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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\Exceptions\DeserializationException; |
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use Deserializers\Exceptions\InvalidAttributeException; |
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use Deserializers\Exceptions\MissingAttributeException; |
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use Wikibase\DataModel\Entity\ItemId; |
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use Wikibase\DataModel\SiteLink; |
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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 SiteLinkDeserializer implements Deserializer { |
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/** |
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* @var Deserializer |
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*/ |
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private $entityIdDeserializer; |
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/** |
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* @param Deserializer $entityIdDeserializer |
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*/ |
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public function __construct( Deserializer $entityIdDeserializer ) { |
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$this->entityIdDeserializer = $entityIdDeserializer; |
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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 SiteLink |
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*/ |
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public function deserialize( $serialization ) { |
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$this->assertCanDeserialize( $serialization ); |
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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 SiteLink |
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*/ |
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private function getDeserialized( array $serialization ) { |
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return new SiteLink( |
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$serialization['site'], |
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$serialization['title'], |
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$this->getDeserializeBadges( $serialization ) |
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); |
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} |
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private function getDeserializeBadges( array $serialization ) { |
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if ( !array_key_exists( 'badges', $serialization ) ) { |
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return array(); |
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} |
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$this->assertBadgesIsArray( $serialization ); |
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$badges = array(); |
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foreach ( $serialization['badges'] as $badgeSerialization ) { |
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$badges[] = $this->deserializeItemId( $badgeSerialization ); |
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} |
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return $badges; |
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} |
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private function deserializeItemId( $serialization ) { |
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$itemId = $this->entityIdDeserializer->deserialize( $serialization ); |
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if ( !( $itemId instanceof ItemId ) ) { |
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throw new InvalidAttributeException( |
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'badges', |
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$serialization, |
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"'$serialization' is not a valid item ID" |
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); |
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} |
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return $itemId; |
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} |
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private function assertBadgesIsArray( $serialization ) { |
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if ( !is_array( $serialization['badges'] ) ) { |
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throw new InvalidAttributeException( |
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'badges', |
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$serialization['badges'], |
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"badges attribute is not a valid array" |
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); |
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} |
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} |
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private function assertCanDeserialize( $serialization ) { |
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$this->requireAttribute( $serialization, 'site' ); |
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$this->requireAttribute( $serialization, 'title' ); |
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} |
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private function requireAttribute( $serialization, $attribute ) { |
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if ( !is_array( $serialization ) || !array_key_exists( $attribute, $serialization ) ) { |
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throw new MissingAttributeException( $attribute ); |
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} |
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} |
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} |
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