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<?php |
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/** |
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* Copyright (c) 2014 Jörn Friedrich Dreyer <jfd@owncloud.com> |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. |
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* See the COPYING-README file. |
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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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