Complex classes like LocalDriver 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 LocalDriver, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
29 | class LocalDriver extends DriverAbstract |
||
30 | { |
||
31 | /** |
||
32 | * driver root |
||
33 | * |
||
34 | * @var string |
||
35 | * @access protected |
||
36 | */ |
||
37 | protected $root; |
||
38 | |||
39 | /** |
||
40 | * @param string $rootDir |
||
41 | * @throws LogicException |
||
42 | * @access public |
||
43 | */ |
||
44 | public function __construct(/*# string */ $rootDir) |
||
53 | |||
54 | /** |
||
55 | * {@inheritDoc} |
||
56 | */ |
||
57 | protected function realPath(/*# string */ $path)/*# : string */ |
||
61 | |||
62 | /** |
||
63 | * {@inheritDoc} |
||
64 | */ |
||
65 | protected function realExists(/*# string */ $realPath)/*# : bool */ |
||
69 | |||
70 | /** |
||
71 | * {@inheritDoc} |
||
72 | */ |
||
73 | protected function isDir(/*# string */ $realPath)/*# : bool */ |
||
77 | |||
78 | /** |
||
79 | * {@inheritDoc} |
||
80 | */ |
||
81 | protected function readDir( |
||
101 | |||
102 | /** |
||
103 | * {@inheritDoc} |
||
104 | */ |
||
105 | protected function openReadStream(/*# string */ $realPath) |
||
118 | |||
119 | /** |
||
120 | * {@inheritDoc} |
||
121 | */ |
||
122 | protected function readFile(/*# string */ $realPath) |
||
136 | |||
137 | /** |
||
138 | * {@inheritDoc} |
||
139 | */ |
||
140 | protected function getRealMeta(/*# string */ $realPath)/*# : array */ |
||
159 | |||
160 | /** |
||
161 | * {@inheritDoc} |
||
162 | */ |
||
163 | protected function fixPath()/*# : bool */ |
||
173 | |||
174 | /** |
||
175 | * {@inheritDoc} |
||
176 | */ |
||
177 | protected function writeStream( |
||
190 | |||
191 | /** |
||
192 | * {@inheritDoc} |
||
193 | */ |
||
194 | protected function writeFile( |
||
207 | |||
208 | /** |
||
209 | * Write meta data |
||
210 | * |
||
211 | * @param string $realPath |
||
212 | * @param array $meta |
||
213 | * @return bool |
||
214 | * @access protected |
||
215 | */ |
||
216 | protected function setRealMeta( |
||
229 | |||
230 | /** |
||
231 | * {@inheritDoc} |
||
232 | */ |
||
233 | protected function renameDir( |
||
239 | |||
240 | /** |
||
241 | * {@inheritDoc} |
||
242 | */ |
||
243 | protected function renameFile( |
||
249 | |||
250 | /** |
||
251 | * {@inheritDoc} |
||
252 | */ |
||
253 | protected function copyDir( |
||
274 | |||
275 | /** |
||
276 | * {@inheritDoc} |
||
277 | */ |
||
278 | protected function copyFile( |
||
284 | |||
285 | /** |
||
286 | * {@inheritDoc} |
||
287 | */ |
||
288 | protected function deleteDir(/*# string */ $realPath)/*# : bool */ |
||
307 | |||
308 | /** |
||
309 | * {@inheritDoc} |
||
310 | */ |
||
311 | protected function deleteFile(/*# string */ $realPath)/*# : bool */ |
||
315 | |||
316 | /** |
||
317 | * create directory |
||
318 | * |
||
319 | * @param string $dir |
||
320 | * @access protected |
||
321 | */ |
||
322 | protected function makeDirectory(/*# string */ $dir)/*# : bool */ |
||
339 | } |
||
340 |