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<?php |
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namespace League\Database\Driver; |
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use PDO; |
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use PDOException; |
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class TransactionPDO extends PDO |
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{ |
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/** |
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* @var array Database drivers that support SAVEPOINT * statements. |
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*/ |
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protected static $supportedDrivers = ['pgsql', 'mysql']; |
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/** |
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* @var int Current transaction depth |
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*/ |
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protected $transactionDepth = 0; |
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/** |
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* Test if database driver support savepoints |
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* |
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* @return bool |
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*/ |
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protected function hasSavepoint() : bool |
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{ |
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return in_array($this->getAttribute(PDO::ATTR_DRIVER_NAME), self::$supportedDrivers, true); |
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} |
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/** |
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* Start transaction |
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* |
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* @return bool|void |
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*/ |
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public function beginTransaction() |
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{ |
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if ($this->transactionDepth == 0 || !$this->hasSavepoint()) { |
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parent::beginTransaction(); |
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} else { |
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$this->exec("SAVEPOINT LEVEL{$this->transactionDepth}"); |
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} |
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$this->transactionDepth++; |
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} |
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/** |
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* Commit current transaction |
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* |
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* @return bool|void |
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*/ |
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public function commit() |
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{ |
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$this->transactionDepth--; |
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if ($this->transactionDepth == 0 || !$this->hasSavepoint()) { |
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parent::commit(); |
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} else { |
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$this->exec("RELEASE SAVEPOINT LEVEL{$this->transactionDepth}"); |
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} |
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} |
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/** |
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* Rollback current transaction |
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* |
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* @throws \PDOException if there is no transaction started |
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* @return bool|void |
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*/ |
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public function rollBack() |
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{ |
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if ($this->transactionDepth == 0) { |
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throw new PDOException('Rollback error : There is no transaction started'); |
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} |
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$this->transactionDepth--; |
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if ($this->transactionDepth == 0 || !$this->hasSavepoint()) { |
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parent::rollBack(); |
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} else { |
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$this->exec("ROLLBACK TO SAVEPOINT LEVEL{$this->transactionDepth}"); |
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} |
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} |
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} |
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larapulse /
database
