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 PostgreSQL database driver.
20: *
21: * @author David Grudl
22: */
23: class PgSqlDriver 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:
32:
33: public function __construct(Nette\Database\Connection $connection, array $options)
34: {
35: $this->connection = $connection;
36: }
37:
38:
39:
40: /********************* SQL ****************d*g**/
41:
42:
43:
44: /**
45: * Delimites identifier for use in a SQL statement.
46: */
47: public function delimite($name)
48: {
49: // @see http://www.postgresql.org/docs/8.2/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
50: return '"' . str_replace('"', '""', $name) . '"';
51: }
52:
53:
54:
55: /**
56: * Formats date-time for use in a SQL statement.
57: */
58: public function formatDateTime(\DateTime $value)
59: {
60: return $value->format("'Y-m-d H:i:s'");
61: }
62:
63:
64:
65: /**
66: * Encodes string for use in a LIKE statement.
67: */
68: public function formatLike($value, $pos)
69: {
70: throw new Nette\NotImplementedException;
71: }
72:
73:
74:
75: /**
76: * Injects LIMIT/OFFSET to the SQL query.
77: */
78: public function applyLimit(&$sql, $limit, $offset)
79: {
80: if ($limit >= 0)
81: $sql .= ' LIMIT ' . (int) $limit;
82:
83: if ($offset > 0)
84: $sql .= ' OFFSET ' . (int) $offset;
85: }
86:
87:
88:
89: /**
90: * Normalizes result row.
91: */
92: public function normalizeRow($row, $statement)
93: {
94: return $row;
95: }
96:
97: }
98: