Complex classes like PaymentService 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 PaymentService, and based on these observations, apply Extract Interface, too.
1 | <?php |
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19 | abstract class PaymentService extends Object{ |
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20 | |||
21 | /** |
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22 | * @var Guzzle\Http\ClientInterface |
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23 | */ |
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24 | private static $httpclient; |
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25 | |||
26 | /** |
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27 | * @var Guzzle\Http\Message\Request |
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28 | */ |
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29 | private static $httprequest; |
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30 | |||
31 | /** |
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32 | * @var Payment |
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33 | */ |
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34 | protected $payment; |
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35 | |||
36 | /** |
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37 | * @var String |
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38 | */ |
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39 | protected $returnurl; |
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40 | |||
41 | /** |
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42 | * @var String |
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43 | */ |
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44 | protected $cancelurl; |
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45 | |||
46 | /** |
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47 | * @var Guzzle\Http\Message\Response |
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48 | */ |
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49 | protected $response; |
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50 | |||
51 | /** |
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52 | * @var GatewayFactory |
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53 | */ |
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54 | protected $gatewayFactory; |
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55 | |||
56 | private static $dependencies = array( |
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57 | 'gatewayFactory' => '%$\Omnipay\Common\GatewayFactory', |
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58 | ); |
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59 | |||
60 | |||
61 | /** |
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62 | * @param Payment |
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63 | */ |
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64 | public function __construct(Payment $payment) { |
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68 | |||
69 | /** |
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70 | * Get the url to return to, that has been previously stored. |
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71 | * This is not a database field. |
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72 | * @return string the url |
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73 | */ |
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74 | public function getReturnUrl() { |
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77 | |||
78 | /** |
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79 | * Set the url to redirect to after payment is made/attempted. |
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80 | * This function also populates the cancel url, if it is empty. |
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81 | * @return PaymentService this object for chaining |
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82 | */ |
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83 | public function setReturnUrl($url) { |
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91 | |||
92 | /** |
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93 | * @return string cancel url |
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94 | */ |
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95 | public function getCancelUrl() { |
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98 | |||
99 | /** |
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100 | * Set the url to redirect to after payment is cancelled |
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101 | * @return PaymentService this object for chaining |
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102 | */ |
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103 | public function setCancelUrl($url) { |
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108 | |||
109 | /** |
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110 | * Get the appropriate redirect url |
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111 | */ |
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112 | public function getRedirectURL() { |
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123 | |||
124 | /** |
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125 | * Update class properties via array. |
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126 | */ |
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127 | public function update($data) { |
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135 | |||
136 | |||
137 | /** |
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138 | * Get the omnipay gateway associated with this payment, |
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139 | * with configuration applied. |
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140 | * |
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141 | * @throws RuntimeException - when gateway doesn't exist. |
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142 | * @return AbstractGateway omnipay gateway class |
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143 | */ |
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144 | public function oGateway() { |
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158 | |||
159 | /** |
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160 | * Generate a return/notify url for off-site gateways (completePayment). |
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161 | * @return string endpoint url |
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162 | */ |
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163 | protected function getEndpointURL($action, $identifier) { |
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166 | |||
167 | /** |
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168 | * Record a transaction on this for this payment. |
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169 | * @param string $type the type of transaction to create. |
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170 | * This is any class that is (or extends) PaymentMessage. |
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171 | * @param array|string|AbstractResponse|AbstractRequest|OmnipayException $data the response to record, or data to store |
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172 | * @return GatewayTransaction newly created dataobject, saved to database. |
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173 | */ |
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174 | protected function createMessage($type, $data = null) { |
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223 | |||
224 | /** |
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225 | * Helper function for logging gateway requests |
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226 | */ |
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227 | protected function logToFile($data, $type = "") { |
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244 | |||
245 | protected function createGatewayResponse() { |
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250 | |||
251 | /** |
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252 | * @return GatewayFactory |
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253 | */ |
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254 | public function getGatewayFactory() { |
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261 | |||
262 | /** |
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263 | * @param GatewayFactory $gatewayFactory |
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264 | * |
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265 | * @return $this |
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266 | */ |
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267 | public function setGatewayFactory($gatewayFactory) { |
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271 | |||
272 | //testing functions (could these instead be injected somehow?) |
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273 | |||
274 | /** |
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275 | * Set the guzzle client (for testing) |
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276 | * @param Guzzle\Http\ClientInterface $httpClient guzzle client for testing |
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277 | */ |
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278 | public static function setHttpClient(Guzzle\Http\ClientInterface $httpClient) |
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282 | |||
283 | public static function getHttpClient() |
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287 | |||
288 | /** |
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289 | * Set the symphony http request (for testing) |
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290 | * @param Symfony\Component\HttpFoundation\Request $httpRequest symphony http request for testing |
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291 | */ |
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292 | public static function setHttpRequest(Symfony\Component\HttpFoundation\Request $httpRequest) |
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296 | |||
297 | public static function getHttpRequest() |
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301 | |||
302 | // ----------------------------------------------------------------------------------------------------------------- |
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303 | // Deprecated methods. |
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304 | // TODO: Remove with 3.0 |
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305 | // ----------------------------------------------------------------------------------------------------------------- |
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306 | |||
307 | /** |
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308 | * Set the guzzle client (for testing) |
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309 | * @param Guzzle\Http\ClientInterface $httpClient guzzle client for testing |
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310 | * @deprecated 3.0 Snake-case methods will be deprecated with 3.0, use setHttpClient |
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311 | */ |
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312 | public static function set_http_client(Guzzle\Http\ClientInterface $httpClient) { |
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316 | |||
317 | /** |
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318 | * @deprecated 3.0 Snake-case methods will be deprecated with 3.0, use getHttpClient |
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319 | */ |
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320 | public static function get_http_client() { |
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324 | |||
325 | /** |
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326 | * Set the symphony http request (for testing) |
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327 | * @param Symfony\Component\HttpFoundation\Request $httpRequest symphony http request for testing |
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328 | * @deprecated 3.0 Snake-case methods will be deprecated with 3.0, use setHttpRequest |
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329 | */ |
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330 | public static function set_http_request(Symfony\Component\HttpFoundation\Request $httpRequest) { |
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334 | |||
335 | /** |
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336 | * @deprecated 3.0 Snake-case methods will be deprecated with 3.0, use getHttpRequest |
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337 | */ |
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338 | public static function get_http_request() { |
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342 | |||
343 | } |
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344 |
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.