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<?php
/**
* 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
*
* @file
* @ingroup RevisionDelete
*/
/**
* Abstract base class for deletable items
*/
abstract class RevDelItem extends RevisionItemBase {
/**
* Returns true if the item is "current", and the operation to set the given
* bits can't be executed for that reason
* STUB
* @param int $newBits
* @return bool
*/
public function isHideCurrentOp( $newBits ) {
return false;
}
/**
* Get the current deletion bitfield value
*
* @return int
*/
abstract public function getBits();
/**
* Set the visibility of the item. This should do any necessary DB queries.
*
* The DB update query should have a condition which forces it to only update
* if the value in the DB matches the value fetched earlier with the SELECT.
* If the update fails because it did not match, the function should return
* false. This prevents concurrency problems.
*
* @param int $newBits
* @return bool Success
*/
abstract public function setBits( $newBits );
/**
* Get the return information about the revision for the API
* @since 1.23
* @param ApiResult $result
* @return array Data for the API result
*/
abstract public function getApiData( ApiResult $result );
/**
* Lock the item against changes outside of the DB
* @return Status
* @since 1.28
*/
public function lock() {
return Status::newGood();
}
/**
* Unlock the item against changes outside of the DB
* @return Status
* @since 1.28
*/
public function unlock() {
return Status::newGood();
}
}
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