3 * A factory class for DHT objects
5 * @author Roland Haeder <webmaster@shipsimu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 Hub Developer Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.shipsimu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class DhtObjectFactory extends ObjectFactory {
26 * Protected constructor
30 protected function __construct () {
31 // Call parent constructor
32 parent::__construct(__CLASS__);
36 * Returns a singleton (registry-based) DHT object instance
38 * @param $prefix Prefix for DHT class name and registry key
39 * @return $dhtInstance An instance of a DHT object class
41 public static final function createDhtInstance ($prefix) {
43 $name = $prefix . '_dht';
45 // If there is no handler?
46 if (Registry::getRegistry()->instanceExists($name)) {
47 // Get handler from registry
48 $dhtInstance = Registry::getRegistry()->getInstance($name);
50 // Get the handler instance
51 $dhtInstance = self::createObjectByConfiguredName($name . '_class');
53 // Add it to the registry
54 Registry::getRegistry()->addInstance($name, $dhtInstance);
57 // Return the instance