includes/api/ApiQueryCategoryInfo.php

   1 <?php
   2
   3 /**
   4  * Created on May 13, 2007
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if ( !defined( 'MEDIAWIKI' ) ) {
  27         // Eclipse helper - will be ignored in production
  28         require_once( "ApiQueryBase.php" );
  29 }
  30
  31 /**
  32  * This query adds the <categories> subelement to all pages with the list of categories the page is in
  33  *
  34  * @ingroup API
  35  */
  36 class ApiQueryCategoryInfo extends ApiQueryBase {
  37
  38         public function __construct( $query, $moduleName ) {
  39                 parent::__construct( $query, $moduleName, 'ci' );
  40         }
  41
  42         public function execute() {
  43                 $params = $this->extractRequestParams();
  44                 $alltitles = $this->getPageSet()->getAllTitlesByNamespace();
  45                 if ( empty( $alltitles[NS_CATEGORY] ) ) {
  46                         return;
  47                 }
  48                 $categories = $alltitles[NS_CATEGORY];
  49
  50                 $titles = $this->getPageSet()->getGoodTitles() +
  51                                         $this->getPageSet()->getMissingTitles();
  52                 $cattitles = array();
  53                 foreach ( $categories as $c ) {
  54                         $t = $titles[$c];
  55                         $cattitles[$c] = $t->getDBkey();
  56                 }
  57
  58                 $this->addTables( array( 'category', 'page', 'page_props' ) );
  59                 $this->addJoinConds( array(
  60                         'page' => array( 'LEFT JOIN', array(
  61                                 'page_namespace' => NS_CATEGORY,
  62                                 'page_title=cat_title' ) ),
  63                         'page_props' => array( 'LEFT JOIN', array(
  64                                 'pp_page=page_id',
  65                                 'pp_propname' => 'hiddencat' ) ),
  66                 ) );
  67
  68                 $this->addFields( array( 'cat_title', 'cat_pages', 'cat_subcats', 'cat_files', 'pp_propname AS cat_hidden' ) );
  69                 $this->addWhere( array( 'cat_title' => $cattitles ) );
  70
  71                 if ( !is_null( $params['continue'] ) ) {
  72                         $title = $this->getDB()->addQuotes( $params['continue'] );
  73                         $this->addWhere( "cat_title >= $title" );
  74                 }
  75                 $this->addOption( 'ORDER BY', 'cat_title' );
  76
  77                 $db = $this->getDB();
  78                 $res = $this->select( __METHOD__ );
  79
  80                 $catids = array_flip( $cattitles );
  81                 while ( $row = $db->fetchObject( $res ) ) {
  82                         $vals = array();
  83                         $vals['size'] = intval( $row->cat_pages );
  84                         $vals['pages'] = $row->cat_pages - $row->cat_subcats - $row->cat_files;
  85                         $vals['files'] = intval( $row->cat_files );
  86                         $vals['subcats'] = intval( $row->cat_subcats );
  87                         if ( $row->cat_hidden ) {
  88                                 $vals['hidden'] = '';
  89                         }
  90                         $fit = $this->addPageSubItems( $catids[$row->cat_title], $vals );
  91                         if ( !$fit ) {
  92                                 $this->setContinueEnumParameter( 'continue', $row->cat_title );
  93                                 break;
  94                         }
  95                 }
  96         }
  97
  98         public function getAllowedParams() {
  99                 return array(
 100                         'continue' => null,
 101                 );
 102         }
 103
 104         public function getParamDescription() {
 105                 return array(
 106                         'continue' => 'When more results are available, use this to continue',
 107                 );
 108         }
 109
 110         public function getDescription() {
 111                 return 'Returns information about the given categories';
 112         }
 113
 114         protected function getExamples() {
 115                 return 'api.php?action=query&prop=categoryinfo&titles=Category:Foo|Category:Bar';
 116         }
 117
 118         public function getVersion() {
 119                 return __CLASS__ . ': $Id$';
 120         }
 121 }