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