top-think /
framework
| Total Complexity | 57 |
| Total Lines | 470 |
| Duplicated Lines | 0 % |
| Coverage | 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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| 21 | class Fetch |
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| 22 | { |
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| 23 | /** |
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| 24 | * 查询对象 |
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| 25 | * @var Query |
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| 26 | */ |
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| 27 | protected $query; |
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| 28 | |||
| 29 | /** |
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| 30 | * Connection对象 |
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| 31 | * @var Connection |
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| 32 | */ |
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| 33 | protected $connection; |
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| 34 | |||
| 35 | /** |
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| 36 | * Builder对象 |
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| 37 | * @var Builder |
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| 38 | */ |
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| 39 | protected $builder; |
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| 40 | |||
| 41 | /** |
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| 42 | * 创建一个查询SQL获取对象 |
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| 43 | * |
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| 44 | * @param Query $query 查询对象 |
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| 45 | */ |
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| 46 | public function __construct(Query $query) |
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| 47 | { |
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| 48 | $this->query = $query; |
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| 49 | $this->connection = $query->getConnection(); |
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| 50 | $this->builder = $this->connection->getBuilder(); |
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| 51 | } |
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| 52 | |||
| 53 | /** |
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| 54 | * 聚合查询 |
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| 55 | * @access protected |
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| 56 | * @param string $aggregate 聚合方法 |
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| 57 | * @param string $field 字段名 |
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| 58 | * @return string |
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| 59 | */ |
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| 60 | protected function aggregate(string $aggregate, string $field): string |
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| 61 | { |
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| 62 | $this->query->parseOptions(); |
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| 63 | |||
| 64 | $field = $aggregate . '(' . $this->builder->parseKey($this->query, $field) . ') AS tp_' . strtolower($aggregate); |
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| 65 | |||
| 66 | return $this->value($field, 0, false); |
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| 67 | } |
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| 68 | |||
| 69 | /** |
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| 70 | * 得到某个字段的值 |
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| 71 | * @access public |
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| 72 | * @param string $field 字段名 |
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| 73 | * @param mixed $default 默认值 |
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| 74 | * @return string |
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| 75 | */ |
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| 76 | public function value(string $field, $default = null, bool $one = true): string |
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| 77 | { |
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| 78 | $options = $this->query->parseOptions(); |
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| 79 | |||
| 80 | if (isset($options['field'])) { |
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| 81 | $this->query->removeOption('field'); |
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| 82 | } |
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| 83 | |||
| 84 | $this->query->setOption('field', (array) $field); |
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| 85 | |||
| 86 | // 生成查询SQL |
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| 87 | $sql = $this->builder->select($this->query, $one); |
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| 88 | |||
| 89 | if (isset($options['field'])) { |
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| 90 | $this->query->setOption('field', $options['field']); |
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| 91 | } else { |
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| 92 | $this->query->removeOption('field'); |
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| 93 | } |
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| 94 | |||
| 95 | return $this->fetch($sql); |
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| 96 | } |
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| 97 | |||
| 98 | /** |
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| 99 | * 得到某个列的数组 |
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| 100 | * @access public |
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| 101 | * @param string $field 字段名 多个字段用逗号分隔 |
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| 102 | * @param string $key 索引 |
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| 103 | * @return string |
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| 104 | */ |
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| 105 | public function column(string $field, string $key = ''): string |
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| 106 | { |
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| 107 | $options = $this->query->parseOptions(); |
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| 108 | |||
| 109 | if (isset($options['field'])) { |
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| 110 | $this->query->removeOption('field'); |
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| 111 | } |
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| 112 | |||
| 113 | if ($key && '*' != $field) { |
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| 114 | $field = $key . ',' . $field; |
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| 115 | } |
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| 116 | |||
| 117 | $field = array_map('trim', explode(',', $field)); |
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| 118 | |||
| 119 | $this->query->setOption('field', $field); |
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| 120 | |||
| 121 | // 生成查询SQL |
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| 122 | $sql = $this->builder->select($this->query); |
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| 123 | |||
| 124 | if (isset($options['field'])) { |
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| 125 | $this->query->setOption('field', $options['field']); |
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| 126 | } else { |
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| 127 | $this->query->removeOption('field'); |
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| 128 | } |
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| 129 | |||
| 130 | return $this->fetch($sql); |
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| 131 | } |
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| 132 | |||
| 133 | /** |
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| 134 | * 插入记录 |
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| 135 | * @access public |
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| 136 | * @param array $data 数据 |
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| 137 | * @return string |
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| 138 | */ |
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| 139 | public function insert(array $data = []): string |
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| 140 | { |
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| 141 | $options = $this->query->parseOptions(); |
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| 142 | |||
| 143 | if (!empty($data)) { |
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| 144 | $this->query->setOption('data', $data); |
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| 145 | } |
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| 146 | |||
| 147 | $sql = $this->builder->insert($this->query); |
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| 148 | |||
| 149 | return $this->fetch($sql); |
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| 150 | } |
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| 151 | |||
| 152 | /** |
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| 153 | * 插入记录并获取自增ID |
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| 154 | * @access public |
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| 155 | * @param array $data 数据 |
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| 156 | * @return string |
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| 157 | */ |
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| 158 | public function insertGetId(array $data = []): string |
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| 159 | { |
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| 160 | return $this->insert($data); |
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| 161 | } |
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| 162 | |||
| 163 | /** |
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| 164 | * 保存数据 自动判断insert或者update |
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| 165 | * @access public |
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| 166 | * @param array $data 数据 |
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| 167 | * @param bool $forceInsert 是否强制insert |
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| 168 | * @return string |
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| 169 | */ |
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| 170 | public function save(array $data = [], bool $forceInsert = false): string |
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| 171 | { |
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| 172 | if ($forceInsert) { |
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| 173 | return $this->insert($data); |
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| 174 | } |
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| 175 | |||
| 176 | $data = array_merge($this->query->getOptions('data') ?: [], $data); |
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| 177 | |||
| 178 | $this->query->setOption('data', $data); |
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| 179 | |||
| 180 | if ($this->query->getOptions('where')) { |
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| 181 | $isUpdate = true; |
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| 182 | } else { |
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| 183 | $isUpdate = $this->query->parseUpdateData($data); |
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| 184 | } |
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| 185 | |||
| 186 | return $isUpdate ? $this->update() : $this->insert(); |
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| 187 | } |
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| 188 | |||
| 189 | /** |
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| 190 | * 批量插入记录 |
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| 191 | * @access public |
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| 192 | * @param array $dataSet 数据集 |
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| 193 | * @param integer $limit 每次写入数据限制 |
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| 194 | * @return string |
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| 195 | */ |
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| 196 | public function insertAll(array $dataSet = [], int $limit = null): string |
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| 197 | { |
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| 198 | $options = $this->query->parseOptions(); |
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| 199 | |||
| 200 | if (empty($dataSet)) { |
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| 201 | $dataSet = $options['data']; |
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| 202 | } |
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| 203 | |||
| 204 | if (empty($limit) && !empty($options['limit'])) { |
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| 205 | $limit = $options['limit']; |
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| 206 | } |
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| 207 | |||
| 208 | if ($limit) { |
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| 209 | $array = array_chunk($dataSet, $limit, true); |
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| 210 | $fetchSql = []; |
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| 211 | foreach ($array as $item) { |
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| 212 | $sql = $this->builder->insertAll($this->query, $item); |
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| 213 | $bind = $this->query->getBind(); |
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| 214 | |||
| 215 | $fetchSql[] = $this->connection->getRealSql($sql, $bind); |
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| 216 | } |
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| 217 | |||
| 218 | return implode(';', $fetchSql); |
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| 219 | } |
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| 220 | |||
| 221 | $sql = $this->builder->insertAll($this->query, $dataSet); |
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| 222 | |||
| 223 | return $this->fetch($sql); |
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| 224 | } |
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| 225 | |||
| 226 | /** |
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| 227 | * 通过Select方式插入记录 |
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| 228 | * @access public |
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| 229 | * @param array $fields 要插入的数据表字段名 |
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| 230 | * @param string $table 要插入的数据表名 |
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| 231 | * @return string |
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| 232 | */ |
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| 233 | public function selectInsert(array $fields, string $table): string |
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| 234 | { |
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| 235 | $this->query->parseOptions(); |
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| 236 | $sql = $this->builder->selectInsert($this->query, $fields, $table); |
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| 237 | |||
| 238 | return $this->fetch($sql); |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * 更新记录 |
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| 243 | * @access public |
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| 244 | * @param mixed $data 数据 |
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| 245 | * @return string |
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| 246 | */ |
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| 247 | public function update(array $data = []): string |
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| 248 | { |
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| 249 | $options = $this->query->parseOptions(); |
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| 250 | |||
| 251 | $data = !empty($data) ? $data : $options['data']; |
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| 252 | |||
| 253 | $pk = $this->query->getPk(); |
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| 254 | |||
| 255 | if (empty($options['where'])) { |
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| 256 | // 如果存在主键数据 则自动作为更新条件 |
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| 257 | if (is_string($pk) && isset($data[$pk])) { |
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| 258 | $this->query->where($pk, '=', $data[$pk]); |
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| 259 | unset($data[$pk]); |
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| 260 | } elseif (is_array($pk)) { |
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| 261 | // 增加复合主键支持 |
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| 262 | foreach ($pk as $field) { |
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| 263 | if (isset($data[$field])) { |
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| 264 | $this->query->where($field, '=', $data[$field]); |
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| 265 | } else { |
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| 266 | // 如果缺少复合主键数据则不执行 |
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| 267 | throw new Exception('miss complex primary data'); |
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| 268 | } |
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| 269 | unset($data[$field]); |
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| 270 | } |
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| 271 | } |
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| 272 | |||
| 273 | if (empty($this->query->getOptions('where'))) { |
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| 274 | // 如果没有任何更新条件则不执行 |
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| 275 | throw new Exception('miss update condition'); |
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| 276 | } |
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| 277 | } |
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| 278 | |||
| 279 | // 更新数据 |
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| 280 | $this->query->setOption('data', $data); |
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| 281 | |||
| 282 | // 生成UPDATE SQL语句 |
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| 283 | $sql = $this->builder->update($this->query); |
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| 284 | |||
| 285 | return $this->fetch($sql); |
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| 286 | } |
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| 287 | |||
| 288 | /** |
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| 289 | * 删除记录 |
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| 290 | * @access public |
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| 291 | * @param mixed $data 表达式 true 表示强制删除 |
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| 292 | * @return string |
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| 293 | */ |
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| 294 | public function delete($data = null): string |
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| 295 | { |
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| 296 | $options = $this->query->parseOptions(); |
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| 297 | |||
| 298 | if (!is_null($data) && true !== $data) { |
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| 299 | // AR模式分析主键条件 |
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| 300 | $this->query->parsePkWhere($data); |
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| 301 | } |
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| 302 | |||
| 303 | if (!empty($options['soft_delete'])) { |
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| 304 | // 软删除 |
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| 305 | list($field, $condition) = $options['soft_delete']; |
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| 306 | if ($condition) { |
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| 307 | $this->query->setOption('soft_delete', null); |
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| 308 | $this->query->setOption('data', [$field => $condition]); |
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| 309 | // 生成删除SQL语句 |
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| 310 | $sql = $this->builder->delete($this->query); |
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| 311 | return $this->fetch($sql); |
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| 312 | } |
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| 313 | } |
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| 314 | |||
| 315 | // 生成删除SQL语句 |
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| 316 | $sql = $this->builder->delete($this->query); |
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| 317 | |||
| 318 | return $this->fetch($sql); |
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| 319 | } |
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| 320 | |||
| 321 | /** |
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| 322 | * 查找记录 返回SQL |
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| 323 | * @access public |
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| 324 | * @param mixed $data |
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| 325 | * @return string |
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| 326 | */ |
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| 327 | public function select($data = null): string |
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| 328 | { |
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| 329 | $this->query->parseOptions(); |
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| 330 | |||
| 331 | if (!is_null($data)) { |
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| 332 | // 主键条件分析 |
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| 333 | $this->query->parsePkWhere($data); |
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| 334 | } |
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| 335 | |||
| 336 | // 生成查询SQL |
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| 337 | $sql = $this->builder->select($this->query); |
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| 338 | |||
| 339 | return $this->fetch($sql); |
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| 340 | } |
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| 341 | |||
| 342 | /** |
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| 343 | * 查找单条记录 返回SQL语句 |
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| 344 | * @access public |
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| 345 | * @param mixed $data |
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| 346 | * @return string |
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| 347 | */ |
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| 348 | public function find($data = null): string |
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| 349 | { |
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| 350 | $this->query->parseOptions(); |
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| 351 | |||
| 352 | if (!is_null($data)) { |
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| 353 | // AR模式分析主键条件 |
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| 354 | $this->query->parsePkWhere($data); |
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| 355 | } |
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| 356 | |||
| 357 | // 生成查询SQL |
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| 358 | $sql = $this->builder->select($this->query, true); |
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| 359 | |||
| 360 | // 获取实际执行的SQL语句 |
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| 361 | return $this->fetch($sql); |
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| 362 | } |
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| 363 | |||
| 364 | /** |
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| 365 | * 查找多条记录 如果不存在则抛出异常 |
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| 366 | * @access public |
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| 367 | * @param mixed $data |
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| 368 | * @return string |
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| 369 | */ |
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| 370 | public function selectOrFail($data = null): string |
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| 371 | { |
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| 372 | return $this->select($data); |
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| 373 | } |
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| 374 | |||
| 375 | /** |
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| 376 | * 查找单条记录 如果不存在则抛出异常 |
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| 377 | * @access public |
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| 378 | * @param mixed $data |
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| 379 | * @return string |
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| 380 | */ |
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| 381 | public function findOrFail($data = null): string |
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| 384 | } |
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| 385 | |||
| 386 | /** |
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| 387 | * 查找单条记录 不存在返回空数据（或者空模型） |
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| 388 | * @access public |
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| 389 | * @param mixed $data 数据 |
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| 390 | * @return string |
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| 391 | */ |
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| 392 | public function findOrEmpty($data = null) |
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| 393 | { |
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| 394 | return $this->find($data); |
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| 395 | } |
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| 396 | |||
| 397 | /** |
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| 398 | * 获取实际的SQL语句 |
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| 399 | * @access public |
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| 400 | * @param string $sql |
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| 401 | * @return string |
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| 402 | */ |
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| 403 | public function fetch(string $sql): string |
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| 404 | { |
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| 405 | $bind = $this->query->getBind(); |
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| 406 | |||
| 407 | return $this->connection->getRealSql($sql, $bind); |
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| 408 | } |
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| 409 | |||
| 410 | /** |
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| 411 | * COUNT查询 |
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| 412 | * @access public |
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| 413 | * @param string $field 字段名 |
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| 414 | * @return string |
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| 415 | */ |
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| 416 | public function count(string $field = '*'): string |
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| 417 | { |
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| 418 | $options = $this->query->parseOptions(); |
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| 419 | |||
| 420 | if (!empty($options['group'])) { |
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| 421 | // 支持GROUP |
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| 422 | $bind = $this->query->getBind(); |
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| 423 | $subSql = $this->query->options($options)->field('count(' . $field . ') AS think_count')->bind($bind)->buildSql(); |
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| 424 | |||
| 425 | $query = $this->query->newQuery()->table([$subSql => '_group_count_']); |
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| 426 | |||
| 427 | return $query->fetchsql()->aggregate('COUNT', '*'); |
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| 428 | } else { |
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| 429 | return $this->aggregate('COUNT', $field); |
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| 430 | } |
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| 431 | } |
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| 432 | |||
| 433 | /** |
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| 434 | * SUM查询 |
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| 435 | * @access public |
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| 436 | * @param string $field 字段名 |
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| 437 | * @return string |
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| 438 | */ |
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| 439 | public function sum(string $field): string |
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| 440 | { |
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| 441 | return $this->aggregate('SUM', $field); |
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| 442 | } |
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| 443 | |||
| 444 | /** |
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| 445 | * MIN查询 |
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| 446 | * @access public |
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| 447 | * @param string $field 字段名 |
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| 448 | * @return string |
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| 449 | */ |
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| 450 | public function min(string $field): string |
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| 451 | { |
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| 452 | return $this->aggregate('MIN', $field); |
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| 453 | } |
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| 454 | |||
| 455 | /** |
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| 456 | * MAX查询 |
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| 457 | * @access public |
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| 458 | * @param string $field 字段名 |
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| 459 | * @return string |
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| 460 | */ |
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| 461 | public function max(string $field): string |
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| 462 | { |
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| 463 | return $this->aggregate('MAX', $field); |
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| 464 | } |
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| 465 | |||
| 466 | /** |
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| 467 | * AVG查询 |
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| 468 | * @access public |
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| 469 | * @param string $field 字段名 |
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| 470 | * @return string |
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| 471 | */ |
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| 472 | public function avg(string $field): string |
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| 475 | } |
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| 476 | |||
| 477 | public function __call($method, $args) |
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| 478 | { |
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| 479 | if (strtolower(substr($method, 0, 5)) == 'getby') { |
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| 480 | // 根据某个字段获取记录 |
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| 481 | $field = App::parseName(substr($method, 5)); |
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| 482 | return $this->where($field, '=', $args[0])->find(); |
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| 491 | } |
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| 492 | } |
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| 493 |
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