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<?php |
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/** |
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* File was created 14.05.2016 22:32 |
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*/ |
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namespace PeekAndPoke\Component\Slumber\Annotation\Slumber; |
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use Doctrine\Common\Annotations\Annotation; |
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use PeekAndPoke\Component\Creator\CreatePolymorphic; |
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use PeekAndPoke\Component\Creator\CreatorFactory; |
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use PeekAndPoke\Component\Creator\NullCreator; |
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use PeekAndPoke\Component\Slumber\Annotation\ClassCreatorMarker; |
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use PeekAndPoke\Component\Slumber\Annotation\SlumberAnnotation; |
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use PeekAndPoke\Component\Slumber\Core\Exception\SlumberException; |
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use PeekAndPoke\Component\Slumber\Core\Validation\ValidationContext; |
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/** |
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* @Annotation |
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* @Annotation\Target("CLASS") |
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* |
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* @author Karsten J. Gerber <[email protected]> |
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*/ |
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class Polymorphic extends SlumberAnnotation implements ClassCreatorMarker |
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{ |
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public const DEFAULT_TELL_BY = 'type'; |
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/** |
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* The data field to look at in order to tell which kind of object to instantiate |
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* |
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* @var string |
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* |
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* @Annotation\Attribute(required=false) |
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*/ |
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public $tellBy = self::DEFAULT_TELL_BY; |
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/** |
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* The default type to use, when no nothing was found in the mapping. |
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* |
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* Can be left empty, then "null" will be result for a type that could not be mapped. |
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* |
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* @var string |
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* |
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* @Annotation\Attribute(required=false) |
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*/ |
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public $default; |
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/** |
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* Initialize the annotation and validate the given parameters |
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* |
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* @param ValidationContext $context |
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* |
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* @throws SlumberException |
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*/ |
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public function validate(ValidationContext $context) |
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{ |
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$mapping = $this->getMapping(); |
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if (! \is_array($mapping)) { |
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throw $this->createValidationException($context, 'The type-mapping is missing'); |
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} |
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foreach ($mapping as $k => $v) { |
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if (! class_exists($v)) { |
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throw $this->createValidationException( |
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$context, |
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'The class "' . $v . '" for "' . $k . '"does not exist' |
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); |
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} |
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} |
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if (! empty($this->default) && ! class_exists($this->default)) { |
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throw $this->createValidationException( |
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$context, |
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'The class "' . $this->default . ' for the default does not exist' |
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); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getTellBy() |
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{ |
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return $this->tellBy ?: self::DEFAULT_TELL_BY; |
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} |
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/** |
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* @return array |
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*/ |
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public function getMapping() |
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{ |
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return (array) $this->value; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getCreator(CreatorFactory $factory) |
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{ |
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$mapping = []; |
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foreach ($this->getMapping() as $k => $v) { |
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$mapping[$k] = $factory->create(new \ReflectionClass($v)); |
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} |
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return new CreatePolymorphic( |
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$mapping, |
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$this->getTellBy(), |
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! empty($this->default) ? $factory->create(new \ReflectionClass($this->default)) : new NullCreator() |
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); |
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} |
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} |
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