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<?php
/**
* Interface for generating updates to single rows in the database.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @stable to implement
*
* @file
* @ingroup Maintenance
*/
interface RowUpdateGenerator {
/**
* Given a database row, generates an array mapping column names to
* updated value within the database row.
*
* Sample Response:
* return [
* 'some_col' => 'new value',
* 'other_col' => 99,
* ];
*
* @param stdClass $row A row from the database
* @return array Map of column names to updated value within the
* database row. When no update is required returns an empty array.
*/
public function update( $row );
}
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