Complex classes like Zend2DbAdapter often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Zend2DbAdapter, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 11 | class Zend2DbAdapter |
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| 12 | implements AdapterInterface |
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| 13 | { |
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| 14 | private $options; |
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| 15 | |||
| 16 | private $dbAdapter; |
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| 17 | |||
| 18 | private $defaultDbSelect = null; |
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| 19 | |||
| 20 | private $lockSqlBuilder; |
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| 21 | |||
| 22 | 21 | public function __construct(Options $options, DbAdapter $dbAdapter) |
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| 27 | |||
| 28 | /** |
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| 29 | * @return Options |
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| 30 | */ |
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| 31 | 20 | private function getOptions() |
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| 35 | |||
| 36 | /** |
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| 37 | * @return DbAdapter |
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| 38 | */ |
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| 39 | 17 | private function getDbAdapter() |
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| 43 | |||
| 44 | /** |
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| 45 | * Data cannot contain keys like idColumnName, levelColumnName, ... |
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| 46 | * |
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| 47 | * @param array $data |
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| 48 | * @return array |
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| 49 | */ |
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| 50 | 1 | private function cleanData(array $data) |
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| 51 | { |
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| 52 | 1 | $options = $this->getOptions(); |
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| 53 | |||
| 54 | $disallowedDataKeys = array( |
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| 55 | 1 | $options->getIdColumnName(), |
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| 56 | 1 | $options->getLeftColumnName(), |
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| 57 | 1 | $options->getRightColumnName(), |
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| 58 | 1 | $options->getLevelColumnName(), |
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| 59 | 1 | $options->getParentIdColumnName(), |
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| 60 | ); |
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| 61 | |||
| 62 | 1 | return array_diff_key($data, array_flip($disallowedDataKeys)); |
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| 63 | } |
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| 64 | |||
| 65 | /** |
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| 66 | * @param Db\Sql\Select $dbSelect |
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| 67 | * @return void |
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| 68 | */ |
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| 69 | 1 | public function setDefaultDbSelect(Db\Sql\Select $dbSelect) |
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| 73 | |||
| 74 | /** |
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| 75 | * Return clone of default db select |
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| 76 | * @return Db\Sql\Select |
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| 77 | */ |
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| 78 | 18 | public function getDefaultDbSelect() |
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| 79 | { |
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| 80 | 18 | $options = $this->getOptions(); |
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| 81 | |||
| 82 | 18 | if (null == $this->defaultDbSelect) { |
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| 83 | 17 | $this->defaultDbSelect = new Db\Sql\Select($options->getTableName()); |
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| 84 | } |
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| 85 | |||
| 86 | 18 | $dbSelect = clone $this->defaultDbSelect; |
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| 87 | |||
| 88 | 18 | return $dbSelect; |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * @return LockSqlBuilderInterface |
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| 93 | */ |
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| 94 | 12 | private function getLockSqlBuilder() |
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| 95 | { |
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| 96 | 12 | if (null == $this->lockSqlBuilder) { |
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| 97 | 12 | $vendorName = $this->getDbAdapter() |
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| 98 | 12 | ->getDriver() |
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| 99 | 12 | ->getDatabasePlatformName(); |
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| 100 | |||
| 101 | 12 | $factory = new LockSqlBuilderFactory(); |
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| 102 | 12 | $this->lockSqlBuilder = $factory->createAdapter($vendorName); |
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| 103 | } |
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| 104 | |||
| 105 | 12 | return $this->lockSqlBuilder; |
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| 106 | } |
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| 107 | |||
| 108 | 12 | public function lockTable() |
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| 109 | { |
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| 110 | 12 | $tableName = $this->getOptions() |
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| 111 | 12 | ->getTableName(); |
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| 112 | |||
| 113 | 12 | $sql = $this->getLockSqlBuilder() |
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| 114 | 12 | ->getLockSqlString($tableName); |
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| 115 | |||
| 116 | 12 | if (null != $sql) { |
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| 117 | 12 | $this->getDbAdapter() |
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| 118 | 12 | ->query($sql, DbAdapter::QUERY_MODE_EXECUTE); |
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| 119 | } |
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| 120 | 12 | } |
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| 121 | |||
| 122 | 12 | public function unlockTable() |
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| 123 | { |
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| 124 | 12 | $sql = $this->getLockSqlBuilder() |
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| 125 | 12 | ->getUnlockSqlString(); |
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| 126 | |||
| 127 | 12 | if (null != $sql) { |
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| 128 | $this->getDbAdapter() |
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| 129 | ->query($sql, DbAdapter::QUERY_MODE_EXECUTE); |
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| 130 | } |
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| 131 | 12 | } |
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| 132 | |||
| 133 | 12 | public function beginTransaction() |
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| 138 | |||
| 139 | 12 | public function commitTransaction() |
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| 144 | |||
| 145 | public function rollbackTransaction() |
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| 150 | |||
| 151 | 2 | public function update($nodeId, array $data, NodeInfo $nodeInfo = null) |
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| 152 | { |
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| 153 | 2 | $options = $this->getOptions(); |
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| 154 | |||
| 155 | 2 | $dbAdapter = $this->getDbAdapter(); |
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| 156 | |||
| 157 | 2 | if (null == $nodeInfo) { |
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| 158 | 1 | $data = $this->cleanData($data); |
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| 159 | } else { |
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| 160 | 1 | $data[$options->getParentIdColumnName()] = $nodeInfo->getParentId(); |
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| 161 | 1 | $data[$options->getLevelColumnName()] = $nodeInfo->getLevel(); |
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| 162 | 1 | $data[$options->getLeftColumnName()] = $nodeInfo->getLeft(); |
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| 163 | 1 | $data[$options->getRightColumnName()] = $nodeInfo->getRight(); |
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| 164 | } |
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| 165 | |||
| 166 | 2 | $update = new Db\Sql\Update($options->getTableName()); |
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| 167 | 2 | $update->set($data) |
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| 168 | 2 | ->where(array( |
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| 169 | 2 | $options->getIdColumnName() => $nodeId, |
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| 170 | )); |
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| 171 | |||
| 172 | 2 | $dbAdapter->query($update->getSqlString($dbAdapter->getPlatform()), |
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| 173 | 2 | DbAdapter::QUERY_MODE_EXECUTE); |
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| 174 | 2 | } |
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| 175 | |||
| 176 | 4 | public function insert(NodeInfo $nodeInfo, array $data) |
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| 197 | |||
| 198 | 1 | public function delete($leftIndex, $rightIndex) |
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| 213 | |||
| 214 | 1 | public function deleteAll($expectNodeId) |
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| 226 | |||
| 227 | 9 | public function moveLeftIndexes($fromIndex, $shift) |
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| 228 | { |
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| 229 | 9 | $options = $this->getOptions(); |
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| 230 | |||
| 231 | 9 | if (0 == $shift) { |
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| 253 | |||
| 254 | 9 | public function moveRightIndexes($fromIndex, $shift) |
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| 280 | |||
| 281 | 4 | public function updateParentId($nodeId, $newParentId) |
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| 298 | |||
| 299 | 4 | public function updateLevels($leftIndexFrom, $rightIndexTo, $shift) |
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| 327 | |||
| 328 | 4 | public function moveBranch($leftIndexFrom, $rightIndexTo, $shift) |
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| 358 | |||
| 359 | 15 | public function getNode($nodeId) |
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| 379 | |||
| 380 | 14 | public function getNodeInfo($nodeId) |
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| 399 | |||
| 400 | 1 | public function getPath($nodeId, $startLevel = 0, $excludeLastNode = false) |
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| 436 | |||
| 437 | 2 | public function getDescendants($nodeId = 1, $startLevel = 0, $levels = null, $excludeBranch = null) |
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| 495 | } |
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| 496 |