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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004, 2011 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  * @package Nette\Database\Drivers
 11:  */
 12: 
 13: 
 14: 
 15: /**
 16:  * Supplemental Oracle database driver.
 17:  *
 18:  * @author     David Grudl
 19:  * @package Nette\Database\Drivers
 20:  */
 21: class OciDriver extends Object implements ISupplementalDriver
 22: {
 23:     /** @var array */
 24:     public $supports = array('meta' => TRUE);
 25: 
 26:     /** @var Connection */
 27:     private $connection;
 28: 
 29:     /** @var string  Datetime format */
 30:     private $fmtDateTime;
 31: 
 32: 
 33: 
 34:     public function __construct(Connection $connection, array $options)
 35:     {
 36:         $this->connection = $connection;
 37:         $this->fmtDateTime = isset($options['formatDateTime']) ? $options['formatDateTime'] : 'U';
 38:     }
 39: 
 40: 
 41: 
 42:     /********************* SQL ****************d*g**/
 43: 
 44: 
 45: 
 46:     /**
 47:      * Delimites identifier for use in a SQL statement.
 48:      */
 49:     public function delimite($name)
 50:     {
 51:         // @see http://download.oracle.com/docs/cd/B10500_01/server.920/a96540/sql_elements9a.htm
 52:         return '"' . str_replace('"', '""', $name) . '"';
 53:     }
 54: 
 55: 
 56: 
 57:     /**
 58:      * Formats date-time for use in a SQL statement.
 59:      */
 60:     public function formatDateTime(DateTime $value)
 61:     {
 62:         return $value->format($this->fmtDateTime);
 63:     }
 64: 
 65: 
 66: 
 67:     /**
 68:      * Encodes string for use in a LIKE statement.
 69:      */
 70:     public function formatLike($value, $pos)
 71:     {
 72:         throw new NotImplementedException;
 73:     }
 74: 
 75: 
 76: 
 77:     /**
 78:      * Injects LIMIT/OFFSET to the SQL query.
 79:      */
 80:     public function applyLimit(&$sql, $limit, $offset)
 81:     {
 82:         if ($offset > 0) {
 83:             // see http://www.oracle.com/technology/oramag/oracle/06-sep/o56asktom.html
 84:             $sql = 'SELECT * FROM (SELECT t.*, ROWNUM AS "__rnum" FROM (' . $sql . ') t '
 85:                 . ($limit >= 0 ? 'WHERE ROWNUM <= ' . ((int) $offset + (int) $limit) : '')
 86:                 . ') WHERE "__rnum" > '. (int) $offset;
 87: 
 88:         } elseif ($limit >= 0) {
 89:             $sql = 'SELECT * FROM (' . $sql . ') WHERE ROWNUM <= ' . (int) $limit;
 90:         }
 91:     }
 92: 
 93: 
 94: 
 95:     /**
 96:      * Normalizes result row.
 97:      */
 98:     public function normalizeRow($row, $statement)
 99:     {
100:         return $row;
101:     }
102: 
103: }
104: 
Nette Framework 2.0beta1 (for PHP 5.2) API API documentation generated by ApiGen 2.3.0