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<?php declare(strict_types=1); |
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namespace Stratadox\EntityState; |
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use ReflectionProperty; |
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/** |
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* Definition for new entities. |
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* |
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* @todo Provide a better way to extract the identifier |
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* Current limitations: |
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* - Identity must be in a single property (no compounds) |
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* - Identity property cannot be located in a parent class |
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* @author Stratadox |
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*/ |
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final class AnEntity implements DefinesEntityType |
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{ |
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private $class; |
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private $identifierProperty; |
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private function __construct( |
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string $class, |
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?ReflectionProperty $identifierProperty |
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) { |
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$this->class = $class; |
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$this->identifierProperty = $identifierProperty; |
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} |
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/** |
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* @param string $class The class to recognise. |
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* @param string|null $identifierProperty The property to get the id from. |
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* @return DefinesEntityType The new entity type definition. |
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* @throws \ReflectionException When the property is inaccessible. |
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*/ |
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public static function whenEncountering( |
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string $class, |
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string $identifierProperty = null |
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): DefinesEntityType { |
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if (null === $identifierProperty) { |
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return new self($class, null); |
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} |
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$property = new ReflectionProperty($class, $identifierProperty); |
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$property->setAccessible(true); |
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return new self($class, $property); |
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} |
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/** @inheritdoc */ |
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public function recognises(object $potentialEntity): bool |
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{ |
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return $potentialEntity instanceof $this->class; |
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} |
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/** @inheritdoc */ |
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public function idFor(object $recognisedEntity): ?string |
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{ |
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if (null === $this->identifierProperty) { |
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return null; |
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} |
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return $this->identifierProperty->getValue($recognisedEntity); |
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} |
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} |
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Stratadox /
EntityState
