wikimedia/mediawiki-extensions-Wikibase

<?php

declare( strict_types = 1 );
namespace Wikibase\Lib\Store;

use Wikibase\DataModel\Entity\EntityId;

/**
 * @license GPL-2.0-or-later
 */
interface EntityExistenceChecker {

    /**
     * This exists check returns true, iff an entity has both been created and not deleted,
     * i.e. deleted entities do not exist.
     *
     * @param EntityId $id
     *
     * @return bool
     */
    public function exists( EntityId $id ): bool;

    /**
     * Checks if a batch of entities exists at once.
     *
     * This is equivalent to iterating over $ids and calling {@link exists()} for each,
     * but may be more efficient, depending on implementation.
     *
     * @param EntityId[] $ids
     * @return bool[] Mapping from {@link SerializableEntityId::getSerialization() entity ID serialization}
     * to {@link exists()} result.
     */
    public function existsBatch( array $ids ): array;

}