Complex classes like ProductVariant 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 ProductVariant, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 24 | class ProductVariant extends BaseVariant implements ProductVariantInterface  | 
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| 25 | { | 
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| 26 | /**  | 
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| 27 | * @var string  | 
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| 28 | */  | 
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| 29 | protected $sku;  | 
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| 30 | |||
| 31 | /**  | 
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| 32 | * @var int  | 
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| 33 | */  | 
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| 34 | protected $price;  | 
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| 35 | |||
| 36 | /**  | 
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| 37 | * @var int  | 
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| 38 | */  | 
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| 39 | protected $originalPrice;  | 
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| 40 | |||
| 41 | /**  | 
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| 42 | * @var string  | 
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| 43 | */  | 
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| 44 | protected $pricingCalculator = Calculators::STANDARD;  | 
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| 45 | |||
| 46 | /**  | 
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| 47 | * @var array  | 
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| 48 | */  | 
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| 49 | protected $pricingConfiguration = [];  | 
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| 50 | |||
| 51 | /**  | 
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| 52 | * @var int  | 
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| 53 | */  | 
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| 54 | protected $onHold = 0;  | 
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| 55 | |||
| 56 | /**  | 
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| 57 | * @var int  | 
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| 58 | */  | 
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| 59 | protected $onHand = 0;  | 
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| 60 | |||
| 61 | /**  | 
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| 62 | * @var int  | 
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| 63 | */  | 
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| 64 | protected $sold = 0;  | 
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| 65 | |||
| 66 | /**  | 
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| 67 | * @var bool  | 
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| 68 | */  | 
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| 69 | protected $availableOnDemand = true;  | 
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| 70 | |||
| 71 | /**  | 
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| 72 | * @var Collection|ProductVariantImageInterface[]  | 
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| 73 | */  | 
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| 74 | protected $images;  | 
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| 75 | |||
| 76 | /**  | 
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| 77 | * @var float  | 
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| 78 | */  | 
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| 79 | protected $weight;  | 
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| 80 | |||
| 81 | /**  | 
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| 82 | * @var float  | 
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| 83 | */  | 
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| 84 | protected $width;  | 
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| 85 | |||
| 86 | /**  | 
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| 87 | * @var float  | 
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| 88 | */  | 
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| 89 | protected $height;  | 
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| 90 | |||
| 91 | /**  | 
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| 92 | * @var float  | 
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| 93 | */  | 
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| 94 | protected $depth;  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | * @var TaxCategoryInterface  | 
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| 98 | */  | 
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| 99 | protected $taxCategory;  | 
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| 100 | |||
| 101 | /**  | 
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| 102 | * Override constructor to set on hand stock.  | 
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| 103 | */  | 
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| 104 | public function __construct()  | 
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| 110 | |||
| 111 | public function __toString()  | 
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| 127 | |||
| 128 | /**  | 
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| 129 |      * {@inheritdoc} | 
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| 130 | */  | 
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| 131 | public function getMetadataClassIdentifier()  | 
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| 135 | |||
| 136 | /**  | 
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| 137 |      * {@inheritdoc} | 
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| 138 | */  | 
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| 139 | public function getMetadataIdentifier()  | 
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| 143 | |||
| 144 | /**  | 
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| 145 |      * {@inheritdoc} | 
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| 146 | */  | 
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| 147 | public function getSku()  | 
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| 151 | |||
| 152 | /**  | 
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| 153 |      * {@inheritdoc} | 
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| 154 | */  | 
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| 155 | public function setSku($sku)  | 
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| 161 | |||
| 162 | /**  | 
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| 163 |      * {@inheritdoc} | 
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| 164 | */  | 
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| 165 | public function getPrice()  | 
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| 169 | |||
| 170 | /**  | 
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| 171 |      * {@inheritdoc} | 
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| 172 | */  | 
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| 173 | public function setPrice($price)  | 
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| 182 | |||
| 183 | /**  | 
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| 184 |      * {@inheritdoc} | 
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| 185 | */  | 
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| 186 | public function setOriginalPrice($originalPrice)  | 
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| 193 | |||
| 194 | /**  | 
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| 195 |      * {@inheritdoc} | 
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| 196 | */  | 
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| 197 | public function getOriginalPrice()  | 
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| 201 | |||
| 202 | /**  | 
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| 203 |      * {@inheritdoc} | 
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| 204 | */  | 
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| 205 | public function getPricingCalculator()  | 
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| 209 | |||
| 210 | /**  | 
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| 211 |      * {@inheritdoc} | 
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| 212 | */  | 
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| 213 | public function setPricingCalculator($calculator)  | 
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| 219 | |||
| 220 | /**  | 
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| 221 |      * {@inheritdoc} | 
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| 222 | */  | 
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| 223 | public function getPricingConfiguration()  | 
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| 227 | |||
| 228 | /**  | 
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| 229 |      * {@inheritdoc} | 
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| 230 | */  | 
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| 231 | public function setPricingConfiguration(array $configuration)  | 
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| 237 | |||
| 238 | /**  | 
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| 239 |      * {@inheritdoc} | 
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| 240 | */  | 
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| 241 | public function isInStock()  | 
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| 245 | |||
| 246 | /**  | 
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| 247 |      * {@inheritdoc} | 
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| 248 | */  | 
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| 249 | public function getOnHold()  | 
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| 253 | |||
| 254 | /**  | 
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| 255 |      * {@inheritdoc} | 
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| 256 | */  | 
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| 257 | public function setOnHold($onHold)  | 
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| 263 | |||
| 264 | /**  | 
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| 265 |      * {@inheritdoc} | 
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| 266 | */  | 
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| 267 | public function getOnHand()  | 
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| 271 | |||
| 272 | /**  | 
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| 273 |      * {@inheritdoc} | 
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| 274 | */  | 
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| 275 | public function setOnHand($onHand)  | 
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| 285 | |||
| 286 | /**  | 
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| 287 |      * {@inheritdoc} | 
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| 288 | */  | 
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| 289 | public function getSold()  | 
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| 293 | |||
| 294 | /**  | 
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| 295 |      * {@inheritdoc} | 
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| 296 | */  | 
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| 297 | public function setSold($sold)  | 
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| 301 | |||
| 302 | /**  | 
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| 303 |      * {@inheritdoc} | 
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| 304 | */  | 
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| 305 | public function getInventoryName()  | 
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| 309 | |||
| 310 | /**  | 
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| 311 |      * {@inheritdoc} | 
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| 312 | */  | 
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| 313 | public function isAvailableOnDemand()  | 
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| 317 | |||
| 318 | /**  | 
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| 319 |      * {@inheritdoc} | 
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| 320 | */  | 
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| 321 | public function setAvailableOnDemand($availableOnDemand)  | 
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| 327 | |||
| 328 | /**  | 
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| 329 |      * {@inheritdoc} | 
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| 330 | */  | 
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| 331 | public function setDefaults(BaseVariantInterface $masterVariant)  | 
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| 339 | |||
| 340 | /**  | 
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| 341 |      * {@inheritdoc} | 
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| 342 | */  | 
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| 343 | public function getShippingCategory()  | 
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| 347 | |||
| 348 | /**  | 
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| 349 |      * {@inheritdoc} | 
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| 350 | */  | 
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| 351 | public function hasImage(ProductVariantImageInterface $image)  | 
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| 355 | |||
| 356 | /**  | 
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| 357 |      * {@inheritdoc} | 
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| 358 | */  | 
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| 359 | public function getImages()  | 
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| 363 | |||
| 364 | /**  | 
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| 365 |      * {@inheritdoc} | 
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| 366 | */  | 
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| 367 | public function getImage()  | 
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| 375 | |||
| 376 | /**  | 
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| 377 |      * {@inheritdoc} | 
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| 378 | */  | 
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| 379 | public function addImage(ProductVariantImageInterface $image)  | 
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| 388 | |||
| 389 | /**  | 
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| 390 |      * {@inheritdoc} | 
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| 391 | */  | 
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| 392 | public function removeImage(ProductVariantImageInterface $image)  | 
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| 399 | |||
| 400 | /**  | 
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| 401 |      * {@inheritdoc} | 
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| 402 | */  | 
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| 403 | public function getWeight()  | 
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| 407 | |||
| 408 | /**  | 
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| 409 |      * {@inheritdoc} | 
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| 410 | */  | 
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| 411 | public function setWeight($weight)  | 
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| 417 | |||
| 418 | /**  | 
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| 419 |      * {@inheritdoc} | 
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| 420 | */  | 
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| 421 | public function getWidth()  | 
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| 425 | |||
| 426 | /**  | 
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| 427 |      * {@inheritdoc} | 
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| 428 | */  | 
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| 429 | public function setWidth($width)  | 
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| 435 | |||
| 436 | /**  | 
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| 437 |      * {@inheritdoc} | 
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| 438 | */  | 
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| 439 | public function getHeight()  | 
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| 443 | |||
| 444 | /**  | 
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| 445 |      * {@inheritdoc} | 
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| 446 | */  | 
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| 447 | public function setHeight($height)  | 
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| 453 | |||
| 454 | /**  | 
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| 455 |      * {@inheritdoc} | 
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| 456 | */  | 
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| 457 | public function getDepth()  | 
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| 461 | |||
| 462 | /**  | 
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| 463 |      * {@inheritdoc} | 
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| 464 | */  | 
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| 465 | public function setDepth($depth)  | 
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| 471 | |||
| 472 | /**  | 
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| 473 |      * {@inheritdoc} | 
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| 474 | */  | 
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| 475 | public function getShippingWeight()  | 
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| 479 | |||
| 480 | /**  | 
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| 481 |      * {@inheritdoc} | 
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| 482 | */  | 
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| 483 | public function getShippingWidth()  | 
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| 487 | |||
| 488 | /**  | 
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| 489 |      * {@inheritdoc} | 
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| 490 | */  | 
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| 491 | public function getShippingHeight()  | 
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| 495 | |||
| 496 | /**  | 
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| 497 |      * {@inheritdoc} | 
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| 498 | */  | 
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| 499 | public function getShippingDepth()  | 
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| 503 | |||
| 504 | /**  | 
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| 505 |      * {@inheritdoc} | 
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| 506 | */  | 
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| 507 | public function getShippingVolume()  | 
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| 511 | |||
| 512 | /**  | 
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| 513 |      * {@inheritdoc} | 
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| 514 | */  | 
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| 515 | public function isPriceReduced()  | 
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| 519 | |||
| 520 | /**  | 
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| 521 |      * {@inheritdoc} | 
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| 522 | */  | 
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| 523 | public function getTaxCategory()  | 
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| 527 | |||
| 528 | /**  | 
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| 529 |      * {@inheritdoc} | 
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| 530 | */  | 
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| 531 | public function setTaxCategory(TaxCategoryInterface $category = null)  | 
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| 535 | }  | 
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| 536 |