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