includes/dao/IDBAccessObject.php

   1 <?php
   2 /**
   3  * This file contains database access object related constants.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Database
  22  */
  23
  24 /**
  25  * Interface for database access objects
  26  */
  27 interface IDBAccessObject {
  28         const LATEST_READ  = 1; // read from the master
  29         const FOR_UPDATE   = 2; // lock the rows read
  30         const LOCKING_READ = 3; // LATEST_READ | FOR_UPDATE
  31         const AVOID_MASTER = 4; // avoiding checking the master
  32 }