Complex classes like Factory 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 Factory, and based on these observations, apply Extract Interface, too.
1 | <?php |
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18 | class Factory |
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19 | { |
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20 | /** |
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21 | * Creates a new RData object from a name. |
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22 | * |
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23 | * @param string $name |
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24 | * |
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25 | * @throws UnsupportedTypeException |
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26 | * |
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27 | * @return RdataInterface |
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28 | */ |
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29 | 1 | public static function newRdataFromName(string $name): RdataInterface |
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39 | |||
40 | /** |
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41 | * @param int $id |
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42 | * |
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43 | * @return RdataInterface |
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44 | * |
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45 | * @throws UnsupportedTypeException |
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46 | */ |
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47 | public static function newRdataFromId(int $id): RdataInterface |
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51 | |||
52 | /** |
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53 | * @param string $name |
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54 | * |
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55 | * @return bool |
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56 | */ |
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57 | 17 | public static function isTypeImplemented(string $name): bool |
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61 | |||
62 | /** |
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63 | * @param string $type |
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64 | * @param string $text |
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65 | * |
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66 | * @return RdataInterface |
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67 | */ |
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68 | 16 | public static function textToRdataType(string $type, string $text): RdataInterface |
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79 | |||
80 | /** |
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81 | * Get the fully qualified class name of the RData class for $type. |
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82 | * |
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83 | * @param string $type |
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84 | * |
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85 | * @return string |
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86 | */ |
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87 | 17 | public static function getRdataClassName(string $type): string |
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91 | |||
92 | /** |
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93 | * Create a new AAAA R-Data object. |
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94 | * |
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95 | * @param string $address |
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96 | * |
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97 | * @return AAAA |
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98 | */ |
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99 | 12 | public static function AAAA(string $address): AAAA |
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106 | |||
107 | /** |
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108 | * Create a new A R-Data object. |
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109 | * |
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110 | * @param string $address |
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111 | * |
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112 | * @return A |
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113 | */ |
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114 | 12 | public static function A(string $address): A |
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121 | |||
122 | /** |
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123 | * Create a new CNAME object. |
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124 | * |
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125 | * @param string $cname |
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126 | * |
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127 | * @return CNAME |
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128 | */ |
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129 | 9 | public static function CNAME(string $cname): CNAME |
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136 | |||
137 | /** |
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138 | * @param string $cpu |
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139 | * @param string $os |
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140 | * |
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141 | * @return HINFO |
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142 | */ |
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143 | 8 | public static function HINFO(string $cpu, string $os): HINFO |
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151 | |||
152 | /** |
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153 | * @param int $preference |
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154 | * @param string $exchange |
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155 | * |
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156 | * @return MX |
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157 | */ |
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158 | 11 | public static function MX(int $preference, string $exchange): MX |
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166 | |||
167 | /** |
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168 | * @param string $mname |
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169 | * @param string $rname |
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170 | * @param int $serial |
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171 | * @param int $refresh |
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172 | * @param int $retry |
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173 | * @param int $expire |
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174 | * @param int $minimum |
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175 | * |
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176 | * @return SOA |
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177 | */ |
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178 | 14 | public static function SOA(string $mname, string $rname, int $serial, int $refresh, int $retry, int $expire, int $minimum): SOA |
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191 | |||
192 | /** |
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193 | * @param string $nsdname |
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194 | * |
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195 | * @return NS |
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196 | */ |
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197 | 13 | public static function NS(string $nsdname): NS |
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204 | |||
205 | /** |
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206 | * @param string $text |
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207 | * |
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208 | * @return TXT |
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209 | */ |
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210 | 10 | public static function TXT(string $text): TXT |
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217 | |||
218 | /** |
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219 | * @param string $target |
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220 | * |
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221 | * @return DNAME |
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222 | */ |
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223 | 9 | public static function DNAME(string $target): DNAME |
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230 | |||
231 | /** |
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232 | * @param float $lat |
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233 | * @param float $lon |
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234 | * @param float $alt |
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235 | * @param float $size |
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236 | * @param float $hp |
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237 | * @param float $vp |
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238 | * |
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239 | * @return LOC |
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240 | */ |
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241 | 10 | public static function LOC(float $lat, float $lon, $alt = 0.0, $size = 1.0, $hp = 10000.0, $vp = 10.0): LOC |
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253 | |||
254 | /** |
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255 | * @param string $target |
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256 | * |
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257 | * @return PTR |
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258 | */ |
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259 | 2 | public static function PTR(string $target): PTR |
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266 | |||
267 | /** |
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268 | * @param int $flags |
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269 | * @param int $algorithm |
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270 | * @param string $publicKey |
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271 | * |
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272 | * @return DNSKEY |
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273 | */ |
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274 | 1 | public static function DNSKEY(int $flags, int $algorithm, string $publicKey): DNSKEY |
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283 | |||
284 | /** |
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285 | * @param int $keyTag |
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286 | * @param int $algorithm |
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287 | * @param string $digest |
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288 | * @param int $digestType |
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289 | * |
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290 | * @return DS |
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291 | */ |
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292 | 1 | public static function DS(int $keyTag, int $algorithm, string $digest, int $digestType = DS::DIGEST_SHA1): DS |
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302 | |||
303 | /** |
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304 | * @param string $nextDomainName |
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305 | * @param array $types |
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306 | * |
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307 | * @return NSEC |
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308 | */ |
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309 | 1 | public static function NSEC(string $nextDomainName, array $types): NSEC |
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317 | |||
318 | /** |
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319 | * @param string $typeCovered |
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320 | * @param int $algorithm |
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321 | * @param int $labels |
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322 | * @param int $originalTtl |
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323 | * @param int $signatureExpiration |
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324 | * @param int $signatureInception |
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325 | * @param int $keyTag |
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326 | * @param string $signersName |
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327 | * @param string $signature |
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328 | * |
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329 | * @return RRSIG |
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330 | */ |
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331 | 1 | public static function RRSIG(string $typeCovered, int $algorithm, int $labels, int $originalTtl, |
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348 | |||
349 | /** |
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350 | * @param int $priority |
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351 | * @param int $weight |
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352 | * @param int $port |
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353 | * @param string $target |
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354 | * |
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355 | * @return SRV |
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356 | */ |
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357 | 1 | public static function SRV(int $priority, int $weight, int $port, string $target): SRV |
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367 | |||
368 | /** |
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369 | * @param IPBlock[] $includedRanges |
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370 | * @param IPBlock[] $excludedRanges |
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371 | * |
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372 | * @return APL |
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373 | */ |
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374 | 2 | public static function APL(array $includedRanges = [], array $excludedRanges = []): APL |
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388 | |||
389 | /** |
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390 | * @param int $flag |
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391 | * @param string $tag |
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392 | * @param string $value |
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393 | * |
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394 | * @return CAA |
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395 | */ |
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396 | 1 | public static function CAA(int $flag, string $tag, string $value): CAA |
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405 | |||
406 | /** |
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407 | * @param int $subType |
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408 | * @param string $hostname |
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409 | * |
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410 | * @return AFSDB |
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411 | */ |
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412 | public static function AFSDB(int $subType, string $hostname): AFSDB |
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420 | |||
421 | public static function CDNSKEY(): CDNSKEY |
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425 | |||
426 | public static function CDS(): CDS |
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430 | |||
431 | public static function CERT(): CERT |
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435 | |||
436 | public static function CSYNC(): CSYNC |
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440 | |||
441 | /** |
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442 | * @param string|null $digest Set to &null if the $identifier and $fqdn are known |
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443 | * @param int $identifierType 16-bit integer |
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444 | * @param string|null $identifier This is ignored if $digest is not &null |
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445 | * @param string|null $fqdn This is ignored if $digest is not &null |
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446 | * |
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447 | * @return DHCID |
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448 | */ |
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449 | 3 | public static function DHCID(?string $digest, int $identifierType, ?string $identifier = null, ?string $fqdn = null): DHCID |
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468 | |||
469 | /** |
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470 | * @param int $keyTag |
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471 | * @param int $algorithm |
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472 | * @param string $digest |
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473 | * @param int $digestType |
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474 | * |
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475 | * @return DLV |
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476 | */ |
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477 | public static function DLV(int $keyTag, int $algorithm, string $digest, int $digestType = DS::DIGEST_SHA1): DLV |
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487 | |||
488 | public static function HIP(): HIP |
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492 | |||
493 | /** |
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494 | * @param int $precedence an 8-bit unsigned integer |
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495 | * @param string|null $gateway either &null for no gateway, a fully qualified domain name, or an IPv4 or IPv6 address |
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496 | * @param int $algorithm either IPSECKEY::ALGORITHM_NONE, IPSECKEY::ALGORITHM_DSA, IPSECKEY::ALGORITHM_RSA, or IPSECKEY::ALGORITHM_ECDSA |
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497 | * @param string|null $publicKey base64 encoded public key |
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498 | * |
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499 | * @return IPSECKEY |
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500 | */ |
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501 | 6 | public static function IPSECKEY(int $precedence, ?string $gateway, int $algorithm = 0, ?string $publicKey = null): IPSECKEY |
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510 | |||
511 | public static function KEY(): KEY |
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515 | |||
516 | public static function KX(): KX |
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520 | |||
521 | 2 | public static function NAPTR(int $order, int $preference, string $flags, string $services, string $regexp, string $replacement): NAPTR |
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533 | |||
534 | public static function NSEC3(): NSEC3 |
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538 | |||
539 | public static function NSEC3PARAM(): NSEC3PARAM |
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543 | |||
544 | public static function OPENPGPKEY(): OPENPGPKEY |
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548 | |||
549 | public static function RP(string $mboxDomain, string $txtDomain): RP |
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557 | |||
558 | public static function SIG(): SIG |
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562 | |||
563 | public static function SMIMEA(): SMIMEA |
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567 | |||
568 | /** |
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569 | * @param int $algorithm |
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570 | * @param int $fpType |
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571 | * @param string $fingerprint |
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572 | * |
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573 | * @return SSHFP |
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574 | */ |
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575 | 6 | public static function SSHFP(int $algorithm, int $fpType, string $fingerprint): SSHFP |
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584 | |||
585 | public static function TA(): TA |
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589 | |||
590 | public static function TKEY(): TKEY |
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594 | |||
595 | public static function TLSA(): TLSA |
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599 | |||
600 | public static function TSIG(): TSIG |
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604 | |||
605 | /** |
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606 | * @param int $priority |
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607 | * @param int $weight |
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608 | * @param string $target |
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609 | * |
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610 | * @return URI |
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611 | */ |
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612 | 6 | public static function URI(int $priority, int $weight, string $target): URI |
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621 | } |
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622 |