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                         array( 'addTable', 'bot_passwords', 'patch-bot_passwords.sql' ),
 282                 );
 283         }
 284
 285         /**
 286          * 1.4 betas were missing the 'binary' marker from logging.log_title,
 287          * which causes a collation mismatch error on joins in MySQL 4.1.
 288          *
 289          * @param string $table Table name
 290          * @param string $field Field name to check
 291          * @param string $patchFile Path to the patch to correct the field
 292          * @return bool
 293          */
 294         protected function checkBin( $table, $field, $patchFile ) {
 295                 if ( !$this->doTable( $table ) ) {
 296                         return true;
 297                 }
 298
 299                 /** @var MySQLField $fieldInfo */
 300                 $fieldInfo = $this->db->fieldInfo( $table, $field );
 301                 if ( $fieldInfo->isBinary() ) {
 302                         $this->output( "...$table table has correct $field encoding.\n" );
 303                 } else {
 304                         $this->applyPatch( $patchFile, false, "Fixing $field encoding on $table table" );
 305                 }
 306         }
 307
 308         /**
 309          * Check whether an index contain a field
 310          *
 311          * @param string $table Table name
 312          * @param string $index Index name to check
 313          * @param string $field Field that should be in the index
 314          * @return bool
 315          */
 316         protected function indexHasField( $table, $index, $field ) {
 317                 if ( !$this->doTable( $table ) ) {
 318                         return true;
 319                 }
 320
 321                 $info = $this->db->indexInfo( $table, $index, __METHOD__ );
 322                 if ( $info ) {
 323                         foreach ( $info as $row ) {
 324                                 if ( $row->Column_name == $field ) {
 325                                         $this->output( "...index $index on table $table includes field $field.\n" );
 326
 327                                         return true;
 328                                 }
 329                         }
 330                 }
 331                 $this->output( "...index $index on table $table has no field $field; added.\n" );
 332
 333                 return false;
 334         }
 335
 336         /**
 337          * Check that interwiki table exists; if it doesn't source it
 338          */
 339         protected function doInterwikiUpdate() {
 340                 global $IP;
 341
 342                 if ( !$this->doTable( 'interwiki' ) ) {
 343                         return true;
 344                 }
 345
 346                 if ( $this->db->tableExists( "interwiki", __METHOD__ ) ) {
 347                         $this->output( "...already have interwiki table\n" );
 348
 349                         return;
 350                 }
 351
 352                 $this->applyPatch( 'patch-interwiki.sql', false, 'Creating interwiki table' );
 353                 $this->applyPatch(
 354                         "$IP/maintenance/interwiki.sql",
 355                         true,
 356                         'Adding default interwiki definitions'
 357                 );
 358         }
 359
 360         /**
 361          * Check that proper indexes are in place
 362          */
 363         protected function doIndexUpdate() {
 364                 $meta = $this->db->fieldInfo( 'recentchanges', 'rc_timestamp' );
 365                 if ( $meta === false ) {
 366                         throw new MWException( 'Missing rc_timestamp field of recentchanges table. Should not happen.' );
 367                 }
 368                 if ( $meta->isMultipleKey() ) {
 369                         $this->output( "...indexes seem up to 20031107 standards.\n" );
 370
 371                         return;
 372                 }
 373
 374                 $this->applyPatch( 'patch-indexes.sql', true, "Updating indexes to 20031107" );
 375         }
 376
 377         protected function doOldLinksUpdate() {
 378                 $cl = $this->maintenance->runChild( 'ConvertLinks' );
 379                 $cl->execute();
 380         }
 381
 382         protected function doFixAncientImagelinks() {
 383                 $info = $this->db->fieldInfo( 'imagelinks', 'il_from' );
 384                 if ( !$info || $info->type() !== 'string' ) {
 385                         $this->output( "...il_from OK\n" );
 386
 387                         return;
 388                 }
 389
 390                 $applied = $this->applyPatch(
 391                         'patch-fix-il_from.sql',
 392                         false,
 393                         'Fixing ancient broken imagelinks table.'
 394                 );
 395
 396                 if ( $applied ) {
 397                         $this->output( "NOTE: you will have to run maintenance/refreshLinks.php after this." );
 398                 }
 399         }
 400
 401         /**
 402          * Check if we need to add talk page rows to the watchlist
 403          */
 404         function doWatchlistUpdate() {
 405                 $talk = $this->db->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', __METHOD__ );
 406                 $nontalk = $this->db->selectField(
 407                         'watchlist',
 408                         'count(*)',
 409                         'NOT (wl_namespace & 1)',
 410                         __METHOD__
 411                 );
 412                 if ( $talk == $nontalk ) {
 413                         $this->output( "...watchlist talk page rows already present.\n" );
 414
 415                         return;
 416                 }
 417
 418                 $this->output( "Adding missing watchlist talk page rows... " );
 419                 $this->db->insertSelect( 'watchlist', 'watchlist',
 420                         array(
 421                                 'wl_user' => 'wl_user',
 422                                 'wl_namespace' => 'wl_namespace | 1',
 423                                 'wl_title' => 'wl_title',
 424                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 425                         ), array( 'NOT (wl_namespace & 1)' ), __METHOD__, 'IGNORE' );
 426                 $this->output( "done.\n" );
 427
 428                 $this->output( "Adding missing watchlist subject page rows... " );
 429                 $this->db->insertSelect( 'watchlist', 'watchlist',
 430                         array(
 431                                 'wl_user' => 'wl_user',
 432                                 'wl_namespace' => 'wl_namespace & ~1',
 433                                 'wl_title' => 'wl_title',
 434                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 435                         ), array( 'wl_namespace & 1' ), __METHOD__, 'IGNORE' );
 436                 $this->output( "done.\n" );
 437         }
 438
 439         function doSchemaRestructuring() {
 440                 if ( $this->db->tableExists( 'page', __METHOD__ ) ) {
 441                         $this->output( "...page table already exists.\n" );
 442
 443                         return;
 444                 }
 445
 446                 $this->output( "...converting from cur/old to page/revision/text DB structure.\n" );
 447                 $this->output( wfTimestamp( TS_DB ) );
 448                 $this->output( "......checking for duplicate entries.\n" );
 449
 450                 list( $cur, $old, $page, $revision, $text ) = $this->db->tableNamesN(
 451                         'cur',
 452                         'old',
 453                         'page',
 454                         'revision',
 455                         'text'
 456                 );
 457
 458                 $rows = $this->db->query( "
 459                         SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 460                         FROM $cur
 461                         GROUP BY cur_title, cur_namespace
 462                         HAVING c>1",
 463                         __METHOD__
 464                 );
 465
 466                 if ( $rows->numRows() > 0 ) {
 467                         $this->output( wfTimestamp( TS_DB ) );
 468                         $this->output( "......<b>Found duplicate entries</b>\n" );
 469                         $this->output( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 470                         $duplicate = array();
 471                         foreach ( $rows as $row ) {
 472                                 if ( !isset( $duplicate[$row->cur_namespace] ) ) {
 473                                         $duplicate[$row->cur_namespace] = array();
 474                                 }
 475
 476                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 477                                 $this->output( sprintf(
 478                                         "      %-60s %3s %5s\n",
 479                                         $row->cur_title, $row->cur_namespace,
 480                                         $row->c
 481                                 ) );
 482                         }
 483                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 484                         $firstCond = true;
 485                         foreach ( $duplicate as $ns => $titles ) {
 486                                 if ( $firstCond ) {
 487                                         $firstCond = false;
 488                                 } else {
 489                                         $sql .= ' OR ';
 490                                 }
 491                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 492                                 $first = true;
 493                                 foreach ( $titles as $t ) {
 494                                         if ( $first ) {
 495                                                 $sql .= $this->db->addQuotes( $t );
 496                                                 $first = false;
 497                                         } else {
 498                                                 $sql .= ', ' . $this->db->addQuotes( $t );
 499                                         }
 500                                 }
 501                                 $sql .= ") ) \n";
 502                         }
 503                         # By sorting descending, the most recent entry will be the first in the list.
 504                         # All following entries will be deleted by the next while-loop.
 505                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 506
 507                         $rows = $this->db->query( $sql, __METHOD__ );
 508
 509                         $prev_title = $prev_namespace = false;
 510                         $deleteId = array();
 511
 512                         foreach ( $rows as $row ) {
 513                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 514                                         $deleteId[] = $row->cur_id;
 515                                 }
 516                                 $prev_title = $row->cur_title;
 517                                 $prev_namespace = $row->cur_namespace;
 518                         }
 519                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . join( ',', $deleteId ) . ')';
 520                         $this->db->query( $sql, __METHOD__ );
 521                         $this->output( wfTimestamp( TS_DB ) );
 522                         $this->output( "......<b>Deleted</b> " . $this->db->affectedRows() . " records.\n" );
 523                 }
 524
 525                 $this->output( wfTimestamp( TS_DB ) );
 526                 $this->output( "......Creating tables.\n" );
 527                 $this->db->query( "CREATE TABLE $page (
 528                         page_id int(8) unsigned NOT NULL auto_increment,
 529                         page_namespace int NOT NULL,
 530                         page_title varchar(255) binary NOT NULL,
 531                         page_restrictions tinyblob NOT NULL,
 532                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 533                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 534                         page_random real unsigned NOT NULL,
 535                         page_touched char(14) binary NOT NULL default '',
 536                         page_latest int(8) unsigned NOT NULL,
 537                         page_len int(8) unsigned NOT NULL,
 538
 539                         PRIMARY KEY page_id (page_id),
 540                         UNIQUE INDEX name_title (page_namespace,page_title),
 541                         INDEX (page_random),
 542                         INDEX (page_len)
 543                         ) ENGINE=InnoDB", __METHOD__ );
 544                 $this->db->query( "CREATE TABLE $revision (
 545                         rev_id int(8) unsigned NOT NULL auto_increment,
 546                         rev_page int(8) unsigned NOT NULL,
 547                         rev_comment tinyblob NOT NULL,
 548                         rev_user int(5) unsigned NOT NULL default '0',
 549                         rev_user_text varchar(255) binary NOT NULL default '',
 550                         rev_timestamp char(14) binary NOT NULL default '',
 551                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 552                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 553                         rev_len int(8) unsigned,
 554                         rev_parent_id int(8) unsigned default NULL,
 555                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 556                         UNIQUE INDEX rev_id (rev_id),
 557                         INDEX rev_timestamp (rev_timestamp),
 558                         INDEX page_timestamp (rev_page,rev_timestamp),
 559                         INDEX user_timestamp (rev_user,rev_timestamp),
 560                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 561                         ) ENGINE=InnoDB", __METHOD__ );
 562
 563                 $this->output( wfTimestamp( TS_DB ) );
 564                 $this->output( "......Locking tables.\n" );
 565                 $this->db->query(
 566                         "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE",
 567                         __METHOD__
 568                 );
 569
 570                 $maxold = intval( $this->db->selectField( 'old', 'max(old_id)', '', __METHOD__ ) );
 571                 $this->output( wfTimestamp( TS_DB ) );
 572                 $this->output( "......maxold is {$maxold}\n" );
 573
 574                 $this->output( wfTimestamp( TS_DB ) );
 575                 global $wgLegacySchemaConversion;
 576                 if ( $wgLegacySchemaConversion ) {
 577                         // Create HistoryBlobCurStub entries.
 578                         // Text will be pulled from the leftover 'cur' table at runtime.
 579                         $this->output( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 580                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 581                         $cur_flags = "'object'";
 582                 } else {
 583                         // Copy all cur text in immediately: this may take longer but avoids
 584                         // having to keep an extra table around.
 585                         $this->output( "......Moving text from cur.\n" );
 586                         $cur_text = 'cur_text';
 587                         $cur_flags = "''";
 588                 }
 589                 $this->db->query(
 590                         "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user,
 591                                 old_user_text, old_timestamp, old_minor_edit, old_flags)
 592                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text,
 593                                 cur_timestamp, cur_minor_edit, $cur_flags
 594                         FROM $cur",
 595                         __METHOD__
 596                 );
 597
 598                 $this->output( wfTimestamp( TS_DB ) );
 599                 $this->output( "......Setting up revision table.\n" );
 600                 $this->db->query(
 601                         "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user,
 602                                 rev_user_text, rev_timestamp, rev_minor_edit)
 603                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 604                                 old_timestamp, old_minor_edit
 605                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 606                         __METHOD__
 607                 );
 608
 609                 $this->output( wfTimestamp( TS_DB ) );
 610                 $this->output( "......Setting up page table.\n" );
 611                 $this->db->query(
 612                         "INSERT INTO $page (page_id, page_namespace, page_title,
 613                                 page_restrictions, page_is_redirect, page_is_new, page_random,
 614                                 page_touched, page_latest, page_len)
 615                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions,
 616                                 cur_is_redirect, cur_is_new, cur_random, cur_touched, rev_id, LENGTH(cur_text)
 617                         FROM $cur,$revision
 618                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}",
 619                         __METHOD__
 620                 );
 621
 622                 $this->output( wfTimestamp( TS_DB ) );
 623                 $this->output( "......Unlocking tables.\n" );
 624                 $this->db->query( "UNLOCK TABLES", __METHOD__ );
 625
 626                 $this->output( wfTimestamp( TS_DB ) );
 627                 $this->output( "......Renaming old.\n" );
 628                 $this->db->query( "ALTER TABLE $old RENAME TO $text", __METHOD__ );
 629
 630                 $this->output( wfTimestamp( TS_DB ) );
 631                 $this->output( "...done.\n" );
 632         }
 633
 634         protected function doNamespaceSize() {
 635                 $tables = array(
 636                         'page' => 'page',
 637                         'archive' => 'ar',
 638                         'recentchanges' => 'rc',
 639                         'watchlist' => 'wl',
 640                         'querycache' => 'qc',
 641                         'logging' => 'log',
 642                 );
 643                 foreach ( $tables as $table => $prefix ) {
 644                         $field = $prefix . '_namespace';
 645
 646                         $tablename = $this->db->tableName( $table );
 647                         $result = $this->db->query( "SHOW COLUMNS FROM $tablename LIKE '$field'", __METHOD__ );
 648                         $info = $this->db->fetchObject( $result );
 649
 650                         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 651                                 $this->output( "...$field is already a full int ($info->Type).\n" );
 652                         } else {
 653                                 $this->output( "Promoting $field from $info->Type to int... " );
 654                                 $this->db->query( "ALTER TABLE $tablename MODIFY $field int NOT NULL", __METHOD__ );
 655                                 $this->output( "done.\n" );
 656                         }
 657                 }
 658         }
 659
 660         protected function doPagelinksUpdate() {
 661                 if ( $this->db->tableExists( 'pagelinks', __METHOD__ ) ) {
 662                         $this->output( "...already have pagelinks table.\n" );
 663
 664                         return;
 665                 }
 666
 667                 $this->applyPatch(
 668                         'patch-pagelinks.sql',
 669                         false,
 670                         'Converting links and brokenlinks tables to pagelinks'
 671                 );
 672
 673                 global $wgContLang;
 674                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 675                         if ( $ns == 0 ) {
 676                                 continue;
 677                         }
 678
 679                         $this->output( "Cleaning up broken links for namespace $ns... " );
 680                         $this->db->update( 'pagelinks',
 681                                 array(
 682                                         'pl_namespace' => $ns,
 683                                         "pl_title = TRIM(LEADING {$this->db->addQuotes( "$name:" )} FROM pl_title)",
 684                                 ),
 685                                 array(
 686                                         'pl_namespace' => 0,
 687                                         'pl_title' . $this->db->buildLike( "$name:", $this->db->anyString() ),
 688                                 ),
 689                                 __METHOD__
 690                         );
 691                         $this->output( "done.\n" );
 692                 }
 693         }
 694
 695         protected function doUserUniqueUpdate() {
 696                 if ( !$this->doTable( 'user' ) ) {
 697                         return true;
 698                 }
 699
 700                 $duper = new UserDupes( $this->db, array( $this, 'output' ) );
 701                 if ( $duper->hasUniqueIndex() ) {
 702                         $this->output( "...already have unique user_name index.\n" );
 703
 704                         return;
 705                 }
 706
 707                 if ( !$duper->clearDupes() ) {
 708                         $this->output( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 709                 }
 710                 $this->applyPatch( 'patch-user_nameindex.sql', false, "Adding unique index on user_name" );
 711         }
 712
 713         protected function doUserGroupsUpdate() {
 714                 if ( !$this->doTable( 'user_groups' ) ) {
 715                         return true;
 716                 }
 717
 718                 if ( $this->db->tableExists( 'user_groups', __METHOD__ ) ) {
 719                         $info = $this->db->fieldInfo( 'user_groups', 'ug_group' );
 720                         if ( $info->type() == 'int' ) {
 721                                 $oldug = $this->db->tableName( 'user_groups' );
 722                                 $newug = $this->db->tableName( 'user_groups_bogus' );
 723                                 $this->output( "user_groups table exists but is in bogus intermediate " .
 724                                         "format. Renaming to $newug... " );
 725                                 $this->db->query( "ALTER TABLE $oldug RENAME TO $newug", __METHOD__ );
 726                                 $this->output( "done.\n" );
 727
 728                                 $this->applyPatch( 'patch-user_groups.sql', false, "Re-adding fresh user_groups table" );
 729
 730                                 $this->output( "***\n" );
 731                                 $this->output( "*** WARNING: You will need to manually fix up user " .
 732                                         "permissions in the user_groups\n" );
 733                                 $this->output( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 734                                 $this->output( "***\n" );
 735                         } else {
 736                                 $this->output( "...user_groups table exists and is in current format.\n" );
 737                         }
 738
 739                         return;
 740                 }
 741
 742                 $this->applyPatch( 'patch-user_groups.sql', false, "Adding user_groups table" );
 743
 744                 if ( !$this->db->tableExists( 'user_rights', __METHOD__ ) ) {
 745                         if ( $this->db->fieldExists( 'user', 'user_rights', __METHOD__ ) ) {
 746                                 $this->applyPatch(
 747                                         'patch-user_rights.sql',
 748                                         false,
 749                                         'Upgrading from a 1.3 or older database? Breaking out user_rights for conversion'
 750                                 );
 751                         } else {
 752                                 $this->output( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 753                                 $this->output( "*** You may need to manually configure some sysops by manipulating\n" );
 754                                 $this->output( "*** the user_groups table.\n" );
 755
 756                                 return;
 757                         }
 758                 }
 759
 760                 $this->output( "Converting user_rights table to user_groups... " );
 761                 $result = $this->db->select( 'user_rights',
 762                         array( 'ur_user', 'ur_rights' ),
 763                         array( "ur_rights != ''" ),
 764                         __METHOD__ );
 765
 766                 foreach ( $result as $row ) {
 767                         $groups = array_unique(
 768                                 array_map( 'trim',
 769                                         explode( ',', $row->ur_rights ) ) );
 770
 771                         foreach ( $groups as $group ) {
 772                                 $this->db->insert( 'user_groups',
 773                                         array(
 774                                                 'ug_user' => $row->ur_user,
 775                                                 'ug_group' => $group ),
 776                                         __METHOD__ );
 777                         }
 778                 }
 779                 $this->output( "done.\n" );
 780         }
 781
 782         /**
 783          * Make sure wl_notificationtimestamp can be NULL,
 784          * and update old broken items.
 785          */
 786         protected function doWatchlistNull() {
 787                 $info = $this->db->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 788                 if ( !$info ) {
 789                         return;
 790                 }
 791                 if ( $info->isNullable() ) {
 792                         $this->output( "...wl_notificationtimestamp is already nullable.\n" );
 793
 794                         return;
 795                 }
 796
 797                 $this->applyPatch(
 798                         'patch-watchlist-null.sql',
 799                         false,
 800                         'Making wl_notificationtimestamp nullable'
 801                 );
 802         }
 803
 804         /**
 805          * Set page_random field to a random value where it is equals to 0.
 806          *
 807          * @see bug 3946
 808          */
 809         protected function doPageRandomUpdate() {
 810                 $page = $this->db->tableName( 'page' );
 811                 $this->db->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", __METHOD__ );
 812                 $rows = $this->db->affectedRows();
 813
 814                 if ( $rows ) {
 815                         $this->output( "Set page_random to a random value on $rows rows where it was set to 0\n" );
 816                 } else {
 817                         $this->output( "...no page_random rows needed to be set\n" );
 818                 }
 819         }
 820
 821         protected function doTemplatelinksUpdate() {
 822                 if ( $this->db->tableExists( 'templatelinks', __METHOD__ ) ) {
 823                         $this->output( "...templatelinks table already exists\n" );
 824
 825                         return;
 826                 }
 827
 828                 $this->applyPatch( 'patch-templatelinks.sql', false, "Creating templatelinks table" );
 829
 830                 $this->output( "Populating...\n" );
 831                 if ( wfGetLB()->getServerCount() > 1 ) {
 832                         // Slow, replication-friendly update
 833                         $res = $this->db->select( 'pagelinks', array( 'pl_from', 'pl_namespace', 'pl_title' ),
 834                                 array( 'pl_namespace' => NS_TEMPLATE ), __METHOD__ );
 835                         $count = 0;
 836                         foreach ( $res as $row ) {
 837                                 $count = ( $count + 1 ) % 100;
 838                                 if ( $count == 0 ) {
 839                                         wfWaitForSlaves();
 840                                 }
 841                                 $this->db->insert( 'templatelinks',
 842                                         array(
 843                                                 'tl_from' => $row->pl_from,
 844                                                 'tl_namespace' => $row->pl_namespace,
 845                                                 'tl_title' => $row->pl_title,
 846                                         ), __METHOD__
 847                                 );
 848                         }
 849                 } else {
 850                         // Fast update
 851                         $this->db->insertSelect( 'templatelinks', 'pagelinks',
 852                                 array(
 853                                         'tl_from' => 'pl_from',
 854                                         'tl_namespace' => 'pl_namespace',
 855                                         'tl_title' => 'pl_title'
 856                                 ), array(
 857                                         'pl_namespace' => 10
 858                                 ), __METHOD__
 859                         );
 860                 }
 861                 $this->output( "Done. Please run maintenance/refreshLinks.php for a more " .
 862                         "thorough templatelinks update.\n" );
 863         }
 864
 865         protected function doBacklinkingIndicesUpdate() {
 866                 if ( !$this->indexHasField( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 867                         !$this->indexHasField( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 868                         !$this->indexHasField( 'imagelinks', 'il_to', 'il_from' )
 869                 ) {
 870                         $this->applyPatch( 'patch-backlinkindexes.sql', false, "Updating backlinking indices" );
 871                 }
 872         }
 873
 874         /**
 875          * Adding page_restrictions table, obsoleting page.page_restrictions.
 876          * Migrating old restrictions to new table
 877          * -- Andrew Garrett, January 2007.
 878          */
 879         protected function doRestrictionsUpdate() {
 880                 if ( $this->db->tableExists( 'page_restrictions', __METHOD__ ) ) {
 881                         $this->output( "...page_restrictions table already exists.\n" );
 882
 883                         return;
 884                 }
 885
 886                 $this->applyPatch(
 887                         'patch-page_restrictions.sql',
 888                         false,
 889                         'Creating page_restrictions table (1/2)'
 890                 );
 891                 $this->applyPatch(
 892                         'patch-page_restrictions_sortkey.sql',
 893                         false,
 894                         'Creating page_restrictions table (2/2)'
 895                 );
 896                 $this->output( "done.\n" );
 897
 898                 $this->output( "Migrating old restrictions to new table...\n" );
 899                 $task = $this->maintenance->runChild( 'UpdateRestrictions' );
 900                 $task->execute();
 901         }
 902
 903         protected function doCategorylinksIndicesUpdate() {
 904                 if ( !$this->indexHasField( 'categorylinks', 'cl_sortkey', 'cl_from' ) ) {
 905                         $this->applyPatch( 'patch-categorylinksindex.sql', false, "Updating categorylinks Indices" );
 906                 }
 907         }
 908
 909         protected function doCategoryPopulation() {
 910                 if ( $this->updateRowExists( 'populate category' ) ) {
 911                         $this->output( "...category table already populated.\n" );
 912
 913                         return;
 914                 }
 915
 916                 $this->output(
 917                         "Populating category table, printing progress markers. " .
 918                         "For large databases, you\n" .
 919                         "may want to hit Ctrl-C and do this manually with maintenance/\n" .
 920                         "populateCategory.php.\n"
 921                 );
 922                 $task = $this->maintenance->runChild( 'PopulateCategory' );
 923                 $task->execute();
 924                 $this->output( "Done populating category table.\n" );
 925         }
 926
 927         protected function doPopulateParentId() {
 928                 if ( !$this->updateRowExists( 'populate rev_parent_id' ) ) {
 929                         $this->output(
 930                                 "Populating rev_parent_id fields, printing progress markers. For large\n" .
 931                                 "databases, you may want to hit Ctrl-C and do this manually with\n" .
 932                                 "maintenance/populateParentId.php.\n" );
 933
 934                         $task = $this->maintenance->runChild( 'PopulateParentId' );
 935                         $task->execute();
 936                 }
 937         }
 938
 939         protected function doMaybeProfilingMemoryUpdate() {
 940                 if ( !$this->doTable( 'profiling' ) ) {
 941                         return true;
 942                 }
 943
 944                 if ( !$this->db->tableExists( 'profiling', __METHOD__ ) ) {
 945                         return true;
 946                 } elseif ( $this->db->fieldExists( 'profiling', 'pf_memory', __METHOD__ ) ) {
 947                         $this->output( "...profiling table has pf_memory field.\n" );
 948
 949                         return true;
 950                 }
 951
 952                 return $this->applyPatch(
 953                         'patch-profiling-memory.sql',
 954                         false,
 955                         'Adding pf_memory field to table profiling'
 956                 );
 957         }
 958
 959         protected function doFilearchiveIndicesUpdate() {
 960                 $info = $this->db->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 961                 if ( !$info ) {
 962                         $this->applyPatch( 'patch-filearchive-user-index.sql', false, "Updating filearchive indices" );
 963                 }
 964
 965                 return true;
 966         }
 967
 968         protected function doUniquePlTlIl() {
 969                 $info = $this->db->indexInfo( 'pagelinks', 'pl_namespace' );
 970                 if ( is_array( $info ) && !$info[0]->Non_unique ) {
 971                         $this->output( "...pl_namespace, tl_namespace, il_to indices are already UNIQUE.\n" );
 972
 973                         return true;
 974                 }
 975                 if ( $this->skipSchema ) {
 976                         $this->output( "...skipping schema change (making pl_namespace, tl_namespace " .
 977                                 "and il_to indices UNIQUE).\n" );
 978
 979                         return false;
 980                 }
 981
 982                 return $this->applyPatch(
 983                         'patch-pl-tl-il-unique.sql',
 984                         false,
 985                         'Making pl_namespace, tl_namespace and il_to indices UNIQUE'
 986                 );
 987         }
 988
 989         protected function doUpdateMimeMinorField() {
 990                 if ( $this->updateRowExists( 'mime_minor_length' ) ) {
 991                         $this->output( "...*_mime_minor fields are already long enough.\n" );
 992
 993                         return;
 994                 }
 995
 996                 $this->applyPatch(
 997                         'patch-mime_minor_length.sql',
 998                         false,
 999                         'Altering all *_mime_minor fields to 100 bytes in size'
1000                 );
1001         }
1002
1003         protected function doClFieldsUpdate() {
1004                 if ( $this->updateRowExists( 'cl_fields_update' ) ) {
1005                         $this->output( "...categorylinks up-to-date.\n" );
1006
1007                         return;
1008                 }
1009
1010                 $this->applyPatch(
1011                         'patch-categorylinks-better-collation2.sql',
1012                         false,
1013                         'Updating categorylinks (again)'
1014                 );
1015         }
1016
1017         protected function doLangLinksLengthUpdate() {
1018                 $langlinks = $this->db->tableName( 'langlinks' );
1019                 $res = $this->db->query( "SHOW COLUMNS FROM $langlinks LIKE 'll_lang'" );
1020                 $row = $this->db->fetchObject( $res );
1021
1022                 if ( $row && $row->Type == "varbinary(10)" ) {
1023                         $this->applyPatch(
1024                                 'patch-langlinks-ll_lang-20.sql',
1025                                 false,
1026                                 'Updating length of ll_lang in langlinks'
1027                         );
1028                 } else {
1029                         $this->output( "...ll_lang is up-to-date.\n" );
1030                 }
1031         }
1032
1033         protected function doUserNewTalkTimestampNotNull() {
1034                 if ( !$this->doTable( 'user_newtalk' ) ) {
1035                         return true;
1036                 }
1037
1038                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_last_timestamp' );
1039                 if ( $info === false ) {
1040                         return;
1041                 }
1042                 if ( $info->isNullable() ) {
1043                         $this->output( "...user_last_timestamp is already nullable.\n" );
1044
1045                         return;
1046                 }
1047
1048                 $this->applyPatch(
1049                         'patch-user-newtalk-timestamp-null.sql',
1050                         false,
1051                         'Making user_last_timestamp nullable'
1052                 );
1053         }
1054
1055         protected function doIwlinksIndexNonUnique() {
1056                 $info = $this->db->indexInfo( 'iwlinks', 'iwl_prefix_title_from' );
1057                 if ( is_array( $info ) && $info[0]->Non_unique ) {
1058                         $this->output( "...iwl_prefix_title_from index is already non-UNIQUE.\n" );
1059
1060                         return true;
1061                 }
1062                 if ( $this->skipSchema ) {
1063                         $this->output( "...skipping schema change (making iwl_prefix_title_from index non-UNIQUE).\n" );
1064
1065                         return false;
1066                 }
1067
1068                 return $this->applyPatch(
1069                         'patch-iwl_prefix_title_from-non-unique.sql',
1070                         false,
1071                         'Making iwl_prefix_title_from index non-UNIQUE'
1072                 );
1073         }
1074
1075         protected function doUserNewTalkUseridUnsigned() {
1076                 if ( !$this->doTable( 'user_newtalk' ) ) {
1077                         return true;
1078                 }
1079
1080                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_id' );
1081                 if ( $info === false ) {
1082                         return true;
1083                 }
1084                 if ( $info->isUnsigned() ) {
1085                         $this->output( "...user_id is already unsigned int.\n" );
1086
1087                         return true;
1088                 }
1089
1090                 return $this->applyPatch(
1091                         'patch-user-newtalk-userid-unsigned.sql',
1092                         false,
1093                         'Making user_id unsigned int'
1094                 );
1095         }
1096 }