1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Database\Drivers;
  9: 
 10: use Nette;
 11: 
 12: 
 13: /**
 14:  * Supplemental MS SQL database driver.
 15:  *
 16:  * @author     David Grudl
 17:  */
 18: class MsSqlDriver extends Nette\Object implements Nette\Database\ISupplementalDriver
 19: {
 20: 
 21: 
 22:     /********************* SQL ****************d*g**/
 23: 
 24: 
 25:     /**
 26:      * Delimites identifier for use in a SQL statement.
 27:      */
 28:     public function delimite($name)
 29:     {
 30:         // @see http://msdn.microsoft.com/en-us/library/ms176027.aspx
 31:         return '[' . str_replace(array('[', ']'), array('[[', ']]'), $name) . ']';
 32:     }
 33: 
 34: 
 35:     /**
 36:      * Formats boolean for use in a SQL statement.
 37:      */
 38:     public function formatBool($value)
 39:     {
 40:         return $value ? '1' : '0';
 41:     }
 42: 
 43: 
 44:     /**
 45:      * Formats date-time for use in a SQL statement.
 46:      */
 47:     public function formatDateTime(\DateTime $value)
 48:     {
 49:         return $value->format("'Y-m-d H:i:s'");
 50:     }
 51: 
 52: 
 53:     /**
 54:      * Encodes string for use in a LIKE statement.
 55:      */
 56:     public function formatLike($value, $pos)
 57:     {
 58:         $value = strtr($value, array("'" => "''", '%' => '[%]', '_' => '[_]', '[' => '[[]'));
 59:         return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
 60:     }
 61: 
 62: 
 63:     /**
 64:      * Injects LIMIT/OFFSET to the SQL query.
 65:      */
 66:     public function applyLimit(& $sql, $limit, $offset)
 67:     {
 68:         if ($limit >= 0) {
 69:             $sql = 'SELECT TOP ' . (int) $limit . ' * FROM (' . $sql . ') t';
 70:         }
 71: 
 72:         if ($offset) {
 73:             throw new Nette\NotImplementedException('Offset is not implemented.');
 74:         }
 75:     }
 76: 
 77: 
 78:     /**
 79:      * Normalizes result row.
 80:      */
 81:     public function normalizeRow($row, $statement)
 82:     {
 83:         return $row;
 84:     }
 85: 
 86: 
 87:     /********************* reflection ****************d*g**/
 88: 
 89: 
 90:     /**
 91:      * Returns list of tables.
 92:      */
 93:     public function getTables()
 94:     {
 95:         throw new Nette\NotImplementedException;
 96:     }
 97: 
 98: 
 99:     /**
100:      * Returns metadata for all columns in a table.
101:      */
102:     public function getColumns($table)
103:     {
104:         throw new Nette\NotImplementedException;
105:     }
106: 
107: 
108:     /**
109:      * Returns metadata for all indexes in a table.
110:      */
111:     public function getIndexes($table)
112:     {
113:         throw new Nette\NotImplementedException;
114:     }
115: 
116: 
117:     /**
118:      * Returns metadata for all foreign keys in a table.
119:      */
120:     public function getForeignKeys($table)
121:     {
122:         throw new Nette\NotImplementedException;
123:     }
124: 
125: 
126:     /**
127:      * @return bool
128:      */
129:     public function isSupported($item)
130:     {
131:         return $item === self::SUPPORT_COLUMNS_META;
132:     }
133: 
134: }
135: