top-think /
framework
| Total Complexity | 106 |
| Total Lines | 531 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Collection 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.
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 Collection, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class Collection implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable |
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| 21 | { |
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| 22 | /** |
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| 23 | * 数据集数据 |
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| 24 | * @var array |
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| 25 | */ |
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| 26 | protected $items = []; |
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| 27 | |||
| 28 | public function __construct($items = []) |
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| 29 | { |
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| 30 | $this->items = $this->convertToArray($items); |
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| 31 | } |
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| 32 | |||
| 33 | public static function make($items = []) |
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| 34 | { |
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| 35 | return new static($items); |
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| 36 | } |
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| 37 | |||
| 38 | /** |
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| 39 | * 是否为空 |
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| 40 | * @access public |
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| 41 | * @return bool |
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| 42 | */ |
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| 43 | public function isEmpty() |
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| 44 | { |
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| 45 | return empty($this->items); |
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| 46 | } |
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| 47 | |||
| 48 | public function toArray() |
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| 49 | { |
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| 50 | return array_map(function ($value) { |
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| 51 | return ($value instanceof Model || $value instanceof self) ? $value->toArray() : $value; |
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| 52 | }, $this->items); |
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| 53 | } |
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| 54 | |||
| 55 | public function all() |
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| 56 | { |
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| 57 | return $this->items; |
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| 58 | } |
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| 59 | |||
| 60 | /** |
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| 61 | * 合并数组 |
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| 62 | * |
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| 63 | * @access public |
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| 64 | * @param mixed $items |
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| 65 | * @return static |
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| 66 | */ |
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| 67 | public function merge($items) |
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| 68 | { |
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| 69 | return new static(array_merge($this->items, $this->convertToArray($items))); |
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| 70 | } |
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| 71 | |||
| 72 | /** |
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| 73 | * 交换数组中的键和值 |
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| 74 | * |
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| 75 | * @access public |
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| 76 | * @return static |
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| 77 | */ |
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| 78 | public function flip() |
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| 79 | { |
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| 80 | return new static(array_flip($this->items)); |
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| 81 | } |
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| 82 | |||
| 83 | /** |
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| 84 | * 按指定键整理数据 |
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| 85 | * |
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| 86 | * @access public |
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| 87 | * @param mixed $items 数据 |
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| 88 | * @param string $indexKey 键名 |
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| 89 | * @return array |
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| 90 | */ |
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| 91 | public function dictionary($items = null, &$indexKey = null) |
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| 92 | { |
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| 93 | if ($items instanceof self || $items instanceof Paginator) { |
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| 94 | $items = $items->all(); |
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| 95 | } |
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| 96 | |||
| 97 | $items = is_null($items) ? $this->items : $items; |
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| 98 | |||
| 99 | if ($items && empty($indexKey)) { |
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| 100 | $indexKey = is_array($items[0]) ? 'id' : $items[0]->getPk(); |
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| 101 | } |
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| 102 | |||
| 103 | if (isset($indexKey) && is_string($indexKey)) { |
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| 104 | return array_column($items, null, $indexKey); |
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| 105 | } |
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| 106 | |||
| 107 | return $items; |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * 比较数组，返回差集 |
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| 112 | * |
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| 113 | * @access public |
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| 114 | * @param mixed $items 数据 |
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| 115 | * @param string $indexKey 指定比较的键名 |
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| 116 | * @return static |
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| 117 | */ |
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| 118 | public function diff($items, $indexKey = null) |
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| 119 | { |
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| 120 | if ($this->isEmpty() || is_scalar($this->items[0])) { |
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| 121 | return new static(array_diff($this->items, $this->convertToArray($items))); |
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| 122 | } |
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| 123 | |||
| 124 | $diff = []; |
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| 125 | $dictionary = $this->dictionary($items, $indexKey); |
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| 126 | |||
| 127 | if (is_string($indexKey)) { |
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| 128 | foreach ($this->items as $item) { |
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| 129 | if (!isset($dictionary[$item[$indexKey]])) { |
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| 130 | $diff[] = $item; |
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| 131 | } |
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| 132 | } |
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| 133 | } |
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| 134 | |||
| 135 | return new static($diff); |
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| 136 | } |
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| 137 | |||
| 138 | /** |
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| 139 | * 比较数组，返回交集 |
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| 140 | * |
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| 141 | * @access public |
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| 142 | * @param mixed $items 数据 |
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| 143 | * @param string $indexKey 指定比较的键名 |
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| 144 | * @return static |
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| 145 | */ |
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| 146 | public function intersect($items, $indexKey = null) |
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| 147 | { |
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| 148 | if ($this->isEmpty() || is_scalar($this->items[0])) { |
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| 149 | return new static(array_diff($this->items, $this->convertToArray($items))); |
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| 150 | } |
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| 151 | |||
| 152 | $intersect = []; |
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| 153 | $dictionary = $this->dictionary($items, $indexKey); |
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| 154 | |||
| 155 | if (is_string($indexKey)) { |
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| 156 | foreach ($this->items as $item) { |
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| 157 | if (isset($dictionary[$item[$indexKey]])) { |
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| 158 | $intersect[] = $item; |
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| 159 | } |
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| 160 | } |
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| 161 | } |
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| 162 | |||
| 163 | return new static($intersect); |
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| 164 | } |
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| 165 | |||
| 166 | /** |
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| 167 | * 返回数组中所有的键名 |
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| 168 | * |
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| 169 | * @access public |
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| 170 | * @return array |
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| 171 | */ |
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| 172 | public function keys() |
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| 173 | { |
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| 174 | $current = current($this->items); |
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| 175 | |||
| 176 | if (is_scalar($current)) { |
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| 177 | $array = $this->items; |
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| 178 | } elseif (is_array($current)) { |
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| 179 | $array = $current; |
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| 180 | } else { |
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| 181 | $array = $current->toArray(); |
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| 182 | } |
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| 183 | |||
| 184 | return array_keys($array); |
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| 185 | } |
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| 186 | |||
| 187 | /** |
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| 188 | * 删除数组的最后一个元素（出栈） |
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| 189 | * |
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| 190 | * @access public |
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| 191 | * @return mixed |
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| 192 | */ |
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| 193 | public function pop() |
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| 194 | { |
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| 195 | return array_pop($this->items); |
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| 196 | } |
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| 197 | |||
| 198 | /** |
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| 199 | * 通过使用用户自定义函数，以字符串返回数组 |
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| 200 | * |
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| 201 | * @access public |
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| 202 | * @param callable $callback |
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| 203 | * @param mixed $initial |
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| 204 | * @return mixed |
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| 205 | */ |
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| 206 | public function reduce(callable $callback, $initial = null) |
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| 207 | { |
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| 208 | return array_reduce($this->items, $callback, $initial); |
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| 209 | } |
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| 210 | |||
| 211 | /** |
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| 212 | * 以相反的顺序返回数组。 |
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| 213 | * |
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| 214 | * @access public |
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| 215 | * @return static |
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| 216 | */ |
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| 217 | public function reverse() |
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| 218 | { |
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| 219 | return new static(array_reverse($this->items)); |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * 删除数组中首个元素，并返回被删除元素的值 |
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| 224 | * |
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| 225 | * @access public |
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| 226 | * @return mixed |
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| 227 | */ |
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| 228 | public function shift() |
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| 229 | { |
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| 230 | return array_shift($this->items); |
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| 231 | } |
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| 232 | |||
| 233 | /** |
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| 234 | * 在数组结尾插入一个元素 |
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| 235 | * @access public |
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| 236 | * @param mixed $value |
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| 237 | * @param mixed $key |
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| 238 | * @return void |
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| 239 | */ |
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| 240 | public function push($value, $key = null) |
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| 241 | { |
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| 242 | if (is_null($key)) { |
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| 243 | $this->items[] = $value; |
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| 244 | } else { |
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| 245 | $this->items[$key] = $value; |
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| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | /** |
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| 250 | * 把一个数组分割为新的数组块. |
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| 251 | * |
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| 252 | * @access public |
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| 253 | * @param int $size |
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| 254 | * @param bool $preserveKeys |
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| 255 | * @return static |
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| 256 | */ |
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| 257 | public function chunk($size, $preserveKeys = false) |
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| 258 | { |
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| 259 | $chunks = []; |
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| 260 | |||
| 261 | foreach (array_chunk($this->items, $size, $preserveKeys) as $chunk) { |
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| 262 | $chunks[] = new static($chunk); |
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| 263 | } |
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| 264 | |||
| 265 | return new static($chunks); |
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| 266 | } |
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| 267 | |||
| 268 | /** |
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| 269 | * 在数组开头插入一个元素 |
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| 270 | * @access public |
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| 271 | * @param mixed $value |
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| 272 | * @param mixed $key |
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| 273 | * @return void |
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| 274 | */ |
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| 275 | public function unshift($value, $key = null) |
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| 276 | { |
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| 277 | if (is_null($key)) { |
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| 278 | array_unshift($this->items, $value); |
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| 279 | } else { |
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| 280 | $this->items = [$key => $value] + $this->items; |
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| 281 | } |
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| 282 | } |
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| 283 | |||
| 284 | /** |
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| 285 | * 给每个元素执行个回调 |
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| 286 | * |
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| 287 | * @access public |
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| 288 | * @param callable $callback |
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| 289 | * @return $this |
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| 290 | */ |
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| 291 | public function each(callable $callback) |
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| 292 | { |
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| 293 | foreach ($this->items as $key => $item) { |
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| 294 | $result = $callback($item, $key); |
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| 295 | |||
| 296 | if (false === $result) { |
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| 297 | break; |
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| 298 | } elseif (!is_object($item)) { |
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| 299 | $this->items[$key] = $result; |
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| 300 | } |
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| 301 | } |
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| 302 | |||
| 303 | return $this; |
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| 304 | } |
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| 305 | |||
| 306 | /** |
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| 307 | * 用回调函数处理数组中的元素 |
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| 308 | * @access public |
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| 309 | * @param callable|null $callback |
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| 310 | * @return static |
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| 311 | */ |
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| 312 | public function map(callable $callback) |
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| 313 | { |
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| 314 | return new static(array_map($callback, $this->items)); |
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| 315 | } |
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| 316 | |||
| 317 | /** |
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| 318 | * 用回调函数过滤数组中的元素 |
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| 319 | * @access public |
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| 320 | * @param callable|null $callback |
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| 321 | * @return static |
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| 322 | */ |
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| 323 | public function filter(callable $callback = null) |
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| 324 | { |
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| 325 | if ($callback) { |
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| 326 | return new static(array_filter($this->items, $callback)); |
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| 327 | } |
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| 328 | |||
| 329 | return new static(array_filter($this->items)); |
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| 330 | } |
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| 331 | |||
| 332 | /** |
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| 333 | * 根据字段条件过滤数组中的元素 |
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| 334 | * @access public |
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| 335 | * @param string $field 字段名 |
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| 336 | * @param mixed $operator 操作符 |
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| 337 | * @param mixed $value 数据 |
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| 338 | * @return static |
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| 339 | */ |
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| 340 | public function where($field, $operator, $value = null) |
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| 341 | { |
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| 342 | if (is_null($value)) { |
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| 343 | $value = $operator; |
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| 344 | $operator = '='; |
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| 345 | } |
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| 346 | |||
| 347 | return $this->filter(function ($data) use ($field, $operator, $value) { |
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| 348 | if (strpos($field, '.')) { |
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| 349 | list($field, $relation) = explode('.', $field); |
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| 350 | |||
| 351 | $result = isset($data[$field][$relation]) ? $data[$field][$relation] : null; |
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| 352 | } else { |
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| 353 | $result = isset($data[$field]) ? $data[$field] : null; |
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| 354 | } |
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| 355 | |||
| 356 | switch ($operator) { |
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| 357 | case '===': |
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| 358 | return $result === $value; |
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| 359 | case '!==': |
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| 360 | return $result !== $value; |
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| 361 | case '!=': |
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| 362 | case '<>': |
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| 363 | return $result != $value; |
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| 364 | case '>': |
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| 365 | return $result > $value; |
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| 366 | case '>=': |
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| 367 | return $result >= $value; |
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| 368 | case '<': |
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| 369 | return $result < $value; |
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| 370 | case '<=': |
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| 371 | return $result <= $value; |
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| 372 | case 'like': |
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| 373 | return is_string($result) && false !== strpos($result, $value); |
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| 374 | case 'not like': |
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| 375 | return is_string($result) && false === strpos($result, $value); |
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| 376 | case 'in': |
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| 377 | return is_scalar($result) && in_array($result, $value, true); |
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| 378 | case 'not in': |
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| 379 | return is_scalar($result) && !in_array($result, $value, true); |
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| 380 | case 'between': |
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| 381 | list($min, $max) = is_string($value) ? explode(',', $value) : $value; |
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| 382 | return is_scalar($result) && $result >= $min && $result <= $max; |
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| 383 | case 'not between': |
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| 384 | list($min, $max) = is_string($value) ? explode(',', $value) : $value; |
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| 385 | return is_scalar($result) && $result > $max || $result < $min; |
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| 386 | case '==': |
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| 387 | case '=': |
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| 388 | default: |
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| 389 | return $result == $value; |
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| 390 | } |
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| 391 | }); |
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| 392 | } |
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| 393 | |||
| 394 | /** |
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| 395 | * 返回数据中指定的一列 |
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| 396 | * @access public |
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| 397 | * @param mixed $columnKey 键名 |
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| 398 | * @param mixed $indexKey 作为索引值的列 |
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| 399 | * @return array |
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| 400 | */ |
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| 401 | public function column($columnKey, $indexKey = null) |
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| 402 | { |
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| 403 | return array_column($this->items, $columnKey, $indexKey); |
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| 404 | } |
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| 405 | |||
| 406 | /** |
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| 407 | * 对数组排序 |
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| 408 | * |
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| 409 | * @access public |
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| 410 | * @param callable|null $callback |
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| 411 | * @return static |
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| 412 | */ |
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| 413 | public function sort(callable $callback = null) |
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| 414 | { |
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| 415 | $items = $this->items; |
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| 416 | |||
| 417 | $callback = $callback ?: function ($a, $b) { |
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| 418 | return $a == $b ? 0 : (($a < $b) ? -1 : 1); |
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| 419 | |||
| 420 | }; |
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| 421 | |||
| 422 | uasort($items, $callback); |
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| 423 | |||
| 424 | return new static($items); |
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| 425 | } |
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| 426 | |||
| 427 | /** |
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| 428 | * 指定字段排序 |
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| 429 | * @access public |
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| 430 | * @param string $field 排序字段 |
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| 431 | * @param string $order 排序 |
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| 432 | * @param bool $intSort 是否为数字排序 |
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| 433 | * @return $this |
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| 434 | */ |
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| 435 | public function order($field, $order = null, $intSort = true) |
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| 436 | { |
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| 437 | return $this->sort(function ($a, $b) use ($field, $order, $intSort) { |
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| 438 | $fieldA = isset($a[$field]) ? $a[$field] : null; |
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| 439 | $fieldB = isset($b[$field]) ? $b[$field] : null; |
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| 440 | |||
| 441 | if ($intSort) { |
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| 442 | return 'desc' == strtolower($order) ? $fieldB >= $fieldA : $fieldA >= $fieldB; |
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| 443 | } else { |
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| 444 | return 'desc' == strtolower($order) ? strcmp($fieldB, $fieldA) : strcmp($fieldA, $fieldB); |
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| 445 | } |
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| 446 | }); |
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| 447 | } |
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| 448 | |||
| 449 | /** |
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| 450 | * 将数组打乱 |
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| 451 | * |
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| 452 | * @access public |
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| 453 | * @return static |
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| 454 | */ |
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| 455 | public function shuffle() |
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| 456 | { |
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| 457 | $items = $this->items; |
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| 458 | |||
| 459 | shuffle($items); |
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| 460 | |||
| 461 | return new static($items); |
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| 462 | } |
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| 463 | |||
| 464 | /** |
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| 465 | * 截取数组 |
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| 466 | * |
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| 467 | * @access public |
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| 468 | * @param int $offset |
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| 469 | * @param int $length |
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| 470 | * @param bool $preserveKeys |
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| 471 | * @return static |
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| 472 | */ |
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| 473 | public function slice($offset, $length = null, $preserveKeys = false) |
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| 474 | { |
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| 475 | return new static(array_slice($this->items, $offset, $length, $preserveKeys)); |
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| 476 | } |
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| 477 | |||
| 478 | // ArrayAccess |
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| 479 | public function offsetExists($offset) |
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| 480 | { |
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| 481 | return array_key_exists($offset, $this->items); |
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| 482 | } |
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| 483 | |||
| 484 | public function offsetGet($offset) |
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| 485 | { |
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| 486 | return $this->items[$offset]; |
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| 487 | } |
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| 488 | |||
| 489 | public function offsetSet($offset, $value) |
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| 495 | } |
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| 496 | } |
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| 497 | |||
| 498 | public function offsetUnset($offset) |
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| 499 | { |
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| 500 | unset($this->items[$offset]); |
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| 501 | } |
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| 502 | |||
| 503 | //Countable |
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| 504 | public function count() |
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| 505 | { |
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| 506 | return count($this->items); |
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| 507 | } |
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| 508 | |||
| 509 | //IteratorAggregate |
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| 510 | public function getIterator() |
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| 511 | { |
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| 512 | return new ArrayIterator($this->items); |
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| 513 | } |
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| 514 | |||
| 515 | //JsonSerializable |
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| 516 | public function jsonSerialize() |
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| 517 | { |
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| 518 | return $this->toArray(); |
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| 519 | } |
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| 520 | |||
| 521 | /** |
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| 522 | * 转换当前数据集为JSON字符串 |
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| 523 | * @access public |
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| 524 | * @param integer $options json参数 |
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| 525 | * @return string |
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| 526 | */ |
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| 527 | public function toJson($options = JSON_UNESCAPED_UNICODE) |
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| 528 | { |
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| 529 | return json_encode($this->toArray(), $options); |
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| 530 | } |
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| 531 | |||
| 532 | public function __toString() |
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| 535 | } |
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| 536 | |||
| 537 | /** |
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| 538 | * 转换成数组 |
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| 539 | * |
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| 540 | * @access public |
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| 541 | * @param mixed $items |
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| 542 | * @return array |
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| 543 | */ |
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| 544 | protected function convertToArray($items) |
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| 551 | } |
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| 552 | } |
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| 553 |
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