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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @author Bernhard Reiter <ockham@raz.or.at>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
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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