| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Firebird.php 2963 2007-10-21 06:23:59Z Jonathan.Wage $ |
| 4 | * |
| 5 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 6 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 7 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 8 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 9 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 10 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 11 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 12 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 13 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 14 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 15 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 16 | * |
| 17 | * This software consists of voluntary contributions made by many individuals |
| 18 | * and is licensed under the LGPL. For more information, see |
| 19 | * <http://www.phpdoctrine.org>. |
| 20 | */ |
| 21 | Doctrine::autoload('Doctrine_Transaction'); |
| 22 | /** |
| 23 | * |
| 24 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 25 | * @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library) |
| 26 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 27 | * @package Doctrine |
| 28 | * @subpackage Transaction |
| 29 | * @link www.phpdoctrine.org |
| 30 | * @since 1.0 |
| 31 | * @version $Revision: 2963 $ |
| 32 | */ |
| 33 | class Doctrine_Transaction_Firebird extends Doctrine_Transaction |
| 34 | { |
| 35 | /** |
| 36 | * createSavepoint |
| 37 | * creates a new savepoint |
| 38 | * |
| 39 | * @param string $savepoint name of a savepoint to set |
| 40 | * @return void |
| 41 | */ |
| 42 | protected function createSavePoint($savepoint) |
| 43 | { |
| 44 | $query = 'SAVEPOINT ' . $savepoint; |
| 45 | |
| 46 | return $this->conn->execute($query); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * releaseSavePoint |
| 51 | * releases given savepoint |
| 52 | * |
| 53 | * @param string $savepoint name of a savepoint to release |
| 54 | * @return void |
| 55 | */ |
| 56 | protected function releaseSavePoint($savepoint) |
| 57 | { |
| 58 | $query = 'RELEASE SAVEPOINT ' . $savepoint; |
| 59 | |
| 60 | return $this->conn->execute($query); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * rollbackSavePoint |
| 65 | * releases given savepoint |
| 66 | * |
| 67 | * @param string $savepoint name of a savepoint to rollback to |
| 68 | * @return void |
| 69 | */ |
| 70 | protected function rollbackSavePoint($savepoint) |
| 71 | { |
| 72 | $query = 'ROLLBACK TO SAVEPOINT '.$savepoint; |
| 73 | |
| 74 | return $this->conn->execute($query); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Set the transacton isolation level. |
| 79 | * |
| 80 | * @param string standard isolation level (SQL-92) |
| 81 | * READ UNCOMMITTED (allows dirty reads) |
| 82 | * READ COMMITTED (prevents dirty reads) |
| 83 | * REPEATABLE READ (prevents nonrepeatable reads) |
| 84 | * SERIALIZABLE (prevents phantom reads) |
| 85 | * |
| 86 | * @param array some transaction options: |
| 87 | * 'wait' => 'WAIT' | 'NO WAIT' |
| 88 | * 'rw' => 'READ WRITE' | 'READ ONLY' |
| 89 | * |
| 90 | * @throws PDOException if something fails at the PDO level |
| 91 | * @throws Doctrine_Transaction_Exception if using unknown isolation level or unknown wait option |
| 92 | * @return void |
| 93 | */ |
| 94 | public function setIsolation($isolation, $options = array()) { |
| 95 | switch ($isolation) { |
| 96 | case 'READ UNCOMMITTED': |
| 97 | $nativeIsolation = 'READ COMMITTED RECORD_VERSION'; |
| 98 | break; |
| 99 | case 'READ COMMITTED': |
| 100 | $nativeIsolation = 'READ COMMITTED NO RECORD_VERSION'; |
| 101 | break; |
| 102 | case 'REPEATABLE READ': |
| 103 | $nativeIsolation = 'SNAPSHOT'; |
| 104 | break; |
| 105 | case 'SERIALIZABLE': |
| 106 | $nativeIsolation = 'SNAPSHOT TABLE STABILITY'; |
| 107 | break; |
| 108 | default: |
| 109 | throw new Doctrine_Transaction_Exception('isolation level is not supported: ' . $isolation); |
| 110 | } |
| 111 | |
| 112 | $rw = $wait = ''; |
| 113 | |
| 114 | if (isset($options['wait'])) { |
| 115 | switch ($options['wait']) { |
| 116 | case 'WAIT': |
| 117 | case 'NO WAIT': |
| 118 | $wait = ' ' . $options['wait']; |
| 119 | break; |
| 120 | default: |
| 121 | throw new Doctrine_Transaction_Exception('wait option is not supported: ' . $options['wait']); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | if (isset($options['rw'])) { |
| 126 | switch ($options['rw']) { |
| 127 | case 'READ ONLY': |
| 128 | case 'READ WRITE': |
| 129 | $rw = ' ' . $options['rw']; |
| 130 | break; |
| 131 | default: |
| 132 | throw new Doctrine_Transaction_Exception('wait option is not supported: ' . $options['rw']); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | $query = 'SET TRANSACTION' . $rw . $wait .' ISOLATION LEVEL ' . $nativeIsolation; |
| 137 | |
| 138 | $this->conn->execute($query); |
| 139 | } |
| 140 | } |