nextcloud/lib/private/TagManager.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Bernhard Reiter <ockham@raz.or.at>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
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* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Vincent Petry <vincent@nextcloud.com>
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*
* @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/>
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*
*/
/**
* Factory class creating instances of \OCP\ITags
*
* A tag can be e.g. 'Family', 'Work', 'Chore', 'Special Occation' or
* anything else that is either parsed from a vobject or that the user chooses
* to add.
* Tag names are not case-sensitive, but will be saved with the case they
* are entered in. If a user already has a tag 'family' for a type, and
* tries to add a tag named 'Family' it will be silently ignored.
*/
namespace OC;
use OC\Tagging\TagMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\ITagManager;
use OCP\ITags;
use OCP\IUserSession;
class TagManager implements ITagManager {
/** @var TagMapper */
private $mapper;
/** @var IUserSession */
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private $userSession;
/** @var IDBConnection */
private $connection;
public function __construct(TagMapper $mapper, IUserSession $userSession, IDBConnection $connection) {
$this->mapper = $mapper;
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$this->userSession = $userSession;
$this->connection = $connection;
}
/**
* Create a new \OCP\ITags instance and load tags from db.
*
* @see \OCP\ITags
* @param string $type The type identifier e.g. 'contact' or 'event'.
* @param array $defaultTags An array of default tags to be used if none are stored.
* @param boolean $includeShared Whether to include tags for items shared with this user by others.
* @param string $userId user for which to retrieve the tags, defaults to the currently
* logged in user
* @return \OCP\ITags
*
* since 20.0.0 $includeShared isn't used anymore
*/
public function load($type, $defaultTags = [], $includeShared = false, $userId = null) {
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if (is_null($userId)) {
$user = $this->userSession->getUser();
if ($user === null) {
// nothing we can do without a user
return null;
}
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$userId = $this->userSession->getUser()->getUId();
}
return new Tags($this->mapper, $userId, $type, $defaultTags);
}
/**
* Get all users who favorited an object
*
* @param string $objectType
* @param int $objectId
* @return array
*/
public function getUsersFavoritingObject(string $objectType, int $objectId): array {
$query = $this->connection->getQueryBuilder();
$query->select('uid')
->from('vcategory_to_object', 'o')
->innerJoin('o', 'vcategory', 'c', $query->expr()->eq('o.categoryid', 'c.id'))
->where($query->expr()->eq('objid', $query->createNamedParameter($objectId, IQueryBuilder::PARAM_INT)))
->andWhere($query->expr()->eq('c.type', $query->createNamedParameter($objectType)))
->andWhere($query->expr()->eq('c.category', $query->createNamedParameter(ITags::TAG_FAVORITE)));
$result = $query->execute();
$users = $result->fetchAll(\PDO::FETCH_COLUMN);
$result->closeCursor();
return $users;
}
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}