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<?php |
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namespace Wikibase\DataModel\Deserializers; |
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use Deserializers\Deserializer; |
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use Deserializers\DispatchableDeserializer; |
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use Deserializers\Exceptions\DeserializationException; |
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use Deserializers\Exceptions\InvalidAttributeException; |
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use Wikibase\DataModel\Reference; |
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use Wikibase\DataModel\Snak\SnakList; |
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/** |
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* Package private |
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* |
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* @license GPL-2.0+ |
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* @author Thomas Pellissier Tanon |
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*/ |
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class ReferenceDeserializer implements DispatchableDeserializer { |
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/** |
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* @var Deserializer |
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*/ |
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private $snaksDeserializer; |
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/** |
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* @param Deserializer $snaksDeserializer |
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*/ |
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public function __construct( Deserializer $snaksDeserializer ) { |
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$this->snaksDeserializer = $snaksDeserializer; |
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} |
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/** |
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* @see Deserializer::isDeserializerFor |
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* |
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* @param mixed $serialization |
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* |
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* @return bool |
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*/ |
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public function isDeserializerFor( $serialization ) { |
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return $this->isValidSerialization( $serialization ); |
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} |
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private function isValidSerialization( $serialization ) { |
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return is_array( $serialization ) && array_key_exists( 'snaks', $serialization ); |
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} |
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/** |
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* @see Deserializer::deserialize |
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* |
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* @param array $serialization |
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* |
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* @throws DeserializationException |
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* @return Reference |
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*/ |
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public function deserialize( $serialization ) { |
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if ( !$this->isValidSerialization( $serialization ) ) { |
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throw new DeserializationException( 'The serialization is invalid' ); |
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} |
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return $this->getDeserialized( $serialization ); |
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} |
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/** |
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* @param array $serialization |
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* |
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* @return Reference |
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*/ |
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private function getDeserialized( array $serialization ) { |
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return new Reference( |
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$this->deserializeSnaks( $serialization ) |
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); |
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} |
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/** |
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* @param array $serialization |
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* |
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* @return SnakList |
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*/ |
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private function deserializeSnaks( array $serialization ) { |
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$snaks = $this->snaksDeserializer->deserialize( $serialization['snaks'] ); |
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if ( array_key_exists( 'snaks-order', $serialization ) ) { |
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$this->assertSnaksOrderIsArray( $serialization ); |
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$snaks->orderByProperty( $serialization['snaks-order'] ); |
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} |
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return $snaks; |
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} |
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private function assertSnaksOrderIsArray( array $serialization ) { |
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if ( !is_array( $serialization['snaks-order'] ) ) { |
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throw new InvalidAttributeException( |
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'snaks-order', |
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$serialization['snaks-order'], |
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"snaks-order attribute is not a valid array" |
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); |
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} |
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} |
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} |
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