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<?php |
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/** |
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* Copyright 2016, Cake Development Corporation (http://cakedc.com) |
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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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* @copyright Copyright 2016, Cake Development Corporation (http://cakedc.com) |
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php) |
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*/ |
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namespace CakeDC\Api\Service; |
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use CakeDC\Api\Service\Exception\MissingExtensionException; |
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use Cake\Core\App; |
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use Cake\Core\ObjectRegistry; |
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use Cake\Event\EventDispatcherTrait; |
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/** |
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* Class ExtensionRegistry |
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* |
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* @package CakeDC\Api\Service |
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*/ |
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class ExtensionRegistry extends ObjectRegistry |
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{ |
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use EventDispatcherTrait; |
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/** |
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* The Service that this collection was initialized with. |
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* |
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* @var Service |
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*/ |
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protected $_service = null; |
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/** |
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* Constructor. |
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* |
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* @param Service $service Service instance. |
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*/ |
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public function __construct(Service $service = null) |
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{ |
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if ($service) { |
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$this->_service = $service; |
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} |
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} |
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/** |
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* Should resolve the classname for a given object type. |
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* |
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* @param string $class The class to resolve. |
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* @return string|false The resolved name or false for failure. |
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*/ |
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protected function _resolveClassName($class) |
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{ |
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$result = App::className($class, 'Service/Extension', 'Extension'); |
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if ($result || strpos($class, '.') !== false) { |
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return $result; |
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} |
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return App::className('CakeDC/Api.' . $class, 'Service/Extension', 'Extension'); |
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} |
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/** |
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* Throw an exception when the requested object name is missing. |
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* |
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* @param string $class The class that is missing. |
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* @param string $plugin The plugin $class is missing from. |
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* @return void |
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* @throws \Exception |
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*/ |
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protected function _throwMissingClassError($class, $plugin) |
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{ |
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throw new MissingExtensionException([ |
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'class' => $class . 'Extension', |
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'plugin' => $plugin |
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]); |
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} |
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/** |
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* Create an instance of a given classname. |
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* |
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* This method should construct and do any other initialization logic |
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* required. |
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* |
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* @param string $class The class to build. |
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* @param string $alias The alias of the object. |
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* @param array $config The Configuration settings for construction |
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* @return mixed |
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*/ |
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protected function _create($class, $alias, $config) |
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{ |
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if (empty($config['service'])) { |
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$config['service'] = $this->_service; |
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} |
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$instance = new $class($this, $config); |
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$this->eventManager()->on($instance); |
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return $instance; |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: