pamil /
Sylius
Complex classes like OrderContext 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 OrderContext, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 47 | final class OrderContext implements Context |
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| 48 | { |
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| 49 | /** |
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| 50 | * @var SharedStorageInterface |
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| 51 | */ |
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| 52 | private $sharedStorage; |
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| 53 | |||
| 54 | /** |
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| 55 | * @var OrderRepositoryInterface |
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| 56 | */ |
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| 57 | private $orderRepository; |
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| 58 | |||
| 59 | /** |
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| 60 | * @var FactoryInterface |
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| 61 | */ |
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| 62 | private $orderFactory; |
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| 63 | |||
| 64 | /** |
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| 65 | * @var OrderProcessorInterface |
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| 66 | */ |
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| 67 | private $orderProcessor; |
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| 68 | |||
| 69 | /** |
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| 70 | * @var FactoryInterface |
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| 71 | */ |
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| 72 | private $orderItemFactory; |
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| 73 | |||
| 74 | /** |
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| 75 | * @var OrderItemQuantityModifierInterface |
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| 76 | */ |
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| 77 | private $itemQuantityModifier; |
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| 78 | |||
| 79 | /** |
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| 80 | * @var RepositoryInterface |
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| 81 | */ |
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| 82 | private $currencyRepository; |
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| 83 | |||
| 84 | /** |
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| 85 | * @var CurrencyStorageInterface |
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| 86 | */ |
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| 87 | private $currencyStorage; |
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| 88 | |||
| 89 | /** |
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| 90 | * @var FactoryInterface |
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| 91 | */ |
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| 92 | private $customerFactory; |
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| 93 | |||
| 94 | /** |
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| 95 | * @var RepositoryInterface |
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| 96 | */ |
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| 97 | private $customerRepository; |
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| 98 | |||
| 99 | /** |
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| 100 | * @var ObjectManager |
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| 101 | */ |
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| 102 | private $objectManager; |
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| 103 | |||
| 104 | /** |
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| 105 | * @var StateMachineFactoryInterface |
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| 106 | */ |
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| 107 | private $stateMachineFactory; |
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| 108 | |||
| 109 | /** |
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| 110 | * @var ProductVariantResolverInterface |
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| 111 | */ |
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| 112 | private $variantResolver; |
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| 113 | |||
| 114 | /** |
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| 115 | * @param SharedStorageInterface $sharedStorage |
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| 116 | * @param OrderRepositoryInterface $orderRepository |
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| 117 | * @param FactoryInterface $orderFactory |
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| 118 | * @param OrderProcessorInterface $orderProcessor |
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| 119 | * @param FactoryInterface $orderItemFactory |
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| 120 | * @param OrderItemQuantityModifierInterface $itemQuantityModifier |
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| 121 | * @param RepositoryInterface $currencyRepository |
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| 122 | * @param CurrencyStorageInterface $currencyStorage |
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| 123 | * @param FactoryInterface $customerFactory |
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| 124 | * @param RepositoryInterface $customerRepository |
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| 125 | * @param ObjectManager $objectManager |
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| 126 | * @param StateMachineFactoryInterface $stateMachineFactory |
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| 127 | * @param ProductVariantResolverInterface $variantResolver |
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| 128 | */ |
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| 129 | public function __construct( |
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| 158 | |||
| 159 | /** |
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| 160 | * @Given /^there is (?:a|another) (customer "[^"]+") that placed an order$/ |
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| 161 | * @Given /^there is (?:a|another) (customer "[^"]+") that placed (an order "[^"]+")$/ |
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| 162 | * @Given a customer :customer placed an order :orderNumber |
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| 163 | * @Given the customer :customer has already placed an order :orderNumber |
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| 164 | */ |
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| 165 | public function thereIsCustomerThatPlacedOrder(CustomerInterface $customer, $orderNumber = null) |
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| 173 | |||
| 174 | /** |
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| 175 | * @Given a customer :customer added something to cart |
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| 176 | */ |
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| 177 | public function customerStartedCheckout(CustomerInterface $customer) |
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| 185 | |||
| 186 | /** |
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| 187 | * @Given /^(I) placed (an order "[^"]+")$/ |
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| 188 | */ |
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| 189 | public function iPlacedAnOrder(UserInterface $user, $orderNumber) |
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| 198 | |||
| 199 | /** |
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| 200 | * @Given /^the customer ("[^"]+" addressed it to "[^"]+", "[^"]+" "[^"]+" in the "[^"]+"(?:|, "[^"]+"))$/ |
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| 201 | * @Given /^I (addressed it to "[^"]+", "[^"]+", "[^"]+" "[^"]+" in the "[^"]+"(?:|, "[^"]+"))$/ |
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| 202 | */ |
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| 203 | public function theCustomerAddressedItTo(AddressInterface $address) |
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| 211 | |||
| 212 | /** |
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| 213 | * @Given /^the customer set the billing (address as "([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)")$/ |
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| 214 | * @Given /^for the billing address (of "[^"]+" in the "[^"]+", "[^"]+" "[^"]+", "[^"]+")$/ |
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| 215 | * @Given /^for the billing address (of "[^"]+" in the "[^"]+", "[^"]+" "([^"]+)", "[^"]+", "[^"]+")$/ |
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| 216 | */ |
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| 217 | public function forTheBillingAddressOf(AddressInterface $address) |
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| 228 | |||
| 229 | /** |
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| 230 | * @Given /^the customer ("[^"]+" addressed it to "[^"]+", "[^"]+" "[^"]+" in the "[^"]+") with identical billing address$/ |
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| 231 | * @Given /^I (addressed it to "[^"]+", "[^"]+", "[^"]+" "[^"]+" in the "[^"]+") with identical billing address$/ |
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| 232 | */ |
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| 233 | public function theCustomerAddressedItToWithIdenticalBillingAddress(AddressInterface $address) |
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| 238 | |||
| 239 | /** |
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| 240 | * @Given /^the customer chose ("[^"]+" shipping method) (to "[^"]+") with ("[^"]+" payment)$/ |
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| 241 | * @Given /^I chose ("[^"]+" shipping method) (to "[^"]+") with ("[^"]+" payment)$/ |
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| 242 | */ |
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| 243 | public function theCustomerChoseShippingToWithPayment( |
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| 255 | |||
| 256 | /** |
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| 257 | * @Given /^the customer chose ("[^"]+" shipping method) with ("[^"]+" payment)$/ |
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| 258 | * @Given /^I chose ("[^"]+" shipping method) with ("[^"]+" payment)$/ |
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| 259 | */ |
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| 260 | public function theCustomerChoseShippingWithPayment( |
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| 271 | |||
| 272 | /** |
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| 273 | * @Given the customer bought a single :product |
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| 274 | * @Given I bought a single :product |
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| 275 | */ |
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| 276 | public function theCustomerBoughtSingleProduct(ProductInterface $product) |
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| 282 | |||
| 283 | /** |
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| 284 | * @Given /^the customer bought ((?:a|an) "[^"]+") and ((?:a|an) "[^"]+")$/ |
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| 285 | * @Given /^I bought ((?:a|an) "[^"]+") and ((?:a|an) "[^"]+")$/ |
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| 286 | */ |
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| 287 | public function theCustomerBoughtProductAndProduct(ProductInterface $product, ProductInterface $secondProduct) |
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| 292 | |||
| 293 | /** |
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| 294 | * @Given /^the customer bought (\d+) ("[^"]+" products)$/ |
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| 295 | */ |
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| 296 | public function theCustomerBoughtSeveralProducts($quantity, ProductInterface $product) |
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| 303 | |||
| 304 | /** |
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| 305 | * @Given /^the customer bought ([^"]+) units of ("[^"]+" variant of product "[^"]+")$/ |
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| 306 | */ |
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| 307 | public function theCustomerBoughtSeveralVariantsOfProduct($quantity, ProductVariantInterface $variant) |
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| 313 | |||
| 314 | /** |
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| 315 | * @Given /^the customer bought a single ("[^"]+" variant of product "[^"]+")$/ |
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| 316 | */ |
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| 317 | public function theCustomerBoughtSingleProductVariant(ProductVariantInterface $productVariant) |
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| 323 | |||
| 324 | /** |
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| 325 | * @Given the customer bought a single :product using :coupon coupon |
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| 326 | * @Given I bought a single :product using :coupon coupon |
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| 327 | */ |
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| 328 | public function theCustomerBoughtSingleUsing(ProductInterface $product, PromotionCouponInterface $coupon) |
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| 335 | |||
| 336 | /** |
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| 337 | * @Given I used :coupon coupon |
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| 338 | */ |
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| 339 | public function iUsedCoupon(PromotionCouponInterface $coupon) |
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| 346 | |||
| 347 | /** |
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| 348 | * @Given /^(I) have already placed (\d+) orders choosing ("[^"]+" shipping method) (to "[^"]+") with ("[^"]+" payment)$/ |
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| 349 | */ |
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| 350 | public function iHaveAlreadyPlacedOrderNthTimes( |
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| 367 | |||
| 368 | /** |
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| 369 | * @Given /^(this customer) has(?:| also) placed (an order "[^"]+") at "([^"]+)"$/ |
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| 370 | */ |
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| 371 | public function thisCustomerHasPlacedAnOrderAtDate(CustomerInterface $customer, $number, $checkoutCompletedAt) |
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| 379 | |||
| 380 | /** |
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| 381 | * @Given /^(this customer) has(?:| also) placed (an order "[^"]+") on a (channel "[^"]+")$/ |
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| 382 | */ |
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| 383 | public function thisCustomerHasPlacedAnOrderOnAChannel(CustomerInterface $customer, $number, $channel) |
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| 390 | |||
| 391 | /** |
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| 392 | * @Given :numberOfCustomers customers have added products to the cart for total of :total |
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| 393 | */ |
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| 394 | public function customersHaveAddedProductsToTheCartForTotalOf($numberOfCustomers, $total) |
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| 412 | |||
| 413 | /** |
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| 414 | * @Given :numberOfCustomers customers have placed :numberOfOrders orders for total of :total |
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| 415 | * @Given then :numberOfCustomers more customers have placed :numberOfOrders orders for total of :total |
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| 416 | */ |
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| 417 | public function customersHavePlacedOrdersForTotalOf($numberOfCustomers, $numberOfOrders, $total) |
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| 437 | |||
| 438 | /** |
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| 439 | * @Given :numberOfCustomers customers have placed :numberOfOrders orders for total of :total mostly :product product |
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| 440 | * @Given then :numberOfCustomers more customers have placed :numberOfOrders orders for total of :total mostly :product product |
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| 441 | */ |
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| 442 | public function customersHavePlacedOrdersForTotalOfMostlyProduct($numberOfCustomers, $numberOfOrders, $total, ProductInterface $product) |
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| 461 | |||
| 462 | /** |
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| 463 | * @Given /^(this customer) has(?:| also) placed (an order "[^"]+") buying a single ("[^"]+" product) for ("[^"]+") in ("[^"]+" currency)$/ |
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| 464 | */ |
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| 465 | public function customerHasPlacedAnOrderBuyingASingleProductForInCurrency( |
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| 479 | |||
| 480 | /** |
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| 481 | * @Given /^(this order) is already paid$/ |
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| 482 | * @Given the order :order is already paid |
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| 483 | */ |
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| 484 | public function thisOrderIsAlreadyPaid(OrderInterface $order) |
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| 490 | |||
| 491 | /** |
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| 492 | * @Given /^the customer cancelled (this order)$/ |
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| 493 | * @Given /^(this order) was cancelled$/ |
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| 494 | * @Given the order :order was cancelled |
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| 495 | * @Given /^I cancelled (this order)$/ |
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| 496 | */ |
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| 497 | public function theCustomerCancelledThisOrder(OrderInterface $order) |
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| 503 | |||
| 504 | /** |
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| 505 | * @Given /^I cancelled my last order$/ |
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| 506 | */ |
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| 507 | public function theCustomerCancelledMyLastOrder() |
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| 514 | |||
| 515 | /** |
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| 516 | * @Given /^(this order) has already been shipped$/ |
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| 517 | */ |
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| 518 | public function thisOrderHasAlreadyBeenShipped(OrderInterface $order) |
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| 524 | |||
| 525 | /** |
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| 526 | * @param OrderInterface $order |
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| 527 | * @param string $transition |
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| 528 | */ |
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| 529 | private function applyShipmentTransitionOnOrder(OrderInterface $order, $transition) |
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| 535 | |||
| 536 | /** |
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| 537 | * @param OrderInterface $order |
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| 538 | * @param string $transition |
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| 539 | */ |
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| 540 | private function applyPaymentTransitionOnOrder(OrderInterface $order, $transition) |
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| 546 | |||
| 547 | /** |
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| 548 | * @param OrderInterface $order |
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| 549 | * @param string $transition |
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| 550 | */ |
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| 551 | private function applyTransitionOnOrderCheckout(OrderInterface $order, $transition) |
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| 555 | |||
| 556 | /** |
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| 557 | * @param ProductVariantInterface $productVariant |
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| 558 | * @param int $quantity |
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| 559 | * |
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| 560 | * @return OrderInterface |
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| 561 | */ |
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| 562 | private function addProductVariantToOrder(ProductVariantInterface $productVariant, $quantity = 1) |
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| 580 | |||
| 581 | /** |
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| 582 | * @param CustomerInterface $customer |
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| 583 | * @param string $number |
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| 584 | * @param ChannelInterface|null $channel |
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| 585 | * @param string|null $currencyCode |
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| 586 | * @param string|null $localeCode |
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| 587 | * |
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| 588 | * @return OrderInterface |
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| 589 | */ |
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| 590 | private function createOrder( |
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| 607 | |||
| 608 | /** |
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| 609 | * @param CustomerInterface $customer |
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| 610 | * @param ChannelInterface|null $channel |
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| 611 | * @param string|null $currencyCode |
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| 612 | * @param string|null $localeCode |
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| 613 | * |
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| 614 | * @return OrderInterface |
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| 615 | */ |
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| 616 | private function createCart( |
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| 636 | |||
| 637 | /** |
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| 638 | * @param int $count |
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| 639 | * |
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| 640 | * @return CustomerInterface[] |
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| 641 | */ |
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| 642 | private function generateCustomers($count) |
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| 659 | |||
| 660 | /** |
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| 661 | * @param string $price |
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| 662 | * |
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| 663 | * @return int |
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| 664 | */ |
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| 665 | private function getPriceFromString($price) |
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| 669 | |||
| 670 | /** |
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| 671 | * @param OrderInterface $order |
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| 672 | * @param ShippingMethodInterface $shippingMethod |
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| 673 | * @param AddressInterface $address |
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| 674 | * @param PaymentMethodInterface $paymentMethod |
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| 675 | */ |
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| 676 | private function checkoutUsing( |
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| 689 | |||
| 690 | /** |
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| 691 | * @param OrderInterface $order |
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| 692 | * @param ShippingMethodInterface $shippingMethod |
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| 693 | * @param PaymentMethodInterface $paymentMethod |
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| 694 | */ |
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| 695 | private function proceedSelectingShippingAndPaymentMethod(OrderInterface $order, ShippingMethodInterface $shippingMethod, PaymentMethodInterface $paymentMethod) |
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| 708 | |||
| 709 | /** |
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| 710 | * @param OrderInterface $order |
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| 711 | * @param ProductVariantInterface $variant |
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| 712 | * @param int $price |
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| 713 | */ |
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| 714 | private function addVariantWithPriceToOrder(OrderInterface $order, ProductVariantInterface $variant, $price) |
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| 724 | } |
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| 725 |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: