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<?php |
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namespace Wikibase\DataModel\Entity; |
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use Comparable; |
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use Serializable; |
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/** |
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* @since 0.5 |
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* Constructor non-public since 1.0 |
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* Abstract since 2.0 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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abstract class EntityId implements Comparable, Serializable { |
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protected $serialization; |
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/** |
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* @param $serialization |
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*/ |
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protected function __construct( $serialization ) { |
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$this->serialization = $serialization; |
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} |
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/** |
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* @return string |
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*/ |
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public abstract function getEntityType(); |
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/** |
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* @return string |
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*/ |
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public function getSerialization() { |
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return $this->serialization; |
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} |
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/** |
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* Returns an array with 3 elements: the foreign repository name as the first element, the local ID as the last |
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* element and everything that is in between as the second element. |
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* |
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* @param $serialization |
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* @return array |
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*/ |
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public static function splitSerialization( $serialization ) { |
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$parts = explode( ':', $serialization ); |
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$localPart = array_pop( $parts ); |
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$repoName = array_shift( $parts ) ?: ''; |
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$prefixRemainder = implode( ':', $parts ); |
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return array( $repoName, $prefixRemainder, $localPart ); |
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} |
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/** |
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* Concatenates parts of an EntityId serialization with ':'. |
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* |
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* @param array $parts |
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* @return string |
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*/ |
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public static function joinSerialization( $parts ) { |
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return implode( ':', array_filter( $parts ) ); |
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} |
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/** |
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* Returns the foreign repository name or empty string for local entities. |
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* @return string |
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*/ |
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public function getRepoName() { |
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$parts = self::splitSerialization( $this->serialization ); |
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return $parts[0]; |
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} |
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/** |
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* @return string |
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*/ |
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public function getLocalPart() { |
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$parts = self::splitSerialization( $this->serialization ); |
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return self::joinSerialization( array( '', $parts[1], $parts[2] ) ); |
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} |
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/** |
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* @return bool |
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*/ |
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public function isForeign() { |
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return strpos( $this->serialization, ':' ) > 0; |
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} |
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protected static function normalizeIdSerialization( $id ) { |
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$parts = self::splitSerialization( ltrim( $id, ':' ) ); |
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return self::joinSerialization( array( |
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$parts[0], |
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$parts[1], |
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strtoupper( $parts[2] ) |
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) ); |
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} |
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/** |
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* This is a human readable representation of the EntityId. |
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* This format is allowed to change and should therefore not |
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* be relied upon to be stable. |
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* |
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* @return string |
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*/ |
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public function __toString() { |
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return $this->serialization; |
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} |
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/** |
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* @see Comparable::equals |
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* |
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* @since 0.5 |
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* |
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* @param mixed $target |
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* |
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* @return bool |
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*/ |
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public function equals( $target ) { |
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if ( $this === $target ) { |
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return true; |
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} |
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return $target instanceof self |
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&& $target->serialization === $this->serialization; |
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} |
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} |
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