File class\database\databasefactory.php

1:	<?php
2:	/**
3:	* Factory Class for XOOPS Database
4:	*
5:	* You may not change or alter any portion of this comment or credits
6:	* of supporting developers from this source code or any supporting source code
7:	* which is considered copyrighted (c) material of the original comment or credit authors.
8:	* This program is distributed in the hope that it will be useful,
9:	* but WITHOUT ANY WARRANTY; without even the implied warranty of
10:	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11:	*
12:	* @copyright (c) 2000-2016 XOOPS Project (www.xoops.org)
13:	* @license GNU GPL 2 (https://www.gnu.org/licenses/gpl-2.0.html)
14:	* @package kernel
15:	* @subpackage database
16:	*/
17:	defined('XOOPS_ROOT_PATH') \|\| exit('Restricted access');
18:
19:	/**
20:	* XoopsDatabaseFactory
21:	*
22:	* @package Kernel
23:	* @author Kazumi Ono <onokazu@xoops.org>
24:	* @access public
25:	*/
26:	class XoopsDatabaseFactory
27:	{
28:	/**
29:	* XoopsDatabaseFactory constructor.
30:	*/
31:	public function __construct()
32:	{
33:	}
34:
35:	/**
36:	* Get a reference to the only instance of database class and connects to DB
37:	*
38:	* if the class has not been instantiated yet, this will also take
39:	* care of that
40:	*
41:	* @static
42:	* @staticvar XoopsDatabase The only instance of database class
43:	* @return XoopsDatabase Reference to the only instance of database class
44:	*/
45:	public static function getDatabaseConnection()
46:	{
47:	static $instance;
48:	if (!isset($instance)) {
49:	if (file_exists($file = XOOPS_ROOT_PATH . '/class/database/' . XOOPS_DB_TYPE . 'database.php')) {
50:	require_once $file;
51:
52:	if (!defined('XOOPS_DB_PROXY')) {
53:	$class = 'Xoops' . XOOPS_DB_TYPE . 'DatabaseSafe';
54:	} else {
55:	$class = 'Xoops' . XOOPS_DB_TYPE . 'DatabaseProxy';
56:	}
57:
58:	$xoopsPreload = XoopsPreload::getInstance();
59:	$xoopsPreload->triggerEvent('core.class.database.databasefactory.connection', array(&$class));
60:
61:	$instance = new $class();
62:	$instance->setLogger(XoopsLogger::getInstance());
63:	$instance->setPrefix(XOOPS_DB_PREFIX);
64:	if (!$instance->connect()) {
65:	trigger_error('notrace:Unable to connect to database', E_USER_ERROR);
66:	}
67:	} else {
68:	trigger_error('notrace:Failed to load database of type: ' . XOOPS_DB_TYPE . ' in file: ' . __FILE__ . ' at line ' . __LINE__, E_USER_WARNING);
69:	}
70:	}
71:
72:	return $instance;
73:	}
74:
75:	/**
76:	* Gets a reference to the only instance of database class. Currently,
77:	* only being used within the installer.
78:	*
79:	* @static
80:	* @staticvar object The only instance of database class
81:	* @return object Reference to the only instance of database class
82:	*/
83:	public static function getDatabase()
84:	{
85:	static $database;
86:	if (!isset($database)) {
87:	if (file_exists($file = XOOPS_ROOT_PATH . '/class/database/' . XOOPS_DB_TYPE . 'database.php')) {
88:	include_once $file;
89:	if (!defined('XOOPS_DB_PROXY')) {
90:	$class = 'Xoops' . XOOPS_DB_TYPE . 'DatabaseSafe';
91:	} else {
92:	$class = 'Xoops' . XOOPS_DB_TYPE . 'DatabaseProxy';
93:	}
94:	unset($database);
95:	$database = new $class();
96:	} else {
97:	trigger_error('notrace:Failed to load database of type: ' . XOOPS_DB_TYPE . ' in file: ' . __FILE__ . ' at line ' . __LINE__, E_USER_WARNING);
98:	}
99:	}
100:
101:	return $database;
102:	}
103:	}
104:

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