3 * A factory class for unit sources
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 UnitSourceFactory extends ObjectFactory {
26 * Protected constructor
30 protected function __construct () {
31 // Call parent constructor
32 parent::__construct(__CLASS__);
36 * Creates an instance of a configurable and singleton unit source
38 * @param $unitType Type of the unit source
39 * @return $sourceInstance A UnitSource class instance
41 public static final function createUnitSourceInstance ($unitType) {
43 if (!Registry::getRegistry()->instanceExists($unitType . '_unit_source')) {
44 // Then construct the class' configuraton entry
45 $className = '' . $unitType . '_unit_source_class';
47 // Get a class from that configuration entry
48 $sourceInstance = self::createObjectByConfiguredName($className);
50 // Add it to the registry
51 Registry::getRegistry()->addInstance($unitType . '_unit_source', $sourceInstance);
53 // Get it from registry
54 $sourceInstance = Registry::getRegistry()->getInstance($unitType . '_unit_source');
57 // For any purposes, return the source instance
58 return $sourceInstance;