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62 lines
1.6 KiB
62 lines
1.6 KiB
12 years ago
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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 yii\db\mssql;
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/**
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* This is an extension of the default PDO class of MSSQL and DBLIB drivers.
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* It provides workarounds for improperly implemented functionalities of the MSSQL and DBLIB drivers.
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*
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* @author Timur Ruziev <resurtm@gmail.com>
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* @since 2.0
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*/
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class PDO extends \PDO
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{
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/**
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* Returns value of the last inserted ID.
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* @param string|null $sequence the sequence name. Defaults to null.
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* @return integer last inserted ID value.
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*/
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public function lastInsertId($sequence = null)
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{
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return $this->query('SELECT CAST(COALESCE(SCOPE_IDENTITY(), @@IDENTITY) AS bigint)')->fetchColumn();
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}
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/**
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* Starts a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not
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* natively support transactions.
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* @return boolean the result of a transaction start.
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*/
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public function beginTransaction()
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{
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$this->exec('BEGIN TRANSACTION');
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return true;
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}
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/**
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* Commits a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not
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* natively support transactions.
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* @return boolean the result of a transaction commit.
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*/
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public function commit()
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{
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$this->exec('COMMIT TRANSACTION');
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return true;
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}
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/**
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* Rollbacks a transaction. It is necessary to override PDO's method as MSSQL PDO driver does not
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* natively support transactions.
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* @return boolean the result of a transaction rollback.
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*/
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public function rollBack()
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{
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$this->exec('ROLLBACK TRANSACTION');
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return true;
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}
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}
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