78 lines
2.6 KiB
PHP
78 lines
2.6 KiB
PHP
<?php
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/**
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Repair;
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use OC\Hooks\BasicEmitter;
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class SearchLuceneTables extends BasicEmitter implements \OC\RepairStep {
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public function getName() {
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return 'Repair duplicate entries in oc_lucene_status';
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}
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/**
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* Fix duplicate entries in oc_lucene_status
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*
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* search_lucene prior to v0.5.0 did not have a primary key on the lucene_status table. Newer versions do, which
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* causes the migration check to fail because it tries to insert duplicate rows into the new schema.
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*
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* FIXME Currently, apps don't have a way of repairing anything before the migration check:
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* @link https://github.com/owncloud/core/issues/10980
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*
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* As a result this repair step needs to live in the core repo, although it belongs into search_lucene:
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* @link https://github.com/owncloud/core/issues/10205#issuecomment-54957557
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*
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* It will completely remove any rows that make a file id have more than one status:
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* fileid | status fileid | status
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* --------+-------- will become --------+--------
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* 2 | E 3 | E
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* 2 | I
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* 3 | E
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*
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* search_lucene will then reindex the fileids without a status when the next indexing job is executed
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*/
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public function run() {
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if (\OC_DB::tableExists('lucene_status')) {
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$this->emit('\OC\Repair', 'info', array('removing duplicate entries from lucene_status'));
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$connection = \OC_DB::getConnection();
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$query = $connection->prepare('
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DELETE FROM `*PREFIX*lucene_status`
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WHERE `fileid` IN (
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SELECT `fileid`
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FROM (
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SELECT `fileid`
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FROM `*PREFIX*lucene_status`
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GROUP BY `fileid`
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HAVING count(`fileid`) > 1
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) AS `mysqlerr1093hack`
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)');
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$query->execute();
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} else {
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$this->emit('\OC\Repair', 'info', array('lucene_status table does not exist -> nothing to do'));
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}
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}
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}
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