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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:  */
 11: 
 12: namespace Nette\Database\Drivers;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * Supplemental Oracle database driver.
 20:  *
 21:  * @author     David Grudl
 22:  */
 23: class OciDriver extends Nette\Object implements Nette\Database\ISupplementalDriver
 24: {
 25:     /** @var array */
 26:     public $supports = array('meta' => TRUE);
 27: 
 28:     /** @var Nette\Database\Connection */
 29:     private $connection;
 30: 
 31:     /** @var string  Datetime format */
 32:     private $fmtDateTime;
 33: 
 34: 
 35: 
 36:     public function __construct(Nette\Database\Connection $connection, array $options)
 37:     {
 38:         $this->connection = $connection;
 39:         $this->fmtDateTime = isset($options['formatDateTime']) ? $options['formatDateTime'] : 'U';
 40:     }
 41: 
 42: 
 43: 
 44:     /********************* SQL ****************d*g**/
 45: 
 46: 
 47: 
 48:     /**
 49:      * Delimites identifier for use in a SQL statement.
 50:      */
 51:     public function delimite($name)
 52:     {
 53:         // @see http://download.oracle.com/docs/cd/B10500_01/server.920/a96540/sql_elements9a.htm
 54:         return '"' . str_replace('"', '""', $name) . '"';
 55:     }
 56: 
 57: 
 58: 
 59:     /**
 60:      * Formats date-time for use in a SQL statement.
 61:      */
 62:     public function formatDateTime(\DateTime $value)
 63:     {
 64:         return $value->format($this->fmtDateTime);
 65:     }
 66: 
 67: 
 68: 
 69:     /**
 70:      * Encodes string for use in a LIKE statement.
 71:      */
 72:     public function formatLike($value, $pos)
 73:     {
 74:         throw new Nette\NotImplementedException;
 75:     }
 76: 
 77: 
 78: 
 79:     /**
 80:      * Injects LIMIT/OFFSET to the SQL query.
 81:      */
 82:     public function applyLimit(&$sql, $limit, $offset)
 83:     {
 84:         if ($offset > 0) {
 85:             // see http://www.oracle.com/technology/oramag/oracle/06-sep/o56asktom.html
 86:             $sql = 'SELECT * FROM (SELECT t.*, ROWNUM AS "__rnum" FROM (' . $sql . ') t '
 87:                 . ($limit >= 0 ? 'WHERE ROWNUM <= ' . ((int) $offset + (int) $limit) : '')
 88:                 . ') WHERE "__rnum" > '. (int) $offset;
 89: 
 90:         } elseif ($limit >= 0) {
 91:             $sql = 'SELECT * FROM (' . $sql . ') WHERE ROWNUM <= ' . (int) $limit;
 92:         }
 93:     }
 94: 
 95: 
 96: 
 97:     /**
 98:      * Normalizes result row.
 99:      */
100:     public function normalizeRow($row, $statement)
101:     {
102:         return $row;
103:     }
104: 
105: }
106: 
Nette Framework 2.0beta1 API API documentation generated by ApiGen 2.3.0