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<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OC\Tagging;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\AppFramework\Db\QBMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
/**
* Mapper for Tag entity
*
* @template-extends QBMapper<Tag>
*/
class TagMapper extends QBMapper {
/**
* Constructor.
*
* @param IDBConnection $db Instance of the Db abstraction layer.
*/
public function __construct(IDBConnection $db) {
parent::__construct($db, 'vcategory', Tag::class);
}
/**
* Load tags from the database.
*
* @param array $owners The user(s) whose tags we are going to load.
* @param string $type The type of item for which we are loading tags.
* @return array An array of Tag objects.
*/
public function loadTags(array $owners, string $type): array {
$qb = $this->db->getQueryBuilder();
$qb->select(['id', 'uid', 'type', 'category'])
->from($this->getTableName())
->where($qb->expr()->in('uid', $qb->createNamedParameter($owners, IQueryBuilder::PARAM_STR_ARRAY)))
->andWhere($qb->expr()->eq('type', $qb->createNamedParameter($type, IQueryBuilder::PARAM_STR)))
->orderBy('category');
return $this->findEntities($qb);
}
/**
* Check if a given Tag object already exists in the database.
*
* @param Tag $tag The tag to look for in the database.
*/
public function tagExists(Tag $tag): bool {
$qb = $this->db->getQueryBuilder();
$qb->select(['id', 'uid', 'type', 'category'])
->from($this->getTableName())
->where($qb->expr()->eq('uid', $qb->createNamedParameter($tag->getOwner(), IQueryBuilder::PARAM_STR)))
->andWhere($qb->expr()->eq('type', $qb->createNamedParameter($tag->getType(), IQueryBuilder::PARAM_STR)))
->andWhere($qb->expr()->eq('category', $qb->createNamedParameter($tag->getName(), IQueryBuilder::PARAM_STR)));
try {
$this->findEntity($qb);
} catch (DoesNotExistException $e) {
return false;
}
return true;
}
}
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