Complex classes like Settings 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 Settings, and based on these observations, apply Extract Interface, too.
1 | <?php |
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20 | abstract class Settings |
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21 | { |
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22 | /** |
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23 | * The Settings array |
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24 | * |
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25 | * @var array |
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26 | */ |
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27 | protected $settings = null; |
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28 | |||
29 | /** |
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30 | * The name of the Settings table |
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31 | * |
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32 | * @var string |
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33 | */ |
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34 | protected $table = ''; |
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35 | |||
36 | /** |
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37 | * Global JaegerApp product settings |
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38 | * |
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39 | * @var array |
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40 | */ |
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41 | protected $_global_defaults = array( |
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42 | 'date_format' => 'M d, Y, h:i:sA', |
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43 | 'relative_time' => '1', |
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44 | 'enable_rest_api' => '0', |
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45 | 'api_key' => '', |
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46 | 'api_secret' => '', |
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47 | 'api_debug' => 0, |
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48 | 'license_number' => '', |
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49 | 'license_check' => 0, |
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50 | 'license_status' => '' |
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51 | ); |
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52 | |||
53 | /** |
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54 | * The settings keys that should be serialized for storage |
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55 | * |
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56 | * @var array |
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57 | */ |
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58 | protected $serialized = array(); |
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59 | |||
60 | /** |
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61 | * The settings keys that have a custom option available |
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62 | * |
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63 | * @var array |
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64 | */ |
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65 | protected $custom_options = array(); |
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66 | |||
67 | /** |
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68 | * The settings, if any, that should be encrypted for storage |
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69 | * |
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70 | * @var array |
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71 | */ |
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72 | protected $encrypted = array(); |
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73 | |||
74 | /** |
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75 | * The default settings storage variable |
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76 | * |
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77 | * @var array |
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78 | */ |
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79 | protected $defaults = array(); |
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80 | |||
81 | /** |
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82 | * The settings, if any, that should be exploded into arrays on storage |
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83 | * |
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84 | * @var array |
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85 | */ |
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86 | protected $new_lines = array(); |
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87 | |||
88 | /** |
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89 | * The file system based overrides if any |
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90 | * |
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91 | * Used to set configuration and settings through file based configuration |
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92 | * |
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93 | * @var array |
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94 | */ |
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95 | protected $overrides = array(); |
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96 | |||
97 | /** |
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98 | * The encryption object to use for storage |
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99 | * |
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100 | * @var \JaegerApp\Encrypt |
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101 | */ |
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102 | protected $encrypt = null; |
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103 | |||
104 | /** |
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105 | * The lanaguage instance |
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106 | * |
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107 | * @var \JaegerApp\Language |
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108 | */ |
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109 | protected $lang = null; |
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110 | |||
111 | /** |
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112 | * The database instance |
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113 | * |
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114 | * @var \JaegerApp\Db |
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115 | */ |
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116 | protected $db = null; |
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117 | |||
118 | /** |
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119 | * Sets it up |
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120 | * |
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121 | * @param \JaegerApp\Db $db |
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122 | * @param \JaegerApp\Language $lang |
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123 | */ |
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124 | public function __construct(\JaegerApp\Db $db, \JaegerApp\Language $lang) |
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129 | |||
130 | /** |
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131 | * Will validate the passed setting data for errors |
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132 | * |
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133 | * @param array $data The data to valiate |
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134 | * @param array $extra Any extra data to provide context for the $data |
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135 | */ |
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136 | abstract public function validate(array $data, array $extra = array()); |
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137 | |||
138 | /** |
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139 | * Sets the default settings values |
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140 | * |
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141 | * @param array $defaults |
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142 | * @return \JaegerApp\Settings |
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143 | */ |
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144 | public function setDefaults(array $defaults) |
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149 | |||
150 | /** |
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151 | * Returns the default settings |
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152 | * |
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153 | * @return array |
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154 | */ |
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155 | public function getDefaults() |
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159 | |||
160 | /** |
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161 | * Sets the table we're using |
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162 | * |
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163 | * @param string $table |
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164 | * @return \JaegerApp\Settings |
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165 | */ |
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166 | public function setTable($table) |
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171 | |||
172 | /** |
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173 | * Returns the Settings table name |
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174 | * |
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175 | * @return string |
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176 | */ |
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177 | public function getTable() |
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181 | |||
182 | /** |
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183 | * Returns the settings that have custom options |
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184 | * |
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185 | * @return array |
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186 | */ |
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187 | public function getCustomOptions() |
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191 | |||
192 | /** |
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193 | * Returns the available overrides |
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194 | * |
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195 | * @return array |
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196 | */ |
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197 | public function getOverrides() |
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201 | |||
202 | /** |
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203 | * Sets the overrides to use |
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204 | * |
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205 | * @param array $overrides |
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206 | * @return \JaegerApp\Settings |
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207 | */ |
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208 | public function setOverrides(array $overrides = array()) |
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213 | |||
214 | /** |
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215 | * Retrns the encryption object |
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216 | * |
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217 | * @return \JaegerApp\Encrypt |
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218 | */ |
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219 | public function getEncrypt() |
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223 | |||
224 | /** |
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225 | * Sets the encryption object we're using |
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226 | * |
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227 | * @param \JaegerApp\Encrypt $encrypt |
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228 | * @return \JaegerApp\Settings |
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229 | */ |
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230 | public function setEncrypt(\JaegerApp\Encrypt $encrypt) |
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235 | |||
236 | /** |
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237 | * Sets the encrypted setting keys |
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238 | * |
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239 | * @param array $encrypted |
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240 | * @return \JaegerApp\Settings |
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241 | */ |
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242 | public function setEncrypted(array $encrypted = array()) |
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247 | |||
248 | /** |
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249 | * Returns the settings keys to be encrypted |
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250 | * |
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251 | * @return \JaegerApp\array |
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252 | */ |
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253 | public function getEncrypted() |
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257 | |||
258 | /** |
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259 | * Returns the serialized setting options |
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260 | * |
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261 | * @return array |
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262 | */ |
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263 | public function getSerialized() |
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267 | |||
268 | /** |
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269 | * Sets the serialized setting options |
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270 | * |
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271 | * @param array $serialized |
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272 | * @return \JaegerApp\Settings |
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273 | */ |
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274 | public function setSerialized(array $serialized = array()) |
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279 | |||
280 | /** |
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281 | * Returns the new lined system settings |
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282 | * |
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283 | * @return array |
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284 | */ |
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285 | public function getNewLines() |
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289 | |||
290 | /** |
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291 | * Sets the new lined system settings |
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292 | * |
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293 | * @param array $nl |
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294 | * @return \mithra62\Settings |
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295 | */ |
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296 | public function setNewLines(array $nl = array()) |
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301 | |||
302 | /** |
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303 | * Saves the settings to the database |
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304 | * |
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305 | * @param array $data |
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306 | */ |
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307 | public function update(array $data) |
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333 | |||
334 | /** |
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335 | * Updates the value of a setting |
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336 | * |
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337 | * @param string $key |
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338 | * @param string $value |
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339 | */ |
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340 | public function updateSetting($key, $value) |
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357 | |||
358 | /** |
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359 | * Verifies that a submitted setting is valid and exists. |
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360 | * If it's valid but doesn't exist it is created. |
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361 | * |
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362 | * @param string $setting |
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363 | */ |
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364 | private function checkSetting($setting) |
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374 | |||
375 | /** |
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376 | * Returns the system settings |
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377 | * |
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378 | * @return array |
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379 | */ |
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380 | public function get($force = false) |
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449 | |||
450 | /** |
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451 | * Checks the database for a setting key |
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452 | * |
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453 | * @param string $setting |
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454 | */ |
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455 | public function getSetting($setting) |
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464 | |||
465 | /** |
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466 | * Adds a setting to the databse |
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467 | * |
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468 | * @param string $setting |
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469 | */ |
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470 | public function addSetting($setting) |
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482 | } |
If an expression can have both
false
, andnull
as possible values. It is generally a good practice to always use strict comparison to clearly distinguish between those two values.