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<?php |
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declare(strict_types=1); |
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namespace RemotelyLiving\PHPQueryBus; |
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use Psr\Container\ContainerInterface; |
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use RemotelyLiving\PHPQueryBus\Exceptions; |
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use RemotelyLiving\PHPQueryBus\Interfaces; |
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final class Resolver implements Interfaces\Resolver |
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{ |
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private ?ContainerInterface $container; |
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/** |
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* @var \RemotelyLiving\PHPQueryBus\Interfaces\Handler[] |
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*/ |
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private array $map = []; |
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/** |
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* @var callable[] |
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*/ |
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private array $deferred = []; |
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public function __construct(ContainerInterface $container = null) |
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{ |
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$this->container = $container; |
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} |
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public static function create(ContainerInterface $container = null): Interfaces\Resolver |
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{ |
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return new static($container); |
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} |
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public function resolve(object $query): Interfaces\Handler |
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{ |
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$queryClass = get_class($query); |
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if ($this->container && $this->container->has($queryClass)) { |
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return $this->container->get($queryClass); |
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} |
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if (isset($this->map[$queryClass])) { |
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return $this->map[$queryClass]; |
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} |
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if (isset($this->deferred[$queryClass])) { |
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$this->map[$queryClass] = $this->deferred[$queryClass](); |
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unset($this->deferred[$queryClass]); |
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return $this->map[$queryClass]; |
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} |
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throw new Exceptions\OutOfBounds("Query Handler for {$queryClass} not found"); |
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} |
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public function pushHandler(string $queryClass, Interfaces\Handler $handler): Interfaces\Resolver |
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{ |
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$this->map[$queryClass] = $handler; |
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return $this; |
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} |
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public function pushHandlerDeferred(string $class, callable $handlerFn): Interfaces\Resolver |
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{ |
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$this->deferred[$class] = $handlerFn; |
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return $this; |
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} |
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} |
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remotelyliving /
php-query-bus
