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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Factory; |
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use Psr\Container\ContainerInterface; |
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use Yiisoft\Definitions\ArrayDefinition; |
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use Yiisoft\Definitions\Contract\DefinitionInterface; |
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use Yiisoft\Definitions\Helpers\DefinitionValidator; |
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use Yiisoft\Definitions\Exception\CircularReferenceException; |
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use Yiisoft\Definitions\Exception\InvalidConfigException; |
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use Yiisoft\Definitions\Exception\NotInstantiableException; |
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use Yiisoft\Definitions\Helpers\Normalizer; |
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use function is_string; |
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/** |
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* Factory allows creating objects passing arguments runtime. |
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* A factory will try to use a PSR-11 compliant container to get dependencies, |
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* but will fall back to manual instantiation |
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* if the container cannot provide a required dependency. |
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*/ |
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final class Factory |
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{ |
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private FactoryInternalContainer $internalContainer; |
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/** |
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* @var bool $validate If definitions should be validated when set. |
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*/ |
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private bool $validate; |
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/** |
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* Factory constructor. |
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* |
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* @param ContainerInterface $container Container to use for resolving dependencies. |
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* @param array $definitions Definitions to create objects with. |
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* @psalm-param array<string, mixed> $definitions |
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* |
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* @param bool $validate If definitions should be validated when set. |
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* |
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* @throws InvalidConfigException |
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*/ |
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public function __construct( |
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ContainerInterface $container, |
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array $definitions = [], |
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bool $validate = true |
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) { |
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$this->validate = $validate; |
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$this->validateDefinitions($definitions); |
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$this->internalContainer = new FactoryInternalContainer($container, $definitions); |
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} |
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/** |
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* @param array $definitions Definitions to create objects with. |
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* @psalm-param array<string, mixed> $definitions |
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* |
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* @throws InvalidConfigException |
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* |
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* @return self |
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*/ |
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public function withDefinitions(array $definitions): self |
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{ |
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$this->validateDefinitions($definitions); |
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$new = clone $this; |
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$new->internalContainer = $this->internalContainer->withDefinitions($definitions); |
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return $new; |
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} |
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/** |
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* @param array $definitions Definitions to validate. |
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* @psalm-param array<string, mixed> $definitions |
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* @throws InvalidConfigException |
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*/ |
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private function validateDefinitions(array $definitions): void |
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{ |
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if ($this->validate) { |
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/** @var mixed $definition */ |
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foreach ($definitions as $id => $definition) { |
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DefinitionValidator::validate($definition, $id); |
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} |
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} |
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} |
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/** |
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* Creates a new object using the given configuration. |
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* |
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* You may view this method as an enhanced version of the `new` operator. |
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* The method supports creating an object based on a class name, a configuration array or |
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* an anonymous function. |
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* |
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* Below are some usage examples: |
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* |
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* ```php |
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* // create an object using a class name |
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* $object = $factory->create(\Yiisoft\Db\Connection::class); |
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* |
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* // create an object using a configuration array |
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* $object = $factory->create([ |
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* 'class' => \Yiisoft\Db\Connection\Connection::class, |
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* '__construct()' => [ |
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* 'dsn' => 'mysql:host=127.0.0.1;dbname=demo', |
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* ], |
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* 'setUsername()' => ['root'], |
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* 'setPassword()' => [''], |
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* 'setCharset()' => ['utf8'], |
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* ]); |
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* ``` |
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* |
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* Using [[Container|dependency injection container]], this method can also identify |
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* dependent objects, instantiate them and inject them into the newly created object. |
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* |
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* @param mixed $config The object configuration. This can be specified in one of the following forms: |
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* |
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* - A string: representing the class name of the object to be created. |
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* |
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* - A configuration array: the array must contain a `class` element which is treated as the object class, |
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* and the rest of the name-value pairs will be used to initialize the corresponding object properties. |
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* |
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* - A PHP callable: either an anonymous function or an array representing a class method |
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* (`[$class or $object, $method]`). The callable should return a new instance of the object being created. |
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* |
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* @throws InvalidConfigException If the configuration is invalid. |
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* @throws CircularReferenceException |
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* @throws NotFoundException |
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* @throws NotInstantiableException |
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* |
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* @return mixed|object The created object. |
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* |
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* @psalm-template T |
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* @psalm-param mixed|class-string<T> $config |
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* @psalm-return ($config is class-string ? T : mixed) |
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* @psalm-suppress MixedReturnStatement |
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*/ |
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public function create($config) |
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{ |
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if ($this->validate) { |
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DefinitionValidator::validate($config); |
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} |
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if (is_string($config)) { |
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if ($this->internalContainer->hasDefinition($config)) { |
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$definition = $this->internalContainer->getDefinition($config); |
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} elseif (class_exists($config)) { |
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$definition = ArrayDefinition::fromPreparedData($config); |
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} else { |
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throw new NotFoundException($config); |
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} |
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} else { |
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$definition = $this->createDefinition($config); |
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} |
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return $this->internalContainer->create($definition); |
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} |
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/** |
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* @param mixed $config |
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* |
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* @throws InvalidConfigException |
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*/ |
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private function createDefinition($config): DefinitionInterface |
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{ |
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$definition = Normalizer::normalize($config); |
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if ( |
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($definition instanceof ArrayDefinition) && |
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$this->internalContainer->hasDefinition($definition->getClass()) && |
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($containerDefinition = $this->internalContainer->getDefinition($definition->getClass())) instanceof ArrayDefinition |
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) { |
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$definition = $this->mergeDefinitions( |
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$containerDefinition, |
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$definition |
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); |
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} |
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return $definition; |
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} |
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private function mergeDefinitions(DefinitionInterface $one, ArrayDefinition $two): DefinitionInterface |
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{ |
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return $one instanceof ArrayDefinition ? $one->merge($two) : $two; |
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} |
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} |
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yiisoft /
factory
