3 * A factory class for protocol handlers
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
10 * @todo Unfinished stuff
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 ProtocolHandlerFactory extends ObjectFactory {
27 * Protected constructor
31 protected function __construct () {
32 // Call parent constructor
33 parent::__construct(__CLASS__);
37 * Returns a singleton protocol handler instance. If an instance is
38 * found in registry, it will be returned, else a new instance is created
39 * and stored in the same registry entry.
41 * @param $messageType Protocol to create an object from
42 * @return $handlerInstance A protocol handler instance
44 public static final function createProtocolHandlerInstance ($messageType) {
45 // Do we have an instance in the registry?
46 if (Registry::getRegistry()->instanceExists($messageType . '_protocol_handler')) {
47 // Then use this instance
48 $handlerInstance = Registry::getRegistry()->getInstance($messageType . '_protocol_handler');
50 // Now prepare the tags instance
51 $handlerInstance = self::createObjectByConfiguredName($messageType . '_protocol_handler_class');
53 // Set the instance in registry for further use
54 Registry::getRegistry()->addInstance($messageType . '_protocol_handler', $handlerInstance);
57 // Return the instance
58 return $handlerInstance;