108 lines
2.7 KiB
PHP
108 lines
2.7 KiB
PHP
<?php
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/* SVN FILE: $Id: class_registry.php,v 1.1 2006-08-27 01:54:31 shaver%mozilla.org Exp $ */
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/**
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* Class collections.
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*
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* A repository for class objects, each registered with a key.
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*
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* PHP versions 4 and 5
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*
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* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright (c) 2006, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright (c) 2006, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
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* @package cake
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* @subpackage cake.cake.libs
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* @since CakePHP v 0.9.2
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* @version $Revision: 1.1 $
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* @modifiedby $LastChangedBy: phpnut $
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* @lastmodified $Date: 2006-08-27 01:54:31 $
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Class Collections.
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*
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* A repository for class objects, each registered with a key.
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* If you try to add an object with the same key twice, nothing will come of it.
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* If you need a second instance of an object, give it another key.
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*
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* @package cake
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* @subpackage cake.cake.libs
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*/
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class ClassRegistry{
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/**
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* Names of classes with their objects.
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*
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* @var array
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* @access private
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*/
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var $_objects = array();
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/**
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* Return a singleton instance of the ClassRegistry.
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*
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* @return ClassRegistry instance
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*/
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function &getInstance() {
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static $instance = array();
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if (!$instance) {
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$instance[0] = &new ClassRegistry;
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}
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return $instance[0];
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}
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/**
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* Add $object to the registry, associating it with the name $key.
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*
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* @param string $key
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* @param mixed $object
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*/
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function addObject($key, &$object) {
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$_this =& ClassRegistry::getInstance();
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$key = strtolower($key);
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if (array_key_exists($key, $_this->_objects) === false) {
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$_this->_objects[$key] = &$object;
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}
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}
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/**
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* Remove object which corresponds to given key.
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*
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* @param string $key
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* @return void
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*/
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function removeObject($key) {
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$_this =& ClassRegistry::getInstance();
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$key = strtolower($key);
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if (array_key_exists($key, $_this->_objects) === true) {
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unset($_this->_objects[$key]);
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}
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}
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/**
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* Returns true if given key is present in the ClassRegistry.
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*
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* @param string $key Key to look for
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* @return boolean Success
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*/
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function isKeySet($key) {
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$_this =& ClassRegistry::getInstance();
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$key = strtolower($key);
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return array_key_exists($key, $_this->_objects);
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}
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/**
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* Return object which corresponds to given key.
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*
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* @param string $key
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* @return mixed
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*/
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function &getObject($key) {
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$_this =& ClassRegistry::getInstance();
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$key = strtolower($key);
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return $_this->_objects[$key];
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}
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}
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?>
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