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, $fld_sizes = false;
  53
  54         private function run($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                         $this->fld_sizes = isset($prop['sizes']);
  76                         $this->fld_patrol = isset($prop['patrol']);
  77
  78                         if ($this->fld_patrol) {
  79                                 global $wgUseRCPatrol, $wgUser;
  80                                 if (!$wgUseRCPatrol || !$wgUser->isAllowed('patrol'))
  81                                         $this->dieUsage('patrol property is not available', 'patrol');
  82                         }
  83                 }
  84
  85                 if (is_null($resultPageSet)) {
  86                         $this->addFields(array (
  87                                 'rc_cur_id',
  88                                 'rc_this_oldid',
  89                                 'rc_namespace',
  90                                 'rc_title',
  91                                 'rc_timestamp'
  92                         ));
  93
  94                         $this->addFieldsIf('rc_new', $this->fld_flags);
  95                         $this->addFieldsIf('rc_minor', $this->fld_flags);
  96                         $this->addFieldsIf('rc_user', $this->fld_user);
  97                         $this->addFieldsIf('rc_user_text', $this->fld_user);
  98                         $this->addFieldsIf('rc_comment', $this->fld_comment);
  99                         $this->addFieldsIf('rc_patrolled', $this->fld_patrol);
 100                         $this->addFieldsIf('rc_old_len', $this->fld_sizes);
 101                         $this->addFieldsIf('rc_new_len', $this->fld_sizes);
 102                 }
 103                 elseif ($allrev) {
 104                         $this->addFields(array (
 105                                 'rc_this_oldid',
 106                                 'rc_namespace',
 107                                 'rc_title',
 108                                 'rc_timestamp'
 109                         ));
 110                 } else {
 111                         $this->addFields(array (
 112                                 'rc_cur_id',
 113                                 'rc_namespace',
 114                                 'rc_title',
 115                                 'rc_timestamp'
 116                         ));
 117                 }
 118
 119                 $this->addTables(array (
 120                         'watchlist',
 121                         'page',
 122                         'recentchanges'
 123                 ));
 124
 125                 $userId = $wgUser->getID();
 126                 $this->addWhere(array (
 127                         'wl_namespace = rc_namespace',
 128                         'wl_title = rc_title',
 129                         'rc_cur_id = page_id',
 130                         'wl_user' => $userId,
 131                         'rc_deleted' => 0,
 132                 ));
 133
 134                 $this->addWhereRange('rc_timestamp', $dir, $start, $end);
 135                 $this->addWhereFld('wl_namespace', $namespace);
 136                 $this->addWhereIf('rc_this_oldid=page_latest', !$allrev);
 137
 138                 # This is a index optimization for mysql, as done in the Special:Watchlist page
 139                 $this->addWhereIf("rc_timestamp > ''", !isset ($start) && !isset ($end) && $wgDBtype == 'mysql');
 140
 141                 $this->addOption('LIMIT', $limit +1);
 142
 143                 $data = array ();
 144                 $count = 0;
 145                 $res = $this->select(__METHOD__);
 146
 147                 $db = $this->getDB();
 148                 while ($row = $db->fetchObject($res)) {
 149                         if (++ $count > $limit) {
 150                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 151                                 $this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->rc_timestamp));
 152                                 break;
 153                         }
 154
 155                         if (is_null($resultPageSet)) {
 156                                 $vals = $this->extractRowInfo($row);
 157                                 if ($vals)
 158                                         $data[] = $vals;
 159                         } else {
 160                                 $title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
 161                                 // skip any pages that user has no rights to read
 162                                 if ($title->userCanRead()) {
 163                                         if ($allrev) {
 164                                                 $data[] = intval($row->rc_this_oldid);
 165                                         } else {
 166                                                 $data[] = intval($row->rc_cur_id);
 167                                         }
 168                                 }
 169                         }
 170                 }
 171
 172                 $db->freeResult($res);
 173
 174                 if (is_null($resultPageSet)) {
 175                         $this->getResult()->setIndexedTagName($data, 'item');
 176                         $this->getResult()->addValue('query', $this->getModuleName(), $data);
 177                 }
 178                 elseif ($allrev) {
 179                         $resultPageSet->populateFromRevisionIDs($data);
 180                 } else {
 181                         $resultPageSet->populateFromPageIDs($data);
 182                 }
 183         }
 184
 185         private function extractRowInfo($row) {
 186
 187                 $title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
 188                 if (!$title->userCanRead())
 189                         return false;
 190
 191                 $vals = array ();
 192
 193                 if ($this->fld_ids) {
 194                         $vals['pageid'] = intval($row->rc_cur_id);
 195                         $vals['revid'] = intval($row->rc_this_oldid);
 196                 }
 197
 198                 if ($this->fld_title)
 199                         ApiQueryBase :: addTitleInfo($vals, $title);
 200
 201                 if ($this->fld_user) {
 202                         $vals['user'] = $row->rc_user_text;
 203                         if (!$row->rc_user)
 204                                 $vals['anon'] = '';
 205                 }
 206
 207                 if ($this->fld_flags) {
 208                         if ($row->rc_new)
 209                                 $vals['new'] = '';
 210                         if ($row->rc_minor)
 211                                 $vals['minor'] = '';
 212                 }
 213
 214                 if ($this->fld_patrol && isset($row->rc_patrolled))
 215                         $vals['patrolled'] = '';
 216
 217                 if ($this->fld_timestamp)
 218                         $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rc_timestamp);
 219
 220                         $this->addFieldsIf('rc_new_len', $this->fld_sizes);
 221
 222                 if ($this->fld_sizes) {
 223                         $vals['oldlen'] = intval($row->rc_old_len);
 224                         $vals['newlen'] = intval($row->rc_new_len);
 225                 }
 226
 227                 if ($this->fld_comment && !empty ($row->rc_comment))
 228                         $vals['comment'] = $row->rc_comment;
 229
 230                 return $vals;
 231         }
 232
 233         protected function getAllowedParams() {
 234                 return array (
 235                         'allrev' => false,
 236                         'start' => array (
 237                                 ApiBase :: PARAM_TYPE => 'timestamp'
 238                         ),
 239                         'end' => array (
 240                                 ApiBase :: PARAM_TYPE => 'timestamp'
 241                         ),
 242                         'namespace' => array (
 243                                 ApiBase :: PARAM_ISMULTI => true,
 244                                 ApiBase :: PARAM_TYPE => 'namespace'
 245                         ),
 246                         'dir' => array (
 247                                 ApiBase :: PARAM_DFLT => 'older',
 248                                 ApiBase :: PARAM_TYPE => array (
 249                                         'newer',
 250                                         'older'
 251                                 )
 252                         ),
 253                         'limit' => array (
 254                                 ApiBase :: PARAM_DFLT => 10,
 255                                 ApiBase :: PARAM_TYPE => 'limit',
 256                                 ApiBase :: PARAM_MIN => 1,
 257                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 258                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 259                         ),
 260                         'prop' => array (
 261                                 APIBase :: PARAM_ISMULTI => true,
 262                                 APIBase :: PARAM_DFLT => 'ids|title|flags',
 263                                 APIBase :: PARAM_TYPE => array (
 264                                         'ids',
 265                                         'title',
 266                                         'flags',
 267                                         'user',
 268                                         'comment',
 269                                         'timestamp',
 270                                         'patrol',
 271                                         'sizes',
 272                                 )
 273                         )
 274                 );
 275         }
 276
 277         protected function getParamDescription() {
 278                 return array (
 279                         'allrev' => 'Include multiple revisions of the same page within given timeframe.',
 280                         'start' => 'The timestamp to start enumerating from.',
 281                         'end' => 'The timestamp to end enumerating.',
 282                         'namespace' => 'Filter changes to only the given namespace(s).',
 283                         'dir' => 'In which direction to enumerate pages.',
 284                         'limit' => 'How many total pages to return per request.',
 285                         'prop' => 'Which additional items to get (non-generator mode only).'
 286                 );
 287         }
 288
 289         protected function getDescription() {
 290                 return '';
 291         }
 292
 293         protected function getExamples() {
 294                 return array (
 295                         'api.php?action=query&list=watchlist',
 296                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 297                         'api.php?action=query&list=watchlist&wlallrev&wlprop=ids|title|timestamp|user|comment',
 298                         'api.php?action=query&generator=watchlist&prop=info',
 299                         'api.php?action=query&generator=watchlist&gwlallrev&prop=revisions&rvprop=timestamp|user'
 300                 );
 301         }
 302
 303         public function getVersion() {
 304                 return __CLASS__ . ': $Id$';
 305         }
 306 }
 307