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         protected function getCoreUpdateList() {
  32                 return array(
  33                         array( 'disableContentHandlerUseDB' ),
  34
  35                         // 1.2
  36                         array( 'addField', 'ipblocks', 'ipb_id', 'patch-ipblocks.sql' ),
  37                         array( 'addField', 'ipblocks', 'ipb_expiry', 'patch-ipb_expiry.sql' ),
  38                         array( 'doInterwikiUpdate' ),
  39                         array( 'doIndexUpdate' ),
  40                         array( 'addField', 'recentchanges', 'rc_type', 'patch-rc_type.sql' ),
  41                         array( 'addIndex', 'recentchanges', 'new_name_timestamp', 'patch-rc-newindex.sql' ),
  42
  43                         // 1.3
  44                         array( 'addField', 'user', 'user_real_name', 'patch-user-realname.sql' ),
  45                         array( 'addTable', 'querycache', 'patch-querycache.sql' ),
  46                         array( 'addTable', 'objectcache', 'patch-objectcache.sql' ),
  47                         array( 'addTable', 'categorylinks', 'patch-categorylinks.sql' ),
  48                         array( 'doOldLinksUpdate' ),
  49                         array( 'doFixAncientImagelinks' ),
  50                         array( 'addField', 'recentchanges', 'rc_ip', 'patch-rc_ip.sql' ),
  51
  52                         // 1.4
  53                         array( 'addIndex', 'image', 'PRIMARY', 'patch-image_name_primary.sql' ),
  54                         array( 'addField', 'recentchanges', 'rc_id', 'patch-rc_id.sql' ),
  55                         array( 'addField', 'recentchanges', 'rc_patrolled', 'patch-rc-patrol.sql' ),
  56                         array( 'addTable', 'logging', 'patch-logging.sql' ),
  57                         array( 'addField', 'user', 'user_token', 'patch-user_token.sql' ),
  58                         array( 'addField', 'watchlist', 'wl_notificationtimestamp', 'patch-email-notification.sql' ),
  59                         array( 'doWatchlistUpdate' ),
  60                         array( 'dropField', 'user', 'user_emailauthenticationtimestamp',
  61                                 'patch-email-authentication.sql' ),
  62
  63                         // 1.5
  64                         array( 'doSchemaRestructuring' ),
  65                         array( 'addField', 'logging', 'log_params', 'patch-log_params.sql' ),
  66                         array( 'checkBin', 'logging', 'log_title', 'patch-logging-title.sql', ),
  67                         array( 'addField', 'archive', 'ar_rev_id', 'patch-archive-rev_id.sql' ),
  68                         array( 'addField', 'page', 'page_len', 'patch-page_len.sql' ),
  69                         array( 'dropField', 'revision', 'inverse_timestamp', 'patch-inverse_timestamp.sql' ),
  70                         array( 'addField', 'revision', 'rev_text_id', 'patch-rev_text_id.sql' ),
  71                         array( 'addField', 'revision', 'rev_deleted', 'patch-rev_deleted.sql' ),
  72                         array( 'addField', 'image', 'img_width', 'patch-img_width.sql' ),
  73                         array( 'addField', 'image', 'img_metadata', 'patch-img_metadata.sql' ),
  74                         array( 'addField', 'user', 'user_email_token', 'patch-user_email_token.sql' ),
  75                         array( 'addField', 'archive', 'ar_text_id', 'patch-archive-text_id.sql' ),
  76                         array( 'doNamespaceSize' ),
  77                         array( 'addField', 'image', 'img_media_type', 'patch-img_media_type.sql' ),
  78                         array( 'doPagelinksUpdate' ),
  79                         array( 'dropField', 'image', 'img_type', 'patch-drop_img_type.sql' ),
  80                         array( 'doUserUniqueUpdate' ),
  81                         array( 'doUserGroupsUpdate' ),
  82                         array( 'addField', 'site_stats', 'ss_total_pages', 'patch-ss_total_articles.sql' ),
  83                         array( 'addTable', 'user_newtalk', 'patch-usernewtalk2.sql' ),
  84                         array( 'addTable', 'transcache', 'patch-transcache.sql' ),
  85                         array( 'addField', 'interwiki', 'iw_trans', 'patch-interwiki-trans.sql' ),
  86
  87                         // 1.6
  88                         array( 'doWatchlistNull' ),
  89                         array( 'addIndex', 'logging', 'times', 'patch-logging-times-index.sql' ),
  90                         array( 'addField', 'ipblocks', 'ipb_range_start', 'patch-ipb_range_start.sql' ),
  91                         array( 'doPageRandomUpdate' ),
  92                         array( 'addField', 'user', 'user_registration', 'patch-user_registration.sql' ),
  93                         array( 'doTemplatelinksUpdate' ),
  94                         array( 'addTable', 'externallinks', 'patch-externallinks.sql' ),
  95                         array( 'addTable', 'job', 'patch-job.sql' ),
  96                         array( 'addField', 'site_stats', 'ss_images', 'patch-ss_images.sql' ),
  97                         array( 'addTable', 'langlinks', 'patch-langlinks.sql' ),
  98                         array( 'addTable', 'querycache_info', 'patch-querycacheinfo.sql' ),
  99                         array( 'addTable', 'filearchive', 'patch-filearchive.sql' ),
 100                         array( 'addField', 'ipblocks', 'ipb_anon_only', 'patch-ipb_anon_only.sql' ),
 101                         array( 'addIndex', 'recentchanges', 'rc_ns_usertext', 'patch-recentchanges-utindex.sql' ),
 102                         array( 'addIndex', 'recentchanges', 'rc_user_text', 'patch-rc_user_text-index.sql' ),
 103
 104                         // 1.9
 105                         array( 'addField', 'user', 'user_newpass_time', 'patch-user_newpass_time.sql' ),
 106                         array( 'addTable', 'redirect', 'patch-redirect.sql' ),
 107                         array( 'addTable', 'querycachetwo', 'patch-querycachetwo.sql' ),
 108                         array( 'addField', 'ipblocks', 'ipb_enable_autoblock', 'patch-ipb_optional_autoblock.sql' ),
 109                         array( 'doBacklinkingIndicesUpdate' ),
 110                         array( 'addField', 'recentchanges', 'rc_old_len', 'patch-rc_len.sql' ),
 111                         array( 'addField', 'user', 'user_editcount', 'patch-user_editcount.sql' ),
 112
 113                         // 1.10
 114                         array( 'doRestrictionsUpdate' ),
 115                         array( 'addField', 'logging', 'log_id', 'patch-log_id.sql' ),
 116                         array( 'addField', 'revision', 'rev_parent_id', 'patch-rev_parent_id.sql' ),
 117                         array( 'addField', 'page_restrictions', 'pr_id', 'patch-page_restrictions_sortkey.sql' ),
 118                         array( 'addField', 'revision', 'rev_len', 'patch-rev_len.sql' ),
 119                         array( 'addField', 'recentchanges', 'rc_deleted', 'patch-rc_deleted.sql' ),
 120                         array( 'addField', 'logging', 'log_deleted', 'patch-log_deleted.sql' ),
 121                         array( 'addField', 'archive', 'ar_deleted', 'patch-ar_deleted.sql' ),
 122                         array( 'addField', 'ipblocks', 'ipb_deleted', 'patch-ipb_deleted.sql' ),
 123                         array( 'addField', 'filearchive', 'fa_deleted', 'patch-fa_deleted.sql' ),
 124                         array( 'addField', 'archive', 'ar_len', 'patch-ar_len.sql' ),
 125
 126                         // 1.11
 127                         array( 'addField', 'ipblocks', 'ipb_block_email', 'patch-ipb_emailban.sql' ),
 128                         array( 'doCategorylinksIndicesUpdate' ),
 129                         array( 'addField', 'oldimage', 'oi_metadata', 'patch-oi_metadata.sql' ),
 130                         array( 'addIndex', 'archive', 'usertext_timestamp', 'patch-archive-user-index.sql' ),
 131                         array( 'addIndex', 'image', 'img_usertext_timestamp', 'patch-image-user-index.sql' ),
 132                         array( 'addIndex', 'oldimage', 'oi_usertext_timestamp', 'patch-oldimage-user-index.sql' ),
 133                         array( 'addField', 'archive', 'ar_page_id', 'patch-archive-page_id.sql' ),
 134                         array( 'addField', 'image', 'img_sha1', 'patch-img_sha1.sql' ),
 135
 136                         // 1.12
 137                         array( 'addTable', 'protected_titles', 'patch-protected_titles.sql' ),
 138
 139                         // 1.13
 140                         array( 'addField', 'ipblocks', 'ipb_by_text', 'patch-ipb_by_text.sql' ),
 141                         array( 'addTable', 'page_props', 'patch-page_props.sql' ),
 142                         array( 'addTable', 'updatelog', 'patch-updatelog.sql' ),
 143                         array( 'addTable', 'category', 'patch-category.sql' ),
 144                         array( 'doCategoryPopulation' ),
 145                         array( 'addField', 'archive', 'ar_parent_id', 'patch-ar_parent_id.sql' ),
 146                         array( 'addField', 'user_newtalk', 'user_last_timestamp', 'patch-user_last_timestamp.sql' ),
 147                         array( 'doPopulateParentId' ),
 148                         array( 'checkBin', 'protected_titles', 'pt_title', 'patch-pt_title-encoding.sql', ),
 149                         array( 'doMaybeProfilingMemoryUpdate' ),
 150                         array( 'doFilearchiveIndicesUpdate' ),
 151
 152                         // 1.14
 153                         array( 'addField', 'site_stats', 'ss_active_users', 'patch-ss_active_users.sql' ),
 154                         array( 'doActiveUsersInit' ),
 155                         array( 'addField', 'ipblocks', 'ipb_allow_usertalk', 'patch-ipb_allow_usertalk.sql' ),
 156
 157                         // 1.15
 158                         array( 'doUniquePlTlIl' ),
 159                         array( 'addTable', 'change_tag', 'patch-change_tag.sql' ),
 160                         array( 'addTable', 'tag_summary', 'patch-tag_summary.sql' ),
 161                         array( 'addTable', 'valid_tag', 'patch-valid_tag.sql' ),
 162
 163                         // 1.16
 164                         array( 'addTable', 'user_properties', 'patch-user_properties.sql' ),
 165                         array( 'addTable', 'log_search', 'patch-log_search.sql' ),
 166                         array( 'addField', 'logging', 'log_user_text', 'patch-log_user_text.sql' ),
 167                         # listed separately from the previous update because 1.16 was released without this update
 168                         array( 'doLogUsertextPopulation' ),
 169                         array( 'doLogSearchPopulation' ),
 170                         array( 'addTable', 'l10n_cache', 'patch-l10n_cache.sql' ),
 171                         array( 'addIndex', 'log_search', 'ls_field_val', 'patch-log_search-rename-index.sql' ),
 172                         array( 'addIndex', 'change_tag', 'change_tag_rc_tag', 'patch-change_tag-indexes.sql' ),
 173                         array( 'addField', 'redirect', 'rd_interwiki', 'patch-rd_interwiki.sql' ),
 174                         array( 'doUpdateTranscacheField' ),
 175                         array( 'doUpdateMimeMinorField' ),
 176
 177                         // 1.17
 178                         array( 'addTable', 'iwlinks', 'patch-iwlinks.sql' ),
 179                         array( 'addIndex', 'iwlinks', 'iwl_prefix_title_from', 'patch-rename-iwl_prefix.sql' ),
 180                         array( 'addField', 'updatelog', 'ul_value', 'patch-ul_value.sql' ),
 181                         array( 'addField', 'interwiki', 'iw_api', 'patch-iw_api_and_wikiid.sql' ),
 182                         array( 'dropIndex', 'iwlinks', 'iwl_prefix', 'patch-kill-iwl_prefix.sql' ),
 183                         array( 'addField', 'categorylinks', 'cl_collation', 'patch-categorylinks-better-collation.sql' ),
 184                         array( 'doClFieldsUpdate' ),
 185                         array( 'doCollationUpdate' ),
 186                         array( 'addTable', 'module_deps', 'patch-module_deps.sql' ),
 187                         array( 'dropIndex', 'archive', 'ar_page_revid', 'patch-archive_kill_ar_page_revid.sql' ),
 188                         array( 'addIndex', 'archive', 'ar_revid', 'patch-archive_ar_revid.sql' ),
 189                         array( 'doLangLinksLengthUpdate' ),
 190
 191                         // 1.18
 192                         array( 'doUserNewTalkTimestampNotNull' ),
 193                         array( 'addIndex', 'user', 'user_email', 'patch-user_email_index.sql' ),
 194                         array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
 195                         array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
 196                         array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),
 197
 198                         // 1.19
 199                         array( 'addIndex', 'logging', 'type_action', 'patch-logging-type-action-index.sql' ),
 200                         array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1.sql' ),
 201                         array( 'doMigrateUserOptions' ),
 202                         array( 'dropField', 'user', 'user_options', 'patch-drop-user_options.sql' ),
 203                         array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1.sql' ),
 204                         array( 'addIndex', 'page', 'page_redirect_namespace_len',
 205                                 'patch-page_redirect_namespace_len.sql' ),
 206                         array( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-uploadstash_chunk.sql' ),
 207                         array( 'addfield', 'job', 'job_timestamp', 'patch-jobs-add-timestamp.sql' ),
 208
 209                         // 1.20
 210                         array( 'addIndex', 'revision', 'page_user_timestamp', 'patch-revision-user-page-index.sql' ),
 211                         array( 'addField', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id.sql' ),
 212                         array( 'addIndex', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id-index.sql' ),
 213                         array( 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ),
 214
 215                         // 1.21
 216                         array( 'addField', 'revision', 'rev_content_format', 'patch-revision-rev_content_format.sql' ),
 217                         array( 'addField', 'revision', 'rev_content_model', 'patch-revision-rev_content_model.sql' ),
 218                         array( 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ),
 219                         array( 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ),
 220                         array( 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ),
 221                         array( 'enableContentHandlerUseDB' ),
 222                         array( 'dropField', 'site_stats', 'ss_admins', 'patch-drop-ss_admins.sql' ),
 223                         array( 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ),
 224                         array( 'addTable', 'sites', 'patch-sites.sql' ),
 225                         array( 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ),
 226                         array( 'addField', 'job', 'job_token', 'patch-job_token.sql' ),
 227                         array( 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ),
 228                         array( 'doEnableProfiling' ),
 229                         array( 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ),
 230                         array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ),
 231                         array( 'modifyField', 'user_former_groups', 'ufg_group',
 232                                 'patch-ufg_group-length-increase-255.sql' ),
 233                         array( 'addIndex', 'page_props', 'pp_propname_page',
 234                                 'patch-page_props-propname-page-index.sql' ),
 235                         array( 'addIndex', 'image', 'img_media_mime', 'patch-img_media_mime-index.sql' ),
 236
 237                         // 1.22
 238                         array( 'doIwlinksIndexNonUnique' ),
 239                         array( 'addIndex', 'iwlinks', 'iwl_prefix_from_title',
 240                                 'patch-iwlinks-from-title-index.sql' ),
 241                         array( 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ),
 242                         array( 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ),
 243
 244                         // 1.23
 245                         array( 'addField', 'recentchanges', 'rc_source', 'patch-rc_source.sql' ),
 246                         array( 'addIndex', 'logging', 'log_user_text_type_time',
 247                                 'patch-logging_user_text_type_time_index.sql' ),
 248                         array( 'addIndex', 'logging', 'log_user_text_time', 'patch-logging_user_text_time_index.sql' ),
 249                         array( 'addField', 'page', 'page_links_updated', 'patch-page_links_updated.sql' ),
 250                         array( 'addField', 'user', 'user_password_expires', 'patch-user_password_expire.sql' ),
 251
 252                         // 1.24
 253                         array( 'addField', 'page_props', 'pp_sortkey', 'patch-pp_sortkey.sql' ),
 254                         array( 'dropField', 'recentchanges', 'rc_cur_time', 'patch-drop-rc_cur_time.sql' ),
 255                         array( 'addIndex', 'watchlist', 'wl_user_notificationtimestamp',
 256                                 'patch-watchlist-user-notificationtimestamp-index.sql' ),
 257                         array( 'addField', 'page', 'page_lang', 'patch-page_lang.sql' ),
 258                         array( 'addField', 'pagelinks', 'pl_from_namespace', 'patch-pl_from_namespace.sql' ),
 259                         array( 'addField', 'templatelinks', 'tl_from_namespace', 'patch-tl_from_namespace.sql' ),
 260                         array( 'addField', 'imagelinks', 'il_from_namespace', 'patch-il_from_namespace.sql' ),
 261                         array( 'modifyField', 'image', 'img_major_mime',
 262                                 'patch-img_major_mime-chemical.sql' ),
 263                         array( 'modifyField', 'oldimage', 'oi_major_mime',
 264                                 'patch-oi_major_mime-chemical.sql' ),
 265                         array( 'modifyField', 'filearchive', 'fa_major_mime',
 266                                 'patch-fa_major_mime-chemical.sql' ),
 267
 268                         // 1.25
 269                         array( 'doUserNewTalkUseridUnsigned' ),
 270                         // note this patch covers other _comment and _description fields too
 271                         array( 'modifyField', 'recentchanges', 'rc_comment', 'patch-editsummary-length.sql' ),
 272
 273                         // 1.26
 274                         array( 'dropTable', 'hitcounter' ),
 275                         array( 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ),
 276                         array( 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ),
 277
 278                         // 1.27
 279                         array( 'dropTable', 'msg_resource_links' ),
 280                         array( 'dropTable', 'msg_resource' ),
 281                 );
 282         }
 283
 284         /**
 285          * 1.4 betas were missing the 'binary' marker from logging.log_title,
 286          * which causes a collation mismatch error on joins in MySQL 4.1.
 287          *
 288          * @param string $table Table name
 289          * @param string $field Field name to check
 290          * @param string $patchFile Path to the patch to correct the field
 291          * @return bool
 292          */
 293         protected function checkBin( $table, $field, $patchFile ) {
 294                 if ( !$this->doTable( $table ) ) {
 295                         return true;
 296                 }
 297
 298                 /** @var MySQLField $fieldInfo */
 299                 $fieldInfo = $this->db->fieldInfo( $table, $field );
 300                 if ( $fieldInfo->isBinary() ) {
 301                         $this->output( "...$table table has correct $field encoding.\n" );
 302                 } else {
 303                         $this->applyPatch( $patchFile, false, "Fixing $field encoding on $table table" );
 304                 }
 305         }
 306
 307         /**
 308          * Check whether an index contain a field
 309          *
 310          * @param string $table Table name
 311          * @param string $index Index name to check
 312          * @param string $field Field that should be in the index
 313          * @return bool
 314          */
 315         protected function indexHasField( $table, $index, $field ) {
 316                 if ( !$this->doTable( $table ) ) {
 317                         return true;
 318                 }
 319
 320                 $info = $this->db->indexInfo( $table, $index, __METHOD__ );
 321                 if ( $info ) {
 322                         foreach ( $info as $row ) {
 323                                 if ( $row->Column_name == $field ) {
 324                                         $this->output( "...index $index on table $table includes field $field.\n" );
 325
 326                                         return true;
 327                                 }
 328                         }
 329                 }
 330                 $this->output( "...index $index on table $table has no field $field; added.\n" );
 331
 332                 return false;
 333         }
 334
 335         /**
 336          * Check that interwiki table exists; if it doesn't source it
 337          */
 338         protected function doInterwikiUpdate() {
 339                 global $IP;
 340
 341                 if ( !$this->doTable( 'interwiki' ) ) {
 342                         return true;
 343                 }
 344
 345                 if ( $this->db->tableExists( "interwiki", __METHOD__ ) ) {
 346                         $this->output( "...already have interwiki table\n" );
 347
 348                         return;
 349                 }
 350
 351                 $this->applyPatch( 'patch-interwiki.sql', false, 'Creating interwiki table' );
 352                 $this->applyPatch(
 353                         "$IP/maintenance/interwiki.sql",
 354                         true,
 355                         'Adding default interwiki definitions'
 356                 );
 357         }
 358
 359         /**
 360          * Check that proper indexes are in place
 361          */
 362         protected function doIndexUpdate() {
 363                 $meta = $this->db->fieldInfo( 'recentchanges', 'rc_timestamp' );
 364                 if ( $meta === false ) {
 365                         throw new MWException( 'Missing rc_timestamp field of recentchanges table. Should not happen.' );
 366                 }
 367                 if ( $meta->isMultipleKey() ) {
 368                         $this->output( "...indexes seem up to 20031107 standards.\n" );
 369
 370                         return;
 371                 }
 372
 373                 $this->applyPatch( 'patch-indexes.sql', true, "Updating indexes to 20031107" );
 374         }
 375
 376         protected function doOldLinksUpdate() {
 377                 $cl = $this->maintenance->runChild( 'ConvertLinks' );
 378                 $cl->execute();
 379         }
 380
 381         protected function doFixAncientImagelinks() {
 382                 $info = $this->db->fieldInfo( 'imagelinks', 'il_from' );
 383                 if ( !$info || $info->type() !== 'string' ) {
 384                         $this->output( "...il_from OK\n" );
 385
 386                         return;
 387                 }
 388
 389                 $applied = $this->applyPatch(
 390                         'patch-fix-il_from.sql',
 391                         false,
 392                         'Fixing ancient broken imagelinks table.'
 393                 );
 394
 395                 if ( $applied ) {
 396                         $this->output( "NOTE: you will have to run maintenance/refreshLinks.php after this." );
 397                 }
 398         }
 399
 400         /**
 401          * Check if we need to add talk page rows to the watchlist
 402          */
 403         function doWatchlistUpdate() {
 404                 $talk = $this->db->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', __METHOD__ );
 405                 $nontalk = $this->db->selectField(
 406                         'watchlist',
 407                         'count(*)',
 408                         'NOT (wl_namespace & 1)',
 409                         __METHOD__
 410                 );
 411                 if ( $talk == $nontalk ) {
 412                         $this->output( "...watchlist talk page rows already present.\n" );
 413
 414                         return;
 415                 }
 416
 417                 $this->output( "Adding missing watchlist talk page rows... " );
 418                 $this->db->insertSelect( 'watchlist', 'watchlist',
 419                         array(
 420                                 'wl_user' => 'wl_user',
 421                                 'wl_namespace' => 'wl_namespace | 1',
 422                                 'wl_title' => 'wl_title',
 423                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 424                         ), array( 'NOT (wl_namespace & 1)' ), __METHOD__, 'IGNORE' );
 425                 $this->output( "done.\n" );
 426
 427                 $this->output( "Adding missing watchlist subject page rows... " );
 428                 $this->db->insertSelect( 'watchlist', 'watchlist',
 429                         array(
 430                                 'wl_user' => 'wl_user',
 431                                 'wl_namespace' => 'wl_namespace & ~1',
 432                                 'wl_title' => 'wl_title',
 433                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 434                         ), array( 'wl_namespace & 1' ), __METHOD__, 'IGNORE' );
 435                 $this->output( "done.\n" );
 436         }
 437
 438         function doSchemaRestructuring() {
 439                 if ( $this->db->tableExists( 'page', __METHOD__ ) ) {
 440                         $this->output( "...page table already exists.\n" );
 441
 442                         return;
 443                 }
 444
 445                 $this->output( "...converting from cur/old to page/revision/text DB structure.\n" );
 446                 $this->output( wfTimestamp( TS_DB ) );
 447                 $this->output( "......checking for duplicate entries.\n" );
 448
 449                 list( $cur, $old, $page, $revision, $text ) = $this->db->tableNamesN(
 450                         'cur',
 451                         'old',
 452                         'page',
 453                         'revision',
 454                         'text'
 455                 );
 456
 457                 $rows = $this->db->query( "
 458                         SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 459                         FROM $cur
 460                         GROUP BY cur_title, cur_namespace
 461                         HAVING c>1",
 462                         __METHOD__
 463                 );
 464
 465                 if ( $rows->numRows() > 0 ) {
 466                         $this->output( wfTimestamp( TS_DB ) );
 467                         $this->output( "......<b>Found duplicate entries</b>\n" );
 468                         $this->output( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 469                         $duplicate = array();
 470                         foreach ( $rows as $row ) {
 471                                 if ( !isset( $duplicate[$row->cur_namespace] ) ) {
 472                                         $duplicate[$row->cur_namespace] = array();
 473                                 }
 474
 475                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 476                                 $this->output( sprintf(
 477                                         "      %-60s %3s %5s\n",
 478                                         $row->cur_title, $row->cur_namespace,
 479                                         $row->c
 480                                 ) );
 481                         }
 482                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 483                         $firstCond = true;
 484                         foreach ( $duplicate as $ns => $titles ) {
 485                                 if ( $firstCond ) {
 486                                         $firstCond = false;
 487                                 } else {
 488                                         $sql .= ' OR ';
 489                                 }
 490                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 491                                 $first = true;
 492                                 foreach ( $titles as $t ) {
 493                                         if ( $first ) {
 494                                                 $sql .= $this->db->addQuotes( $t );
 495                                                 $first = false;
 496                                         } else {
 497                                                 $sql .= ', ' . $this->db->addQuotes( $t );
 498                                         }
 499                                 }
 500                                 $sql .= ") ) \n";
 501                         }
 502                         # By sorting descending, the most recent entry will be the first in the list.
 503                         # All following entries will be deleted by the next while-loop.
 504                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 505
 506                         $rows = $this->db->query( $sql, __METHOD__ );
 507
 508                         $prev_title = $prev_namespace = false;
 509                         $deleteId = array();
 510
 511                         foreach ( $rows as $row ) {
 512                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 513                                         $deleteId[] = $row->cur_id;
 514                                 }
 515                                 $prev_title = $row->cur_title;
 516                                 $prev_namespace = $row->cur_namespace;
 517                         }
 518                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . join( ',', $deleteId ) . ')';
 519                         $this->db->query( $sql, __METHOD__ );
 520                         $this->output( wfTimestamp( TS_DB ) );
 521                         $this->output( "......<b>Deleted</b> " . $this->db->affectedRows() . " records.\n" );
 522                 }
 523
 524                 $this->output( wfTimestamp( TS_DB ) );
 525                 $this->output( "......Creating tables.\n" );
 526                 $this->db->query( "CREATE TABLE $page (
 527                         page_id int(8) unsigned NOT NULL auto_increment,
 528                         page_namespace int NOT NULL,
 529                         page_title varchar(255) binary NOT NULL,
 530                         page_restrictions tinyblob NOT NULL,
 531                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 532                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 533                         page_random real unsigned NOT NULL,
 534                         page_touched char(14) binary NOT NULL default '',
 535                         page_latest int(8) unsigned NOT NULL,
 536                         page_len int(8) unsigned NOT NULL,
 537
 538                         PRIMARY KEY page_id (page_id),
 539                         UNIQUE INDEX name_title (page_namespace,page_title),
 540                         INDEX (page_random),
 541                         INDEX (page_len)
 542                         ) ENGINE=InnoDB", __METHOD__ );
 543                 $this->db->query( "CREATE TABLE $revision (
 544                         rev_id int(8) unsigned NOT NULL auto_increment,
 545                         rev_page int(8) unsigned NOT NULL,
 546                         rev_comment tinyblob NOT NULL,
 547                         rev_user int(5) unsigned NOT NULL default '0',
 548                         rev_user_text varchar(255) binary NOT NULL default '',
 549                         rev_timestamp char(14) binary NOT NULL default '',
 550                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 551                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 552                         rev_len int(8) unsigned,
 553                         rev_parent_id int(8) unsigned default NULL,
 554                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 555                         UNIQUE INDEX rev_id (rev_id),
 556                         INDEX rev_timestamp (rev_timestamp),
 557                         INDEX page_timestamp (rev_page,rev_timestamp),
 558                         INDEX user_timestamp (rev_user,rev_timestamp),
 559                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 560                         ) ENGINE=InnoDB", __METHOD__ );
 561
 562                 $this->output( wfTimestamp( TS_DB ) );
 563                 $this->output( "......Locking tables.\n" );
 564                 $this->db->query(
 565                         "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE",
 566                         __METHOD__
 567                 );
 568
 569                 $maxold = intval( $this->db->selectField( 'old', 'max(old_id)', '', __METHOD__ ) );
 570                 $this->output( wfTimestamp( TS_DB ) );
 571                 $this->output( "......maxold is {$maxold}\n" );
 572
 573                 $this->output( wfTimestamp( TS_DB ) );
 574                 global $wgLegacySchemaConversion;
 575                 if ( $wgLegacySchemaConversion ) {
 576                         // Create HistoryBlobCurStub entries.
 577                         // Text will be pulled from the leftover 'cur' table at runtime.
 578                         $this->output( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 579                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 580                         $cur_flags = "'object'";
 581                 } else {
 582                         // Copy all cur text in immediately: this may take longer but avoids
 583                         // having to keep an extra table around.
 584                         $this->output( "......Moving text from cur.\n" );
 585                         $cur_text = 'cur_text';
 586                         $cur_flags = "''";
 587                 }
 588                 $this->db->query(
 589                         "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user,
 590                                 old_user_text, old_timestamp, old_minor_edit, old_flags)
 591                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text,
 592                                 cur_timestamp, cur_minor_edit, $cur_flags
 593                         FROM $cur",
 594                         __METHOD__
 595                 );
 596
 597                 $this->output( wfTimestamp( TS_DB ) );
 598                 $this->output( "......Setting up revision table.\n" );
 599                 $this->db->query(
 600                         "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user,
 601                                 rev_user_text, rev_timestamp, rev_minor_edit)
 602                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 603                                 old_timestamp, old_minor_edit
 604                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 605                         __METHOD__
 606                 );
 607
 608                 $this->output( wfTimestamp( TS_DB ) );
 609                 $this->output( "......Setting up page table.\n" );
 610                 $this->db->query(
 611                         "INSERT INTO $page (page_id, page_namespace, page_title,
 612                                 page_restrictions, page_is_redirect, page_is_new, page_random,
 613                                 page_touched, page_latest, page_len)
 614                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions,
 615                                 cur_is_redirect, cur_is_new, cur_random, cur_touched, rev_id, LENGTH(cur_text)
 616                         FROM $cur,$revision
 617                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}",
 618                         __METHOD__
 619                 );
 620
 621                 $this->output( wfTimestamp( TS_DB ) );
 622                 $this->output( "......Unlocking tables.\n" );
 623                 $this->db->query( "UNLOCK TABLES", __METHOD__ );
 624
 625                 $this->output( wfTimestamp( TS_DB ) );
 626                 $this->output( "......Renaming old.\n" );
 627                 $this->db->query( "ALTER TABLE $old RENAME TO $text", __METHOD__ );
 628
 629                 $this->output( wfTimestamp( TS_DB ) );
 630                 $this->output( "...done.\n" );
 631         }
 632
 633         protected function doNamespaceSize() {
 634                 $tables = array(
 635                         'page' => 'page',
 636                         'archive' => 'ar',
 637                         'recentchanges' => 'rc',
 638                         'watchlist' => 'wl',
 639                         'querycache' => 'qc',
 640                         'logging' => 'log',
 641                 );
 642                 foreach ( $tables as $table => $prefix ) {
 643                         $field = $prefix . '_namespace';
 644
 645                         $tablename = $this->db->tableName( $table );
 646                         $result = $this->db->query( "SHOW COLUMNS FROM $tablename LIKE '$field'", __METHOD__ );
 647                         $info = $this->db->fetchObject( $result );
 648
 649                         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 650                                 $this->output( "...$field is already a full int ($info->Type).\n" );
 651                         } else {
 652                                 $this->output( "Promoting $field from $info->Type to int... " );
 653                                 $this->db->query( "ALTER TABLE $tablename MODIFY $field int NOT NULL", __METHOD__ );
 654                                 $this->output( "done.\n" );
 655                         }
 656                 }
 657         }
 658
 659         protected function doPagelinksUpdate() {
 660                 if ( $this->db->tableExists( 'pagelinks', __METHOD__ ) ) {
 661                         $this->output( "...already have pagelinks table.\n" );
 662
 663                         return;
 664                 }
 665
 666                 $this->applyPatch(
 667                         'patch-pagelinks.sql',
 668                         false,
 669                         'Converting links and brokenlinks tables to pagelinks'
 670                 );
 671
 672                 global $wgContLang;
 673                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 674                         if ( $ns == 0 ) {
 675                                 continue;
 676                         }
 677
 678                         $this->output( "Cleaning up broken links for namespace $ns... " );
 679                         $this->db->update( 'pagelinks',
 680                                 array(
 681                                         'pl_namespace' => $ns,
 682                                         "pl_title = TRIM(LEADING {$this->db->addQuotes( "$name:" )} FROM pl_title)",
 683                                 ),
 684                                 array(
 685                                         'pl_namespace' => 0,
 686                                         'pl_title' . $this->db->buildLike( "$name:", $this->db->anyString() ),
 687                                 ),
 688                                 __METHOD__
 689                         );
 690                         $this->output( "done.\n" );
 691                 }
 692         }
 693
 694         protected function doUserUniqueUpdate() {
 695                 if ( !$this->doTable( 'user' ) ) {
 696                         return true;
 697                 }
 698
 699                 $duper = new UserDupes( $this->db, array( $this, 'output' ) );
 700                 if ( $duper->hasUniqueIndex() ) {
 701                         $this->output( "...already have unique user_name index.\n" );
 702
 703                         return;
 704                 }
 705
 706                 if ( !$duper->clearDupes() ) {
 707                         $this->output( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 708                 }
 709                 $this->applyPatch( 'patch-user_nameindex.sql', false, "Adding unique index on user_name" );
 710         }
 711
 712         protected function doUserGroupsUpdate() {
 713                 if ( !$this->doTable( 'user_groups' ) ) {
 714                         return true;
 715                 }
 716
 717                 if ( $this->db->tableExists( 'user_groups', __METHOD__ ) ) {
 718                         $info = $this->db->fieldInfo( 'user_groups', 'ug_group' );
 719                         if ( $info->type() == 'int' ) {
 720                                 $oldug = $this->db->tableName( 'user_groups' );
 721                                 $newug = $this->db->tableName( 'user_groups_bogus' );
 722                                 $this->output( "user_groups table exists but is in bogus intermediate " .
 723                                         "format. Renaming to $newug... " );
 724                                 $this->db->query( "ALTER TABLE $oldug RENAME TO $newug", __METHOD__ );
 725                                 $this->output( "done.\n" );
 726
 727                                 $this->applyPatch( 'patch-user_groups.sql', false, "Re-adding fresh user_groups table" );
 728
 729                                 $this->output( "***\n" );
 730                                 $this->output( "*** WARNING: You will need to manually fix up user " .
 731                                         "permissions in the user_groups\n" );
 732                                 $this->output( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 733                                 $this->output( "***\n" );
 734                         } else {
 735                                 $this->output( "...user_groups table exists and is in current format.\n" );
 736                         }
 737
 738                         return;
 739                 }
 740
 741                 $this->applyPatch( 'patch-user_groups.sql', false, "Adding user_groups table" );
 742
 743                 if ( !$this->db->tableExists( 'user_rights', __METHOD__ ) ) {
 744                         if ( $this->db->fieldExists( 'user', 'user_rights', __METHOD__ ) ) {
 745                                 $this->applyPatch(
 746                                         'patch-user_rights.sql',
 747                                         false,
 748                                         'Upgrading from a 1.3 or older database? Breaking out user_rights for conversion'
 749                                 );
 750                         } else {
 751                                 $this->output( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 752                                 $this->output( "*** You may need to manually configure some sysops by manipulating\n" );
 753                                 $this->output( "*** the user_groups table.\n" );
 754
 755                                 return;
 756                         }
 757                 }
 758
 759                 $this->output( "Converting user_rights table to user_groups... " );
 760                 $result = $this->db->select( 'user_rights',
 761                         array( 'ur_user', 'ur_rights' ),
 762                         array( "ur_rights != ''" ),
 763                         __METHOD__ );
 764
 765                 foreach ( $result as $row ) {
 766                         $groups = array_unique(
 767                                 array_map( 'trim',
 768                                         explode( ',', $row->ur_rights ) ) );
 769
 770                         foreach ( $groups as $group ) {
 771                                 $this->db->insert( 'user_groups',
 772                                         array(
 773                                                 'ug_user' => $row->ur_user,
 774                                                 'ug_group' => $group ),
 775                                         __METHOD__ );
 776                         }
 777                 }
 778                 $this->output( "done.\n" );
 779         }
 780
 781         /**
 782          * Make sure wl_notificationtimestamp can be NULL,
 783          * and update old broken items.
 784          */
 785         protected function doWatchlistNull() {
 786                 $info = $this->db->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 787                 if ( !$info ) {
 788                         return;
 789                 }
 790                 if ( $info->isNullable() ) {
 791                         $this->output( "...wl_notificationtimestamp is already nullable.\n" );
 792
 793                         return;
 794                 }
 795
 796                 $this->applyPatch(
 797                         'patch-watchlist-null.sql',
 798                         false,
 799                         'Making wl_notificationtimestamp nullable'
 800                 );
 801         }
 802
 803         /**
 804          * Set page_random field to a random value where it is equals to 0.
 805          *
 806          * @see bug 3946
 807          */
 808         protected function doPageRandomUpdate() {
 809                 $page = $this->db->tableName( 'page' );
 810                 $this->db->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", __METHOD__ );
 811                 $rows = $this->db->affectedRows();
 812
 813                 if ( $rows ) {
 814                         $this->output( "Set page_random to a random value on $rows rows where it was set to 0\n" );
 815                 } else {
 816                         $this->output( "...no page_random rows needed to be set\n" );
 817                 }
 818         }
 819
 820         protected function doTemplatelinksUpdate() {
 821                 if ( $this->db->tableExists( 'templatelinks', __METHOD__ ) ) {
 822                         $this->output( "...templatelinks table already exists\n" );
 823
 824                         return;
 825                 }
 826
 827                 $this->applyPatch( 'patch-templatelinks.sql', false, "Creating templatelinks table" );
 828
 829                 $this->output( "Populating...\n" );
 830                 if ( wfGetLB()->getServerCount() > 1 ) {
 831                         // Slow, replication-friendly update
 832                         $res = $this->db->select( 'pagelinks', array( 'pl_from', 'pl_namespace', 'pl_title' ),
 833                                 array( 'pl_namespace' => NS_TEMPLATE ), __METHOD__ );
 834                         $count = 0;
 835                         foreach ( $res as $row ) {
 836                                 $count = ( $count + 1 ) % 100;
 837                                 if ( $count == 0 ) {
 838                                         wfWaitForSlaves();
 839                                 }
 840                                 $this->db->insert( 'templatelinks',
 841                                         array(
 842                                                 'tl_from' => $row->pl_from,
 843                                                 'tl_namespace' => $row->pl_namespace,
 844                                                 'tl_title' => $row->pl_title,
 845                                         ), __METHOD__
 846                                 );
 847                         }
 848                 } else {
 849                         // Fast update
 850                         $this->db->insertSelect( 'templatelinks', 'pagelinks',
 851                                 array(
 852                                         'tl_from' => 'pl_from',
 853                                         'tl_namespace' => 'pl_namespace',
 854                                         'tl_title' => 'pl_title'
 855                                 ), array(
 856                                         'pl_namespace' => 10
 857                                 ), __METHOD__
 858                         );
 859                 }
 860                 $this->output( "Done. Please run maintenance/refreshLinks.php for a more " .
 861                         "thorough templatelinks update.\n" );
 862         }
 863
 864         protected function doBacklinkingIndicesUpdate() {
 865                 if ( !$this->indexHasField( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 866                         !$this->indexHasField( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 867                         !$this->indexHasField( 'imagelinks', 'il_to', 'il_from' )
 868                 ) {
 869                         $this->applyPatch( 'patch-backlinkindexes.sql', false, "Updating backlinking indices" );
 870                 }
 871         }
 872
 873         /**
 874          * Adding page_restrictions table, obsoleting page.page_restrictions.
 875          * Migrating old restrictions to new table
 876          * -- Andrew Garrett, January 2007.
 877          */
 878         protected function doRestrictionsUpdate() {
 879                 if ( $this->db->tableExists( 'page_restrictions', __METHOD__ ) ) {
 880                         $this->output( "...page_restrictions table already exists.\n" );
 881
 882                         return;
 883                 }
 884
 885                 $this->applyPatch(
 886                         'patch-page_restrictions.sql',
 887                         false,
 888                         'Creating page_restrictions table (1/2)'
 889                 );
 890                 $this->applyPatch(
 891                         'patch-page_restrictions_sortkey.sql',
 892                         false,
 893                         'Creating page_restrictions table (2/2)'
 894                 );
 895                 $this->output( "done.\n" );
 896
 897                 $this->output( "Migrating old restrictions to new table...\n" );
 898                 $task = $this->maintenance->runChild( 'UpdateRestrictions' );
 899                 $task->execute();
 900         }
 901
 902         protected function doCategorylinksIndicesUpdate() {
 903                 if ( !$this->indexHasField( 'categorylinks', 'cl_sortkey', 'cl_from' ) ) {
 904                         $this->applyPatch( 'patch-categorylinksindex.sql', false, "Updating categorylinks Indices" );
 905                 }
 906         }
 907
 908         protected function doCategoryPopulation() {
 909                 if ( $this->updateRowExists( 'populate category' ) ) {
 910                         $this->output( "...category table already populated.\n" );
 911
 912                         return;
 913                 }
 914
 915                 $this->output(
 916                         "Populating category table, printing progress markers. " .
 917                         "For large databases, you\n" .
 918                         "may want to hit Ctrl-C and do this manually with maintenance/\n" .
 919                         "populateCategory.php.\n"
 920                 );
 921                 $task = $this->maintenance->runChild( 'PopulateCategory' );
 922                 $task->execute();
 923                 $this->output( "Done populating category table.\n" );
 924         }
 925
 926         protected function doPopulateParentId() {
 927                 if ( !$this->updateRowExists( 'populate rev_parent_id' ) ) {
 928                         $this->output(
 929                                 "Populating rev_parent_id fields, printing progress markers. For large\n" .
 930                                 "databases, you may want to hit Ctrl-C and do this manually with\n" .
 931                                 "maintenance/populateParentId.php.\n" );
 932
 933                         $task = $this->maintenance->runChild( 'PopulateParentId' );
 934                         $task->execute();
 935                 }
 936         }
 937
 938         protected function doMaybeProfilingMemoryUpdate() {
 939                 if ( !$this->doTable( 'profiling' ) ) {
 940                         return true;
 941                 }
 942
 943                 if ( !$this->db->tableExists( 'profiling', __METHOD__ ) ) {
 944                         return true;
 945                 } elseif ( $this->db->fieldExists( 'profiling', 'pf_memory', __METHOD__ ) ) {
 946                         $this->output( "...profiling table has pf_memory field.\n" );
 947
 948                         return true;
 949                 }
 950
 951                 return $this->applyPatch(
 952                         'patch-profiling-memory.sql',
 953                         false,
 954                         'Adding pf_memory field to table profiling'
 955                 );
 956         }
 957
 958         protected function doFilearchiveIndicesUpdate() {
 959                 $info = $this->db->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 960                 if ( !$info ) {
 961                         $this->applyPatch( 'patch-filearchive-user-index.sql', false, "Updating filearchive indices" );
 962                 }
 963
 964                 return true;
 965         }
 966
 967         protected function doUniquePlTlIl() {
 968                 $info = $this->db->indexInfo( 'pagelinks', 'pl_namespace' );
 969                 if ( is_array( $info ) && !$info[0]->Non_unique ) {
 970                         $this->output( "...pl_namespace, tl_namespace, il_to indices are already UNIQUE.\n" );
 971
 972                         return true;
 973                 }
 974                 if ( $this->skipSchema ) {
 975                         $this->output( "...skipping schema change (making pl_namespace, tl_namespace " .
 976                                 "and il_to indices UNIQUE).\n" );
 977
 978                         return false;
 979                 }
 980
 981                 return $this->applyPatch(
 982                         'patch-pl-tl-il-unique.sql',
 983                         false,
 984                         'Making pl_namespace, tl_namespace and il_to indices UNIQUE'
 985                 );
 986         }
 987
 988         protected function doUpdateMimeMinorField() {
 989                 if ( $this->updateRowExists( 'mime_minor_length' ) ) {
 990                         $this->output( "...*_mime_minor fields are already long enough.\n" );
 991
 992                         return;
 993                 }
 994
 995                 $this->applyPatch(
 996                         'patch-mime_minor_length.sql',
 997                         false,
 998                         'Altering all *_mime_minor fields to 100 bytes in size'
 999                 );
1000         }
1001
1002         protected function doClFieldsUpdate() {
1003                 if ( $this->updateRowExists( 'cl_fields_update' ) ) {
1004                         $this->output( "...categorylinks up-to-date.\n" );
1005
1006                         return;
1007                 }
1008
1009                 $this->applyPatch(
1010                         'patch-categorylinks-better-collation2.sql',
1011                         false,
1012                         'Updating categorylinks (again)'
1013                 );
1014         }
1015
1016         protected function doLangLinksLengthUpdate() {
1017                 $langlinks = $this->db->tableName( 'langlinks' );
1018                 $res = $this->db->query( "SHOW COLUMNS FROM $langlinks LIKE 'll_lang'" );
1019                 $row = $this->db->fetchObject( $res );
1020
1021                 if ( $row && $row->Type == "varbinary(10)" ) {
1022                         $this->applyPatch(
1023                                 'patch-langlinks-ll_lang-20.sql',
1024                                 false,
1025                                 'Updating length of ll_lang in langlinks'
1026                         );
1027                 } else {
1028                         $this->output( "...ll_lang is up-to-date.\n" );
1029                 }
1030         }
1031
1032         protected function doUserNewTalkTimestampNotNull() {
1033                 if ( !$this->doTable( 'user_newtalk' ) ) {
1034                         return true;
1035                 }
1036
1037                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_last_timestamp' );
1038                 if ( $info === false ) {
1039                         return;
1040                 }
1041                 if ( $info->isNullable() ) {
1042                         $this->output( "...user_last_timestamp is already nullable.\n" );
1043
1044                         return;
1045                 }
1046
1047                 $this->applyPatch(
1048                         'patch-user-newtalk-timestamp-null.sql',
1049                         false,
1050                         'Making user_last_timestamp nullable'
1051                 );
1052         }
1053
1054         protected function doIwlinksIndexNonUnique() {
1055                 $info = $this->db->indexInfo( 'iwlinks', 'iwl_prefix_title_from' );
1056                 if ( is_array( $info ) && $info[0]->Non_unique ) {
1057                         $this->output( "...iwl_prefix_title_from index is already non-UNIQUE.\n" );
1058
1059                         return true;
1060                 }
1061                 if ( $this->skipSchema ) {
1062                         $this->output( "...skipping schema change (making iwl_prefix_title_from index non-UNIQUE).\n" );
1063
1064                         return false;
1065                 }
1066
1067                 return $this->applyPatch(
1068                         'patch-iwl_prefix_title_from-non-unique.sql',
1069                         false,
1070                         'Making iwl_prefix_title_from index non-UNIQUE'
1071                 );
1072         }
1073
1074         protected function doUserNewTalkUseridUnsigned() {
1075                 if ( !$this->doTable( 'user_newtalk' ) ) {
1076                         return true;
1077                 }
1078
1079                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_id' );
1080                 if ( $info === false ) {
1081                         return true;
1082                 }
1083                 if ( $info->isUnsigned() ) {
1084                         $this->output( "...user_id is already unsigned int.\n" );
1085
1086                         return true;
1087                 }
1088
1089                 return $this->applyPatch(
1090                         'patch-user-newtalk-userid-unsigned.sql',
1091                         false,
1092                         'Making user_id unsigned int'
1093                 );
1094         }
1095 }