top-think /
framework
| Total Complexity | 56 |
| Total Lines | 464 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Fetch 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 Fetch, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 18 | class Fetch |
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| 19 | { |
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| 20 | /** |
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| 21 | * 查询对象 |
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| 22 | * @var Query |
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| 23 | */ |
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| 24 | protected $query; |
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| 25 | |||
| 26 | /** |
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| 27 | * Connection对象 |
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| 28 | * @var Connection |
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| 29 | */ |
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| 30 | protected $connection; |
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| 31 | |||
| 32 | /** |
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| 33 | * Builder对象 |
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| 34 | * @var Builder |
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| 35 | */ |
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| 36 | protected $builder; |
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| 37 | |||
| 38 | /** |
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| 39 | * 创建一个查询SQL获取对象 |
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| 40 | * |
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| 41 | * @param Query $query 查询对象 |
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| 42 | */ |
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| 43 | public function __construct(Query $query) |
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| 48 | } |
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| 49 | |||
| 50 | /** |
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| 51 | * 聚合查询 |
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| 52 | * @access public |
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| 53 | * @param string $aggregate 聚合方法 |
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| 54 | * @param string $field 字段名 |
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| 55 | * @return string |
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| 56 | */ |
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| 57 | public function aggregate(string $aggregate, string $field): string |
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| 64 | } |
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| 65 | |||
| 66 | /** |
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| 67 | * 得到某个字段的值 |
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| 68 | * @access public |
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| 69 | * @param string $field 字段名 |
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| 70 | * @return string |
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| 71 | */ |
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| 72 | public function value(string $field): string |
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| 73 | { |
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| 74 | $options = $this->query->parseOptions(); |
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| 75 | |||
| 76 | if (isset($options['field'])) { |
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| 77 | $this->query->removeOption('field'); |
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| 78 | } |
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| 79 | |||
| 80 | $this->query->setOption('field', (array) $field); |
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| 81 | |||
| 82 | // 生成查询SQL |
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| 83 | $sql = $this->builder->select($this->query, true); |
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| 84 | |||
| 85 | if (isset($options['field'])) { |
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| 86 | $this->query->setOption('field', $options['field']); |
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| 87 | } else { |
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| 88 | $this->query->removeOption('field'); |
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| 89 | } |
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| 90 | |||
| 91 | return $this->fetch($sql); |
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| 92 | } |
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| 93 | |||
| 94 | /** |
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| 95 | * 得到某个列的数组 |
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| 96 | * @access public |
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| 97 | * @param string $field 字段名 多个字段用逗号分隔 |
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| 98 | * @param string $key 索引 |
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| 99 | * @return string |
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| 100 | */ |
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| 101 | public function column(string $field, string $key = ''): string |
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| 127 | } |
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| 128 | |||
| 129 | /** |
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| 130 | * 插入记录 |
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| 131 | * @access public |
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| 132 | * @param array $data 数据 |
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| 133 | * @return string |
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| 134 | */ |
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| 135 | public function insert(array $data = []): string |
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| 136 | { |
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| 137 | $options = $this->query->parseOptions(); |
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| 138 | |||
| 139 | if (!empty($data)) { |
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| 140 | $this->query->setOption('data', array_merge($options['data'], $data)); |
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| 141 | } |
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| 142 | |||
| 143 | $replace = $options['replace'] ?? false; |
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| 144 | $sql = $this->builder->insert($this->query, $replace); |
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| 145 | |||
| 146 | return $this->fetch($sql); |
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| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * 插入记录并获取自增ID |
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| 151 | * @access public |
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| 152 | * @param array $data 数据 |
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| 153 | * @return string |
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| 154 | */ |
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| 155 | public function insertGetId(array $data = []): string |
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| 156 | { |
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| 157 | return $this->insert($data); |
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| 158 | } |
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| 159 | |||
| 160 | /** |
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| 161 | * 保存数据 自动判断insert或者update |
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| 162 | * @access public |
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| 163 | * @param array $data 数据 |
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| 164 | * @param bool $forceInsert 是否强制insert |
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| 165 | * @return string |
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| 166 | */ |
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| 167 | public function save(array $data = [], bool $forceInsert = false): string |
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| 168 | { |
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| 169 | if (!empty($data)) { |
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| 170 | $data = array_merge($this->query->getOptions('data') ?: [], $data); |
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| 171 | } else { |
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| 172 | $data = $this->query->getOptions('data'); |
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| 173 | } |
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| 174 | |||
| 175 | if (empty($data)) { |
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| 176 | return ''; |
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| 177 | } |
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| 178 | |||
| 179 | if ($forceInsert) { |
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| 180 | return $this->insert($data); |
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| 181 | } |
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| 182 | |||
| 183 | $isUpdate = $this->query->parseUpdateData($data); |
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| 184 | |||
| 185 | $this->query->setOption('data', $data); |
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| 186 | |||
| 187 | return $isUpdate ? $this->update() : $this->insert(); |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * 批量插入记录 |
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| 192 | * @access public |
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| 193 | * @param array $dataSet 数据集 |
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| 194 | * @param boolean $replace 是否replace |
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| 195 | * @param integer $limit 每次写入数据限制 |
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| 196 | * @return string |
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| 197 | */ |
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| 198 | public function insertAll(array $dataSet = [], bool $replace = false, int $limit = null): string |
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| 199 | { |
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| 200 | $options = $this->query->parseOptions(); |
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| 201 | |||
| 202 | if (empty($dataSet)) { |
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| 203 | $dataSet = $options['data']; |
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| 204 | } |
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| 205 | |||
| 206 | if (empty($limit) && !empty($options['limit'])) { |
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| 207 | $limit = $options['limit']; |
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| 208 | } |
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| 209 | |||
| 210 | if ($limit) { |
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| 211 | $array = array_chunk($dataSet, $limit, true); |
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| 212 | $fetchSql = []; |
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| 213 | foreach ($array as $item) { |
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| 214 | $sql = $this->builder->insertAll($this->query, $item, $replace); |
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| 215 | $bind = $this->query->getBind(); |
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| 216 | |||
| 217 | $fetchSql[] = $this->connection->getRealSql($sql, $bind); |
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| 218 | } |
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| 219 | |||
| 220 | return implode(';', $fetchSql); |
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| 221 | } |
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| 222 | |||
| 223 | $sql = $this->builder->insertAll($this->query, $dataSet, $replace); |
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| 224 | |||
| 225 | return $this->fetch($sql); |
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| 226 | } |
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| 227 | |||
| 228 | /** |
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| 229 | * 通过Select方式插入记录 |
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| 230 | * @access public |
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| 231 | * @param array $fields 要插入的数据表字段名 |
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| 232 | * @param string $table 要插入的数据表名 |
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| 233 | * @return string |
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| 234 | */ |
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| 235 | public function selectInsert(array $fields, string $table): string |
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| 236 | { |
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| 237 | $this->query->parseOptions(); |
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| 238 | $sql = $this->builder->selectInsert($this->query, $fields, $table); |
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| 239 | |||
| 240 | return $this->fetch($sql); |
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| 241 | } |
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| 242 | |||
| 243 | /** |
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| 244 | * 更新记录 |
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| 245 | * @access public |
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| 246 | * @param mixed $data 数据 |
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| 247 | * @return string |
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| 248 | */ |
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| 249 | public function update(array $data = []): string |
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| 250 | { |
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| 251 | $options = $this->query->parseOptions(); |
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| 252 | |||
| 253 | $data = array_merge($options['data'], $data); |
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| 254 | |||
| 255 | $pk = $this->query->getPk(); |
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| 256 | |||
| 257 | if (empty($options['where'])) { |
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| 258 | // 如果存在主键数据 则自动作为更新条件 |
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| 259 | if (is_string($pk) && isset($data[$pk])) { |
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| 260 | $this->query->where($pk, '=', $data[$pk]); |
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| 261 | unset($data[$pk]); |
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| 262 | } elseif (is_array($pk)) { |
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| 263 | // 增加复合主键支持 |
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| 264 | foreach ($pk as $field) { |
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| 265 | if (isset($data[$field])) { |
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| 266 | $this->query->where($field, '=', $data[$field]); |
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| 267 | } else { |
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| 268 | // 如果缺少复合主键数据则不执行 |
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| 269 | throw new Exception('miss complex primary data'); |
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| 270 | } |
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| 271 | unset($data[$field]); |
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| 272 | } |
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| 273 | } |
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| 274 | |||
| 275 | if (empty($this->query->getOptions('where'))) { |
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| 276 | // 如果没有任何更新条件则不执行 |
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| 277 | throw new Exception('miss update condition'); |
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| 278 | } |
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| 279 | } |
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| 280 | |||
| 281 | // 更新数据 |
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| 282 | $this->query->setOption('data', $data); |
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| 283 | |||
| 284 | // 生成UPDATE SQL语句 |
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| 285 | $sql = $this->builder->update($this->query); |
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| 286 | |||
| 287 | return $this->fetch($sql); |
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| 288 | } |
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| 289 | |||
| 290 | /** |
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| 291 | * 删除记录 |
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| 292 | * @access public |
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| 293 | * @param mixed $data 表达式 true 表示强制删除 |
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| 294 | * @return string |
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| 295 | */ |
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| 296 | public function delete($data = null): string |
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| 297 | { |
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| 298 | $options = $this->query->parseOptions(); |
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| 299 | |||
| 300 | if (!is_null($data) && true !== $data) { |
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| 301 | // AR模式分析主键条件 |
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| 302 | $this->query->parsePkWhere($data); |
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| 303 | } |
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| 304 | |||
| 305 | if (!empty($options['soft_delete'])) { |
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| 306 | // 软删除 |
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| 307 | list($field, $condition) = $options['soft_delete']; |
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| 308 | if ($condition) { |
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| 309 | $this->query->setOption('soft_delete', null); |
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| 310 | $this->query->setOption('data', [$field => $condition]); |
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| 311 | // 生成删除SQL语句 |
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| 312 | $sql = $this->builder->delete($this->query); |
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| 313 | return $this->fetch($sql); |
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| 314 | } |
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| 315 | } |
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| 316 | |||
| 317 | // 生成删除SQL语句 |
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| 318 | $sql = $this->builder->delete($this->query); |
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| 319 | |||
| 320 | return $this->fetch($sql); |
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| 321 | } |
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| 322 | |||
| 323 | /** |
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| 324 | * 查找记录 返回SQL |
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| 325 | * @access public |
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| 326 | * @param mixed $data |
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| 327 | * @return string |
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| 328 | */ |
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| 329 | public function select($data = null): string |
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| 330 | { |
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| 331 | $this->query->parseOptions(); |
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| 332 | |||
| 333 | if (!is_null($data)) { |
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| 334 | // 主键条件分析 |
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| 335 | $this->query->parsePkWhere($data); |
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| 336 | } |
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| 337 | |||
| 338 | // 生成查询SQL |
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| 339 | $sql = $this->builder->select($this->query); |
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| 340 | |||
| 341 | return $this->fetch($sql); |
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| 342 | } |
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| 343 | |||
| 344 | /** |
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| 345 | * 查找单条记录 返回SQL语句 |
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| 346 | * @access public |
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| 347 | * @param mixed $data |
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| 348 | * @return string |
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| 349 | */ |
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| 350 | public function find($data = null): string |
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| 351 | { |
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| 352 | $this->query->parseOptions(); |
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| 353 | |||
| 354 | if (!is_null($data)) { |
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| 355 | // AR模式分析主键条件 |
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| 356 | $this->query->parsePkWhere($data); |
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| 357 | } |
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| 358 | |||
| 359 | // 生成查询SQL |
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| 360 | $sql = $this->builder->select($this->query, true); |
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| 361 | |||
| 362 | // 获取实际执行的SQL语句 |
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| 363 | return $this->fetch($sql); |
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| 364 | } |
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| 365 | |||
| 366 | /** |
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| 367 | * 查找多条记录 如果不存在则抛出异常 |
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| 368 | * @access public |
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| 369 | * @param mixed $data |
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| 370 | * @return string |
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| 371 | */ |
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| 372 | public function selectOrFail($data = null): string |
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| 373 | { |
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| 374 | return $this->failException(true)->select($data); |
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| 375 | } |
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| 376 | |||
| 377 | /** |
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| 378 | * 查找单条记录 如果不存在则抛出异常 |
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| 379 | * @access public |
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| 380 | * @param mixed $data |
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| 381 | * @return string |
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| 382 | */ |
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| 383 | public function findOrFail($data = null): string |
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| 384 | { |
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| 385 | return $this->failException(true)->find($data); |
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| 386 | } |
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| 387 | |||
| 388 | /** |
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| 389 | * 获取实际的SQL语句 |
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| 390 | * @access public |
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| 391 | * @param string $sql |
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| 392 | * @return string |
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| 393 | */ |
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| 394 | public function fetch(string $sql): string |
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| 395 | { |
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| 396 | $bind = $this->query->getBind(); |
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| 397 | |||
| 398 | return $this->connection->getRealSql($sql, $bind); |
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| 399 | } |
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| 400 | |||
| 401 | /** |
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| 402 | * COUNT查询 |
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| 403 | * @access public |
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| 404 | * @param string $field 字段名 |
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| 405 | * @return string |
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| 406 | */ |
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| 407 | public function count(string $field = '*'): string |
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| 408 | { |
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| 409 | $options = $this->query->parseOptions(); |
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| 410 | |||
| 411 | if (!empty($options['group'])) { |
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| 412 | // 支持GROUP |
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| 413 | $bind = $this->query->getBind(); |
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| 414 | $subSql = $this->query->options($options)->field('count(' . $field . ') AS think_count')->bind($bind)->buildSql(); |
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| 415 | |||
| 416 | $query = $this->query->newQuery()->table([$subSql => '_group_count_']); |
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| 417 | |||
| 418 | return $query->fetchsql()->aggregate('COUNT', '*'); |
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| 419 | } else { |
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| 420 | return $this->aggregate('COUNT', $field); |
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| 421 | } |
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| 422 | } |
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| 423 | |||
| 424 | /** |
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| 425 | * SUM查询 |
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| 426 | * @access public |
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| 427 | * @param string $field 字段名 |
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| 428 | * @return string |
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| 429 | */ |
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| 430 | public function sum(string $field): string |
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| 431 | { |
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| 432 | return $this->aggregate('SUM', $field); |
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| 433 | } |
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| 434 | |||
| 435 | /** |
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| 436 | * MIN查询 |
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| 437 | * @access public |
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| 438 | * @param string $field 字段名 |
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| 439 | * @return string |
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| 440 | */ |
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| 441 | public function min(string $field): string |
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| 442 | { |
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| 443 | return $this->aggregate('MIN', $field); |
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| 444 | } |
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| 445 | |||
| 446 | /** |
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| 447 | * MAX查询 |
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| 448 | * @access public |
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| 449 | * @param string $field 字段名 |
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| 450 | * @return string |
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| 451 | */ |
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| 452 | public function max(string $field): string |
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| 453 | { |
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| 454 | return $this->aggregate('MAX', $field); |
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| 455 | } |
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| 456 | |||
| 457 | /** |
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| 458 | * AVG查询 |
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| 459 | * @access public |
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| 460 | * @param string $field 字段名 |
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| 461 | * @return string |
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| 462 | */ |
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| 463 | public function avg(string $field): string |
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| 466 | } |
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| 467 | |||
| 468 | public function __call($method, $args) |
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| 469 | { |
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| 470 | if (strtolower(substr($method, 0, 5)) == 'getby') { |
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| 471 | // 根据某个字段获取记录 |
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| 472 | $field = App::parseName(substr($method, 5)); |
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| 473 | return $this->where($field, '=', $args[0])->find(); |
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| 474 | } elseif (strtolower(substr($method, 0, 10)) == 'getfieldby') { |
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| 482 | } |
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| 483 | } |
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| 484 |
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