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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace edgardmessias\db\firebird; |
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use PDO; |
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/** |
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* Description of PdoAdapter |
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* |
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* @author Edgard Lorraine Messias <[email protected]> |
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*/ |
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class PdoAdapter extends PDO |
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{ |
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private $_inTransaction = false; |
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/** |
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* Do some basic setup for Firebird. |
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* o Force use of exceptions on error. |
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* o Force all metadata to lower case. |
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* Yii will behave in unpredicatable ways if |
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* metadata is not lowercase. |
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* o Ensure that table names are not prefixed to |
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* fieldnames when returning metadata. |
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* Finally call parent constructor. |
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* |
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*/ |
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public function __construct($dsn, $username, $password, $driver_options = []) |
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{ |
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// Windows OS paths with backslashes should be changed |
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$dsn = str_replace("\\", "/", $dsn); |
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// apply error mode |
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$driver_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION; |
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// lower case column names in results are necessary for Yii ActiveRecord proper functioning |
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$driver_options[PDO::ATTR_CASE] = PDO::CASE_LOWER; |
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// ensure we only receive fieldname not tablename.fieldname. |
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$driver_options[PDO::ATTR_FETCH_TABLE_NAMES] = false; |
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parent::__construct($dsn, $username, $password, $driver_options); |
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} |
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/** |
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* Initiates a transaction |
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* @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
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*/ |
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public function beginTransaction($isolationLevel = null) |
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{ |
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$this->setAttribute(PDO::ATTR_AUTOCOMMIT, false); |
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if ($isolationLevel === false) { |
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$this->_inTransaction = true; |
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return true; |
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} |
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if ($isolationLevel === null) { |
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$r = $this->exec("SET TRANSACTION"); |
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$success = ($r !== false); |
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if ($success) { |
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$this->_inTransaction = true; |
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} |
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return ($success); |
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} |
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$r = $this->exec("SET TRANSACTION ISOLATION LEVEL $isolationLevel"); |
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$success = ($r !== false); |
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if ($success) { |
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$this->_inTransaction = true; |
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} |
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return ($success); |
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} |
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/** |
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* Commits a transaction |
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* @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
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*/ |
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public function commit() |
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{ |
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$r = $this->exec("COMMIT"); |
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$this->setAttribute(PDO::ATTR_AUTOCOMMIT, true); |
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$success = ($r !== false); |
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if ($success) { |
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$this->_inTransaction = false; |
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} |
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return ($success); |
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} |
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/** |
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* Rolls back a transaction |
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* @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
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*/ |
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public function rollBack() |
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{ |
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$r = $this->exec("ROLLBACK"); |
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$this->setAttribute(PDO::ATTR_AUTOCOMMIT, true); |
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$success = ($r !== false); |
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if ($success) { |
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$this->_inTransaction = false; |
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} |
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return ($success); |
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} |
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/** |
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* Checks if inside a transaction |
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* @return bool <b>TRUE</b> if a transaction is currently active, and <b>FALSE</b> if not. |
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*/ |
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public function inTransaction() |
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{ |
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return $this->_inTransaction; |
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} |
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} |
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edgardmessias /
yii2-firebird
