includes/api/ApiQueryWatchlist.php

   1 <?php
   2
   3 /*
   4  * Created on Sep 25, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 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 action allows clients to retrieve a list of recently modified pages
  33  * that are part of the logged-in user's watchlist.
  34  *
  35  * @addtogroup API
  36  */
  37 class ApiQueryWatchlist extends ApiQueryGeneratorBase {
  38
  39         public function __construct($query, $moduleName) {
  40                 parent :: __construct($query, $moduleName, 'wl');
  41         }
  42
  43         public function execute() {
  44                 $this->run();
  45         }
  46
  47         public function executeGenerator($resultPageSet) {
  48                 $this->run($resultPageSet);
  49         }
  50
  51         private $fld_ids = false, $fld_title = false, $fld_patrol = false, $fld_flags = false,
  52                         $fld_timestamp = false, $fld_user = false, $fld_comment = false;
  53
  54         private function run($resultPageSet = null) {
  55                 global $wgUser, $wgDBtype;
  56
  57                 $this->selectNamedDB('watchlist', DB_SLAVE, 'watchlist');
  58
  59                 if (!$wgUser->isLoggedIn())
  60                         $this->dieUsage('You must be logged-in to have a watchlist', 'notloggedin');
  61
  62                 $allrev = $start = $end = $namespace = $dir = $limit = $prop = null;
  63                 extract($this->extractRequestParams());
  64
  65                 if (!is_null($prop) && is_null($resultPageSet)) {
  66
  67                         $prop = array_flip($prop);
  68
  69                         $this->fld_ids = isset($prop['ids']);
  70                         $this->fld_title = isset($prop['title']);
  71                         $this->fld_flags = isset($prop['flags']);
  72                         $this->fld_user = isset($prop['user']);
  73                         $this->fld_comment = isset($prop['comment']);
  74                         $this->fld_timestamp = isset($prop['timestamp']);
  75                         $this->fld_patrol = isset($prop['patrol']);
  76
  77                         if ($this->fld_patrol) {
  78                                 global $wgUseRCPatrol, $wgUser;
  79                                 if (!$wgUseRCPatrol || !$wgUser->isAllowed('patrol'))
  80                                         $this->dieUsage('patrol property is not available', 'patrol');
  81                         }
  82                 }
  83
  84                 if (is_null($resultPageSet)) {
  85                         $this->addFields(array (
  86                                 'rc_cur_id',
  87                                 'rc_this_oldid',
  88                                 'rc_namespace',
  89                                 'rc_title',
  90                                 'rc_timestamp'
  91                         ));
  92
  93                         $this->addFieldsIf('rc_new', $this->fld_flags);
  94                         $this->addFieldsIf('rc_minor', $this->fld_flags);
  95                         $this->addFieldsIf('rc_user', $this->fld_user);
  96                         $this->addFieldsIf('rc_user_text', $this->fld_user);
  97                         $this->addFieldsIf('rc_comment', $this->fld_comment);
  98                         $this->addFieldsIf('rc_patrolled', $this->fld_patrol);
  99                 }
 100                 elseif ($allrev) {
 101                         $this->addFields(array (
 102                                 'rc_this_oldid',
 103                                 'rc_namespace',
 104                                 'rc_title',
 105                                 'rc_timestamp'
 106                         ));
 107                 } else {
 108                         $this->addFields(array (
 109                                 'rc_cur_id',
 110                                 'rc_namespace',
 111                                 'rc_title',
 112                                 'rc_timestamp'
 113                         ));
 114                 }
 115
 116                 $this->addTables(array (
 117                         'watchlist',
 118                         'page',
 119                         'recentchanges'
 120                 ));
 121
 122                 $userId = $wgUser->getID();
 123                 $this->addWhere(array (
 124                         'wl_namespace = rc_namespace',
 125                         'wl_title = rc_title',
 126                         'rc_cur_id = page_id',
 127                         'wl_user' => $userId,
 128                         'rc_deleted' => 0,
 129                 ));
 130
 131                 $this->addWhereRange('rc_timestamp', $dir, $start, $end);
 132                 $this->addWhereFld('wl_namespace', $namespace);
 133                 $this->addWhereIf('rc_this_oldid=page_latest', !$allrev);
 134
 135                 # This is a index optimization for mysql, as done in the Special:Watchlist page
 136                 $this->addWhereIf("rc_timestamp > ''", !isset ($start) && !isset ($end) && $wgDBtype == 'mysql');
 137
 138                 $this->addOption('LIMIT', $limit +1);
 139
 140                 $data = array ();
 141                 $count = 0;
 142                 $res = $this->select(__METHOD__);
 143
 144                 $db = $this->getDB();
 145                 while ($row = $db->fetchObject($res)) {
 146                         if (++ $count > $limit) {
 147                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 148                                 $this->setContinueEnumParameter('start', $row->rc_timestamp);
 149                                 break;
 150                         }
 151
 152                         if (is_null($resultPageSet)) {
 153                                 $vals = $this->extractRowInfo($row);
 154                                 if ($vals)
 155                                         $data[] = $vals;
 156                         } else {
 157                                 $title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
 158                                 // skip any pages that user has no rights to read
 159                                 if ($title->userCanRead()) {
 160                                         if ($allrev) {
 161                                                 $data[] = intval($row->rc_this_oldid);
 162                                         } else {
 163                                                 $data[] = intval($row->rc_cur_id);
 164                                         }
 165                                 }
 166                         }
 167                 }
 168
 169                 $db->freeResult($res);
 170
 171                 if (is_null($resultPageSet)) {
 172                         $this->getResult()->setIndexedTagName($data, 'item');
 173                         $this->getResult()->addValue('query', $this->getModuleName(), $data);
 174                 }
 175                 elseif ($allrev) {
 176                         $resultPageSet->populateFromRevisionIDs($data);
 177                 } else {
 178                         $resultPageSet->populateFromPageIDs($data);
 179                 }
 180         }
 181
 182         private function extractRowInfo($row) {
 183
 184                 $title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
 185                 if (!$title->userCanRead())
 186                         return false;
 187
 188                 $vals = array ();
 189
 190                 if ($this->fld_ids) {
 191                         $vals['pageid'] = intval($row->rc_cur_id);
 192                         $vals['revid'] = intval($row->rc_this_oldid);
 193                 }
 194
 195                 if ($this->fld_title)
 196                         ApiQueryBase :: addTitleInfo($vals, $title);
 197
 198                 if ($this->fld_user) {
 199                         $vals['user'] = $row->rc_user_text;
 200                         if (!$row->rc_user)
 201                                 $vals['anon'] = '';
 202                 }
 203
 204                 if ($this->fld_flags) {
 205                         if ($row->rc_new)
 206                                 $vals['new'] = '';
 207                         if ($row->rc_minor)
 208                                 $vals['minor'] = '';
 209                 }
 210
 211                 if ($this->fld_patrol && isset($row->rc_patrolled))
 212                         $vals['patrolled'] = '';
 213
 214                 if ($this->fld_timestamp)
 215                         $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rc_timestamp);
 216
 217                 if ($this->fld_comment && !empty ($row->rc_comment))
 218                         $vals['comment'] = $row->rc_comment;
 219
 220                 return $vals;
 221         }
 222
 223         protected function getAllowedParams() {
 224                 return array (
 225                         'allrev' => false,
 226                         'start' => array (
 227                                 ApiBase :: PARAM_TYPE => 'timestamp'
 228                         ),
 229                         'end' => array (
 230                                 ApiBase :: PARAM_TYPE => 'timestamp'
 231                         ),
 232                         'namespace' => array (
 233                                 ApiBase :: PARAM_ISMULTI => true,
 234                                 ApiBase :: PARAM_TYPE => 'namespace'
 235                         ),
 236                         'dir' => array (
 237                                 ApiBase :: PARAM_DFLT => 'older',
 238                                 ApiBase :: PARAM_TYPE => array (
 239                                         'newer',
 240                                         'older'
 241                                 )
 242                         ),
 243                         'limit' => array (
 244                                 ApiBase :: PARAM_DFLT => 10,
 245                                 ApiBase :: PARAM_TYPE => 'limit',
 246                                 ApiBase :: PARAM_MIN => 1,
 247                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 248                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 249                         ),
 250                         'prop' => array (
 251                                 APIBase :: PARAM_ISMULTI => true,
 252                                 APIBase :: PARAM_DFLT => 'ids|title|flags',
 253                                 APIBase :: PARAM_TYPE => array (
 254                                         'ids',
 255                                         'title',
 256                                         'flags',
 257                                         'user',
 258                                         'comment',
 259                                         'timestamp',
 260                                         'patrol'
 261                                 )
 262                         )
 263                 );
 264         }
 265
 266         protected function getParamDescription() {
 267                 return array (
 268                         'allrev' => 'Include multiple revisions of the same page within given timeframe.',
 269                         'start' => 'The timestamp to start enumerating from.',
 270                         'end' => 'The timestamp to end enumerating.',
 271                         'namespace' => 'Filter changes to only the given namespace(s).',
 272                         'dir' => 'In which direction to enumerate pages.',
 273                         'limit' => 'How many total pages to return per request.',
 274                         'prop' => 'Which additional items to get (non-generator mode only).'
 275                 );
 276         }
 277
 278         protected function getDescription() {
 279                 return '';
 280         }
 281
 282         protected function getExamples() {
 283                 return array (
 284                         'api.php?action=query&list=watchlist',
 285                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 286                         'api.php?action=query&list=watchlist&wlallrev&wlprop=ids|title|timestamp|user|comment',
 287                         'api.php?action=query&generator=watchlist&prop=info',
 288                         'api.php?action=query&generator=watchlist&gwlallrev&prop=revisions&rvprop=timestamp|user'
 289                 );
 290         }
 291
 292         public function getVersion() {
 293                 return __CLASS__ . ': $Id$';
 294         }
 295 }
 296