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<?php declare(strict_types=1); |
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/** |
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* ownCloud - Music app |
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* |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. See the COPYING file. |
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* |
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* @author Pauli Järvinen <[email protected]> |
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* @copyright Pauli Järvinen 2017 - 2020 |
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*/ |
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namespace OCA\Music\Db; |
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use OCP\IDBConnection; |
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use \Doctrine\DBAL\Exception\UniqueConstraintViolationException; |
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class Cache { |
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private $db; |
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public function __construct(IDBConnection $db) { |
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$this->db = $db; |
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} |
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/** |
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* @param string $userId |
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* @param string $key |
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* @param string $data |
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*/ |
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public function add(string $userId, string $key, string $data) : void { |
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$sql = 'INSERT INTO `*PREFIX*music_cache` |
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(`user_id`, `key`, `data`) VALUES (?, ?, ?)'; |
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$this->db->executeUpdate($sql, [$userId, $key, $data]); |
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} |
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/** |
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* @param string $userId |
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* @param string $key |
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* @param string $data |
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*/ |
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public function update(string $userId, string $key, string $data) : void { |
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$sql = 'UPDATE `*PREFIX*music_cache` SET `data` = ? |
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WHERE `user_id` = ? AND `key` = ?'; |
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$this->db->executeUpdate($sql, [$data, $userId, $key]); |
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} |
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/** |
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* @param string $userId |
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* @param string $key |
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* @param string $data |
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*/ |
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public function set(string $userId, string $key, string $data) : void { |
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try { |
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$this->add($userId, $key, $data); |
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} catch (UniqueConstraintViolationException $e) { |
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$this->update($userId, $key, $data); |
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} |
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} |
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/** |
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* Remove one or several key-value pairs |
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* |
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* @param string $userId User to target, omit to target all users |
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* @param string $key Key to target, omit to target all keys |
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*/ |
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public function remove(string $userId = null, string $key = null) : void { |
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$sql = 'DELETE FROM `*PREFIX*music_cache`'; |
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$params = []; |
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if ($userId !== null) { |
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$sql .= ' WHERE `user_id` = ?'; |
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$params[] = $userId; |
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if ($key !== null) { |
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$sql .= ' AND `key` = ?'; |
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$params[] = $key; |
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} |
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} elseif ($key !== null) { |
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$sql .= ' WHERE `key` = ?'; |
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$params[] = $key; |
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} |
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$this->db->executeUpdate($sql, $params); |
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} |
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/** |
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* @param string $userId |
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* @param string $key |
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* @return string|null |
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*/ |
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public function get(string $userId, string $key) : ?string { |
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$sql = 'SELECT `data` FROM `*PREFIX*music_cache` |
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WHERE `user_id` = ? AND `key` = ?'; |
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$result = $this->db->executeQuery($sql, [$userId, $key]); |
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$rows = $result->fetchAll(); |
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$result->closeCursor(); |
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return \count($rows) ? $rows[0]['data'] : null; |
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} |
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/** |
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* Get all key-value pairs of one user, optionally limitting to keys with a given prefix. |
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* @param string $userId |
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* @param string|null $prefix |
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* @return array of arrays with keys 'key', 'data' |
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*/ |
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public function getAll(string $userId, string $prefix = null) : array { |
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$sql = 'SELECT `key`, `data` FROM `*PREFIX*music_cache` |
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WHERE `user_id` = ?'; |
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$params = [$userId]; |
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if (!empty($prefix)) { |
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$sql .= ' AND `key` LIKE ?'; |
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$params[] = $prefix . '%'; |
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} |
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$result = $this->db->executeQuery($sql, $params); |
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$rows = $result->fetchAll(); |
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$result->closeCursor(); |
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return $rows; |
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} |
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/** |
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* Given a cache key and its exact content, return the owning user |
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*/ |
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public function getOwner(string $key, string $data) : ?string { |
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$sql = 'SELECT `user_id` FROM `*PREFIX*music_cache` |
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WHERE `key` = ? AND `data` = ?'; |
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$result = $this->db->executeQuery($sql, [$key, $data]); |
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$rows = $result->fetchAll(); |
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$result->closeCursor(); |
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return \count($rows) ? $rows[0]['user_id'] : null; |
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} |
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} |
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owncloud /
music
