includes/installer/MysqlUpdater.php

   1 <?php
   2 /**
   3  * MySQL-specific updater.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23
  24 /**
  25  * Mysql update list and mysql-specific update functions.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30 class MysqlUpdater extends DatabaseUpdater {
  31
  32         protected function getCoreUpdateList() {
  33                 return array(
  34                         // 1.2
  35                         array( 'addField', 'ipblocks',      'ipb_id',           'patch-ipblocks.sql' ),
  36                         array( 'addField', 'ipblocks',      'ipb_expiry',       'patch-ipb_expiry.sql' ),
  37                         array( 'doInterwikiUpdate' ),
  38                         array( 'doIndexUpdate' ),
  39                         array( 'addTable', 'hitcounter',                        'patch-hitcounter.sql' ),
  40                         array( 'addField', 'recentchanges', 'rc_type',          'patch-rc_type.sql' ),
  41
  42                         // 1.3
  43                         array( 'addField', 'user',          'user_real_name',   'patch-user-realname.sql' ),
  44                         array( 'addTable', 'querycache',                        'patch-querycache.sql' ),
  45                         array( 'addTable', 'objectcache',                       'patch-objectcache.sql' ),
  46                         array( 'addTable', 'categorylinks',                     'patch-categorylinks.sql' ),
  47                         array( 'doOldLinksUpdate' ),
  48                         array( 'doFixAncientImagelinks' ),
  49                         array( 'addField', 'recentchanges', 'rc_ip',            'patch-rc_ip.sql' ),
  50
  51                         // 1.4
  52                         array( 'addIndex', 'image',         'PRIMARY',          'patch-image_name_primary.sql' ),
  53                         array( 'addField', 'recentchanges', 'rc_id',            'patch-rc_id.sql' ),
  54                         array( 'addField', 'recentchanges', 'rc_patrolled',     'patch-rc-patrol.sql' ),
  55                         array( 'addTable', 'logging',                           'patch-logging.sql' ),
  56                         array( 'addField', 'user',          'user_token',       'patch-user_token.sql' ),
  57                         array( 'addField', 'watchlist',     'wl_notificationtimestamp', 'patch-email-notification.sql' ),
  58                         array( 'doWatchlistUpdate' ),
  59                         array( 'dropField', 'user',         'user_emailauthenticationtimestamp', 'patch-email-authentication.sql' ),
  60
  61                         // 1.5
  62                         array( 'doSchemaRestructuring' ),
  63                         array( 'addField', 'logging',       'log_params',       'patch-log_params.sql' ),
  64                         array( 'checkBin', 'logging',       'log_title',        'patch-logging-title.sql', ),
  65                         array( 'addField', 'archive',       'ar_rev_id',        'patch-archive-rev_id.sql' ),
  66                         array( 'addField', 'page',          'page_len',         'patch-page_len.sql' ),
  67                         array( 'dropField', 'revision',     'inverse_timestamp', 'patch-inverse_timestamp.sql' ),
  68                         array( 'addField', 'revision',      'rev_text_id',      'patch-rev_text_id.sql' ),
  69                         array( 'addField', 'revision',      'rev_deleted',      'patch-rev_deleted.sql' ),
  70                         array( 'addField', 'image',         'img_width',        'patch-img_width.sql' ),
  71                         array( 'addField', 'image',         'img_metadata',     'patch-img_metadata.sql' ),
  72                         array( 'addField', 'user',          'user_email_token', 'patch-user_email_token.sql' ),
  73                         array( 'addField', 'archive',       'ar_text_id',       'patch-archive-text_id.sql' ),
  74                         array( 'doNamespaceSize' ),
  75                         array( 'addField', 'image',         'img_media_type',   'patch-img_media_type.sql' ),
  76                         array( 'doPagelinksUpdate' ),
  77                         array( 'dropField', 'image',        'img_type',         'patch-drop_img_type.sql' ),
  78                         array( 'doUserUniqueUpdate' ),
  79                         array( 'doUserGroupsUpdate' ),
  80                         array( 'addField', 'site_stats',    'ss_total_pages',   'patch-ss_total_articles.sql' ),
  81                         array( 'addTable', 'user_newtalk',                      'patch-usernewtalk2.sql' ),
  82                         array( 'addTable', 'transcache',                        'patch-transcache.sql' ),
  83                         array( 'addField', 'interwiki',     'iw_trans',         'patch-interwiki-trans.sql' ),
  84
  85                         // 1.6
  86                         array( 'doWatchlistNull' ),
  87                         array( 'addIndex', 'logging',         'times',            'patch-logging-times-index.sql' ),
  88                         array( 'addField', 'ipblocks',        'ipb_range_start',  'patch-ipb_range_start.sql' ),
  89                         array( 'doPageRandomUpdate' ),
  90                         array( 'addField', 'user',            'user_registration', 'patch-user_registration.sql' ),
  91                         array( 'doTemplatelinksUpdate' ),
  92                         array( 'addTable', 'externallinks',                       'patch-externallinks.sql' ),
  93                         array( 'addTable', 'job',                                 'patch-job.sql' ),
  94                         array( 'addField', 'site_stats',      'ss_images',        'patch-ss_images.sql' ),
  95                         array( 'addTable', 'langlinks',                           'patch-langlinks.sql' ),
  96                         array( 'addTable', 'querycache_info',                     'patch-querycacheinfo.sql' ),
  97                         array( 'addTable', 'filearchive',                         'patch-filearchive.sql' ),
  98                         array( 'addField', 'ipblocks',        'ipb_anon_only',    'patch-ipb_anon_only.sql' ),
  99                         array( 'addIndex', 'recentchanges',   'rc_ns_usertext',   'patch-recentchanges-utindex.sql' ),
 100                         array( 'addIndex', 'recentchanges',   'rc_user_text',     'patch-rc_user_text-index.sql' ),
 101
 102                         // 1.9
 103                         array( 'addField', 'user',          'user_newpass_time', 'patch-user_newpass_time.sql' ),
 104                         array( 'addTable', 'redirect',                           'patch-redirect.sql' ),
 105                         array( 'addTable', 'querycachetwo',                      'patch-querycachetwo.sql' ),
 106                         array( 'addField', 'ipblocks',      'ipb_enable_autoblock', 'patch-ipb_optional_autoblock.sql' ),
 107                         array( 'doBacklinkingIndicesUpdate' ),
 108                         array( 'addField', 'recentchanges', 'rc_old_len',        'patch-rc_len.sql' ),
 109                         array( 'addField', 'user',          'user_editcount',    'patch-user_editcount.sql' ),
 110
 111                         // 1.10
 112                         array( 'doRestrictionsUpdate' ),
 113                         array( 'addField', 'logging',       'log_id',           'patch-log_id.sql' ),
 114                         array( 'addField', 'revision',      'rev_parent_id',    'patch-rev_parent_id.sql' ),
 115                         array( 'addField', 'page_restrictions', 'pr_id',        'patch-page_restrictions_sortkey.sql' ),
 116                         array( 'addField', 'revision',      'rev_len',          'patch-rev_len.sql' ),
 117                         array( 'addField', 'recentchanges', 'rc_deleted',       'patch-rc_deleted.sql' ),
 118                         array( 'addField', 'logging',       'log_deleted',      'patch-log_deleted.sql' ),
 119                         array( 'addField', 'archive',       'ar_deleted',       'patch-ar_deleted.sql' ),
 120                         array( 'addField', 'ipblocks',      'ipb_deleted',      'patch-ipb_deleted.sql' ),
 121                         array( 'addField', 'filearchive',   'fa_deleted',       'patch-fa_deleted.sql' ),
 122                         array( 'addField', 'archive',       'ar_len',           'patch-ar_len.sql' ),
 123
 124                         // 1.11
 125                         array( 'addField', 'ipblocks',      'ipb_block_email',  'patch-ipb_emailban.sql' ),
 126                         array( 'doCategorylinksIndicesUpdate' ),
 127                         array( 'addField', 'oldimage',      'oi_metadata',      'patch-oi_metadata.sql' ),
 128                         array( 'addIndex', 'archive',       'usertext_timestamp', 'patch-archive-user-index.sql' ),
 129                         array( 'addIndex', 'image',         'img_usertext_timestamp', 'patch-image-user-index.sql' ),
 130                         array( 'addIndex', 'oldimage',      'oi_usertext_timestamp', 'patch-oldimage-user-index.sql' ),
 131                         array( 'addField', 'archive',       'ar_page_id',       'patch-archive-page_id.sql' ),
 132                         array( 'addField', 'image',         'img_sha1',         'patch-img_sha1.sql' ),
 133
 134                         // 1.12
 135                         array( 'addTable', 'protected_titles',                  'patch-protected_titles.sql' ),
 136
 137                         // 1.13
 138                         array( 'addField', 'ipblocks',      'ipb_by_text',      'patch-ipb_by_text.sql' ),
 139                         array( 'addTable', 'page_props',                        'patch-page_props.sql' ),
 140                         array( 'addTable', 'updatelog',                         'patch-updatelog.sql' ),
 141                         array( 'addTable', 'category',                          'patch-category.sql' ),
 142                         array( 'doCategoryPopulation' ),
 143                         array( 'addField', 'archive',       'ar_parent_id',     'patch-ar_parent_id.sql' ),
 144                         array( 'addField', 'user_newtalk',  'user_last_timestamp', 'patch-user_last_timestamp.sql' ),
 145                         array( 'doPopulateParentId' ),
 146                         array( 'checkBin', 'protected_titles', 'pt_title',      'patch-pt_title-encoding.sql', ),
 147                         array( 'doMaybeProfilingMemoryUpdate' ),
 148                         array( 'doFilearchiveIndicesUpdate' ),
 149
 150                         // 1.14
 151                         array( 'addField', 'site_stats',    'ss_active_users',  'patch-ss_active_users.sql' ),
 152                         array( 'doActiveUsersInit' ),
 153                         array( 'addField', 'ipblocks',      'ipb_allow_usertalk', 'patch-ipb_allow_usertalk.sql' ),
 154
 155                         // 1.15
 156                         array( 'doUniquePlTlIl' ),
 157                         array( 'addTable', 'change_tag',                        'patch-change_tag.sql' ),
 158                         /* array( 'addTable', 'tag_summary',                       'patch-change_tag.sql' ), */
 159                         /* array( 'addTable', 'valid_tag',                         'patch-change_tag.sql' ), */
 160
 161                         // 1.16
 162                         array( 'addTable', 'user_properties',                   'patch-user_properties.sql' ),
 163                         array( 'addTable', 'log_search',                        'patch-log_search.sql' ),
 164                         array( 'addField', 'logging',       'log_user_text',    'patch-log_user_text.sql' ),
 165                         array( 'doLogUsertextPopulation' ), # listed separately from the previous update because 1.16 was released without this update
 166                         array( 'doLogSearchPopulation' ),
 167                         array( 'addTable', 'l10n_cache',                        'patch-l10n_cache.sql' ),
 168                         array( 'addTable', 'external_user',                     'patch-external_user.sql' ),
 169                         array( 'addIndex', 'log_search',    'ls_field_val',     'patch-log_search-rename-index.sql' ),
 170                         array( 'addIndex', 'change_tag',    'change_tag_rc_tag', 'patch-change_tag-indexes.sql' ),
 171                         array( 'addField', 'redirect',      'rd_interwiki',     'patch-rd_interwiki.sql' ),
 172                         array( 'doUpdateTranscacheField' ),
 173                         array( 'renameEuWikiId' ),
 174                         array( 'doUpdateMimeMinorField' ),
 175
 176                         // 1.17
 177                         array( 'addTable', 'iwlinks',                           'patch-iwlinks.sql' ),
 178                         array( 'addIndex', 'iwlinks', 'iwl_prefix_title_from',  'patch-rename-iwl_prefix.sql' ),
 179                         array( 'addField', 'updatelog',     'ul_value',         'patch-ul_value.sql' ),
 180                         array( 'addField', 'interwiki',     'iw_api',           'patch-iw_api_and_wikiid.sql' ),
 181                         array( 'dropIndex', 'iwlinks',      'iwl_prefix',       'patch-kill-iwl_prefix.sql' ),
 182                         array( 'dropIndex', 'iwlinks',      'iwl_prefix_from_title', 'patch-kill-iwl_pft.sql' ),
 183                         array( 'addField', 'categorylinks', 'cl_collation',     'patch-categorylinks-better-collation.sql' ),
 184                         array( 'doClFieldsUpdate' ),
 185                         array( 'doCollationUpdate' ),
 186                         array( 'addTable', 'msg_resource',                      'patch-msg_resource.sql' ),
 187                         array( 'addTable', 'module_deps',                       'patch-module_deps.sql' ),
 188                         array( 'dropIndex', 'archive',      'ar_page_revid',    'patch-archive_kill_ar_page_revid.sql' ),
 189                         array( 'addIndex', 'archive',       'ar_revid',         'patch-archive_ar_revid.sql' ),
 190                         array( 'doLangLinksLengthUpdate' ),
 191
 192                         // 1.18
 193                         array( 'doUserNewTalkTimestampNotNull' ),
 194                         array( 'addIndex', 'user',          'user_email',       'patch-user_email_index.sql' ),
 195                         array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
 196                         array( 'addTable', 'uploadstash',                       'patch-uploadstash.sql' ),
 197                         array( 'addTable', 'user_former_groups',                'patch-user_former_groups.sql'),
 198
 199                         // 1.19
 200                         array( 'addIndex', 'logging',       'type_action',      'patch-logging-type-action-index.sql'),
 201                         array( 'doMigrateUserOptions' ),
 202                         array( 'dropField', 'user',         'user_options', 'patch-drop-user_options.sql' ),
 203                         array( 'addField', 'revision',      'rev_sha1',         'patch-rev_sha1.sql' ),
 204                         array( 'addField', 'archive',       'ar_sha1',          'patch-ar_sha1.sql' ),
 205                         array( 'addIndex', 'page', 'page_redirect_namespace_len', 'patch-page_redirect_namespace_len.sql' ),
 206                         array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase.sql' ),
 207                         array( 'addField',      'uploadstash',  'us_chunk_inx',         'patch-uploadstash_chunk.sql' ),
 208                         array( 'addfield', 'job',           'job_timestamp',    'patch-jobs-add-timestamp.sql' ),
 209                         array( 'modifyField', 'user_former_groups', 'ufg_group', 'patch-ufg_group-length-increase.sql' ),
 210
 211                         // 1.20
 212                         array( 'addIndex', 'revision', 'page_user_timestamp', 'patch-revision-user-page-index.sql' ),
 213                         array( 'addField', 'ipblocks',      'ipb_parent_block_id',           'patch-ipb-parent-block-id.sql' ),
 214                         array( 'addIndex', 'ipblocks',      'ipb_parent_block_id',           'patch-ipb-parent-block-id-index.sql' ),
 215                         array( 'dropField', 'category',     'cat_hidden',       'patch-cat_hidden.sql' ),
 216
 217                         // 1.21
 218                         array( 'addField',      'revision',     'rev_content_format',           'patch-revision-rev_content_format.sql' ),
 219                         array( 'addField',      'revision',     'rev_content_model',            'patch-revision-rev_content_model.sql' ),
 220                         array( 'addField',      'archive',      'ar_content_format',            'patch-archive-ar_content_format.sql' ),
 221                         array( 'addField',      'archive',      'ar_content_model',                 'patch-archive-ar_content_model.sql' ),
 222                         array( 'addField',      'page',     'page_content_model',               'patch-page-page_content_model.sql' ),
 223                         array( 'dropField', 'site_stats',   'ss_admins',        'patch-drop-ss_admins.sql' ),
 224                         array( 'dropField', 'recentchanges', 'rc_moved_to_title',            'patch-rc_moved.sql' ),
 225                         array( 'addTable', 'sites',                            'patch-sites.sql' ),
 226                         array( 'addField', 'filearchive',   'fa_sha1',          'patch-fa_sha1.sql' ),
 227                         array( 'addField', 'job',           'job_token',         'patch-job_token.sql' ),
 228                         array( 'addField', 'job',           'job_attempts',       'patch-job_attempts.sql' ),
 229                         array( 'doEnableProfiling' ),
 230                         array( 'addField', 'uploadstash',      'us_props',      'patch-uploadstash-us_props.sql' ),
 231                 );
 232         }
 233
 234         /**
 235          * 1.4 betas were missing the 'binary' marker from logging.log_title,
 236          * which causes a collation mismatch error on joins in MySQL 4.1.
 237          *
 238          * @param $table String: table name
 239          * @param $field String: field name to check
 240          * @param $patchFile String: path to the patch to correct the field
 241          */
 242         protected function checkBin( $table, $field, $patchFile ) {
 243                 $tableName = $this->db->tableName( $table );
 244                 $res = $this->db->query( "SELECT $field FROM $tableName LIMIT 0", __METHOD__ );
 245                 $flags = explode( ' ', mysql_field_flags( $res->result, 0 ) );
 246
 247                 if ( in_array( 'binary', $flags ) ) {
 248                         $this->output( "...$table table has correct $field encoding.\n" );
 249                 } else {
 250                         $this->applyPatch( $patchFile, false, "Fixing $field encoding on $table table" );
 251                 }
 252         }
 253
 254         /**
 255          * Check whether an index contain a field
 256          *
 257          * @param $table String: table name
 258          * @param $index String: index name to check
 259          * @param $field String: field that should be in the index
 260          * @return Boolean
 261          */
 262         protected function indexHasField( $table, $index, $field ) {
 263                 $info = $this->db->indexInfo( $table, $index, __METHOD__ );
 264                 if ( $info ) {
 265                         foreach ( $info as $row ) {
 266                                 if ( $row->Column_name == $field ) {
 267                                         $this->output( "...index $index on table $table includes field $field.\n" );
 268                                         return true;
 269                                 }
 270                         }
 271                 }
 272                 $this->output( "...index $index on table $table has no field $field; added.\n" );
 273                 return false;
 274         }
 275
 276         /**
 277          * Check that interwiki table exists; if it doesn't source it
 278          */
 279         protected function doInterwikiUpdate() {
 280                 global $IP;
 281
 282                 if ( $this->db->tableExists( "interwiki", __METHOD__ ) ) {
 283                         $this->output( "...already have interwiki table\n" );
 284                         return;
 285                 }
 286
 287                 $this->applyPatch( 'patch-interwiki.sql', false, 'Creating interwiki table' );
 288                 $this->applyPatch( "$IP/maintenance/interwiki.sql", true, 'Adding default interwiki definitions' );
 289         }
 290
 291         /**
 292          * Check that proper indexes are in place
 293          */
 294         protected function doIndexUpdate() {
 295                 $meta = $this->db->fieldInfo( 'recentchanges', 'rc_timestamp' );
 296                 if ( $meta === false ) {
 297                         throw new MWException( 'Missing rc_timestamp field of recentchanges table. Should not happen.' );
 298                 }
 299                 if ( $meta->isMultipleKey() ) {
 300                         $this->output( "...indexes seem up to 20031107 standards.\n" );
 301                         return;
 302                 }
 303
 304                 $this->applyPatch( 'patch-indexes.sql', true, "Updating indexes to 20031107" );
 305         }
 306
 307         protected function doOldLinksUpdate() {
 308                 $cl = $this->maintenance->runChild( 'ConvertLinks' );
 309                 $cl->execute();
 310         }
 311
 312         protected function doFixAncientImagelinks() {
 313                 $info = $this->db->fieldInfo( 'imagelinks', 'il_from' );
 314                 if ( !$info || $info->type() !== 'string' ) {
 315                         $this->output( "...il_from OK\n" );
 316                         return;
 317                 }
 318
 319                 if( $this->applyPatch( 'patch-fix-il_from.sql', false, "Fixing ancient broken imagelinks table." ) ) {
 320                         $this->output("NOTE: you will have to run maintenance/refreshLinks.php after this." );
 321                 }
 322         }
 323
 324         /**
 325          * Check if we need to add talk page rows to the watchlist
 326          */
 327         function doWatchlistUpdate() {
 328                 $talk = $this->db->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', __METHOD__ );
 329                 $nontalk = $this->db->selectField( 'watchlist', 'count(*)', 'NOT (wl_namespace & 1)', __METHOD__ );
 330                 if ( $talk == $nontalk ) {
 331                         $this->output( "...watchlist talk page rows already present.\n" );
 332                         return;
 333                 }
 334
 335                 $this->output( "Adding missing watchlist talk page rows... " );
 336                 $this->db->insertSelect( 'watchlist', 'watchlist',
 337                         array(
 338                                 'wl_user' => 'wl_user',
 339                                 'wl_namespace' => 'wl_namespace | 1',
 340                                 'wl_title' => 'wl_title',
 341                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 342                         ), array( 'NOT (wl_namespace & 1)' ), __METHOD__, 'IGNORE' );
 343                 $this->output( "done.\n" );
 344         }
 345
 346         function doSchemaRestructuring() {
 347                 if ( $this->db->tableExists( 'page', __METHOD__ ) ) {
 348                         $this->output( "...page table already exists.\n" );
 349                         return;
 350                 }
 351
 352                 $this->output( "...converting from cur/old to page/revision/text DB structure.\n" );
 353                 $this->output( wfTimestamp( TS_DB ) );
 354                 $this->output( "......checking for duplicate entries.\n" );
 355
 356                 list ( $cur, $old, $page, $revision, $text ) = $this->db->tableNamesN( 'cur', 'old', 'page', 'revision', 'text' );
 357
 358                 $rows = $this->db->query( "SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 359                                 FROM $cur GROUP BY cur_title, cur_namespace HAVING c>1", __METHOD__ );
 360
 361                 if ( $rows->numRows() > 0 ) {
 362                         $this->output( wfTimestamp( TS_DB ) );
 363                         $this->output( "......<b>Found duplicate entries</b>\n" );
 364                         $this->output( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 365                         $duplicate = array();
 366                         foreach ( $rows as $row ) {
 367                                 if ( ! isset( $duplicate[$row->cur_namespace] ) ) {
 368                                         $duplicate[$row->cur_namespace] = array();
 369                                 }
 370                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 371                                 $this->output( sprintf( "      %-60s %3s %5s\n", $row->cur_title, $row->cur_namespace, $row->c ) );
 372                         }
 373                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 374                         $firstCond = true;
 375                         foreach ( $duplicate as $ns => $titles ) {
 376                                 if ( $firstCond ) {
 377                                         $firstCond = false;
 378                                 } else {
 379                                         $sql .= ' OR ';
 380                                 }
 381                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 382                                 $first = true;
 383                                 foreach ( $titles as $t ) {
 384                                         if ( $first ) {
 385                                                 $sql .= $this->db->addQuotes( $t );
 386                                                 $first = false;
 387                                         } else {
 388                                                 $sql .= ', ' . $this->db->addQuotes( $t );
 389                                         }
 390                                 }
 391                                 $sql .= ") ) \n";
 392                         }
 393                         # By sorting descending, the most recent entry will be the first in the list.
 394                         # All following entries will be deleted by the next while-loop.
 395                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 396
 397                         $rows = $this->db->query( $sql, __METHOD__ );
 398
 399                         $prev_title = $prev_namespace = false;
 400                         $deleteId = array();
 401
 402                         foreach ( $rows as $row ) {
 403                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 404                                         $deleteId[] = $row->cur_id;
 405                                 }
 406                                 $prev_title     = $row->cur_title;
 407                                 $prev_namespace = $row->cur_namespace;
 408                         }
 409                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . join( ',', $deleteId ) . ')';
 410                         $this->db->query( $sql, __METHOD__ );
 411                         $this->output( wfTimestamp( TS_DB ) );
 412                         $this->output( "......<b>Deleted</b> " . $this->db->affectedRows() . " records.\n" );
 413                 }
 414
 415                 $this->output( wfTimestamp( TS_DB ) );
 416                 $this->output( "......Creating tables.\n" );
 417                 $this->db->query( "CREATE TABLE $page (
 418                         page_id int(8) unsigned NOT NULL auto_increment,
 419                         page_namespace int NOT NULL,
 420                         page_title varchar(255) binary NOT NULL,
 421                         page_restrictions tinyblob NOT NULL,
 422                         page_counter bigint(20) unsigned NOT NULL default '0',
 423                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 424                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 425                         page_random real unsigned NOT NULL,
 426                         page_touched char(14) binary NOT NULL default '',
 427                         page_latest int(8) unsigned NOT NULL,
 428                         page_len int(8) unsigned NOT NULL,
 429
 430                         PRIMARY KEY page_id (page_id),
 431                         UNIQUE INDEX name_title (page_namespace,page_title),
 432                         INDEX (page_random),
 433                         INDEX (page_len)
 434                         ) ENGINE=InnoDB", __METHOD__ );
 435                 $this->db->query( "CREATE TABLE $revision (
 436                         rev_id int(8) unsigned NOT NULL auto_increment,
 437                         rev_page int(8) unsigned NOT NULL,
 438                         rev_comment tinyblob NOT NULL,
 439                         rev_user int(5) unsigned NOT NULL default '0',
 440                         rev_user_text varchar(255) binary NOT NULL default '',
 441                         rev_timestamp char(14) binary NOT NULL default '',
 442                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 443                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 444                         rev_len int(8) unsigned,
 445                         rev_parent_id int(8) unsigned default NULL,
 446                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 447                         UNIQUE INDEX rev_id (rev_id),
 448                         INDEX rev_timestamp (rev_timestamp),
 449                         INDEX page_timestamp (rev_page,rev_timestamp),
 450                         INDEX user_timestamp (rev_user,rev_timestamp),
 451                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 452                         ) ENGINE=InnoDB", __METHOD__ );
 453
 454                 $this->output( wfTimestamp( TS_DB ) );
 455                 $this->output( "......Locking tables.\n" );
 456                 $this->db->query( "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE", __METHOD__ );
 457
 458                 $maxold = intval( $this->db->selectField( 'old', 'max(old_id)', '', __METHOD__ ) );
 459                 $this->output( wfTimestamp( TS_DB ) );
 460                 $this->output( "......maxold is {$maxold}\n" );
 461
 462                 $this->output( wfTimestamp( TS_DB ) );
 463                 global $wgLegacySchemaConversion;
 464                 if ( $wgLegacySchemaConversion ) {
 465                         // Create HistoryBlobCurStub entries.
 466                         // Text will be pulled from the leftover 'cur' table at runtime.
 467                         $this->output( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 468                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 469                         $cur_flags = "'object'";
 470                 } else {
 471                         // Copy all cur text in immediately: this may take longer but avoids
 472                         // having to keep an extra table around.
 473                         $this->output( "......Moving text from cur.\n" );
 474                         $cur_text = 'cur_text';
 475                         $cur_flags = "''";
 476                 }
 477                 $this->db->query( "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user, old_user_text,
 478                                         old_timestamp, old_minor_edit, old_flags)
 479                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text, cur_timestamp, cur_minor_edit, $cur_flags
 480                         FROM $cur", __METHOD__ );
 481
 482                 $this->output( wfTimestamp( TS_DB ) );
 483                 $this->output( "......Setting up revision table.\n" );
 484                 $this->db->query( "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user, rev_user_text, rev_timestamp,
 485                                 rev_minor_edit)
 486                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 487                                 old_timestamp, old_minor_edit
 488                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title", __METHOD__ );
 489
 490                 $this->output( wfTimestamp( TS_DB ) );
 491                 $this->output( "......Setting up page table.\n" );
 492                 $this->db->query( "INSERT INTO $page (page_id, page_namespace, page_title, page_restrictions, page_counter,
 493                         page_is_redirect, page_is_new, page_random, page_touched, page_latest, page_len)
 494                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions, cur_counter, cur_is_redirect, cur_is_new,
 495                                 cur_random, cur_touched, rev_id, LENGTH(cur_text)
 496                         FROM $cur,$revision
 497                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}", __METHOD__ );
 498
 499                 $this->output( wfTimestamp( TS_DB ) );
 500                 $this->output( "......Unlocking tables.\n" );
 501                 $this->db->query( "UNLOCK TABLES", __METHOD__ );
 502
 503                 $this->output( wfTimestamp( TS_DB ) );
 504                 $this->output( "......Renaming old.\n" );
 505                 $this->db->query( "ALTER TABLE $old RENAME TO $text", __METHOD__ );
 506
 507                 $this->output( wfTimestamp( TS_DB ) );
 508                 $this->output( "...done.\n" );
 509         }
 510
 511         protected function doNamespaceSize() {
 512                 $tables = array(
 513                         'page'          => 'page',
 514                         'archive'       => 'ar',
 515                         'recentchanges' => 'rc',
 516                         'watchlist'     => 'wl',
 517                         'querycache'    => 'qc',
 518                         'logging'       => 'log',
 519                 );
 520                 foreach ( $tables as $table => $prefix ) {
 521                         $field = $prefix . '_namespace';
 522
 523                         $tablename = $this->db->tableName( $table );
 524                         $result = $this->db->query( "SHOW COLUMNS FROM $tablename LIKE '$field'", __METHOD__ );
 525                         $info = $this->db->fetchObject( $result );
 526
 527                         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 528                                 $this->output( "...$field is already a full int ($info->Type).\n" );
 529                         } else {
 530                                 $this->output( "Promoting $field from $info->Type to int... " );
 531                                 $this->db->query( "ALTER TABLE $tablename MODIFY $field int NOT NULL", __METHOD__ );
 532                                 $this->output( "done.\n" );
 533                         }
 534                 }
 535         }
 536
 537         protected function doPagelinksUpdate() {
 538                 if ( $this->db->tableExists( 'pagelinks', __METHOD__ ) ) {
 539                         $this->output( "...already have pagelinks table.\n" );
 540                         return;
 541                 }
 542
 543                 $this->applyPatch( 'patch-pagelinks.sql', false, "Converting links and brokenlinks tables to pagelinks" );
 544
 545                 global $wgContLang;
 546                 foreach ( MWNamespace::getCanonicalNamespaces() as $ns => $name ) {
 547                         if ( $ns == 0 ) {
 548                                 continue;
 549                         }
 550
 551                         $this->output( "Cleaning up broken links for namespace $ns... " );
 552
 553                         $pagelinks = $this->db->tableName( 'pagelinks' );
 554                         $name = $wgContLang->getNsText( $ns );
 555                         $prefix = $this->db->strencode( $name );
 556                         $likeprefix = str_replace( '_', '\\_', $prefix );
 557
 558                         $sql = "UPDATE $pagelinks
 559                                            SET pl_namespace=$ns,
 560                                                    pl_title=TRIM(LEADING '$prefix:' FROM pl_title)
 561                                          WHERE pl_namespace=0
 562                                            AND pl_title LIKE '$likeprefix:%'";
 563
 564                         $this->db->query( $sql, __METHOD__ );
 565                         $this->output( "done.\n" );
 566                 }
 567         }
 568
 569         protected function doUserUniqueUpdate() {
 570                 $duper = new UserDupes( $this->db, array( $this, 'output' ) );
 571                 if ( $duper->hasUniqueIndex() ) {
 572                         $this->output( "...already have unique user_name index.\n" );
 573                         return;
 574                 }
 575
 576                 if ( !$duper->clearDupes() ) {
 577                         $this->output( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 578                 }
 579                 $this->applyPatch( 'patch-user_nameindex.sql', false, "Adding unique index on user_name" );
 580         }
 581
 582         protected function doUserGroupsUpdate() {
 583                 if ( $this->db->tableExists( 'user_groups', __METHOD__ ) ) {
 584                         $info = $this->db->fieldInfo( 'user_groups', 'ug_group' );
 585                         if ( $info->type() == 'int' ) {
 586                                 $oldug = $this->db->tableName( 'user_groups' );
 587                                 $newug = $this->db->tableName( 'user_groups_bogus' );
 588                                 $this->output( "user_groups table exists but is in bogus intermediate format. Renaming to $newug... " );
 589                                 $this->db->query( "ALTER TABLE $oldug RENAME TO $newug", __METHOD__ );
 590                                 $this->output( "done.\n" );
 591
 592                                 $this->applyPatch( 'patch-user_groups.sql', false, "Re-adding fresh user_groups table" );
 593
 594                                 $this->output( "***\n" );
 595                                 $this->output( "*** WARNING: You will need to manually fix up user permissions in the user_groups\n" );
 596                                 $this->output( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 597                                 $this->output( "***\n" );
 598                         } else {
 599                                 $this->output( "...user_groups table exists and is in current format.\n" );
 600                         }
 601                         return;
 602                 }
 603
 604                 $this->applyPatch( 'patch-user_groups.sql', false, "Adding user_groups table" );
 605
 606                 if ( !$this->db->tableExists( 'user_rights', __METHOD__ ) ) {
 607                         if ( $this->db->fieldExists( 'user', 'user_rights', __METHOD__ ) ) {
 608                                 $this->db->applyPatch( 'patch-user_rights.sql', false, "Upgrading from a 1.3 or older database? Breaking out user_rights for conversion" );
 609                         } else {
 610                                 $this->output( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 611                                 $this->output( "*** You may need to manually configure some sysops by manipulating\n" );
 612                                 $this->output( "*** the user_groups table.\n" );
 613                                 return;
 614                         }
 615                 }
 616
 617                 $this->output( "Converting user_rights table to user_groups... " );
 618                 $result = $this->db->select( 'user_rights',
 619                         array( 'ur_user', 'ur_rights' ),
 620                         array( "ur_rights != ''" ),
 621                         __METHOD__ );
 622
 623                 foreach ( $result as $row ) {
 624                         $groups = array_unique(
 625                                 array_map( 'trim',
 626                                         explode( ',', $row->ur_rights ) ) );
 627
 628                         foreach ( $groups as $group ) {
 629                                 $this->db->insert( 'user_groups',
 630                                         array(
 631                                                 'ug_user'  => $row->ur_user,
 632                                                 'ug_group' => $group ),
 633                                         __METHOD__ );
 634                         }
 635                 }
 636                 $this->output( "done.\n" );
 637         }
 638
 639         /**
 640          * Make sure wl_notificationtimestamp can be NULL,
 641          * and update old broken items.
 642          */
 643         protected function doWatchlistNull() {
 644                 $info = $this->db->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 645                 if ( !$info ) {
 646                         return;
 647                 }
 648                 if ( $info->isNullable() ) {
 649                         $this->output( "...wl_notificationtimestamp is already nullable.\n" );
 650                         return;
 651                 }
 652
 653                 $this->applyPatch( 'patch-watchlist-null.sql', false, "Making wl_notificationtimestamp nullable" );
 654         }
 655
 656         /**
 657          * Set page_random field to a random value where it is equals to 0.
 658          *
 659          * @see bug 3946
 660          */
 661         protected function doPageRandomUpdate() {
 662                 $page = $this->db->tableName( 'page' );
 663                 $this->db->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", __METHOD__ );
 664                 $rows = $this->db->affectedRows();
 665
 666                 if( $rows ) {
 667                         $this->output( "Set page_random to a random value on $rows rows where it was set to 0\n" );
 668                 } else {
 669                         $this->output( "...no page_random rows needed to be set\n" );
 670                 }
 671         }
 672
 673         protected function doTemplatelinksUpdate() {
 674                 if ( $this->db->tableExists( 'templatelinks', __METHOD__ ) ) {
 675                         $this->output( "...templatelinks table already exists\n" );
 676                         return;
 677                 }
 678
 679                 $this->applyPatch( 'patch-templatelinks.sql', false, "Creating templatelinks table" );
 680
 681                 $this->output( "Populating...\n" );
 682                 if ( wfGetLB()->getServerCount() > 1 ) {
 683                         // Slow, replication-friendly update
 684                         $res = $this->db->select( 'pagelinks', array( 'pl_from', 'pl_namespace', 'pl_title' ),
 685                                 array( 'pl_namespace' => NS_TEMPLATE ), __METHOD__ );
 686                         $count = 0;
 687                         foreach ( $res as $row ) {
 688                                 $count = ( $count + 1 ) % 100;
 689                                 if ( $count == 0 ) {
 690                                         wfWaitForSlaves();
 691                                 }
 692                                 $this->db->insert( 'templatelinks',
 693                                         array(
 694                                                 'tl_from' => $row->pl_from,
 695                                                 'tl_namespace' => $row->pl_namespace,
 696                                                 'tl_title' => $row->pl_title,
 697                                         ), __METHOD__
 698                                 );
 699
 700                         }
 701                 } else {
 702                         // Fast update
 703                         $this->db->insertSelect( 'templatelinks', 'pagelinks',
 704                                 array(
 705                                         'tl_from' => 'pl_from',
 706                                         'tl_namespace' => 'pl_namespace',
 707                                         'tl_title' => 'pl_title'
 708                                 ), array(
 709                                         'pl_namespace' => 10
 710                                 ), __METHOD__
 711                         );
 712                 }
 713                 $this->output( "Done. Please run maintenance/refreshLinks.php for a more thorough templatelinks update.\n" );
 714         }
 715
 716         protected function doBacklinkingIndicesUpdate() {
 717                 if ( !$this->indexHasField( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 718                         !$this->indexHasField( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 719                         !$this->indexHasField( 'imagelinks', 'il_to', 'il_from' ) )
 720                 {
 721                         $this->applyPatch( 'patch-backlinkindexes.sql', false, "Updating backlinking indices" );
 722                 }
 723         }
 724
 725         /**
 726          * Adding page_restrictions table, obsoleting page.page_restrictions.
 727          * Migrating old restrictions to new table
 728          * -- Andrew Garrett, January 2007.
 729          */
 730         protected function doRestrictionsUpdate() {
 731                 if ( $this->db->tableExists( 'page_restrictions', __METHOD__ ) ) {
 732                         $this->output( "...page_restrictions table already exists.\n" );
 733                         return;
 734                 }
 735
 736                 $this->applyPatch( 'patch-page_restrictions.sql', false, "Creating page_restrictions table (1/2)" );
 737                 $this->applyPatch( 'patch-page_restrictions_sortkey.sql', false, "Creating page_restrictions table (2/2)" );
 738                 $this->output( "done.\n" );
 739
 740                 $this->output( "Migrating old restrictions to new table...\n" );
 741                 $task = $this->maintenance->runChild( 'UpdateRestrictions' );
 742                 $task->execute();
 743         }
 744
 745         protected function doCategorylinksIndicesUpdate() {
 746                 if ( !$this->indexHasField( 'categorylinks', 'cl_sortkey', 'cl_from' ) ) {
 747                         $this->applyPatch( 'patch-categorylinksindex.sql', false, "Updating categorylinks Indices" );
 748                 }
 749         }
 750
 751         protected function doCategoryPopulation() {
 752                 if ( $this->updateRowExists( 'populate category' ) ) {
 753                         $this->output( "...category table already populated.\n" );
 754                         return;
 755                 }
 756
 757                 $this->output(
 758                         "Populating category table, printing progress markers. " .
 759                         "For large databases, you\n" .
 760                         "may want to hit Ctrl-C and do this manually with maintenance/\n" .
 761                         "populateCategory.php.\n"
 762                 );
 763                 $task = $this->maintenance->runChild( 'PopulateCategory' );
 764                 $task->execute();
 765                 $this->output( "Done populating category table.\n" );
 766         }
 767
 768         protected function doPopulateParentId() {
 769                 if ( !$this->updateRowExists( 'populate rev_parent_id' ) ) {
 770                         $this->output(
 771                                 "Populating rev_parent_id fields, printing progress markers. For large\n" .
 772                                 "databases, you may want to hit Ctrl-C and do this manually with\n" .
 773                                 "maintenance/populateParentId.php.\n" );
 774
 775                         $task = $this->maintenance->runChild( 'PopulateParentId' );
 776                         $task->execute();
 777                 }
 778         }
 779
 780         protected function doEnableProfiling() {
 781                 global $wgProfileToDatabase;
 782                 if ( $wgProfileToDatabase === true && ! $this->db->tableExists( 'profiling', __METHOD__ ) ) {
 783                         $this->applyPatch( 'patch-profiling.sql', false, 'Add profiling table' );
 784                 }
 785         }
 786
 787         protected function doMaybeProfilingMemoryUpdate() {
 788                 if ( !$this->db->tableExists( 'profiling', __METHOD__ ) ) {
 789                         return true;
 790                 } elseif ( $this->db->fieldExists( 'profiling', 'pf_memory', __METHOD__ ) ) {
 791                         $this->output( "...profiling table has pf_memory field.\n" );
 792                         return true;
 793                 }
 794                 return $this->applyPatch( 'patch-profiling-memory.sql', false, "Adding pf_memory field to table profiling" );
 795         }
 796
 797         protected function doFilearchiveIndicesUpdate() {
 798                 $info = $this->db->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 799                 if ( !$info ) {
 800                         $this->applyPatch( 'patch-filearchive-user-index.sql', false, "Updating filearchive indices" );
 801                 }
 802                 return true;
 803         }
 804
 805         protected function doUniquePlTlIl() {
 806                 $info = $this->db->indexInfo( 'pagelinks', 'pl_namespace' );
 807                 if ( is_array( $info ) && !$info[0]->Non_unique ) {
 808                         $this->output( "...pl_namespace, tl_namespace, il_to indices are already UNIQUE.\n" );
 809                         return true;
 810                 }
 811                 if ( $this->skipSchema ) {
 812                         $this->output( "...skipping schema change (making pl_namespace, tl_namespace and il_to indices UNIQUE).\n" );
 813                         return false;
 814                 }
 815
 816                 return $this->applyPatch( 'patch-pl-tl-il-unique.sql', false, "Making pl_namespace, tl_namespace and il_to indices UNIQUE" );
 817         }
 818
 819         protected function renameEuWikiId() {
 820                 if ( $this->db->fieldExists( 'external_user', 'eu_local_id', __METHOD__ ) ) {
 821                         $this->output( "...eu_wiki_id already renamed to eu_local_id.\n" );
 822                         return;
 823                 }
 824
 825                 $this->applyPatch( 'patch-eu_local_id.sql', false, "Renaming eu_wiki_id -> eu_local_id" );
 826         }
 827
 828         protected function doUpdateMimeMinorField() {
 829                 if ( $this->updateRowExists( 'mime_minor_length' ) ) {
 830                         $this->output( "...*_mime_minor fields are already long enough.\n" );
 831                         return;
 832                 }
 833
 834                 $this->applyPatch( 'patch-mime_minor_length.sql', false, "Altering all *_mime_minor fields to 100 bytes in size" );
 835         }
 836
 837         protected function doClFieldsUpdate() {
 838                 if ( $this->updateRowExists( 'cl_fields_update' ) ) {
 839                         $this->output( "...categorylinks up-to-date.\n" );
 840                         return;
 841                 }
 842
 843                 $this->applyPatch( 'patch-categorylinks-better-collation2.sql', false, 'Updating categorylinks (again)' );
 844         }
 845
 846         protected function doLangLinksLengthUpdate() {
 847                 $langlinks = $this->db->tableName( 'langlinks' );
 848                 $res = $this->db->query( "SHOW COLUMNS FROM $langlinks LIKE 'll_lang'" );
 849                 $row = $this->db->fetchObject( $res );
 850
 851                 if ( $row && $row->Type == "varbinary(10)" ) {
 852                         $this->applyPatch( 'patch-langlinks-ll_lang-20.sql', false, 'Updating length of ll_lang in langlinks' );
 853                 } else {
 854                         $this->output( "...ll_lang is up-to-date.\n" );
 855                 }
 856         }
 857
 858         protected function doUserNewTalkTimestampNotNull() {
 859                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_last_timestamp' );
 860                 if ( $info === false ) {
 861                         return;
 862                 }
 863                 if ( $info->isNullable() ) {
 864                         $this->output( "...user_last_timestamp is already nullable.\n" );
 865                         return;
 866                 }
 867
 868                 $this->applyPatch( 'patch-user-newtalk-timestamp-null.sql', false, "Making user_last_timestamp nullable" );
 869         }
 870 }