Complex classes like DoctrineAdapter 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 DoctrineAdapter, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 22 | class DoctrineAdapter extends AbstractAdapter implements AdapterInterface |
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| 23 | { |
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| 24 | /** |
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| 25 | * @var Doctrine\ORM\EntityManager. |
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| 26 | */ |
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| 27 | public $em; |
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| 28 | |||
| 29 | /** |
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| 30 | * @var int. |
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| 31 | */ |
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| 32 | public $priority = 0; |
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| 33 | |||
| 34 | /** |
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| 35 | * Does a queue already exist? |
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| 36 | * |
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| 37 | * Throws an exception if the adapter cannot determine if a queue exists. |
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| 38 | * use isSupported('isExists') to determine if an adapter can test for |
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| 39 | * queue existance. |
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| 40 | * |
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| 41 | * @param string $name |
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| 42 | * |
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| 43 | * @return bool |
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| 44 | * |
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| 45 | * @throws ZendQueue\Exception |
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| 46 | */ |
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| 47 | public function isExists($name) |
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| 57 | |||
| 58 | /** |
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| 59 | * Create a new queue. |
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| 60 | * |
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| 61 | * Visibility timeout is how long a message is left in the queue "invisible" |
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| 62 | * to other readers. If the message is acknowleged (deleted) before the |
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| 63 | * timeout, then the message is deleted. However, if the timeout expires |
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| 64 | * then the message will be made available to other queue readers. |
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| 65 | * |
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| 66 | * @param string $name Queue name |
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| 67 | * @param int $timeout Default visibility timeout |
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| 68 | * |
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| 69 | * @return bool |
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| 70 | * |
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| 71 | * @throws ZendQueue\Exception - database error |
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| 72 | */ |
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| 73 | public function create($name, $timeout = null) |
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| 89 | |||
| 90 | /** |
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| 91 | * Delete a queue and all of it's messages. |
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| 92 | * |
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| 93 | * Returns false if the queue is not found, true if the queue exists |
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| 94 | * |
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| 95 | * @param string $name Queue name |
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| 96 | * |
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| 97 | * @return bool |
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| 98 | * |
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| 99 | * @throws ZendQueue\Exception |
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| 100 | */ |
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| 101 | public function delete($name) |
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| 125 | |||
| 126 | /* |
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| 127 | * Get an array of all available queues |
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| 128 | * |
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| 129 | * Not all adapters support getQueues(), use isSupported('getQueues') |
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| 130 | * to determine if the adapter supports this feature. |
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| 131 | * |
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| 132 | * @return array |
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| 133 | */ |
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| 134 | public function getQueues() |
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| 147 | |||
| 148 | /** |
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| 149 | * Return the approximate number of messages in the queue. |
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| 150 | * |
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| 151 | * @param ZendQueue\Queue $queue |
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| 152 | * |
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| 153 | * @return int |
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| 154 | * |
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| 155 | * @throws ZendQueue\Exception |
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| 156 | */ |
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| 157 | public function count(Queue $queue = null) |
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| 177 | |||
| 178 | /** |
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| 179 | * Send a message to the queue. |
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| 180 | * |
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| 181 | * @param string $message Message to send to the active queue |
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| 182 | * @param ZendQueue\Queue $queue |
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| 183 | * |
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| 184 | * @return ZendQueue\Message |
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| 185 | * |
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| 186 | * @throws ZendQueue\Exception |
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| 187 | */ |
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| 188 | public function send($message, Queue $queue = null) |
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| 219 | |||
| 220 | /** |
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| 221 | * Get messages in the queue. |
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| 222 | * |
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| 223 | * @param int $maxMessages Maximum number of messages to return |
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| 224 | * @param int $timeout Visibility timeout for these messages |
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| 225 | * @param ZendQueue\Queue $queue |
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| 226 | * |
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| 227 | * @return ZendQueue\MessageIterator |
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| 228 | * |
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| 229 | * @throws ZendQueue\Exception Database error |
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| 230 | */ |
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| 231 | public function receive($maxMessages = null, $timeout = null, Queue $queue = null) |
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| 271 | |||
| 272 | /** |
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| 273 | * Delete a message from the queue. |
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| 274 | * |
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| 275 | * Returns true if the message is deleted, false if the deletion is |
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| 276 | * unsuccessful. |
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| 277 | * |
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| 278 | * @param ZendQueue\Message $message |
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| 279 | * |
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| 280 | * @return bool |
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| 281 | * |
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| 282 | * @throws ZendQueue\Exception - database error |
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| 283 | */ |
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| 284 | public function deleteMessage(Message $message) |
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| 297 | |||
| 298 | /** |
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| 299 | * Return a list of queue capabilities functions. |
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| 300 | * |
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| 301 | * $array['function name'] = true or false |
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| 302 | * true is supported, false is not supported. |
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| 303 | * |
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| 304 | * @param string $name |
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| 305 | * |
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| 306 | * @return array |
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| 307 | */ |
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| 308 | public function getCapabilities() |
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| 321 | |||
| 322 | /** |
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| 323 | * Retry failed messages. |
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| 324 | * |
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| 325 | * @param int $id |
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| 326 | */ |
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| 327 | public function retry($id = null) |
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| 343 | |||
| 344 | /** |
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| 345 | * Delete a failed message. |
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| 346 | * |
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| 347 | * @param int $id |
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| 348 | */ |
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| 349 | public function forget($id) |
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| 357 | |||
| 358 | /** |
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| 359 | * {@inheritdoc} |
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| 360 | */ |
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| 361 | public function setPriority($priority) |
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| 365 | |||
| 366 | /** |
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| 367 | * {@inheritdoc} |
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| 368 | */ |
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| 369 | public function showMessages($queueName) |
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| 388 | |||
| 389 | /** |
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| 390 | * {@inheritdoc} |
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| 391 | */ |
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| 392 | public function flush() |
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| 398 | |||
| 399 | /** |
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| 400 | * {@inheritdoc} |
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| 401 | */ |
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| 402 | public function logException($message, $e) |
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| 431 | |||
| 432 | /** |
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| 433 | * Create a new message. |
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| 434 | * |
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| 435 | * @param ZendQueue\Queue $queue |
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| 436 | * @param string $body |
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| 437 | */ |
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| 438 | protected function createMessage(Queue $queue, $body) |
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| 463 | |||
| 464 | /** |
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| 465 | * Get messages of the queue. |
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| 466 | * |
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| 467 | * @param int $maxMessages |
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| 468 | * @param int $timeout |
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| 469 | * @param ZendQueue\Queue $queue |
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| 470 | * @param int $microtime |
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| 471 | */ |
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| 472 | protected function getMessages($maxMessages, $timeout, $queue = null, $microtime = null) |
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| 506 | |||
| 507 | /** |
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| 508 | * Get the queue entity. |
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| 509 | * |
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| 510 | * @param string $name |
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| 511 | * |
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| 512 | * @return Queue Entity |
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| 513 | * |
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| 514 | * @throws ZendQueue\Exception |
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| 515 | */ |
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| 516 | protected function getQueueEntity($name) |
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| 530 | } |
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| 531 |
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: