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[core.git] / framework / main / classes / factories / database / class_DatabaseFrontendFactory.php
1 <?php
2 // Own namespace
3 namespace Org\Mxchange\CoreFramework\Factory\Database\Frontend;
4
5 // Import framework stuff
6 use Org\Mxchange\CoreFramework\Factory\BaseFactory;
7 use Org\Mxchange\CoreFramework\Factory\Object\ObjectFactory;
8 use Org\Mxchange\CoreFramework\Registry\GenericRegistry;
9
10 /**
11  * A factory class for socket registries
12  *
13  * @author              Roland Haeder <webmaster@shipsimu.org>
14  * @version             0.0.0
15  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2023 Core Developer Team
16  * @license             GNU GPL 3.0 or any newer version
17  * @link                http://www.shipsimu.org
18  *
19  * This program is free software: you can redistribute it and/or modify
20  * it under the terms of the GNU General Public License as published by
21  * the Free Software Foundation, either version 3 of the License, or
22  * (at your option) any later version.
23  *
24  * This program is distributed in the hope that it will be useful,
25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27  * GNU General Public License for more details.
28  *
29  * You should have received a copy of the GNU General Public License
30  * along with this program. If not, see <http://www.gnu.org/licenses/>.
31  */
32 class DatabaseFrontendFactory extends BaseFactory {
33         /**
34          * Protected constructor
35          *
36          * @return      void
37          */
38         private function __construct () {
39                 // Call parent constructor
40                 parent::__construct(__CLASS__);
41         }
42
43         /**
44          * Returns a singleton socket registry instance. If an instance is found in
45          * the registry it will be returned, else a new instance is created and
46          * stored in the same registry entry.
47          *
48          * @return      $frontendInstance       A database frontend instance
49          */
50         public static final function createFrontendByConfiguredName (string $frontendName) {
51                 // Get registry instance
52                 $registryInstance = GenericRegistry::getRegistry();
53
54                 // Do we have an instance in the registry?
55                 if ($registryInstance->instanceExists($frontendName)) {
56                         // Then use this instance
57                         $frontendInstance = $registryInstance->getInstance($frontendName);
58                 } else {
59                         // Get the registry instance
60                         $frontendInstance = ObjectFactory::createObjectByConfiguredName($frontendName);
61
62                         // Set the instance in registry for further use
63                         $registryInstance->addInstance($frontendName, $frontendInstance);
64                 }
65
66                 // Return the instance
67                 return $frontendInstance;
68         }
69
70 }