SingletonTrait.php
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * ====================================================================== |
| 5 | * LICENSE: This file is subject to the terms and conditions defined in * |
| 6 | * file 'license.txt', which is part of this source code package. * |
| 7 | * ====================================================================== |
| 8 | * |
| 9 | * @version 6.0.0 |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * Reusable elements for singletons |
| 14 | * |
| 15 | * @package AAM |
| 16 | * @version 6.0.0 |
| 17 | */ |
| 18 | trait AAM_Core_Contract_SingletonTrait |
| 19 | { |
| 20 | |
| 21 | /** |
| 22 | * Single instance of itself |
| 23 | * |
| 24 | * @var object |
| 25 | * |
| 26 | * @access private |
| 27 | */ |
| 28 | private static $_instance = null; |
| 29 | |
| 30 | /** |
| 31 | * Constructor |
| 32 | * |
| 33 | * @access protected |
| 34 | * @version 6.0.0 |
| 35 | */ |
| 36 | protected function __construct() |
| 37 | { } |
| 38 | |
| 39 | /** |
| 40 | * Bootstrap the object |
| 41 | * |
| 42 | * @return self |
| 43 | * |
| 44 | * @access public |
| 45 | * @version 6.0.0 |
| 46 | */ |
| 47 | public static function bootstrap() |
| 48 | { |
| 49 | if (is_null(self::$_instance)) { |
| 50 | self::$_instance = new self; |
| 51 | } |
| 52 | |
| 53 | return self::$_instance; |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Get single instance of itself |
| 58 | * |
| 59 | * @return self |
| 60 | * |
| 61 | * @access public |
| 62 | * @version 6.0.0 |
| 63 | */ |
| 64 | public static function getInstance() |
| 65 | { |
| 66 | if (is_null(self::$_instance)) { |
| 67 | self::$_instance = self::bootstrap(); |
| 68 | } |
| 69 | |
| 70 | return self::$_instance; |
| 71 | } |
| 72 | |
| 73 | } |