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<?php |
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namespace Wikibase\DataModel\Entity; |
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use ArrayIterator; |
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use Countable; |
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use InvalidArgumentException; |
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use IteratorAggregate; |
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/** |
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* Immutable set of ItemId objects. Unordered and unique. |
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* The constructor filters out duplicates. |
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* |
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* @since 0.7.4 |
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* |
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* @license GPL-2.0-or-later |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class ItemIdSet implements IteratorAggregate, Countable { |
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/** |
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* @var ItemId[] |
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*/ |
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private $ids = []; |
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/** |
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* @param ItemId[] $ids |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct( array $ids = [] ) { |
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foreach ( $ids as $id ) { |
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if ( !( $id instanceof ItemId ) ) { |
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throw new InvalidArgumentException( 'Every element in $ids must be an instance of ItemId' ); |
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} |
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$this->ids[$id->getNumericId()] = $id; |
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} |
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} |
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/** |
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* @see Countable::count |
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* |
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* @return int |
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*/ |
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public function count() { |
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return count( $this->ids ); |
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} |
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2 |
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/** |
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* @see IteratorAggregate::getIterator |
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* |
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* @return Iterator|ItemId[] |
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*/ |
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public function getIterator() { |
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return new ArrayIterator( $this->ids ); |
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} |
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/** |
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* @since 2.5 |
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* |
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* @return string[] |
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*/ |
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public function getSerializations() { |
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return array_values( |
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array_map( |
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function( ItemId $id ) { |
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return $id->getSerialization(); |
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}, |
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$this->ids |
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) |
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); |
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} |
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/** |
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* @param ItemId $id |
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* |
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* @return bool |
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*/ |
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public function has( ItemId $id ) { |
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return array_key_exists( $id->getNumericId(), $this->ids ); |
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} |
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2 |
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/** |
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* @see Countable::equals |
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* |
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* @since 0.1 |
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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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&& $this->ids == $target->ids; |
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} |
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7 |
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} |
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wmde /
WikibaseDataModel
