Class ObjectRegistry
Acts as a registry/factory for objects.
Provides registry & factory functionality for object types. Used as a super class for various composition based re-use features in CakePHP.
Each subclass needs to implement the various abstract methods to complete the template method load().
The ObjectRegistry is EventManager aware, but each extending class will need to use \Cake\Event\EventDispatcherTrait to attach and detach on set and bind
Direct known subclasses
Cake\Cache\CacheRegistry, Cake\Console\HelperRegistry, Cake\Console\TaskRegistry, Cake\Controller\ComponentRegistry, Cake\Datasource\ConnectionRegistry, Cake\Log\LogEngineRegistry, Cake\ORM\BehaviorRegistry, Cake\View\HelperRegistryNamespace: Cake\Core
See:
Cake\Controller\ComponentRegistry
See:
Cake\View\HelperRegistry
See:
Cake\Console\TaskRegistry
Located at Core/ObjectRegistry.php
Method Detail
__getsource public
__get( string $name )
Provide public read access to the loaded objects
Parameters
- string
$name
- Name of property to read
Returns
mixed
mixed
__issetsource public
__isset( string $name )
Provide isset access to _loaded
Parameters
- string
$name
- Name of object being checked.
Returns
boolean
bool
_checkDuplicatesource protected
_checkDuplicate( string $name , array $config )
Check for duplicate object loading.
If a duplicate is being loaded and has different configuration, that is bad and an exception will be raised.
An exception is raised, as replacing the object will not update any references other objects may have. Additionally, simply updating the runtime configuration is not a good option as we may be missing important constructor logic dependent on the configuration.
Parameters
- string
$name
- The name of the alias in the registry.
- array
$config
- The config data for the new instance.
Throws
RuntimeException
When a duplicate is found.
_createsource abstract protected
_create( string $class , string $alias , array $config )
Create an instance of a given classname.
This method should construct and do any other initialization logic required.
Parameters
- string
$class
- The class to build.
- string
$alias
- The alias of the object.
- array
$config
- The Configuration settings for construction
Returns
mixed
mixed
_resolveClassNamesource abstract protected
_resolveClassName( string $class )
Should resolve the classname for a given object type.
Parameters
- string
$class
- The class to resolve.
Returns
string|false
The resolved name or false for failure.
_throwMissingClassErrorsource abstract protected
_throwMissingClassError( string $class , string $plugin )
Throw an exception when the requested object name is missing.
Parameters
- string
$class
- The class that is missing.
- string
$plugin
- The plugin $class is missing from.
Throws
Exception
\Exception
getsource public
get( string $name )
Get loaded object instance.
Parameters
- string
$name
- Name of object.
Returns
object|null
Object instance if loaded else null.
hassource public
has( string $name )
Check whether or not a given object is loaded.
Parameters
- string
$name
- The object name to check for.
Returns
boolean
True is object is loaded else false.
loadsource public
load( string $objectName , array $config [] )
Loads/constructs an object instance.
Will return the instance in the registry if it already exists. If a subclass provides event support, you can use $config['enabled'] = false
to exclude constructed objects from being registered for events.
Using Cake\Controller\Controller::$components as an example. You can alias an object by setting the 'className' key, i.e.,
public $components = [ 'Email' => [ 'className' => '\App\Controller\Component\AliasedEmailComponent' ]; ];
All calls to the Email
component would use AliasedEmail
instead.
Parameters
- string
$objectName
- The name/class of the object to load.
- array
$config
optional [] - Additional settings to use when loading the object.
Returns
mixed
mixed
normalizeArraysource public
normalizeArray( array $objects )
Normalizes an object array, creates an array that makes lazy loading easier
Parameters
- array
$objects
- Array of child objects to normalize.
Returns
array
Array of normalized objects.
resetsource public
reset( )
Clear loaded instances in the registry.
If the registry subclass has an event manager, the objects will be detached from events as well.
setsource public
set( string $objectName , object $object )
Set an object directly into the registry by name.
If this collection implements events, the passed object will be attached into the event manager
Parameters
- string
$objectName
- The name of the object to set in the registry.
- object
$object
- instance to store in the registry
unloadsource public
unload( string $objectName )
Remove an object from the registry.
If this registry has an event manager, the object will be detached from any events as well.
Parameters
- string
$objectName
- The name of the object to remove from the registry.
Properties summary
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Licensed under the MIT License.
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http://api.cakephp.org/3.1/class-Cake.Core.ObjectRegistry.html