includes/installer/PostgresUpdater.php

   1 <?php
   2 /**
   3  * PostgreSQL-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  * Class for handling updates to Postgres databases.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30
  31 class PostgresUpdater extends DatabaseUpdater {
  32
  33         /**
  34          * @var DatabasePostgres
  35          */
  36         protected $db;
  37
  38         /**
  39          * @todo FIXME: Postgres should use sequential updates like Mysql, Sqlite
  40          * and everybody else. It never got refactored like it should've.
  41          * @return array
  42          */
  43         protected function getCoreUpdateList() {
  44                 return array(
  45                         # rename tables 1.7.3
  46                         # r15791 Change reserved word table names "user" and "text"
  47                         array( 'renameTable', 'user', 'mwuser' ),
  48                         array( 'renameTable', 'text', 'pagecontent' ),
  49                         array( 'renameIndex', 'mwuser', 'user_pkey', 'mwuser_pkey' ),
  50                         array( 'renameIndex', 'mwuser', 'user_user_name_key', 'mwuser_user_name_key' ),
  51                         array( 'renameIndex', 'pagecontent', 'text_pkey', 'pagecontent_pkey' ),
  52
  53                         # renamed sequences
  54                         array( 'renameSequence', 'ipblocks_ipb_id_val', 'ipblocks_ipb_id_seq'         ),
  55                         array( 'renameSequence', 'rev_rev_id_val',      'revision_rev_id_seq'         ),
  56                         array( 'renameSequence', 'text_old_id_val',     'text_old_id_seq'             ),
  57                         array( 'renameSequence', 'rc_rc_id_seq',        'recentchanges_rc_id_seq'     ),
  58                         array( 'renameSequence', 'log_log_id_seq',      'logging_log_id_seq'          ),
  59                         array( 'renameSequence', 'pr_id_val',           'page_restrictions_pr_id_seq' ),
  60                         array( 'renameSequence', 'us_id_seq',           'uploadstash_us_id_seq' ),
  61
  62                         # since r58263
  63                         array( 'renameSequence', 'category_id_seq', 'category_cat_id_seq'),
  64
  65                         # new sequences if not renamed above
  66                         array( 'addSequence', 'logging', false, 'logging_log_id_seq' ),
  67                         array( 'addSequence', 'page_restrictions', false, 'page_restrictions_pr_id_seq' ),
  68                         array( 'addSequence', 'filearchive', 'fa_id', 'filearchive_fa_id_seq' ),
  69
  70                         # new tables
  71                         array( 'addTable', 'category',          'patch-category.sql' ),
  72                         array( 'addTable', 'page',              'patch-page.sql' ),
  73                         array( 'addTable', 'querycachetwo',     'patch-querycachetwo.sql' ),
  74                         array( 'addTable', 'page_props',        'patch-page_props.sql' ),
  75                         array( 'addTable', 'page_restrictions', 'patch-page_restrictions.sql' ),
  76                         array( 'addTable', 'profiling',         'patch-profiling.sql' ),
  77                         array( 'addTable', 'protected_titles',  'patch-protected_titles.sql' ),
  78                         array( 'addTable', 'redirect',          'patch-redirect.sql' ),
  79                         array( 'addTable', 'updatelog',         'patch-updatelog.sql' ),
  80                         array( 'addTable', 'change_tag',        'patch-change_tag.sql' ),
  81                         array( 'addTable', 'tag_summary',       'patch-tag_summary.sql' ),
  82                         array( 'addTable', 'valid_tag',         'patch-valid_tag.sql' ),
  83                         array( 'addTable', 'user_properties',   'patch-user_properties.sql' ),
  84                         array( 'addTable', 'log_search',        'patch-log_search.sql' ),
  85                         array( 'addTable', 'l10n_cache',        'patch-l10n_cache.sql' ),
  86                         array( 'addTable', 'iwlinks',           'patch-iwlinks.sql' ),
  87                         array( 'addTable', 'msg_resource',      'patch-msg_resource.sql' ),
  88                         array( 'addTable', 'msg_resource_links','patch-msg_resource_links.sql' ),
  89                         array( 'addTable', 'module_deps',       'patch-module_deps.sql' ),
  90                         array( 'addTable', 'uploadstash',       'patch-uploadstash.sql' ),
  91                         array( 'addTable', 'user_former_groups','patch-user_former_groups.sql' ),
  92                         array( 'addTable', 'sites',             'patch-sites.sql' ),
  93
  94                         # Needed before new field
  95                         array( 'convertArchive2' ),
  96
  97                         # new fields
  98                         array( 'addPgField', 'updatelog',     'ul_value',             'TEXT' ),
  99                         array( 'addPgField', 'archive',       'ar_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 100                         array( 'addPgField', 'archive',       'ar_len',               'INTEGER' ),
 101                         array( 'addPgField', 'archive',       'ar_page_id',           'INTEGER' ),
 102                         array( 'addPgField', 'archive',       'ar_parent_id',         'INTEGER' ),
 103                         array( 'addPgField', 'archive',       'ar_content_model',     'TEXT' ),
 104                         array( 'addPgField', 'archive',       'ar_content_format',    'TEXT' ),
 105                         array( 'addPgField', 'categorylinks', 'cl_sortkey_prefix',    "TEXT NOT NULL DEFAULT ''"),
 106                         array( 'addPgField', 'categorylinks', 'cl_collation',         "TEXT NOT NULL DEFAULT 0"),
 107                         array( 'addPgField', 'categorylinks', 'cl_type',              "TEXT NOT NULL DEFAULT 'page'"),
 108                         array( 'addPgField', 'image',         'img_sha1',             "TEXT NOT NULL DEFAULT ''" ),
 109                         array( 'addPgField', 'ipblocks',      'ipb_allow_usertalk',   'SMALLINT NOT NULL DEFAULT 0' ),
 110                         array( 'addPgField', 'ipblocks',      'ipb_anon_only',        'SMALLINT NOT NULL DEFAULT 0' ),
 111                         array( 'addPgField', 'ipblocks',      'ipb_by_text',          "TEXT NOT NULL DEFAULT ''" ),
 112                         array( 'addPgField', 'ipblocks',      'ipb_block_email',      'SMALLINT NOT NULL DEFAULT 0' ),
 113                         array( 'addPgField', 'ipblocks',      'ipb_create_account',   'SMALLINT NOT NULL DEFAULT 1' ),
 114                         array( 'addPgField', 'ipblocks',      'ipb_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 115                         array( 'addPgField', 'ipblocks',      'ipb_enable_autoblock', 'SMALLINT NOT NULL DEFAULT 1' ),
 116                         array( 'addPgField', 'ipblocks',      'ipb_parent_block_id',            'INTEGER DEFAULT NULL REFERENCES ipblocks(ipb_id) ON DELETE SET NULL DEFERRABLE INITIALLY DEFERRED' ),
 117                         array( 'addPgField', 'filearchive',   'fa_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 118                         array( 'addPgField', 'filearchive',   'fa_sha1',              "TEXT NOT NULL DEFAULT ''" ),
 119                         array( 'addPgField', 'logging',       'log_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 120                         array( 'addPgField', 'logging',       'log_id',               "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('logging_log_id_seq')" ),
 121                         array( 'addPgField', 'logging',       'log_params',           'TEXT' ),
 122                         array( 'addPgField', 'mwuser',        'user_editcount',       'INTEGER' ),
 123                         array( 'addPgField', 'mwuser',        'user_newpass_time',    'TIMESTAMPTZ' ),
 124                         array( 'addPgField', 'oldimage',      'oi_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 125                         array( 'addPgField', 'oldimage',      'oi_major_mime',        "TEXT NOT NULL DEFAULT 'unknown'" ),
 126                         array( 'addPgField', 'oldimage',      'oi_media_type',        'TEXT' ),
 127                         array( 'addPgField', 'oldimage',      'oi_metadata',          "BYTEA NOT NULL DEFAULT ''" ),
 128                         array( 'addPgField', 'oldimage',      'oi_minor_mime',        "TEXT NOT NULL DEFAULT 'unknown'" ),
 129                         array( 'addPgField', 'oldimage',      'oi_sha1',              "TEXT NOT NULL DEFAULT ''" ),
 130                         array( 'addPgField', 'page',          'page_content_model',   'TEXT' ),
 131                         array( 'addPgField', 'page_restrictions', 'pr_id',            "INTEGER NOT NULL UNIQUE DEFAULT nextval('page_restrictions_pr_id_seq')" ),
 132                         array( 'addPgField', 'profiling',     'pf_memory',            'NUMERIC(18,10) NOT NULL DEFAULT 0' ),
 133                         array( 'addPgField', 'recentchanges', 'rc_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 134                         array( 'addPgField', 'recentchanges', 'rc_log_action',        'TEXT' ),
 135                         array( 'addPgField', 'recentchanges', 'rc_log_type',          'TEXT' ),
 136                         array( 'addPgField', 'recentchanges', 'rc_logid',             'INTEGER NOT NULL DEFAULT 0' ),
 137                         array( 'addPgField', 'recentchanges', 'rc_new_len',           'INTEGER' ),
 138                         array( 'addPgField', 'recentchanges', 'rc_old_len',           'INTEGER' ),
 139                         array( 'addPgField', 'recentchanges', 'rc_params',            'TEXT' ),
 140                         array( 'addPgField', 'redirect',      'rd_interwiki',         'TEXT NULL' ),
 141                         array( 'addPgField', 'redirect',      'rd_fragment',          'TEXT NULL' ),
 142                         array( 'addPgField', 'revision',      'rev_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 143                         array( 'addPgField', 'revision',      'rev_len',              'INTEGER' ),
 144                         array( 'addPgField', 'revision',      'rev_parent_id',        'INTEGER DEFAULT NULL' ),
 145                         array( 'addPgField', 'revision',      'rev_content_model',    'TEXT' ),
 146                         array( 'addPgField', 'revision',      'rev_content_format',   'TEXT' ),
 147                         array( 'addPgField', 'site_stats',    'ss_active_users',      "INTEGER DEFAULT '-1'" ),
 148                         array( 'addPgField', 'user_newtalk',  'user_last_timestamp',  'TIMESTAMPTZ' ),
 149                         array( 'addPgField', 'logging',       'log_user_text',        "TEXT NOT NULL DEFAULT ''" ),
 150                         array( 'addPgField', 'logging',       'log_page',             'INTEGER' ),
 151                         array( 'addPgField', 'interwiki',     'iw_api',               "TEXT NOT NULL DEFAULT ''"),
 152                         array( 'addPgField', 'interwiki',     'iw_wikiid',            "TEXT NOT NULL DEFAULT ''"),
 153                         array( 'addPgField', 'revision',      'rev_sha1',             "TEXT NOT NULL DEFAULT ''" ),
 154                         array( 'addPgField', 'archive',       'ar_sha1',              "TEXT NOT NULL DEFAULT ''" ),
 155                         array( 'addPgField', 'uploadstash',   'us_chunk_inx',         "INTEGER NULL" ),
 156                         array( 'addPgField', 'job',           'job_timestamp',        "TIMESTAMPTZ" ),
 157                         array( 'addPgField', 'job',           'job_random',           "INTEGER NOT NULL DEFAULT 0" ),
 158                         array( 'addPgField', 'job',           'job_attempts',         "INTEGER NOT NULL DEFAULT 0" ),
 159                         array( 'addPgField', 'job',           'job_token',            "TEXT NOT NULL DEFAULT ''" ),
 160                         array( 'addPgField', 'job',           'job_token_timestamp',  "TIMESTAMPTZ" ),
 161                         array( 'addPgField', 'job',           'job_sha1',             "TEXT NOT NULL DEFAULT ''" ),
 162
 163                         # type changes
 164                         array( 'changeField', 'archive',       'ar_deleted',      'smallint', '' ),
 165                         array( 'changeField', 'archive',       'ar_minor_edit',   'smallint', 'ar_minor_edit::smallint DEFAULT 0' ),
 166                         array( 'changeField', 'filearchive',   'fa_deleted',      'smallint', '' ),
 167                         array( 'changeField', 'filearchive',   'fa_height',       'integer',  '' ),
 168                         array( 'changeField', 'filearchive',   'fa_metadata',     'bytea',    "decode(fa_metadata,'escape')" ),
 169                         array( 'changeField', 'filearchive',   'fa_size',         'integer',  '' ),
 170                         array( 'changeField', 'filearchive',   'fa_width',        'integer',  '' ),
 171                         array( 'changeField', 'filearchive',   'fa_storage_group', 'text',     '' ),
 172                         array( 'changeField', 'filearchive',   'fa_storage_key',  'text',     '' ),
 173                         array( 'changeField', 'image',         'img_metadata',    'bytea',    "decode(img_metadata,'escape')" ),
 174                         array( 'changeField', 'image',         'img_size',        'integer',  '' ),
 175                         array( 'changeField', 'image',         'img_width',       'integer',  '' ),
 176                         array( 'changeField', 'image',         'img_height',      'integer',  '' ),
 177                         array( 'changeField', 'interwiki',     'iw_local',        'smallint', 'iw_local::smallint' ),
 178                         array( 'changeField', 'interwiki',     'iw_trans',        'smallint', 'iw_trans::smallint DEFAULT 0' ),
 179                         array( 'changeField', 'ipblocks',      'ipb_auto',        'smallint', 'ipb_auto::smallint DEFAULT 0' ),
 180                         array( 'changeField', 'ipblocks',      'ipb_anon_only',   'smallint', "CASE WHEN ipb_anon_only=' ' THEN 0 ELSE ipb_anon_only::smallint END DEFAULT 0" ),
 181                         array( 'changeField', 'ipblocks',      'ipb_create_account', 'smallint', "CASE WHEN ipb_create_account=' ' THEN 0 ELSE ipb_create_account::smallint END DEFAULT 1" ),
 182                         array( 'changeField', 'ipblocks',      'ipb_enable_autoblock', 'smallint', "CASE WHEN ipb_enable_autoblock=' ' THEN 0 ELSE ipb_enable_autoblock::smallint END DEFAULT 1" ),
 183                         array( 'changeField', 'ipblocks',      'ipb_block_email', 'smallint', "CASE WHEN ipb_block_email=' ' THEN 0 ELSE ipb_block_email::smallint END DEFAULT 0" ),
 184                         array( 'changeField', 'ipblocks',      'ipb_address',     'text',     'ipb_address::text' ),
 185                         array( 'changeField', 'ipblocks',      'ipb_deleted',     'smallint', 'ipb_deleted::smallint DEFAULT 0' ),
 186                         array( 'changeField', 'mwuser',        'user_token',      'text',     '' ),
 187                         array( 'changeField', 'mwuser',        'user_email_token', 'text',     '' ),
 188                         array( 'changeField', 'objectcache',   'keyname',         'text',     '' ),
 189                         array( 'changeField', 'oldimage',      'oi_height',       'integer',  '' ),
 190                         array( 'changeField', 'oldimage',      'oi_metadata',     'bytea',    "decode(img_metadata,'escape')" ),
 191                         array( 'changeField', 'oldimage',      'oi_size',         'integer',  '' ),
 192                         array( 'changeField', 'oldimage',      'oi_width',        'integer',  '' ),
 193                         array( 'changeField', 'page',          'page_is_redirect', 'smallint', 'page_is_redirect::smallint DEFAULT 0' ),
 194                         array( 'changeField', 'page',          'page_is_new',     'smallint', 'page_is_new::smallint DEFAULT 0' ),
 195                         array( 'changeField', 'querycache',    'qc_value',        'integer',  '' ),
 196                         array( 'changeField', 'querycachetwo', 'qcc_value',       'integer',  '' ),
 197                         array( 'changeField', 'recentchanges', 'rc_bot',          'smallint', 'rc_bot::smallint DEFAULT 0' ),
 198                         array( 'changeField', 'recentchanges', 'rc_deleted',      'smallint', '' ),
 199                         array( 'changeField', 'recentchanges', 'rc_minor',        'smallint', 'rc_minor::smallint DEFAULT 0' ),
 200                         array( 'changeField', 'recentchanges', 'rc_new',          'smallint', 'rc_new::smallint DEFAULT 0' ),
 201                         array( 'changeField', 'recentchanges', 'rc_type',         'smallint', 'rc_type::smallint DEFAULT 0' ),
 202                         array( 'changeField', 'recentchanges', 'rc_patrolled',    'smallint', 'rc_patrolled::smallint DEFAULT 0' ),
 203                         array( 'changeField', 'revision',      'rev_deleted',     'smallint', 'rev_deleted::smallint DEFAULT 0' ),
 204                         array( 'changeField', 'revision',      'rev_minor_edit',  'smallint', 'rev_minor_edit::smallint DEFAULT 0' ),
 205                         array( 'changeField', 'templatelinks', 'tl_namespace',    'smallint', 'tl_namespace::smallint' ),
 206                         array( 'changeField', 'user_newtalk',  'user_ip',         'text',     'host(user_ip)' ),
 207                         array( 'changeField', 'uploadstash',   'us_image_bits',   'smallint', '' ),
 208                         array( 'changeField', 'profiling',     'pf_time',         'float', '' ),
 209                         array( 'changeField', 'profiling',     'pf_memory',       'float', '' ),
 210
 211                         # null changes
 212                         array( 'changeNullableField', 'oldimage', 'oi_bits',       'NULL' ),
 213                         array( 'changeNullableField', 'oldimage', 'oi_timestamp',  'NULL' ),
 214                         array( 'changeNullableField', 'oldimage', 'oi_major_mime', 'NULL' ),
 215                         array( 'changeNullableField', 'oldimage', 'oi_minor_mime', 'NULL' ),
 216                         array( 'changeNullableField', 'image', 'img_metadata', 'NOT NULL'),
 217                         array( 'changeNullableField', 'filearchive', 'fa_metadata', 'NOT NULL'),
 218                         array( 'changeNullableField', 'recentchanges', 'rc_cur_id', 'NULL' ),
 219
 220                         array( 'checkOiDeleted' ),
 221
 222                         # New indexes
 223                         array( 'addPgIndex', 'archive',       'archive_user_text',      '(ar_user_text)' ),
 224                         array( 'addPgIndex', 'image',         'img_sha1',               '(img_sha1)' ),
 225                         array( 'addPgIndex', 'ipblocks',      'ipb_parent_block_id',              '(ipb_parent_block_id)' ),
 226                         array( 'addPgIndex', 'oldimage',      'oi_sha1',                '(oi_sha1)' ),
 227                         array( 'addPgIndex', 'page',          'page_mediawiki_title',   '(page_title) WHERE page_namespace = 8' ),
 228                         array( 'addPgIndex', 'pagelinks',     'pagelinks_title',        '(pl_title)' ),
 229                         array( 'addPgIndex', 'page_props',    'pp_propname_page',       '(pp_propname, pp_page)' ),
 230                         array( 'addPgIndex', 'revision',      'rev_text_id_idx',        '(rev_text_id)' ),
 231                         array( 'addPgIndex', 'recentchanges', 'rc_timestamp_bot',       '(rc_timestamp) WHERE rc_bot = 0' ),
 232                         array( 'addPgIndex', 'templatelinks', 'templatelinks_from',     '(tl_from)' ),
 233                         array( 'addPgIndex', 'watchlist',     'wl_user',                '(wl_user)' ),
 234                         array( 'addPgIndex', 'logging',       'logging_user_type_time', '(log_user, log_type, log_timestamp)' ),
 235                         array( 'addPgIndex', 'logging',       'logging_page_id_time',   '(log_page,log_timestamp)' ),
 236                         array( 'addPgIndex', 'iwlinks',       'iwl_prefix_from_title',  '(iwl_prefix, iwl_from, iwl_title)' ),
 237                         array( 'addPgIndex', 'iwlinks',       'iwl_prefix_title_from',  '(iwl_prefix, iwl_title, iwl_from)' ),
 238                         array( 'addPgIndex', 'job',           'job_timestamp_idx',      '(job_timestamp)' ),
 239                         array( 'addPgIndex', 'job',           'job_sha1',               '(job_sha1)' ),
 240                         array( 'addPgIndex', 'job',           'job_cmd_token',          '(job_cmd, job_token, job_random)' ),
 241                         array( 'addPgIndex', 'job',           'job_cmd_token_id',       '(job_cmd, job_token, job_id)' ),
 242                         array( 'addPgIndex', 'filearchive',   'fa_sha1',                '(fa_sha1)' ),
 243
 244                         array( 'checkIndex', 'pagelink_unique', array(
 245                                 array( 'pl_from', 'int4_ops', 'btree', 0 ),
 246                                 array( 'pl_namespace', 'int2_ops', 'btree', 0 ),
 247                                 array( 'pl_title', 'text_ops', 'btree', 0 ),
 248                         ),
 249                         'CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title)' ),
 250                         array( 'checkIndex', 'cl_sortkey', array(
 251                                 array( 'cl_to', 'text_ops', 'btree', 0 ),
 252                                 array( 'cl_sortkey', 'text_ops', 'btree', 0 ),
 253                                 array( 'cl_from', 'int4_ops', 'btree', 0 ),
 254                         ),
 255                         'CREATE INDEX cl_sortkey ON "categorylinks" USING "btree" ("cl_to", "cl_sortkey", "cl_from")' ),
 256                         array( 'checkIndex', 'iwl_prefix_title_from', array(
 257                                 array( 'iwl_prefix', 'text_ops', 'btree', 0 ),
 258                                 array( 'iwl_title', 'text_ops', 'btree', 0 ),
 259                                 array( 'iwl_from', 'int4_ops', 'btree', 0 ),
 260                         ),
 261                         'CREATE INDEX iwl_prefix_title_from ON "iwlinks" USING "btree" ("iwl_prefix", "iwl_title", "iwl_from")' ),
 262                         array( 'checkIndex', 'logging_times', array(
 263                                 array( 'log_timestamp', 'timestamptz_ops', 'btree', 0 ),
 264                         ),
 265                         'CREATE INDEX "logging_times" ON "logging" USING "btree" ("log_timestamp")' ),
 266                         array( 'dropIndex', 'oldimage', 'oi_name' ),
 267                         array( 'checkIndex', 'oi_name_archive_name', array(
 268                                 array( 'oi_name', 'text_ops', 'btree', 0 ),
 269                                 array( 'oi_archive_name', 'text_ops', 'btree', 0 ),
 270                         ),
 271                         'CREATE INDEX "oi_name_archive_name" ON "oldimage" USING "btree" ("oi_name", "oi_archive_name")' ),
 272                         array( 'checkIndex', 'oi_name_timestamp', array(
 273                                 array( 'oi_name', 'text_ops', 'btree', 0 ),
 274                                 array( 'oi_timestamp', 'timestamptz_ops', 'btree', 0 ),
 275                         ),
 276                         'CREATE INDEX "oi_name_timestamp" ON "oldimage" USING "btree" ("oi_name", "oi_timestamp")' ),
 277                         array( 'checkIndex', 'page_main_title', array(
 278                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 279                         ),
 280                         'CREATE INDEX "page_main_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 0)' ),
 281                         array( 'checkIndex', 'page_mediawiki_title', array(
 282                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 283                         ),
 284                         'CREATE INDEX "page_mediawiki_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 8)' ),
 285                         array( 'checkIndex', 'page_project_title', array(
 286                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 287                         ),
 288                         'CREATE INDEX "page_project_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 4)' ),
 289                         array( 'checkIndex', 'page_talk_title', array(
 290                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 291                         ),
 292                         'CREATE INDEX "page_talk_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 1)' ),
 293                         array( 'checkIndex', 'page_user_title', array(
 294                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 295                         ),
 296                         'CREATE INDEX "page_user_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 2)' ),
 297                         array( 'checkIndex', 'page_utalk_title', array(
 298                                 array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
 299                         ),
 300                         'CREATE INDEX "page_utalk_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 3)' ),
 301                         array( 'checkIndex', 'ts2_page_text', array(
 302                                 array( 'textvector', 'tsvector_ops', 'gist', 0 ),
 303                         ),
 304                         'CREATE INDEX "ts2_page_text" ON "pagecontent" USING "gist" ("textvector")' ),
 305                         array( 'checkIndex', 'ts2_page_title', array(
 306                                 array( 'titlevector', 'tsvector_ops', 'gist', 0 ),
 307                         ),
 308                         'CREATE INDEX "ts2_page_title" ON "page" USING "gist" ("titlevector")' ),
 309
 310                         array( 'checkOiNameConstraint' ),
 311                         array( 'checkPageDeletedTrigger' ),
 312                         array( 'checkRevUserFkey' ),
 313                         array( 'dropIndex', 'ipblocks', 'ipb_address' ),
 314                         array( 'checkIndex', 'ipb_address_unique', array(
 315                                 array( 'ipb_address', 'text_ops', 'btree', 0 ),
 316                                 array( 'ipb_user', 'int4_ops', 'btree', 0 ),
 317                                 array( 'ipb_auto', 'int2_ops', 'btree', 0 ),
 318                                 array( 'ipb_anon_only', 'int2_ops', 'btree', 0 ),
 319                         ),
 320                         'CREATE UNIQUE INDEX ipb_address_unique ON ipblocks (ipb_address,ipb_user,ipb_auto,ipb_anon_only)' ),
 321
 322                         array( 'checkIwlPrefix' ),
 323
 324                         # All FK columns should be deferred
 325                         array( 'changeFkeyDeferrable', 'archive',          'ar_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 326                         array( 'changeFkeyDeferrable', 'categorylinks',    'cl_from',         'page(page_id) ON DELETE CASCADE' ),
 327                         array( 'changeFkeyDeferrable', 'externallinks',    'el_from',         'page(page_id) ON DELETE CASCADE' ),
 328                         array( 'changeFkeyDeferrable', 'filearchive',      'fa_deleted_user', 'mwuser(user_id) ON DELETE SET NULL' ),
 329                         array( 'changeFkeyDeferrable', 'filearchive',      'fa_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 330                         array( 'changeFkeyDeferrable', 'image',            'img_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 331                         array( 'changeFkeyDeferrable', 'imagelinks',       'il_from',         'page(page_id) ON DELETE CASCADE' ),
 332                         array( 'changeFkeyDeferrable', 'ipblocks',         'ipb_by',          'mwuser(user_id) ON DELETE CASCADE' ),
 333                         array( 'changeFkeyDeferrable', 'ipblocks',         'ipb_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 334                         array( 'changeFkeyDeferrable', 'ipblocks',         'ipb_parent_block_id',       'ipblocks(ipb_id) ON DELETE SET NULL' ),
 335                         array( 'changeFkeyDeferrable', 'langlinks',        'll_from',         'page(page_id) ON DELETE CASCADE' ),
 336                         array( 'changeFkeyDeferrable', 'logging',          'log_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 337                         array( 'changeFkeyDeferrable', 'oldimage',         'oi_name',         'image(img_name) ON DELETE CASCADE ON UPDATE CASCADE' ),
 338                         array( 'changeFkeyDeferrable', 'oldimage',         'oi_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 339                         array( 'changeFkeyDeferrable', 'pagelinks',        'pl_from',         'page(page_id) ON DELETE CASCADE' ),
 340                         array( 'changeFkeyDeferrable', 'page_props',       'pp_page',         'page (page_id) ON DELETE CASCADE' ),
 341                         array( 'changeFkeyDeferrable', 'page_restrictions', 'pr_page',         'page(page_id) ON DELETE CASCADE' ),
 342                         array( 'changeFkeyDeferrable', 'protected_titles', 'pt_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 343                         array( 'changeFkeyDeferrable', 'recentchanges',    'rc_cur_id',       'page(page_id) ON DELETE SET NULL' ),
 344                         array( 'changeFkeyDeferrable', 'recentchanges',    'rc_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 345                         array( 'changeFkeyDeferrable', 'redirect',         'rd_from',         'page(page_id) ON DELETE CASCADE' ),
 346                         array( 'changeFkeyDeferrable', 'revision',         'rev_page',        'page (page_id) ON DELETE CASCADE' ),
 347                         array( 'changeFkeyDeferrable', 'revision',         'rev_user',        'mwuser(user_id) ON DELETE RESTRICT' ),
 348                         array( 'changeFkeyDeferrable', 'templatelinks',    'tl_from',         'page(page_id) ON DELETE CASCADE' ),
 349                         array( 'changeFkeyDeferrable', 'user_groups',      'ug_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 350                         array( 'changeFkeyDeferrable', 'user_newtalk',     'user_id',         'mwuser(user_id) ON DELETE CASCADE' ),
 351                         array( 'changeFkeyDeferrable', 'user_properties',  'up_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 352                         array( 'changeFkeyDeferrable', 'watchlist',        'wl_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 353
 354                         # r81574
 355                         array( 'addInterwikiType' ),
 356                         # end
 357                         array( 'tsearchFixes' ),
 358                 );
 359         }
 360
 361         protected function getOldGlobalUpdates() {
 362                 global $wgExtNewTables, $wgExtPGNewFields, $wgExtPGAlteredFields, $wgExtNewIndexes;
 363
 364                 $updates = array();
 365
 366                 # Add missing extension tables
 367                 foreach ( $wgExtNewTables as $tableRecord ) {
 368                         $updates[] = array(
 369                                 'addTable', $tableRecord[0], $tableRecord[1], true
 370                         );
 371                 }
 372
 373                 # Add missing extension fields
 374                 foreach ( $wgExtPGNewFields as $fieldRecord ) {
 375                         $updates[] = array(
 376                                 'addPgField', $fieldRecord[0], $fieldRecord[1],
 377                                 $fieldRecord[2]
 378                         );
 379                 }
 380
 381                 # Change altered columns
 382                 foreach ( $wgExtPGAlteredFields as $fieldRecord ) {
 383                         $updates[] = array(
 384                                 'changeField', $fieldRecord[0], $fieldRecord[1],
 385                                 $fieldRecord[2]
 386                         );
 387                 }
 388
 389                 # Add missing extension indexes
 390                 foreach ( $wgExtNewIndexes as $fieldRecord ) {
 391                         $updates[] = array(
 392                                 'addPgExtIndex', $fieldRecord[0], $fieldRecord[1],
 393                                 $fieldRecord[2]
 394                         );
 395                 }
 396
 397                 return $updates;
 398         }
 399
 400         protected function describeTable( $table ) {
 401                 $q = <<<END
 402 SELECT attname, attnum FROM pg_namespace, pg_class, pg_attribute
 403         WHERE pg_class.relnamespace = pg_namespace.oid
 404           AND attrelid=pg_class.oid AND attnum > 0
 405           AND relname=%s AND nspname=%s
 406 END;
 407                 $res = $this->db->query( sprintf( $q,
 408                         $this->db->addQuotes( $table ),
 409                         $this->db->addQuotes( $this->db->getCoreSchema() ) ) );
 410                 if ( !$res ) {
 411                         return null;
 412                 }
 413
 414                 $cols = array();
 415                 foreach ( $res as $r ) {
 416                         $cols[] = array(
 417                                 "name" => $r[0],
 418                                 "ord" => $r[1],
 419                         );
 420                 }
 421
 422                 return $cols;
 423         }
 424
 425         function describeIndex( $idx ) {
 426                 // first fetch the key (which is a list of columns ords) and
 427                 // the table the index applies to (an oid)
 428                 $q = <<<END
 429 SELECT indkey, indrelid FROM pg_namespace, pg_class, pg_index
 430         WHERE nspname=%s
 431           AND pg_class.relnamespace = pg_namespace.oid
 432           AND relname=%s
 433           AND indexrelid=pg_class.oid
 434 END;
 435                 $res = $this->db->query(
 436                         sprintf(
 437                                 $q,
 438                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 439                                 $this->db->addQuotes( $idx )
 440                         )
 441                 );
 442                 if ( !$res ) {
 443                         return null;
 444                 }
 445                 if ( !( $r = $this->db->fetchRow( $res ) ) ) {
 446                         return null;
 447                 }
 448
 449                 $indkey = $r[0];
 450                 $relid = intval( $r[1] );
 451                 $indkeys = explode( ' ', $indkey );
 452
 453                 $colnames = array();
 454                 foreach ( $indkeys as $rid ) {
 455                         $query = <<<END
 456 SELECT attname FROM pg_class, pg_attribute
 457         WHERE attrelid=$relid
 458           AND attnum=%d
 459           AND attrelid=pg_class.oid
 460 END;
 461                         $r2 = $this->db->query( sprintf( $query, $rid ) );
 462                         if ( !$r2 ) {
 463                                 return null;
 464                         }
 465                         if ( !( $row2 = $this->db->fetchRow( $r2 ) ) ) {
 466                                 return null;
 467                         }
 468                         $colnames[] = $row2[0];
 469                 }
 470
 471                 return $colnames;
 472         }
 473
 474         function fkeyDeltype( $fkey ) {
 475                 $q = <<<END
 476 SELECT confdeltype FROM pg_constraint, pg_namespace
 477         WHERE connamespace=pg_namespace.oid
 478           AND nspname=%s
 479           AND conname=%s;
 480 END;
 481                 $r = $this->db->query(
 482                         sprintf(
 483                                 $q,
 484                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 485                                 $this->db->addQuotes( $fkey )
 486                         )
 487                 );
 488                 if ( !( $row = $this->db->fetchRow( $r ) ) ) {
 489                         return null;
 490                 }
 491
 492                 return $row[0];
 493         }
 494
 495         function ruleDef( $table, $rule ) {
 496                 $q = <<<END
 497 SELECT definition FROM pg_rules
 498         WHERE schemaname = %s
 499           AND tablename = %s
 500           AND rulename = %s
 501 END;
 502                 $r = $this->db->query(
 503                         sprintf(
 504                                 $q,
 505                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 506                                 $this->db->addQuotes( $table ),
 507                                 $this->db->addQuotes( $rule )
 508                         )
 509                 );
 510                 $row = $this->db->fetchRow( $r );
 511                 if ( !$row ) {
 512                         return null;
 513                 }
 514                 $d = $row[0];
 515
 516                 return $d;
 517         }
 518
 519         protected function addSequence( $table, $pkey, $ns ) {
 520                 if ( !$this->db->sequenceExists( $ns ) ) {
 521                         $this->output( "Creating sequence $ns\n" );
 522                         $this->db->query( "CREATE SEQUENCE $ns" );
 523                         if ( $pkey !== false ) {
 524                                 $this->setDefault( $table, $pkey, '"nextval"(\'"' . $ns . '"\'::"regclass")' );
 525                         }
 526                 }
 527         }
 528
 529         protected function renameSequence( $old, $new ) {
 530                 if ( $this->db->sequenceExists( $new ) ) {
 531                         $this->output( "...sequence $new already exists.\n" );
 532
 533                         return;
 534                 }
 535                 if ( $this->db->sequenceExists( $old ) ) {
 536                         $this->output( "Renaming sequence $old to $new\n" );
 537                         $this->db->query( "ALTER SEQUENCE $old RENAME TO $new" );
 538                 }
 539         }
 540
 541         protected function renameTable( $old, $new, $patch = false ) {
 542                 if ( $this->db->tableExists( $old ) ) {
 543                         $this->output( "Renaming table $old to $new\n" );
 544                         $old = $this->db->realTableName( $old, "quoted" );
 545                         $new = $this->db->realTableName( $new, "quoted" );
 546                         $this->db->query( "ALTER TABLE $old RENAME TO $new" );
 547                         if ( $patch !== false ) {
 548                                 $this->applyPatch( $patch );
 549                         }
 550                 }
 551         }
 552
 553         protected function renameIndex(
 554                 $table, $old, $new, $skipBothIndexExistWarning = false, $a = false, $b = false
 555         ) {
 556                 // First requirement: the table must exist
 557                 if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
 558                         $this->output( "...skipping: '$table' table doesn't exist yet.\n" );
 559
 560                         return;
 561                 }
 562
 563                 // Second requirement: the new index must be missing
 564                 if ( $this->db->indexExists( $table, $new, __METHOD__ ) ) {
 565                         $this->output( "...index $new already set on $table table.\n" );
 566                         if ( !$skipBothIndexExistWarning
 567                                 && $this->db->indexExists( $table, $old, __METHOD__ )
 568                         ) {
 569                                 $this->output( "...WARNING: $old still exists, despite it has been renamed into $new (which also exists).\n" .
 570                                         "            $old should be manually removed if not needed anymore.\n" );
 571                         }
 572
 573                         return;
 574                 }
 575
 576                 // Third requirement: the old index must exist
 577                 if ( !$this->db->indexExists( $table, $old, __METHOD__ ) ) {
 578                         $this->output( "...skipping: index $old doesn't exist.\n" );
 579
 580                         return;
 581                 }
 582
 583                 $this->db->query( "ALTER INDEX $old RENAME TO $new" );
 584         }
 585
 586         protected function addPgField( $table, $field, $type ) {
 587                 $fi = $this->db->fieldInfo( $table, $field );
 588                 if ( !is_null( $fi ) ) {
 589                         $this->output( "...column '$table.$field' already exists\n" );
 590
 591                         return;
 592                 } else {
 593                         $this->output( "Adding column '$table.$field'\n" );
 594                         $this->db->query( "ALTER TABLE $table ADD $field $type" );
 595                 }
 596         }
 597
 598         protected function changeField( $table, $field, $newtype, $default ) {
 599                 $fi = $this->db->fieldInfo( $table, $field );
 600                 if ( is_null( $fi ) ) {
 601                         $this->output( "...ERROR: expected column $table.$field to exist\n" );
 602                         exit( 1 );
 603                 }
 604
 605                 if ( $fi->type() === $newtype ) {
 606                         $this->output( "...column '$table.$field' is already of type '$newtype'\n" );
 607                 } else {
 608                         $this->output( "Changing column type of '$table.$field' from '{$fi->type()}' to '$newtype'\n" );
 609                         $sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
 610                         if ( strlen( $default ) ) {
 611                                 $res = array();
 612                                 if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
 613                                         $sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
 614                                         $this->db->query( $sqldef );
 615                                         $default = preg_replace( '/\s*DEFAULT .+/', '', $default );
 616                                 }
 617                                 $sql .= " USING $default";
 618                         }
 619                         $this->db->query( $sql );
 620                 }
 621         }
 622
 623         protected function setDefault( $table, $field, $default ) {
 624
 625                 $info = $this->db->fieldInfo( $table, $field );
 626                 if ( $info->defaultValue() !== $default ) {
 627                         $this->output( "Changing '$table.$field' default value\n" );
 628                         $this->db->query( "ALTER TABLE $table ALTER $field SET DEFAULT " . $default );
 629                 }
 630         }
 631
 632         protected function changeNullableField( $table, $field, $null ) {
 633                 $fi = $this->db->fieldInfo( $table, $field );
 634                 if ( is_null( $fi ) ) {
 635                         $this->output( "...ERROR: expected column $table.$field to exist\n" );
 636                         exit( 1 );
 637                 }
 638                 if ( $fi->isNullable() ) {
 639                         # # It's NULL - does it need to be NOT NULL?
 640                         if ( 'NOT NULL' === $null ) {
 641                                 $this->output( "Changing '$table.$field' to not allow NULLs\n" );
 642                                 $this->db->query( "ALTER TABLE $table ALTER $field SET NOT NULL" );
 643                         } else {
 644                                 $this->output( "...column '$table.$field' is already set as NULL\n" );
 645                         }
 646                 } else {
 647                         # # It's NOT NULL - does it need to be NULL?
 648                         if ( 'NULL' === $null ) {
 649                                 $this->output( "Changing '$table.$field' to allow NULLs\n" );
 650                                 $this->db->query( "ALTER TABLE $table ALTER $field DROP NOT NULL" );
 651                         } else {
 652                                 $this->output( "...column '$table.$field' is already set as NOT NULL\n" );
 653                         }
 654                 }
 655         }
 656
 657         public function addPgIndex( $table, $index, $type ) {
 658                 if ( $this->db->indexExists( $table, $index ) ) {
 659                         $this->output( "...index '$index' on table '$table' already exists\n" );
 660                 } else {
 661                         $this->output( "Creating index '$index' on table '$table' $type\n" );
 662                         $this->db->query( "CREATE INDEX $index ON $table $type" );
 663                 }
 664         }
 665
 666         public function addPgExtIndex( $table, $index, $type ) {
 667                 if ( $this->db->indexExists( $table, $index ) ) {
 668                         $this->output( "...index '$index' on table '$table' already exists\n" );
 669                 } else {
 670                         if ( preg_match( '/^\(/', $type ) ) {
 671                                 $this->output( "Creating index '$index' on table '$table'\n" );
 672                                 $this->db->query( "CREATE INDEX $index ON $table $type" );
 673                         } else {
 674                                 $this->applyPatch( $type, true, "Creating index '$index' on table '$table'" );
 675                         }
 676                 }
 677         }
 678
 679         protected function changeFkeyDeferrable( $table, $field, $clause ) {
 680                 $fi = $this->db->fieldInfo( $table, $field );
 681                 if ( is_null( $fi ) ) {
 682                         $this->output( "WARNING! Column '$table.$field' does not exist but it should! Please report this.\n" );
 683
 684                         return;
 685                 }
 686                 if ( $fi->is_deferred() && $fi->is_deferrable() ) {
 687                         return;
 688                 }
 689                 $this->output( "Altering column '$table.$field' to be DEFERRABLE INITIALLY DEFERRED\n" );
 690                 $conname = $fi->conname();
 691                 if ( $fi->conname() ) {
 692                         $conclause = "CONSTRAINT \"$conname\"";
 693                         $command = "ALTER TABLE $table DROP CONSTRAINT $conname";
 694                         $this->db->query( $command );
 695                 } else {
 696                         $this->output( "Column '$table.$field' does not have a foreign key constraint, will be added\n" );
 697                         $conclause = "";
 698                 }
 699                 $command = "ALTER TABLE $table ADD $conclause FOREIGN KEY ($field) REFERENCES $clause DEFERRABLE INITIALLY DEFERRED";
 700                 $this->db->query( $command );
 701         }
 702
 703         protected function convertArchive2() {
 704                 if ( $this->db->tableExists( "archive2" ) ) {
 705                         if ( $this->db->ruleExists( 'archive', 'archive_insert' ) ) {
 706                                 $this->output( "Dropping rule 'archive_insert'\n" );
 707                                 $this->db->query( 'DROP RULE archive_insert ON archive' );
 708                         }
 709                         if ( $this->db->ruleExists( 'archive', 'archive_delete' ) ) {
 710                                 $this->output( "Dropping rule 'archive_delete'\n" );
 711                                 $this->db->query( 'DROP RULE archive_delete ON archive' );
 712                         }
 713                         $this->applyPatch( 'patch-remove-archive2.sql', false, "Converting 'archive2' back to normal archive table" );
 714                 } else {
 715                         $this->output( "...obsolete table 'archive2' does not exist\n" );
 716                 }
 717         }
 718
 719         protected function checkOiDeleted() {
 720                 if ( $this->db->fieldInfo( 'oldimage', 'oi_deleted' )->type() !== 'smallint' ) {
 721                         $this->output( "Changing 'oldimage.oi_deleted' to type 'smallint'\n" );
 722                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted DROP DEFAULT" );
 723                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted TYPE SMALLINT USING (oi_deleted::smallint)" );
 724                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted SET DEFAULT 0" );
 725                 } else {
 726                         $this->output( "...column 'oldimage.oi_deleted' is already of type 'smallint'\n" );
 727                 }
 728         }
 729
 730         protected function checkOiNameConstraint() {
 731                 if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascaded" ) ) {
 732                         $this->output( "...table 'oldimage' has correct cascading delete/update foreign key to image\n" );
 733                 } else {
 734                         if ( $this->db->hasConstraint( "oldimage_oi_name_fkey" ) ) {
 735                                 $this->db->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey" );
 736                         }
 737                         if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascade" ) ) {
 738                                 $this->db->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey_cascade" );
 739                         }
 740                         $this->output( "Making foreign key on table 'oldimage' (to image) a cascade delete/update\n" );
 741                         $this->db->query( "ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascaded " .
 742                                 "FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE ON UPDATE CASCADE" );
 743                 }
 744         }
 745
 746         protected function checkPageDeletedTrigger() {
 747                 if ( !$this->db->triggerExists( 'page', 'page_deleted' ) ) {
 748                         $this->applyPatch( 'patch-page_deleted.sql', false, "Adding function and trigger 'page_deleted' to table 'page'" );
 749                 } else {
 750                         $this->output( "...table 'page' has 'page_deleted' trigger\n" );
 751                 }
 752         }
 753
 754         protected function dropIndex( $table, $index, $patch = '', $fullpath = false ) {
 755                 if ( $this->db->indexExists( $table, $index ) ) {
 756                         $this->output( "Dropping obsolete index '$index'\n" );
 757                         $this->db->query( "DROP INDEX \"" . $index . "\"" );
 758                 }
 759         }
 760
 761         protected function checkIndex( $index, $should_be, $good_def ) {
 762                 $pu = $this->db->indexAttributes( $index );
 763                 if ( !empty( $pu ) && $pu != $should_be ) {
 764                         $this->output( "Dropping obsolete version of index '$index'\n" );
 765                         $this->db->query( "DROP INDEX \"" . $index . "\"" );
 766                         $pu = array();
 767                 } else {
 768                         $this->output( "...no need to drop index '$index'\n" );
 769                 }
 770
 771                 if ( empty( $pu ) ) {
 772                         $this->output( "Creating index '$index'\n" );
 773                         $this->db->query( $good_def );
 774                 } else {
 775                         $this->output( "...index '$index' exists\n" );
 776                 }
 777         }
 778
 779         protected function checkRevUserFkey() {
 780                 if ( $this->fkeyDeltype( 'revision_rev_user_fkey' ) == 'r' ) {
 781                         $this->output( "...constraint 'revision_rev_user_fkey' is ON DELETE RESTRICT\n" );
 782                 } else {
 783                         $this->applyPatch( 'patch-revision_rev_user_fkey.sql', false, "Changing constraint 'revision_rev_user_fkey' to ON DELETE RESTRICT" );
 784                 }
 785         }
 786
 787         protected function checkIwlPrefix() {
 788                 if ( $this->db->indexExists( 'iwlinks', 'iwl_prefix' ) ) {
 789                         $this->applyPatch( 'patch-rename-iwl_prefix.sql', false, "Replacing index 'iwl_prefix' with 'iwl_prefix_title_from'" );
 790                 }
 791         }
 792
 793         protected function addInterwikiType() {
 794                 $this->applyPatch( 'patch-add_interwiki.sql', false, "Refreshing add_interwiki()" );
 795         }
 796
 797         protected function tsearchFixes() {
 798                 # Tweak the page_title tsearch2 trigger to filter out slashes
 799                 # This is create or replace, so harmless to call if not needed
 800                 $this->applyPatch( 'patch-ts2pagetitle.sql', false, "Refreshing ts2_page_title()" );
 801
 802                 # If the server is 8.3 or higher, rewrite the tsearch2 triggers
 803                 # in case they have the old 'default' versions
 804                 # Gather version numbers in case we need them
 805                 if ( $this->db->getServerVersion() >= 8.3 ) {
 806                         $this->applyPatch( 'patch-tsearch2funcs.sql', false, "Rewriting tsearch2 triggers" );
 807                 }
 808         }
 809 }