memories/lib/Migration/Version400503Date2022110103...

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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Varun Patil <radialapps@gmail.com>
* @author Varun Patil <radialapps@gmail.com>
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OCA\Memories\Migration;
use OCP\DB\ISchemaWrapper;
use OCP\IDBConnection;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;
/**
* Auto-generated migration step: Please modify to your needs!
*/
class Version400503Date20221101033144 extends SimpleMigrationStep
{
/** @var IDBConnection */
private $dbc;
public function __construct(IDBConnection $dbc)
{
$this->dbc = $dbc;
}
/**
* @param \Closure(): ISchemaWrapper $schemaClosure
*/
public function preSchemaChange(IOutput $output, \Closure $schemaClosure, array $options): void {}
/**
* @param \Closure(): ISchemaWrapper $schemaClosure
*/
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public function changeSchema(IOutput $output, \Closure $schemaClosure, array $options): ?ISchemaWrapper
{
/** @var ISchemaWrapper $schema */
$schema = $schemaClosure();
$table = $schema->getTable('memories');
// This is a hack to speed up the tags queries.
// The problem is objectid in systemtags is VARCHAR(64) while fileid in
// filecache and memories is BIGINT(20), so a join is extremely slow,
// because the entire tags table must be scanned for the conversion.
if (!$table->hasColumn('objectid')) {
$table->addColumn('objectid', 'string', [
'notnull' => true,
'length' => 64,
'default' => '0', // set to real value in postSchemaChange
]);
}
if (!$table->hasIndex('memories_objectid_index')) {
$table->addIndex(['objectid'], 'memories_objectid_index');
}
return $schema;
}
/**
* @param \Closure(): ISchemaWrapper $schemaClosure
*/
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public function postSchemaChange(IOutput $output, \Closure $schemaClosure, array $options): void
{
// Update oc_memories to set objectid equal to fileid for all rows
$this->dbc->executeQuery('UPDATE *PREFIX*memories SET objectid = CAST(fileid AS CHAR(64))');
}
}