17 | class API |
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| 18 | { |
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| 19 | protected static $defaultClientOptions = array( |
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| 20 | 'version' => ExchangeWebServices::VERSION_2010 |
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| 21 | ); |
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| 22 | |||
| 23 | 23 | public function __construct(ExchangeWebServices $client = null) |
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| 29 | |||
| 30 | /** |
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| 31 | * @return Type\EmailAddressType |
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| 32 | */ |
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| 33 | 15 | public function getPrimarySmtpMailbox() |
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| 37 | |||
| 38 | private $fieldUris = array(); |
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| 39 | |||
| 40 | /** |
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| 41 | * Storing the API client |
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| 42 | * @var ExchangeWebServices |
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| 43 | */ |
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| 44 | private $client; |
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| 45 | |||
| 46 | 4 | public function setupFieldUris() |
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| 71 | |||
| 72 | 4 | public function getFieldUriByName($fieldName, $preference = 'item') |
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| 95 | |||
| 96 | /** |
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| 97 | * Get a calendar item |
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| 98 | * |
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| 99 | * @param string $name |
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| 100 | * @return CalendarAPI |
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| 101 | */ |
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| 102 | 6 | public function getCalendar($name = null) |
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| 110 | |||
| 111 | /** |
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| 112 | * @param string $folderName |
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| 113 | * @return MailAPI |
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| 114 | */ |
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| 115 | 8 | public function getMailbox($folderName = null) |
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| 123 | |||
| 124 | /** |
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| 125 | * Set the API client |
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| 126 | * |
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| 127 | * @param ExchangeWebServices $client |
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| 128 | * @return $this |
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| 129 | */ |
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| 130 | 23 | public function setClient($client) |
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| 135 | |||
| 136 | /** |
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| 137 | * Get the API client |
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| 138 | * |
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| 139 | * @return ExchangeWebServices |
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| 140 | */ |
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| 141 | 22 | public function getClient() |
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| 145 | |||
| 146 | /** |
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| 147 | * Instantiate and set a client (ExchangeWebServices) based on the parameters given |
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| 148 | * |
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| 149 | * @deprecated Since 0.6.3 |
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| 150 | * @param $server |
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| 151 | * @param $username |
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| 152 | * @param $password |
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| 153 | * @param array $options |
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| 154 | * @return $this |
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| 155 | */ |
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| 156 | public function buildClient( |
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| 169 | |||
| 170 | 9 | public static function withUsernameAndPassword($server, $username, $password, $options = [ ]) |
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| 179 | |||
| 180 | 1 | public static function withCallbackToken($server, $token, $options = [ ]) |
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| 188 | |||
| 189 | public function getPrimarySmptEmailAddress() |
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| 197 | |||
| 198 | public function setPrimarySmtpEmailAddress($emailAddress) |
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| 204 | |||
| 205 | /** |
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| 206 | * Create items through the API client |
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| 207 | * |
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| 208 | * @param $items |
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| 209 | * @param array $options |
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| 210 | * @return API\CreateItemResponseType |
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| 211 | */ |
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| 212 | 9 | public function createItems($items, $options = array()) |
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| 229 | |||
| 230 | 2 | public function updateItems($items, $options = array()) |
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| 244 | |||
| 245 | 2 | protected function buildUpdateItemChanges($itemType, $uriType, $changes) |
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| 261 | |||
| 262 | public function createFolders($names, Type\FolderIdType $parentFolder, $options = array()) |
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| 285 | |||
| 286 | public function moveItem(Type\ItemIdType $itemId, Type\FolderIdType $folderId, $options = array()) |
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| 297 | |||
| 298 | /** |
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| 299 | * @param $items Type\ItemIdType|Type\ItemIdType[] |
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| 300 | * @param array $options |
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| 301 | * @return bool |
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| 302 | */ |
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| 303 | 8 | public function deleteItems($items, $options = array()) |
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| 333 | |||
| 334 | /** |
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| 335 | * @param $identifier |
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| 336 | * @return Type\BaseFolderType |
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| 337 | */ |
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| 338 | 15 | public function getFolder($identifier) |
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| 351 | |||
| 352 | /** |
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| 353 | * Get a folder by it's distinguishedId |
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| 354 | * |
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| 355 | * @param string $distinguishedId |
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| 356 | * @return Type\BaseFolderType |
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| 357 | */ |
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| 358 | 15 | public function getFolderByDistinguishedId($distinguishedId) |
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| 367 | |||
| 368 | /** |
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| 369 | * @param $folderId |
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| 370 | * @return Type\BaseFolderType |
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| 371 | */ |
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| 372 | 4 | public function getFolderByFolderId($folderId) |
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| 378 | |||
| 379 | /** |
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| 380 | * @param $folderName |
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| 381 | * @param string|Type\FolderIdType $parentFolderId |
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| 382 | * @param array $options |
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| 383 | * @return bool|Type\BaseFolderType |
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| 384 | */ |
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| 385 | 14 | public function getFolderByDisplayName($folderName, $parentFolderId = 'root', $options = array()) |
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| 417 | |||
| 418 | /** |
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| 419 | * @param $itemId array|Type\ItemIdType |
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| 420 | * @param array $options |
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| 421 | * @return Type |
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| 422 | */ |
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| 423 | 1 | public function getItem($itemId, $options = array()) |
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| 438 | |||
| 439 | /** |
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| 440 | * Get a list of sync changes on a folder |
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| 441 | * |
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| 442 | * @param Type\FolderIdType $folderId |
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| 443 | * @param null $syncState |
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| 444 | * @param array $options |
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| 445 | * @return mixed |
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| 446 | */ |
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| 447 | 2 | public function listItemChanges($folderId, $syncState = null, $options = array()) |
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| 467 | } |
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| 468 |
If you implement
__calland you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class.This is often the case, when
__callis implemented by a parent class and only the child class knows which methods exist: