includes/api/ApiQueryCategoryInfo.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on May 13, 2007
   6  *
   7  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * This query adds the "<categories>" subelement to all pages with the list of
  29  * categories the page is in.
  30  *
  31  * @ingroup API
  32  */
  33 class ApiQueryCategoryInfo extends ApiQueryBase {
  34
  35         public function __construct( ApiQuery $query, $moduleName ) {
  36                 parent::__construct( $query, $moduleName, 'ci' );
  37         }
  38
  39         public function execute() {
  40                 $params = $this->extractRequestParams();
  41                 $alltitles = $this->getPageSet()->getAllTitlesByNamespace();
  42                 if ( empty( $alltitles[NS_CATEGORY] ) ) {
  43                         return;
  44                 }
  45                 $categories = $alltitles[NS_CATEGORY];
  46
  47                 $titles = $this->getPageSet()->getGoodTitles() +
  48                         $this->getPageSet()->getMissingTitles();
  49                 $cattitles = array();
  50                 foreach ( $categories as $c ) {
  51                         /** @var $t Title */
  52                         $t = $titles[$c];
  53                         $cattitles[$c] = $t->getDBkey();
  54                 }
  55
  56                 $this->addTables( array( 'category', 'page', 'page_props' ) );
  57                 $this->addJoinConds( array(
  58                         'page' => array( 'LEFT JOIN', array(
  59                                 'page_namespace' => NS_CATEGORY,
  60                                 'page_title=cat_title' ) ),
  61                         'page_props' => array( 'LEFT JOIN', array(
  62                                 'pp_page=page_id',
  63                                 'pp_propname' => 'hiddencat' ) ),
  64                 ) );
  65
  66                 $this->addFields( array(
  67                         'cat_title',
  68                         'cat_pages',
  69                         'cat_subcats',
  70                         'cat_files',
  71                         'cat_hidden' => 'pp_propname'
  72                 ) );
  73                 $this->addWhere( array( 'cat_title' => $cattitles ) );
  74
  75                 if ( !is_null( $params['continue'] ) ) {
  76                         $title = $this->getDB()->addQuotes( $params['continue'] );
  77                         $this->addWhere( "cat_title >= $title" );
  78                 }
  79                 $this->addOption( 'ORDER BY', 'cat_title' );
  80
  81                 $res = $this->select( __METHOD__ );
  82
  83                 $catids = array_flip( $cattitles );
  84                 foreach ( $res as $row ) {
  85                         $vals = array();
  86                         $vals['size'] = intval( $row->cat_pages );
  87                         $vals['pages'] = $row->cat_pages - $row->cat_subcats - $row->cat_files;
  88                         $vals['files'] = intval( $row->cat_files );
  89                         $vals['subcats'] = intval( $row->cat_subcats );
  90                         if ( $row->cat_hidden ) {
  91                                 $vals['hidden'] = '';
  92                         }
  93                         $fit = $this->addPageSubItems( $catids[$row->cat_title], $vals );
  94                         if ( !$fit ) {
  95                                 $this->setContinueEnumParameter( 'continue', $row->cat_title );
  96                                 break;
  97                         }
  98                 }
  99         }
 100
 101         public function getCacheMode( $params ) {
 102                 return 'public';
 103         }
 104
 105         public function getAllowedParams() {
 106                 return array(
 107                         'continue' => null,
 108                 );
 109         }
 110
 111         public function getParamDescription() {
 112                 return array(
 113                         'continue' => 'When more results are available, use this to continue',
 114                 );
 115         }
 116
 117         public function getDescription() {
 118                 return 'Returns information about the given categories.';
 119         }
 120
 121         public function getExamples() {
 122                 return 'api.php?action=query&prop=categoryinfo&titles=Category:Foo|Category:Bar';
 123         }
 124
 125         public function getHelpUrls() {
 126                 return 'https://www.mediawiki.org/wiki/API:Properties#categoryinfo_.2F_ci';
 127         }
 128 }