includes/specials/SpecialLonelypages.php

   1 <?php
   2 /**
   3  * Implements Special:Lonelypaages
   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 SpecialPage
  22  */
  23
  24 /**
  25  * A special page looking for articles with no article linking to them,
  26  * thus being lonely.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class LonelyPagesPage extends PageQueryPage {
  31
  32         function getName() {
  33                 return "Lonelypages";
  34         }
  35         function getPageHeader() {
  36                 return wfMsgExt( 'lonelypagestext', array( 'parse' ) );
  37         }
  38
  39         function sortDescending() {
  40                 return false;
  41         }
  42
  43         function isExpensive() {
  44                 return true;
  45         }
  46         function isSyndicated() { return false; }
  47
  48         function getSQL() {
  49                 $dbr = wfGetDB( DB_SLAVE );
  50                 list( $page, $pagelinks, $templatelinks ) = $dbr->tableNamesN( 'page', 'pagelinks', 'templatelinks' );
  51
  52                 return
  53                   "SELECT 'Lonelypages'  AS type,
  54                           page_namespace AS namespace,
  55                           page_title     AS title,
  56                           page_title     AS value
  57                      FROM $page
  58                 LEFT JOIN $pagelinks
  59                        ON page_namespace=pl_namespace AND page_title=pl_title
  60                 LEFT JOIN $templatelinks
  61                                 ON page_namespace=tl_namespace AND page_title=tl_title
  62                     WHERE pl_namespace IS NULL
  63                       AND page_namespace=".NS_MAIN."
  64                       AND page_is_redirect=0
  65                           AND tl_namespace IS NULL";
  66
  67         }
  68 }
  69
  70 /**
  71  * Constructor
  72  */
  73 function wfSpecialLonelypages() {
  74         list( $limit, $offset ) = wfCheckLimits();
  75
  76         $lpp = new LonelyPagesPage();
  77
  78         return $lpp->doQuery( $offset, $limit );
  79 }