3 * A factory class for package discovery
5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009, 2010 Hub Developer Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.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 PackageDiscoveryFactory extends ObjectFactory {
26 * Protected constructor
30 protected function __construct () {
31 // Call parent constructor
32 parent::__construct(__CLASS__);
36 * Returns a singleton network package instance. If an instance is found in
37 * the registry it will be returned, else a new instance is created and
38 * stored in the same registry entry.
40 * @return $discoveryInstance A package discovery instance
42 public static final function createPackageDiscoveryInstance () {
43 // Do we have an instance in the registry?
44 if (Registry::getRegistry()->instanceExists('package_discovery')) {
45 // Then use this instance
46 $discoveryInstance = Registry::getRegistry()->getInstance('package_discovery');
48 // Create a new instance
49 $discoveryInstance = ObjectFactory::createObjectByConfiguredName('package_recipient_discovery_class');
51 // Set the instance in registry for further use
52 Registry::getRegistry()->addInstance('package_discovery', $discoveryInstance);
55 // Return the instance
56 return $discoveryInstance;