/
class_registry.php
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/
class_registry.php
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<?php
/* SVN FILE: $Id$ */
/**
* Class collections.
*
* A repository for class objects, each registered with a key.
*
* PHP versions 4 and 5
*
* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
* Copyright (c) 2005, CakePHP Authors/Developers
*
* Author(s): Michal Tatarynowicz aka Pies <tatarynowicz@gmail.com>
* Larry E. Masters aka PhpNut <nut@phpnut.com>
* Kamil Dzielinski aka Brego <brego.dk@gmail.com>
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @author CakePHP Authors/Developers
* @copyright Copyright (c) 2005, CakePHP Authors/Developers
* @link https://trac.cakephp.org/wiki/Authors Authors/Developers
* @package cake
* @subpackage cake.libs
* @since CakePHP v 0.9.2
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Class Collections.
*
* A repository for class objects, each registered with a key.
* If you try to add an object with the same key twice, nothing will come of it.
* If you need a second instance of an object, give it another key.
*
* @package cake
* @subpackage cake.libs
* @since CakePHP v 0.9.2
*/
class ClassRegistry
{
/**
* Names of classes with their objects.
*
* @var array
* @access private
*/
var $_objects = array();
/**
* Return a singleton instance of the ClassRegistry.
*
* @return ClassRegistry instance
*/
function &getInstance() {
static $instance = array();
if (!$instance)
{
$instance[0] =& new ClassRegistry;
}
return $instance[0];
}
/**
* Add $object to the registry, associating it with the name $key.
*
* @param string $key
* @param mixed $object
*/
function addObject($key, &$object)
{
$key = strtolower($key);
if (array_key_exists($key, $this->_objects) === false)
{
$this->_objects[$key] =& $object;
}
}
/**
* Returns true if given key is present in the ClassRegistry.
*
* @param string $key Key to look for
* @return boolean Success
*/
function isKeySet($key)
{
$key = strtolower($key);
return array_key_exists($key, $this->_objects);
}
/**
* Return object which corresponds to given key.
*
* @param string $key
* @return mixed
*/
function &getObject($key)
{
$key = strtolower($key);
return $this->_objects[$key];
}
}
?>