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<?php |
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namespace SilverStripe\ORM\Connect; |
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use SilverStripe\Dev\Deprecation; |
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/** |
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* TransactionManager that executes MySQL-compatible transaction control queries |
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*/ |
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class MySQLTransactionManager implements TransactionManager |
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{ |
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protected $dbConn; |
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protected $inTransaction = false; |
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public function __construct(Database $dbConn) |
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{ |
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$this->dbConn = $dbConn; |
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} |
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/** |
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* @inherit |
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*/ |
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public function transactionStart($transactionMode = false, $sessionCharacteristics = false) |
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{ |
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if ($transactionMode || $sessionCharacteristics) { |
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Deprecation::notice( |
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'4.3', |
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'$transactionMode and $sessionCharacteristics are deprecated and will be removed in SS5' |
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); |
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} |
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if ($this->inTransaction) { |
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throw new DatabaseException( |
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"Already in transaction, can't start another. Consider decorating with NestedTransactionManager." |
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); |
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} |
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// This sets the isolation level for the NEXT transaction, not the current one. |
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if ($transactionMode) { |
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$this->dbConn->query('SET TRANSACTION ' . $transactionMode); |
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} |
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$this->dbConn->query('START TRANSACTION'); |
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if ($sessionCharacteristics) { |
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$this->dbConn->query('SET SESSION TRANSACTION ' . $sessionCharacteristics); |
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} |
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$this->inTransaction = true; |
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return true; |
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} |
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/** |
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* @inherit |
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*/ |
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public function transactionEnd($chain = false) |
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{ |
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if (!$this->inTransaction) { |
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throw new DatabaseException("Not in transaction, can't end."); |
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} |
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if ($chain) { |
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user_error( |
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"transactionEnd() chain argument no longer implemented. Use NestedTransactionManager", |
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E_USER_WARNING |
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); |
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} |
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$this->dbConn->query('COMMIT'); |
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$this->inTransaction = false; |
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return true; |
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} |
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/** |
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* @inherit |
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*/ |
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public function transactionRollback($savepoint = null) |
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{ |
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if (!$this->inTransaction) { |
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throw new DatabaseException("Not in transaction, can't roll back."); |
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} |
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if ($savepoint) { |
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$this->dbConn->query("ROLLBACK TO SAVEPOINT $savepoint"); |
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} else { |
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$this->dbConn->query('ROLLBACK'); |
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$this->inTransaction = false; |
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} |
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return true; |
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} |
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/** |
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* @inherit |
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*/ |
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public function transactionSavepoint($savepoint) |
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{ |
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$this->dbConn->query("SAVEPOINT $savepoint"); |
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} |
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/** |
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* @inherit |
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*/ |
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public function transactionDepth() |
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{ |
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return (int)$this->inTransaction; |
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} |
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public function supportsSavepoints() |
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{ |
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return true; |
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} |
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} |
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sminnee /
silverstripe-framework
