includes/api/ApiQueryUserContributions.php

   1 <?php
   2
   3 /*
   4  * Created on Oct 16, 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 adds a list of a specified user's contributions to the output.
  33  *
  34  * @addtogroup API
  35  */
  36 class ApiQueryContributions extends ApiQueryBase {
  37
  38         public function __construct($query, $moduleName) {
  39                 parent :: __construct($query, $moduleName, 'uc');
  40         }
  41
  42         private $params, $userTitle;
  43         private $fld_ids = false, $fld_title = false, $fld_timestamp = false,
  44                         $fld_comment = false, $fld_flags = false;
  45
  46         public function execute() {
  47
  48                 // Parse some parameters
  49                 $this->params = $this->extractRequestParams();
  50                 $prop = $this->params['prop'];
  51                 if (!is_null($prop)) {
  52                         $prop = array_flip($prop);
  53
  54                         $this->fld_ids = isset($prop['ids']);
  55                         $this->fld_title = isset($prop['title']);
  56                         $this->fld_comment = isset($prop['comment']);
  57                         $this->fld_flags = isset($prop['flags']);
  58                         $this->fld_timestamp = isset($prop['timestamp']);
  59                 }
  60
  61                 // TODO: if the query is going only against the revision table, should this be done?
  62                 $this->selectNamedDB('contributions', DB_SLAVE, 'contributions');
  63                 $db = $this->getDB();
  64
  65                 // Prepare query
  66                 $this->getUserTitle();
  67                 $this->prepareQuery();
  68
  69                 //Do the actual query.
  70                 $res = $this->select( __METHOD__ );
  71
  72                 //Initialise some variables
  73                 $data = array ();
  74                 $count = 0;
  75                 $limit = $this->params['limit'];
  76
  77                 //Fetch each row
  78                 while ( $row = $db->fetchObject( $res ) ) {
  79                         if (++ $count > $limit) {
  80                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
  81                                 $this->setContinueEnumParameter('start', $row->rev_timestamp);
  82                                 break;
  83                         }
  84
  85                         $vals = $this->extractRowInfo($row);
  86                         if ($vals)
  87                                 $data[] = $vals;
  88                 }
  89
  90                 //Free the database record so the connection can get on with other stuff
  91                 $db->freeResult($res);
  92
  93                 //And send the whole shebang out as output.
  94                 $this->getResult()->setIndexedTagName($data, 'item');
  95                 $this->getResult()->addValue('query', $this->getModuleName(), $data);
  96         }
  97
  98         /**
  99          * Convert 'user' parameter into a proper user login name.
 100          * This method also validates that this user actually exists in the database.
 101          */
 102         private function getUserTitle() {
 103
 104                 $user = $this->params['user'];
 105                 if (is_null($user))
 106                         $this->dieUsage("User parameter may not be empty", 'param_user');
 107
 108                 $userTitle = Title::makeTitleSafe( NS_USER, $user );
 109                 if ( is_null( $userTitle ) )
 110                         $this->dieUsage("User name $user is not valid", 'param_user');
 111
 112                 $userid = $this->getDB()->selectField('user', 'user_id', array (
 113                         'user_name' => $userTitle->getText()
 114                 ));
 115
 116                 if (!$userid)
 117                         $this->dieUsage("User name $user not found", 'param_user');
 118
 119                 $this->userTitle = $userTitle;
 120         }
 121
 122         /**
 123          * Prepares the query and returns the limit of rows requested
 124          */
 125         private function prepareQuery() {
 126
 127                 //We're after the revision table, and the corresponding page row for
 128                 //anything we retrieve.
 129                 list ($tbl_page, $tbl_revision) = $this->getDB()->tableNamesN('page', 'revision');
 130                 $this->addTables("$tbl_revision LEFT OUTER JOIN $tbl_page ON page_id=rev_page");
 131
 132                 $this->addWhereFld('rev_deleted', 0);
 133
 134                 // We only want pages by the specified user.
 135                 $this->addWhereFld('rev_user_text', $this->userTitle->getText());
 136
 137                 // ... and in the specified timeframe.
 138                 $this->addWhereRange('rev_timestamp',
 139                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 140
 141                 $show = $this->params['show'];
 142                 if (!is_null($show)) {
 143                         $show = array_flip($show);
 144                         if (isset ($show['minor']) && isset ($show['!minor']))
 145                                 $this->dieUsage("Incorrect parameter - mutually exclusive values may not be supplied", 'show');
 146
 147                         $this->addWhereIf('rev_minor_edit = 0', isset ($show['!minor']));
 148                         $this->addWhereIf('rev_minor_edit != 0', isset ($show['minor']));
 149                 }
 150
 151                 $this->addOption('LIMIT', $this->params['limit'] + 1);
 152
 153                 // Mandatory fields: timestamp allows request continuation
 154                 // ns+title checks if the user has access rights for this page
 155                 $this->addFields(array(
 156                         'rev_timestamp',
 157                         'page_namespace',
 158                         'page_title',
 159                         ));
 160
 161                 $this->addFieldsIf('rev_page', $this->fld_ids);
 162                 $this->addFieldsIf('rev_id', $this->fld_ids);
 163                 // $this->addFieldsIf('rev_text_id', $this->fld_ids); // Should this field be exposed?
 164                 $this->addFieldsIf('rev_comment', $this->fld_comment);
 165                 $this->addFieldsIf('rev_minor_edit', $this->fld_flags);
 166
 167                 // These fields depend only work if the page table is joined
 168                 $this->addFieldsIf('page_is_new', $this->fld_flags);
 169         }
 170
 171         /**
 172          * Extract fields from the database row and append them to a result array
 173          */
 174         private function extractRowInfo($row) {
 175
 176                 $title = Title :: makeTitle($row->page_namespace, $row->page_title);
 177                 if (!$title->userCanRead())
 178                         return false;
 179
 180                 $vals = array();
 181
 182                 if ($this->fld_ids) {
 183                         $vals['pageid'] = intval($row->rev_page);
 184                         $vals['revid'] = intval($row->rev_id);
 185                         // $vals['textid'] = intval($row->rev_text_id); // todo: Should this field be exposed?
 186                 }
 187
 188                 if ($this->fld_title)
 189                         ApiQueryBase :: addTitleInfo($vals, $title);
 190
 191                 if ($this->fld_timestamp)
 192                         $vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rev_timestamp);
 193
 194                 if ($this->fld_flags) {
 195                         if ($row->page_is_new)
 196                                 $vals['new'] = '';
 197                         if ($row->rev_minor_edit)
 198                                 $vals['minor'] = '';
 199                 }
 200
 201                 if ($this->fld_comment && !empty ($row->rev_comment))
 202                         $vals['comment'] = $row->rev_comment;
 203
 204                 return $vals;
 205         }
 206
 207         protected function getAllowedParams() {
 208                 return array (
 209                         'limit' => array (
 210                                 ApiBase :: PARAM_DFLT => 10,
 211                                 ApiBase :: PARAM_TYPE => 'limit',
 212                                 ApiBase :: PARAM_MIN => 1,
 213                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 214                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 215                         ),
 216                         'start' => array (
 217                                 ApiBase :: PARAM_TYPE => 'timestamp'
 218                         ),
 219                         'end' => array (
 220                                 ApiBase :: PARAM_TYPE => 'timestamp'
 221                         ),
 222                         'user' => array (
 223                                 ApiBase :: PARAM_TYPE => 'user'
 224                         ),
 225                         'dir' => array (
 226                                 ApiBase :: PARAM_DFLT => 'older',
 227                                 ApiBase :: PARAM_TYPE => array (
 228                                         'newer',
 229                                         'older'
 230                                 )
 231                         ),
 232                         'prop' => array (
 233                                 ApiBase :: PARAM_ISMULTI => true,
 234                                 ApiBase :: PARAM_DFLT => 'ids|title|timestamp|flags|comment',
 235                                 ApiBase :: PARAM_TYPE => array (
 236                                         'ids',
 237                                         'title',
 238                                         'timestamp',
 239                                         'comment',
 240                                         'flags'
 241                                 )
 242                         ),
 243                         'show' => array (
 244                                 ApiBase :: PARAM_ISMULTI => true,
 245                                 ApiBase :: PARAM_TYPE => array (
 246                                         'minor',
 247                                         '!minor',
 248                                 )
 249                         ),
 250                 );
 251         }
 252
 253         protected function getParamDescription() {
 254                 return array (
 255                         'limit' => 'The maximum number of contributions to return.',
 256                         'start' => 'The start timestamp to return from.',
 257                         'end' => 'The end timestamp to return to.',
 258                         'user' => 'The user to retrieve contributions for.',
 259                         'dir' => 'The direction to search (older or newer).',
 260                         'prop' => 'Include additional pieces of information',
 261                         'show' => 'Show only items that meet this criteria, e.g. non minor edits only: show=!minor',
 262                 );
 263         }
 264
 265         protected function getDescription() {
 266                 return 'Get edits by a user..';
 267         }
 268
 269         protected function getExamples() {
 270                 return array (
 271                         'api.php?action=query&list=usercontribs&ucuser=YurikBot'
 272                 );
 273         }
 274
 275         public function getVersion() {
 276                 return __CLASS__ . ': $Id$';
 277         }
 278 }
 279 ?>