| Total Complexity | 48 |
| Total Lines | 381 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like ResultSet 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 ResultSet, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 8 | class ResultSet implements ResultSetInterface |
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| 9 | { |
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| 10 | /** |
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| 11 | * @var int |
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| 12 | */ |
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| 13 | protected $num_rows = 0; |
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| 14 | |||
| 15 | /** |
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| 16 | * @var int |
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| 17 | */ |
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| 18 | protected $cursor = 0; |
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| 19 | |||
| 20 | /** |
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| 21 | * @var int |
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| 22 | */ |
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| 23 | protected $next_cursor = 0; |
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| 24 | |||
| 25 | /** |
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| 26 | * @var int |
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| 27 | */ |
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| 28 | protected $affected_rows = 0; // leave to 0 so SELECT etc. will be coherent |
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| 29 | |||
| 30 | /** |
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| 31 | * @var array |
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| 32 | */ |
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| 33 | protected $fields; |
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| 34 | |||
| 35 | /** |
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| 36 | * @var null|array |
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| 37 | */ |
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| 38 | protected $stored; |
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| 39 | |||
| 40 | /** |
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| 41 | * @var null|array |
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| 42 | */ |
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| 43 | protected $fetched; |
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| 44 | |||
| 45 | /** |
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| 46 | * @var ResultSetAdapterInterface |
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| 47 | */ |
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| 48 | protected $adapter; |
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| 49 | |||
| 50 | /** |
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| 51 | * @param ResultSetAdapterInterface $adapter |
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| 52 | */ |
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| 53 | public function __construct(ResultSetAdapterInterface $adapter) |
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| 54 | { |
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| 55 | $this->adapter = $adapter; |
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| 56 | $this->init(); |
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| 57 | |||
| 58 | if ($adapter instanceof PdoResultSetAdapter) { //only for pdo for some reason |
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| 59 | $this->store(); |
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| 60 | } |
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| 61 | } |
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| 62 | |||
| 63 | /** |
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| 64 | * @inheritdoc |
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| 65 | */ |
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| 66 | public function hasRow($num) |
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| 67 | { |
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| 68 | return $num >= 0 && $num < $this->num_rows; |
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| 69 | } |
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| 70 | |||
| 71 | /** |
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| 72 | * @inheritdoc |
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| 73 | */ |
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| 74 | public function hasNextRow() |
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| 75 | { |
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| 76 | return $this->cursor + 1 < $this->num_rows; |
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| 77 | } |
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| 78 | |||
| 79 | /** |
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| 80 | * @inheritdoc |
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| 81 | */ |
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| 82 | public function getAffectedRows() |
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| 83 | { |
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| 84 | return $this->affected_rows; |
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| 85 | } |
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| 86 | |||
| 87 | /** |
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| 88 | * @inheritdoc |
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| 89 | */ |
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| 90 | public function offsetExists($offset) |
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| 91 | { |
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| 92 | return $this->hasRow($offset); |
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| 93 | } |
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| 94 | |||
| 95 | /** |
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| 96 | * @inheritdoc |
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| 97 | */ |
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| 98 | public function offsetGet($offset) |
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| 99 | { |
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| 100 | return $this->toRow($offset)->fetchAssoc(); |
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| 101 | } |
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| 102 | |||
| 103 | /** |
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| 104 | * @inheritdoc |
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| 105 | * @codeCoverageIgnore |
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| 106 | */ |
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| 107 | public function offsetSet($offset, $value) |
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| 108 | { |
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| 109 | throw new \BadMethodCallException('Not implemented'); |
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| 110 | } |
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| 111 | |||
| 112 | /** |
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| 113 | * @inheritdoc |
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| 114 | * @codeCoverageIgnore |
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| 115 | */ |
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| 116 | public function offsetUnset($offset) |
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| 117 | { |
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| 118 | throw new \BadMethodCallException('Not implemented'); |
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| 119 | } |
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| 120 | |||
| 121 | /** |
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| 122 | * @inheritdoc |
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| 123 | */ |
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| 124 | public function current() |
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| 125 | { |
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| 126 | $row = $this->fetched; |
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| 127 | unset($this->fetched); |
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| 128 | |||
| 129 | return $row; |
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| 130 | } |
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| 131 | |||
| 132 | /** |
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| 133 | * @inheritdoc |
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| 134 | */ |
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| 135 | public function next() |
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| 136 | { |
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| 137 | $this->fetched = $this->fetch(true); |
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| 138 | } |
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| 139 | |||
| 140 | /** |
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| 141 | * @inheritdoc |
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| 142 | */ |
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| 143 | public function key() |
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| 144 | { |
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| 145 | return (int)$this->cursor; |
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| 146 | } |
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| 147 | |||
| 148 | /** |
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| 149 | * @inheritdoc |
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| 150 | */ |
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| 151 | public function valid() |
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| 152 | { |
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| 153 | if ($this->stored !== null) { |
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| 154 | return $this->hasRow($this->cursor); |
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| 155 | } |
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| 156 | |||
| 157 | return $this->adapter->valid(); |
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| 158 | } |
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| 159 | |||
| 160 | /** |
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| 161 | * @inheritdoc |
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| 162 | */ |
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| 163 | public function rewind() |
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| 164 | { |
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| 165 | if ($this->stored === null) { |
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| 166 | $this->adapter->rewind(); |
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| 167 | } |
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| 168 | |||
| 169 | $this->next_cursor = 0; |
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| 170 | |||
| 171 | $this->fetched = $this->fetch(true); |
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| 172 | } |
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| 173 | |||
| 174 | /** |
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| 175 | * Returns the number of rows in the result set |
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| 176 | * @inheritdoc |
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| 177 | */ |
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| 178 | public function count() |
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| 179 | { |
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| 180 | return $this->num_rows; |
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| 181 | } |
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| 182 | |||
| 183 | protected function init() |
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| 184 | { |
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| 185 | if ($this->adapter->isDml()) { |
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| 186 | $this->affected_rows = $this->adapter->getAffectedRows(); |
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| 187 | } else { |
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| 188 | $this->num_rows = $this->adapter->getNumRows(); |
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| 189 | $this->fields = $this->adapter->getFields(); |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | /** |
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| 194 | * @param array $numeric_array |
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| 195 | * |
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| 196 | * @return array |
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| 197 | */ |
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| 198 | protected function makeAssoc($numeric_array) |
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| 199 | { |
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| 200 | $assoc_array = array(); |
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| 201 | foreach ($numeric_array as $col_key => $col_value) { |
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| 202 | $assoc_array[$this->fields[$col_key]->name] = $col_value; |
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| 203 | } |
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| 204 | |||
| 205 | return $assoc_array; |
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| 206 | } |
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| 207 | |||
| 208 | /** |
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| 209 | * @param bool $assoc |
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| 210 | * |
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| 211 | * @return array|bool|null |
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| 212 | */ |
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| 213 | protected function fetchFromStore($assoc = true) |
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| 214 | { |
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| 215 | if ($this->stored === null) { |
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| 216 | return false; |
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| 217 | } |
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| 218 | |||
| 219 | $row = isset($this->stored[$this->cursor]) ? $this->stored[$this->cursor] : null; |
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| 220 | |||
| 221 | if ($row !== null) { |
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| 222 | $row = $assoc ? $this->makeAssoc($row) : $row; |
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| 223 | } |
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| 224 | |||
| 225 | return $row; |
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| 226 | } |
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| 227 | |||
| 228 | /** |
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| 229 | * @param bool $assoc |
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| 230 | * |
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| 231 | * @return array|bool |
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| 232 | */ |
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| 233 | protected function fetchAllFromStore($assoc) |
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| 234 | { |
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| 235 | if ($this->stored === null) { |
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| 236 | return false; |
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| 237 | } |
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| 238 | |||
| 239 | $result_from_store = array(); |
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| 240 | |||
| 241 | $this->cursor = $this->next_cursor; |
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| 242 | while ($row = $this->fetchFromStore($assoc)) { |
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| 243 | $result_from_store[] = $row; |
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| 244 | $this->cursor = ++$this->next_cursor; |
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| 245 | } |
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| 246 | |||
| 247 | return $result_from_store; |
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| 248 | } |
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| 249 | |||
| 250 | /** |
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| 251 | * @param bool $assoc |
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| 252 | * |
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| 253 | * @return array |
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| 254 | */ |
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| 255 | protected function fetchAll($assoc = true) |
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| 256 | { |
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| 257 | $fetch_all_result = $this->fetchAllFromStore($assoc); |
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| 258 | |||
| 259 | if ($fetch_all_result === false) { |
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| 260 | $fetch_all_result = $this->adapter->fetchAll($assoc); |
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| 261 | } |
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| 262 | |||
| 263 | $this->cursor = $this->num_rows; |
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| 264 | $this->next_cursor = $this->cursor + 1; |
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| 265 | |||
| 266 | return $fetch_all_result; |
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| 267 | } |
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| 268 | |||
| 269 | /** |
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| 270 | * @inheritdoc |
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| 271 | */ |
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| 272 | public function store() |
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| 273 | { |
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| 274 | if ($this->stored !== null) { |
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| 275 | return $this; |
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| 276 | } |
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| 277 | |||
| 278 | if ($this->adapter->isDml()) { |
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| 279 | $this->stored = $this->affected_rows; |
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| 280 | } else { |
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| 281 | $this->stored = $this->adapter->store(); |
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| 282 | } |
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| 283 | |||
| 284 | return $this; |
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| 285 | } |
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| 286 | |||
| 287 | /** |
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| 288 | * @inheritdoc |
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| 289 | */ |
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| 290 | public function getStored() |
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| 291 | { |
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| 292 | $this->store(); |
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| 293 | if ($this->adapter->isDml()) { |
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| 294 | return $this->getAffectedRows(); |
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| 295 | } |
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| 296 | |||
| 297 | return $this->fetchAllAssoc(); |
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| 298 | } |
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| 299 | |||
| 300 | /** |
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| 301 | * @inheritdoc |
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| 302 | */ |
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| 303 | public function toRow($num) |
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| 317 | } |
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| 318 | |||
| 319 | /** |
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| 320 | * @inheritdoc |
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| 321 | */ |
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| 322 | public function toNextRow() |
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| 323 | { |
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| 324 | $this->toRow(++$this->cursor); |
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| 325 | |||
| 326 | return $this; |
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| 327 | } |
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| 328 | |||
| 329 | /** |
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| 330 | * @inheritdoc |
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| 331 | */ |
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| 332 | public function fetchAllAssoc() |
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| 335 | } |
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| 336 | |||
| 337 | /** |
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| 338 | * @inheritdoc |
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| 339 | */ |
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| 340 | public function fetchAllNum() |
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| 343 | } |
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| 344 | |||
| 345 | /** |
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| 346 | * @inheritdoc |
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| 347 | */ |
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| 348 | public function fetchAssoc() |
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| 349 | { |
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| 350 | return $this->fetch(true); |
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| 351 | } |
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| 352 | |||
| 353 | /** |
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| 354 | * @inheritdoc |
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| 355 | */ |
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| 356 | public function fetchNum() |
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| 357 | { |
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| 358 | return $this->fetch(false); |
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| 359 | } |
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| 360 | |||
| 361 | /** |
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| 362 | * @param bool $assoc |
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| 363 | * |
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| 364 | * @return array|null |
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| 365 | */ |
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| 366 | protected function fetch($assoc = true) |
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| 379 | } |
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| 380 | |||
| 381 | /** |
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| 382 | * @inheritdoc |
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| 383 | */ |
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| 384 | public function freeResult() |
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| 389 | } |
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| 390 | } |
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| 391 |