3 * A registry for several data types and objects. Objects should be added by
4 * addInstance() and therefore must implement the interface Registerable.
6 * @author Roland Haeder <webmaster@shipsimu.org>
8 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2013 Core Developer Team
9 * @license GNU GPL 3.0 or any newer version
10 * @link http://www.shipsimu.org
12 * This program is free software: you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation, either version 3 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 class Registry extends BaseRegistry implements Register {
27 * Instance of this class
29 private static $registryInstance = NULL;
32 * Protected constructor
36 protected function __construct () {
37 // Call parent constructor
38 parent::__construct(__CLASS__);
42 * Singleton getter for self instance. This class has no factory pattern
43 * because here is no need for special parameters.
45 * @return $registryInstance Instance of this class
47 public static final function getRegistry () {
48 // Is an instance there?
49 if (is_null(self::$registryInstance)) {
50 // Not yet, so create one
51 self::$registryInstance = new Registry();
54 // Return the instance
55 return self::$registryInstance;