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\HelperRegistry

Method Detail

__debugInfosource public

__debugInfo( )

Debug friendly object properties.

Returns

array
array

__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

loadedsource public

loaded( )

Get the list of loaded objects.

Returns

array
List of object names.

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

$_loadedsource

protected array

Map of loaded objects.

[]

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http://api.cakephp.org/3.1/class-Cake.Core.ObjectRegistry.html