LazyLoadingMetadataFactory
class LazyLoadingMetadataFactory implements MetadataFactoryInterface
Creates new {@link ClassMetadataInterface} instances.
Whenever {@link getMetadataFor()} is called for the first time with a given class name or object of that class, a new metadata instance is created and returned. On subsequent requests for the same class, the same metadata instance will be returned.
You can optionally pass a {@link LoaderInterface} instance to the constructor. Whenever a new metadata instance is created, it is passed to the loader, which can configure the metadata based on configuration loaded from the filesystem or a database. If you want to use multiple loaders, wrap them in a {@link LoaderChain}.
You can also optionally pass a {@link CacheInterface} instance to the constructor. This cache will be used for persisting the generated metadata between multiple PHP requests.
Methods
| __construct(LoaderInterface $loader = null, CacheInterface $cache = null) Creates a new metadata factory. | ||
| MetadataInterface | getMetadataFor(mixed $value) Returns the metadata for the given value. | |
| bool | hasMetadataFor(mixed $value) Returns whether the class is able to return metadata for the given value. |
Details
__construct(LoaderInterface $loader = null, CacheInterface $cache = null)
Creates a new metadata factory.
Parameters
| LoaderInterface | $loader | The loader for configuring new metadata |
| CacheInterface | $cache | The cache for persisting metadata between multiple PHP requests |
MetadataInterface getMetadataFor(mixed $value)
Returns the metadata for the given value.
Parameters
| mixed | $value | Some value |
Return Value
| MetadataInterface | The metadata for the value |
Exceptions
| NoSuchMetadataException | If no metadata exists for the given value |
bool hasMetadataFor(mixed $value)
Returns whether the class is able to return metadata for the given value.
Parameters
| mixed | $value | Some value |
Return Value
| bool | Whether metadata can be returned for that value |
© 2004–2017 Fabien Potencier
Licensed under the MIT License.
http://api.symfony.com/4.0/Symfony/Component/Validator/Mapping/Factory/LazyLoadingMetadataFactory.html