Complex classes like SortedSets 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 SortedSets, and based on these observations, apply Extract Interface, too.
1 | <?php |
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9 | trait SortedSets |
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10 | { |
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11 | /* |
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12 | * Available Set Operations |
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13 | */ |
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14 | protected $SET_OPERATIONS = ['SUM', 'MIN', 'MAX']; |
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15 | |||
16 | |||
17 | /** |
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18 | * Block until Redis can pop the highest or lowest scoring members from one |
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19 | * or more ZSETs. There are two commands (BZPOPMIN and BZPOPMAX for popping |
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20 | * the lowest and highest scoring elements respectively.) |
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21 | * |
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22 | * Note: Calling these functions with an array of keys or with a variable |
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23 | * number of arguments is functionally identical. |
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24 | * |
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25 | * See: https://redis.io/commands/bzpopmin. |
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26 | * See: https://redis.io/commands/bzpopmax. |
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27 | * |
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28 | * @param array $keys The ZSETs you wish to run against |
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29 | * @param int $timeout [description] |
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30 | * @param bool|boolean $max [description] |
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31 | * |
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32 | * @return array Either an array with the key member and score |
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33 | * of the highest or lowest element or an empty |
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34 | * array if the timeout was reached without an |
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35 | * element to pop. |
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36 | */ |
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37 | public function bzPop(array $keys, int $timeout, bool $max = false): array |
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43 | |||
44 | /** |
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45 | * Block until Redis can pop the lowest scoring members from one or more ZSETs. |
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46 | * |
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47 | * See: https://redis.io/commands/bzpopmin. |
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48 | * |
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49 | * @param array $keys The ZSETs you wish to run against |
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50 | * @param int $timeout [description] |
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51 | * |
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52 | * @return array Either an array with the key member and score |
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53 | * of the highest or lowest element or an empty |
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54 | * array if the timeout was reached without an |
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55 | * element to pop. |
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56 | */ |
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57 | public function bzPopMin(array $keys, int $timeout): array |
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61 | |||
62 | /** |
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63 | * Block until Redis can pop the lowest scoring members from one or more ZSETs. |
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64 | * |
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65 | * See: https://redis.io/commands/bzpopmax. |
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66 | * |
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67 | * @param array $keys The ZSETs you wish to run against |
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68 | * @param int $timeout [description] |
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69 | * |
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70 | * @return array Either an array with the key member and score |
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71 | * of the highest or lowest element or an empty |
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72 | * array if the timeout was reached without an |
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73 | * element to pop. |
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74 | */ |
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75 | public function bzPopMax(array $keys, int $timeout): array |
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79 | |||
80 | |||
81 | /** |
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82 | * Add one or more members to a sorted set or update its score if it |
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83 | * already exists. |
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84 | * |
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85 | * See: https://redis.io/commands/zadd. |
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86 | * |
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87 | * @param string $key |
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88 | * @param float $score |
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89 | * @param mixed] $member |
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90 | * |
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91 | * @return int 1 if the element is added. 0 otherwise. |
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92 | */ |
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93 | public function zAdd(string $key, float $score, $member): int |
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97 | |||
98 | |||
99 | /** |
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100 | * Get the number of members in a sorted set. |
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101 | * See: https://redis.io/commands/zcard. |
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102 | * |
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103 | * @param string $key |
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104 | * |
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105 | * @return int The Set's cardinality |
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106 | */ |
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107 | public function zCard(string $key): int |
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111 | |||
112 | |||
113 | /** |
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114 | * Get the number of members in a sorted set. |
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115 | * |
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116 | * Note: zSize is an alias for zCard and will be removed in future |
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117 | * versions of phpredis. |
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118 | * |
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119 | * See: https://redis.io/commands/zcard. |
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120 | * |
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121 | * @param string $key |
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122 | * |
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123 | * @return int The Set's cardinality |
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124 | */ |
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125 | public function zSize(string $key): int |
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129 | |||
130 | |||
131 | /** |
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132 | * Returns the number of elements of the sorted set stored at the specified |
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133 | * key which have scores in the range [start, end]. Adding a parenthesis |
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134 | * before start or end excludes it from the range. +inf and -inf are also |
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135 | * valid limits. |
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136 | * |
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137 | * See: https://redis.io/commands/zcount. |
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138 | * |
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139 | * @param string $key |
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140 | * @param mixed|int|string $start |
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141 | * @param mixed|int|string $end |
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142 | * |
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143 | * @return int the size of a corresponding zRangeByScore. |
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144 | */ |
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145 | public function zCount(string $key, $start, $end): int |
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149 | |||
150 | |||
151 | /** |
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152 | * Increments the score of a member from a sorted set by a given amount. |
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153 | * |
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154 | * See: https://redis.io/commands/zincrby. |
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155 | * |
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156 | * @param string $key |
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157 | * @param float $value (double) value that will be added to the |
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158 | * member's score). |
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159 | * @param string $member |
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160 | * |
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161 | * @return float the new value |
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162 | */ |
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163 | public function zIncrBy(string $key, float $value, $member): float |
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167 | |||
168 | |||
169 | /** |
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170 | * Creates an intersection of sorted sets given in second argument. |
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171 | * The result of the union will be stored in the sorted set defined by the |
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172 | * first argument. |
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173 | * |
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174 | * The third optional argument defines weights to apply to the sorted sets |
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175 | * in input. In this case, the weights will be multiplied by the score of |
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176 | * each element in the sorted set before applying the aggregation. The |
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177 | * forth argument defines the AGGREGATE option which specify how the |
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178 | * results of the union are aggregated. |
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179 | * |
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180 | * See: https://redis.io/commands/zinterstore. |
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181 | * |
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182 | * @param string $keyOutput |
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183 | * @param array $arrayZSetKeys |
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184 | * @param array $arrayWeights |
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185 | * @param string $aggregateFunction Either "SUM", "MIN", or "MAX": |
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186 | * defines the behaviour to use on |
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187 | * duplicate entries during the |
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188 | * zInterStore. |
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189 | * |
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190 | * @return int The number of values in the new |
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191 | * sorted set. |
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192 | */ |
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193 | public function zInterStore( |
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218 | |||
219 | |||
220 | /** |
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221 | * Creates an intersection of sorted sets given in second argument. |
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222 | * The result of the union will be stored in the sorted set defined by the |
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223 | * first argument. |
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224 | * |
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225 | * The third optional argument defines weights to apply to the sorted sets |
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226 | * in input. In this case, the weights will be multiplied by the score of |
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227 | * each element in the sorted set before applying the aggregation. The |
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228 | * forth argument defines the AGGREGATE option which specify how the |
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229 | * results of the union are aggregated. |
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230 | * |
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231 | * Note: zInter is an alias for zinterstore and will be removed in future |
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232 | * versions of phpredis. |
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233 | * |
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234 | * See: https://redis.io/commands/zinterstore. |
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235 | * |
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236 | * @param string $keyOutput |
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237 | * @param array $arrayZSetKeys |
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238 | * @param array $arrayWeights |
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239 | * @param string $aggregateFunction Either "SUM", "MIN", or "MAX": |
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240 | * defines the behaviour to use on |
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241 | * duplicate entries during the |
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242 | * zInterStore. |
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243 | * |
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244 | * @return int The number of values in the new |
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245 | * sorted set. |
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246 | */ |
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247 | public function zInter( |
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272 | |||
273 | |||
274 | /** |
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275 | * Can pop the highest or lowest scoring members from one ZSETs. |
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276 | * There are two commands (ZPOPMIN and ZPOPMAX for popping the lowest and |
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277 | * highest scoring elements respectively.). |
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278 | * |
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279 | * See: https://redis.io/commands/zpopmin. |
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280 | * See: https://redis.io/commands/zpopmax. |
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281 | * |
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282 | * @param string $key |
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283 | * @param int|integer $count |
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284 | * @param bool|boolean $max |
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285 | * |
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286 | * @return array Either an array with the key member and |
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287 | * score of the highest or lowest element |
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288 | * or an empty array if there is no element |
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289 | * available. |
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290 | */ |
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291 | public function zPop(string $key, int $count = 1, bool $max = true): array |
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295 | |||
296 | |||
297 | /** |
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298 | * Can pop the lowest scoring members from one ZSETs. |
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299 | * |
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300 | * See: https://redis.io/commands/zpopmin. |
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301 | * |
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302 | * @param string $key |
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303 | * @param int|integer $count |
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304 | * |
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305 | * @return array Either an array with the key member and |
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306 | * score of the highest or lowest element |
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307 | * or an empty array if there is no element |
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308 | * available. |
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309 | */ |
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310 | public function zPopMin(string $key, int $count = 1): array |
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314 | |||
315 | |||
316 | /** |
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317 | * Can pop the highest scoring members from one ZSETs. |
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318 | * |
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319 | * See: https://redis.io/commands/zpopmax. |
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320 | * |
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321 | * @param string $key |
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322 | * @param int|integer $count |
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323 | * |
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324 | * @return array Either an array with the key member and |
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325 | * score of the highest or lowest element |
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326 | * or an empty array if there is no element |
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327 | * available. |
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328 | */ |
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329 | public function zPopMax(string $key, int $count = 1): array |
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333 | |||
334 | |||
335 | /** |
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336 | * Returns a range of elements from the ordered set stored at the specified |
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337 | * key, with values in the range [start, end]. |
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338 | * |
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339 | * Start and stop are interpreted as zero-based indices: |
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340 | * 0 the first element, 1 the second ... |
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341 | * -1 the last element, -2 the penultimate ... |
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342 | * |
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343 | * See: https://redis.io/commands/zrange. |
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344 | * |
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345 | * @param string $key |
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346 | * @param int|integer $start |
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347 | * @param int|integer $end |
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348 | * @param bool|boolean $withScores |
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349 | * |
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350 | * @return array Array containing the values in specified range. |
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351 | */ |
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352 | public function zRange(string $key, int $start = 0, int $end = -1, bool $withScores = false): array |
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356 | |||
357 | |||
358 | /** |
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359 | * Returns the elements of the sorted set stored at the specified key which |
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360 | * have scores in the range [start,end]. Adding a parenthesis before start |
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361 | * or end excludes it from the range. +inf and -inf are also valid limits. |
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362 | * |
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363 | * See: https://redis.io/commands/zrangebyscore. |
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364 | * |
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365 | * @param string $key |
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366 | * @param mixed|int|string $start |
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367 | * @param mixed|int|string $end |
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368 | * @param array|null $options Two options are available: |
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369 | * - withscores => TRUE, |
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370 | * and limit => [$offset, $count] |
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371 | * |
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372 | * @return array Array containing the values in |
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373 | * specified range. |
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374 | */ |
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375 | public function zRangeByScore(string $key, $start, $end, ?array $options = null): array |
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389 | |||
390 | |||
391 | /** |
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392 | * Returns the elements of the sorted set stored at the specified key which |
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393 | * have scores in the range [start,end]. Adding a parenthesis before start |
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394 | * or end excludes it from the range. +inf and -inf are also valid limits. |
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395 | * |
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396 | * zRevRangeByScore returns the same items in reverse order, when the start |
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397 | * and end parameters are swapped. |
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398 | * |
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399 | * See: https://redis.io/commands/zrevrangebyscore. |
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400 | * |
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401 | * @param string $key |
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402 | * @param mixed|int|string $start |
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403 | * @param mixed|int|string $end |
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404 | * @param array|null $options Two options are available: |
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405 | * - withscores => TRUE, |
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406 | * and limit => [$offset, $count] |
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407 | * |
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408 | * @return array Array containing the values in |
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409 | * specified range. |
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410 | */ |
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411 | public function zRevRangeByScore(string $key, $start, $end, ?array $options = null): array |
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425 | |||
426 | |||
427 | /** |
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428 | * Returns a lexicographical range of members in a sorted set, assuming the |
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429 | * members have the same score. The min and max values are required to start |
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430 | * with '(' (exclusive), '[' (inclusive), or be exactly the values |
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431 | * '-' (negative inf) or '+' (positive inf). |
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432 | * |
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433 | * The command must be called with either three or five arguments or will |
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434 | * return FALSE. |
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435 | * |
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436 | * See: https://redis.io/commands/zrangebylex |
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437 | * |
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438 | * @param string $key The ZSET you wish to run against |
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439 | * @param mixed|string $min The minimum alphanumeric value you wish to get |
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440 | * @param mixed|string $max The maximum alphanumeric value you wish to get |
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441 | * @param int|null $offset Optional argument if you wish to start |
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442 | * somewhere other than the first element. |
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443 | * @param int|null $limit Optional argument if you wish to limit the |
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444 | * number of elements returned. |
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445 | * |
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446 | * @return array Array containing the values in the specified |
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447 | * range. |
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448 | */ |
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449 | public function zRangeByLex(string $key, $min, $max, ?int $offset = null, ?int $limit = null): array |
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465 | |||
466 | |||
467 | /** |
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468 | * Returns the rank of a given member in the specified sorted set, starting |
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469 | * at 0 for the item with the smallest score. |
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470 | * |
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471 | * See: https://redis.io/commands/zrank. |
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472 | * |
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473 | * @param string $key The ZSET you wish to run against |
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474 | * @param mixed|string|int|float $member The member to look for |
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475 | * |
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476 | * @return int The member's rank position |
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477 | */ |
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478 | public function zRank(string $key, $member): int |
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482 | |||
483 | |||
484 | /** |
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485 | * Returns the rank of a given member in the specified sorted set, starting |
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486 | * at 0 for the item with the smallest score. |
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487 | * |
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488 | * zRevRank starts at 0 for the item with the largest score. |
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489 | * |
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490 | * See: https://redis.io/commands/zrevrank. |
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491 | * |
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492 | * @param string $key The ZSET you wish to run against |
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493 | * @param mixed|string|int|float $member The member to look for |
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494 | * |
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495 | * @return int The member's rank position |
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496 | */ |
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497 | public function zRevRank(string $key, $member): int |
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501 | |||
502 | |||
503 | /** |
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504 | * Delete one or more members from a sorted set. |
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505 | * |
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506 | * See: https://redis.io/commands/zrem. |
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507 | * |
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508 | * @param string $key The ZSET you wish to run against |
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509 | * @param splay $members Member(s) to be removed from the ZSET |
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510 | * |
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511 | * @return int The number of members deleted. |
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512 | */ |
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513 | public function zRem(string $key, ...$members): int |
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517 | |||
518 | |||
519 | /** |
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520 | * Delete one or more members from a sorted set. |
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521 | * |
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522 | * Note: zDelete and zRemove are an alias for zRem and will be removed |
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523 | * in future versions of phpredis. |
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524 | * |
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525 | * See: https://redis.io/commands/zrem. |
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526 | * |
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527 | * @param string $key The ZSET you wish to run against |
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528 | * @param splay $members Member(s) to be removed from the ZSET |
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529 | * |
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530 | * @return int The number of members deleted. |
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531 | */ |
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532 | public function zDelete(string $key, ...$members): int |
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536 | |||
537 | |||
538 | /** |
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539 | * Delete one or more members from a sorted set. |
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540 | * |
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541 | * Note: zDelete and zRemove are an alias for zRem and will be removed |
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542 | * in future versions of phpredis. |
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543 | * |
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544 | * See: https://redis.io/commands/zrem. |
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545 | * |
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546 | * @param string $key The ZSET you wish to run against |
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547 | * @param splay $members Member(s) to be removed from the ZSET |
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548 | * |
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549 | * @return int The number of members deleted. |
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550 | */ |
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551 | public function zRemove(string $key, ...$members): int |
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555 | |||
556 | |||
557 | /** |
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558 | * Deletes the elements of the sorted set stored at the specified key which |
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559 | * have rank in the range [start,end]. |
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560 | * |
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561 | * See: https://redis.io/commands/zremrangebyrank. |
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562 | * |
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563 | * @param string $key The ZSET you wish to run against |
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564 | * @param int $start |
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565 | * @param int $end |
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566 | * |
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567 | * @return int The number of values deleted from the sorted set |
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568 | */ |
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569 | public function zRemRangeByRank(string $key, int $start, int $end): int |
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577 | |||
578 | |||
579 | /** |
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580 | * Deletes the elements of the sorted set stored at the specified key which |
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581 | * have rank in the range [start,end]. |
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582 | * |
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583 | * Note: zDeleteRangeByRank is an alias for zRemRangeByRank and will be |
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584 | * removed in future versions of phpredis. |
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585 | * |
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586 | * See: https://redis.io/commands/zremrangebyrank. |
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587 | * |
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588 | * @param string $key The ZSET you wish to run against |
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589 | * @param int $start |
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590 | * @param int $end |
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591 | * |
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592 | * @return int The number of values deleted from the sorted set |
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593 | */ |
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594 | public function zDeleteRangeByRank(string $key, int $start, int $end): int |
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602 | |||
603 | |||
604 | /** |
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605 | * Deletes the elements of the sorted set stored at the specified key which |
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606 | * have scores in the range [start,end]. |
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607 | * |
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608 | * See: https://redis.io/commands/zremrangebyscore. |
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609 | * |
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610 | * @param string $key The ZSET you wish to run against |
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611 | * @param mixed|float|string $start double or "+inf" or "-inf" string |
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612 | * @param mixed|float|string $end double or "+inf" or "-inf" string |
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613 | * |
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614 | * @return The number of values deleted from the sorted set |
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615 | */ |
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616 | public function zRemRangeByScore(string $key, $start, $end): int |
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628 | |||
629 | |||
630 | /** |
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631 | * Deletes the elements of the sorted set stored at the specified key which |
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632 | * have scores in the range [start,end]. |
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633 | * |
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634 | * Note: zDeleteRangeByScore and zRemoveRangeByScore are an alias for |
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635 | * zRemRangeByScore and will be removed in future versions of phpredis. |
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636 | * |
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637 | * See: https://redis.io/commands/zremrangebyscore. |
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638 | * |
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639 | * @param string $key The ZSET you wish to run against |
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640 | * @param mixed|float|string $start double or "+inf" or "-inf" string |
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641 | * @param mixed|float|string $end double or "+inf" or "-inf" string |
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642 | * |
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643 | * @return The number of values deleted from the sorted set |
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644 | */ |
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645 | public function zDeleteRangeByScore(string $key, $start, $end): int |
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657 | |||
658 | |||
659 | /** |
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660 | * Deletes the elements of the sorted set stored at the specified key which |
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661 | * have scores in the range [start,end]. |
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662 | * |
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663 | * Note: zDeleteRangeByScore and zRemoveRangeByScore are an alias for |
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664 | * zRemRangeByScore and will be removed in future versions of phpredis. |
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665 | * |
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666 | * See: https://redis.io/commands/zremrangebyscore. |
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667 | * |
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668 | * @param string $key The ZSET you wish to run against |
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669 | * @param mixed|float|string $start double or "+inf" or "-inf" string |
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670 | * @param mixed|float|string $end double or "+inf" or "-inf" string |
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671 | * |
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672 | * @return The number of values deleted from the sorted set |
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673 | */ |
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674 | public function zRemoveRangeByScore(string $key, $start, $end): int |
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686 | |||
687 | |||
688 | /** |
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689 | * Returns the elements of the sorted set stored at the specified key in |
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690 | * the range [start, end] in reverse order. start and stop are interpreted |
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691 | * as zero-based indices: |
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692 | * 0 the first element, 1 the second ... |
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693 | * -1 the last element, -2 the penultimate ... |
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694 | * |
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695 | * See: https://redis.io/commands/zrevrange. |
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696 | * |
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697 | * @param string $key The ZSET you wish to run against |
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698 | * @param int $start 0 the first element, 1 the second ... |
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699 | * @param int $end -1 the last element, -2 the penultimate ... |
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700 | * @param bool|boolean $withScores false No Scores | true Scores in |
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701 | * associative array |
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702 | * |
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703 | * @return array Array containing the values in |
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704 | * specified range. |
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705 | */ |
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706 | public function zRevRange(string $key, int $start = 0, int $end = -1, bool $withScores = false): array |
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710 | |||
711 | |||
712 | /** |
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713 | * Returns the score of a given member in the specified sorted set. |
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714 | * |
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715 | * @param string $key The ZSET you wish to run against. |
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716 | * @param mixed|string|float|int $member |
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717 | * |
||
718 | * @return float The Score associated with the Member. |
||
719 | */ |
||
720 | public function zScore(string $key, $member): float |
||
724 | |||
725 | |||
726 | /** |
||
727 | * Creates an union of sorted sets given in second argument. |
||
728 | * The result of the union will be stored in the sorted set defined by the |
||
729 | * first argument. |
||
730 | * |
||
731 | * The third optional argument defines weights to apply to the sorted sets |
||
732 | * in input. In this case, the weights will be multiplied by the score of |
||
733 | * each element in the sorted set before applying the aggregation. The |
||
734 | * forth argument defines the AGGREGATE option which specify how the |
||
735 | * results of the union are aggregated. |
||
736 | * |
||
737 | * See: https://redis.io/commands/zunionstore. |
||
738 | * |
||
739 | * @param string $keyOutput The ZSET you wish to store the result. |
||
740 | * @param array $arrayZSetKeys |
||
741 | * @param array $arrayWeights |
||
742 | * @param string $aggregateFunction Either "SUM", "MIN", or "MAX": |
||
743 | * defines the behaviour to use on |
||
744 | * duplicate entries during the |
||
745 | * zunionstore. |
||
746 | * |
||
747 | * @return [type] |
||
748 | */ |
||
749 | public function zUnionStore( |
||
773 | |||
774 | |||
775 | /** |
||
776 | * Creates an union of sorted sets given in second argument. |
||
777 | * The result of the union will be stored in the sorted set defined by the |
||
778 | * first argument. |
||
779 | * |
||
780 | * The third optional argument defines weights to apply to the sorted sets |
||
781 | * in input. In this case, the weights will be multiplied by the score of |
||
782 | * each element in the sorted set before applying the aggregation. The |
||
783 | * forth argument defines the AGGREGATE option which specify how the |
||
784 | * results of the union are aggregated. |
||
785 | * |
||
786 | * Note: zUnion is an alias for zunionstore and will be removed in future |
||
787 | * versions of phpredis. |
||
788 | * |
||
789 | * See: https://redis.io/commands/zunionstore. |
||
790 | * |
||
791 | * @param string $keyOutput The ZSET you wish to store the result. |
||
792 | * @param array $arrayZSetKeys |
||
793 | * @param array $arrayWeights |
||
794 | * @param string $aggregateFunction Either "SUM", "MIN", or "MAX": |
||
795 | * defines the behaviour to use on |
||
796 | * duplicate entries during the |
||
797 | * zunionstore. |
||
798 | * |
||
799 | * @return [type] |
||
800 | */ |
||
801 | public function zUnion( |
||
825 | |||
826 | |||
827 | /** |
||
828 | * Scan a sorted set for members, with optional pattern and count. |
||
829 | * |
||
830 | * @param string $key The ZSET you wish to run against. |
||
831 | * @param int &$iterator Long (reference), initialized to NULL |
||
832 | * @param string $pattern String (optional), the pattern to match |
||
833 | * @param int|integer $count How many keys to return per iteration |
||
834 | * (Redis might return a different number). |
||
835 | * |
||
836 | * @return Array, boolean PHPRedis will return matching keys from Redis, |
||
837 | * or FALSE when iteration is complete |
||
838 | */ |
||
839 | public function zScan(string $key, ?int &$iterator, string $pattern = '*', int $count = 10) |
||
843 | |||
844 | |||
845 | /** |
||
846 | * ======================================================================== |
||
847 | * H E L P E R M E T H O D S |
||
848 | * ======================================================================== |
||
849 | */ |
||
850 | |||
851 | |||
852 | /** |
||
853 | * Validate Lex Params |
||
854 | * |
||
855 | * @param splat $params |
||
856 | * |
||
857 | * @return bool |
||
858 | */ |
||
859 | protected function _validateLexParams(...$params) |
||
863 | } |
||
864 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: