PHP Classes

File: include/patterns/Singleton.lib

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File: include/patterns/Singleton.lib
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Box Model
Create Web applications based on boxes
Author: By
Last change:
Date: 10 years ago
Size: 2,185 bytes


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<?php /* Singleton.lib, DomCore, the WebAbility(r) Core System Contains the singleton pattern class (c) 2008-2012 Philippe Thomassigny This file is part of DomCore DomCore is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. DomCore is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with DomCore. If not, see <>. */ /* @UML_Box -- Do not edit |------------------------------------------------------------------| | Singleton : singleton pattern class | |------------------------------------------------------------------| | - ::instance : array(Singleton) | |------------------------------------------------------------------| | + new Singleton() | | + ::getInstance($name: string): Singleton extended | | + __clone(): object | |------------------------------------------------------------------| @End_UML_Box */ class Singleton extends WAObject { private static $instance = array(); public function __construct() { if (isset(self::$instance[get_class($this)])) throw new PatternError(WAMessage::getMessage('Singleton.noclone').get_class($this)); parent::__construct(); self::$instance[get_class($this)] = $this; } public static function getInstance($classname = null) { if (!$classname) $classname = get_called_class(); if (!isset(self::$instance[$classname])) new $classname(); return self::$instance[$classname]; } public function __clone() { throw new PatternError(WAMessage::getMessage('Singleton.noclone').get_class($this)); } } ?>