includes/installer/PostgresUpdater.php

   1 <?php
   2 /**
   3  * PostgreSQL-specific updater.
   4  *
   5  * @file
   6  * @ingroup Deployment
   7  */
   8
   9 /**
  10  * Class for handling updates to Postgres databases.
  11  *
  12  * @ingroup Deployment
  13  * @since 1.17
  14  */
  15
  16 class PostgresUpdater extends DatabaseUpdater {
  17
  18         /**
  19          * @var DatabasePostgres
  20          */
  21         protected $db;
  22
  23         /**
  24          * @todo FIXME: Postgres should use sequential updates like Mysql, Sqlite
  25          * and everybody else. It never got refactored like it should've.
  26          * @return array
  27          */
  28         protected function getCoreUpdateList() {
  29                 return array(
  30                         # rename tables 1.7.3
  31                         # r15791 Change reserved word table names "user" and "text"
  32                         array( 'renameTable', 'user', 'mwuser' ),
  33                         array( 'renameTable', 'text', 'pagecontent' ),
  34                         array( 'renameIndex', 'mwuser', 'user_pkey', 'mwuser_pkey'),
  35                         array( 'renameIndex', 'mwuser', 'user_user_name_key', 'mwuser_user_name_key' ),
  36                         array( 'renameIndex', 'pagecontent','text_pkey', 'pagecontent_pkey' ),
  37
  38                         # new sequences
  39                         array( 'addSequence', 'logging_log_id_seq'          ),
  40                         array( 'addSequence', 'page_restrictions_pr_id_seq' ),
  41
  42                         # renamed sequences
  43                         array( 'renameSequence', 'ipblocks_ipb_id_val', 'ipblocks_ipb_id_seq'         ),
  44                         array( 'renameSequence', 'rev_rev_id_val',      'revision_rev_id_seq'         ),
  45                         array( 'renameSequence', 'text_old_id_val',     'text_old_id_seq'             ),
  46                         array( 'renameSequence', 'rc_rc_id_seq',        'recentchanges_rc_id_seq'     ),
  47                         array( 'renameSequence', 'log_log_id_seq',      'logging_log_id_seq'          ),
  48                         array( 'renameSequence', 'pr_id_val',           'page_restrictions_pr_id_seq' ),
  49                         array( 'renameSequence', 'us_id_seq',           'uploadstash_us_id_seq' ),
  50
  51                         # since r58263
  52                         array( 'renameSequence', 'category_id_seq', 'category_cat_id_seq'),
  53
  54                         # new sequences if not renamed above
  55                         array( 'addSequence', 'logging', false, 'logging_log_id_seq' ),
  56                         array( 'addSequence', 'page_restrictions', false, 'page_restrictions_pr_id_seq' ),
  57                         array( 'addSequence', 'filearchive', 'fa_id', 'filearchive_fa_id_seq' ),
  58
  59                         # new tables
  60                         array( 'addTable', 'category',          'patch-category.sql' ),
  61                         array( 'addTable', 'page',              'patch-page.sql' ),
  62                         array( 'addTable', 'querycachetwo',     'patch-querycachetwo.sql' ),
  63                         array( 'addTable', 'page_props',        'patch-page_props.sql' ),
  64                         array( 'addTable', 'page_restrictions', 'patch-page_restrictions.sql' ),
  65                         array( 'addTable', 'profiling',         'patch-profiling.sql' ),
  66                         array( 'addTable', 'protected_titles',  'patch-protected_titles.sql' ),
  67                         array( 'addTable', 'redirect',          'patch-redirect.sql' ),
  68                         array( 'addTable', 'updatelog',         'patch-updatelog.sql' ),
  69                         array( 'addTable', 'change_tag',        'patch-change_tag.sql' ),
  70                         array( 'addTable', 'tag_summary',       'patch-tag_summary.sql' ),
  71                         array( 'addTable', 'valid_tag',         'patch-valid_tag.sql' ),
  72                         array( 'addTable', 'user_properties',   'patch-user_properties.sql' ),
  73                         array( 'addTable', 'log_search',        'patch-log_search.sql' ),
  74                         array( 'addTable', 'l10n_cache',        'patch-l10n_cache.sql' ),
  75                         array( 'addTable', 'iwlinks',           'patch-iwlinks.sql' ),
  76                         array( 'addTable', 'msg_resource',      'patch-msg_resource.sql' ),
  77                         array( 'addTable', 'msg_resource_links','patch-msg_resource_links.sql' ),
  78                         array( 'addTable', 'module_deps',       'patch-module_deps.sql' ),
  79                         array( 'addTable', 'uploadstash',       'patch-uploadstash.sql' ),
  80                         array( 'addTable', 'user_former_groups','patch-user_former_groups.sql' ),
  81                         array( 'addTable', 'config',            'patch-config.sql' ),
  82                         array( 'addTable', 'external_user','patch-external_user.sql' ),
  83
  84                         # Needed before new field
  85                         array( 'convertArchive2' ),
  86
  87                         # new fields
  88                         array( 'addPgField', 'updatelog',     'ul_value',             'TEXT' ),
  89                         array( 'addPgField', 'archive',       'ar_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
  90                         array( 'addPgField', 'archive',       'ar_len',               'INTEGER' ),
  91                         array( 'addPgField', 'archive',       'ar_page_id',           'INTEGER' ),
  92                         array( 'addPgField', 'archive',       'ar_parent_id',         'INTEGER' ),
  93                         array( 'addPgField', 'categorylinks', 'cl_sortkey_prefix',    "TEXT NOT NULL DEFAULT ''"),
  94                         array( 'addPgField', 'categorylinks', 'cl_collation',         "TEXT NOT NULL DEFAULT 0"),
  95                         array( 'addPgField', 'categorylinks', 'cl_type',              "TEXT NOT NULL DEFAULT 'page'"),
  96                         array( 'addPgField', 'image',         'img_sha1',             "TEXT NOT NULL DEFAULT ''" ),
  97                         array( 'addPgField', 'ipblocks',      'ipb_allow_usertalk',   'SMALLINT NOT NULL DEFAULT 0' ),
  98                         array( 'addPgField', 'ipblocks',      'ipb_anon_only',        'SMALLINT NOT NULL DEFAULT 0' ),
  99                         array( 'addPgField', 'ipblocks',      'ipb_by_text',          "TEXT NOT NULL DEFAULT ''" ),
 100                         array( 'addPgField', 'ipblocks',      'ipb_block_email',      'SMALLINT NOT NULL DEFAULT 0' ),
 101                         array( 'addPgField', 'ipblocks',      'ipb_create_account',   'SMALLINT NOT NULL DEFAULT 1' ),
 102                         array( 'addPgField', 'ipblocks',      'ipb_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 103                         array( 'addPgField', 'ipblocks',      'ipb_enable_autoblock', 'SMALLINT NOT NULL DEFAULT 1' ),
 104                         array( 'addPgField', 'filearchive',   'fa_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 105                         array( 'addPgField', 'logging',       'log_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 106                         array( 'addPgField', 'logging',       'log_id',               "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('logging_log_id_seq')" ),
 107                         array( 'addPgField', 'logging',       'log_params',           'TEXT' ),
 108                         array( 'addPgField', 'mwuser',        'user_editcount',       'INTEGER' ),
 109                         array( 'addPgField', 'mwuser',        'user_newpass_time',    'TIMESTAMPTZ' ),
 110                         array( 'addPgField', 'oldimage',      'oi_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 111                         array( 'addPgField', 'oldimage',      'oi_major_mime',        "TEXT NOT NULL DEFAULT 'unknown'" ),
 112                         array( 'addPgField', 'oldimage',      'oi_media_type',        'TEXT' ),
 113                         array( 'addPgField', 'oldimage',      'oi_metadata',          "BYTEA NOT NULL DEFAULT ''" ),
 114                         array( 'addPgField', 'oldimage',      'oi_minor_mime',        "TEXT NOT NULL DEFAULT 'unknown'" ),
 115                         array( 'addPgField', 'oldimage',      'oi_sha1',              "TEXT NOT NULL DEFAULT ''" ),
 116                         array( 'addPgField', 'page_restrictions', 'pr_id',            "INTEGER NOT NULL UNIQUE DEFAULT nextval('page_restrictions_pr_id_seq')" ),
 117                         array( 'addPgField', 'profiling',     'pf_memory',            'NUMERIC(18,10) NOT NULL DEFAULT 0' ),
 118                         array( 'addPgField', 'recentchanges', 'rc_deleted',           'SMALLINT NOT NULL DEFAULT 0' ),
 119                         array( 'addPgField', 'recentchanges', 'rc_log_action',        'TEXT' ),
 120                         array( 'addPgField', 'recentchanges', 'rc_log_type',          'TEXT' ),
 121                         array( 'addPgField', 'recentchanges', 'rc_logid',             'INTEGER NOT NULL DEFAULT 0' ),
 122                         array( 'addPgField', 'recentchanges', 'rc_new_len',           'INTEGER' ),
 123                         array( 'addPgField', 'recentchanges', 'rc_old_len',           'INTEGER' ),
 124                         array( 'addPgField', 'recentchanges', 'rc_params',            'TEXT' ),
 125                         array( 'addPgField', 'redirect',      'rd_interwiki',         'TEXT NULL' ),
 126                         array( 'addPgField', 'redirect',      'rd_fragment',          'TEXT NULL' ),
 127                         array( 'addPgField', 'revision',      'rev_deleted',          'SMALLINT NOT NULL DEFAULT 0' ),
 128                         array( 'addPgField', 'revision',      'rev_len',              'INTEGER' ),
 129                         array( 'addPgField', 'revision',      'rev_parent_id',        'INTEGER DEFAULT NULL' ),
 130                         array( 'addPgField', 'site_stats',    'ss_active_users',      "INTEGER DEFAULT '-1'" ),
 131                         array( 'addPgField', 'user_newtalk',  'user_last_timestamp',  'TIMESTAMPTZ' ),
 132                         array( 'addPgField', 'logging',       'log_user_text',        "TEXT NOT NULL DEFAULT ''" ),
 133                         array( 'addPgField', 'logging',       'log_page',             'INTEGER' ),
 134                         array( 'addPgField', 'interwiki',     'iw_api',               "TEXT NOT NULL DEFAULT ''"),
 135                         array( 'addPgField', 'interwiki',     'iw_wikiid',            "TEXT NOT NULL DEFAULT ''"),
 136                         array( 'addPgField', 'revision',      'rev_sha1',             "TEXT NOT NULL DEFAULT ''" ),
 137                         array( 'addPgField', 'archive',       'ar_sha1',              "TEXT NOT NULL DEFAULT ''" ),
 138                         array( 'addPgField', 'uploadstash',   'us_chunk_inx',         "INTEGER NULL" ),
 139                         array( 'addPgField', 'job',           'job_timestamp',        "TIMESTAMPTZ" ),
 140
 141                         # type changes
 142                         array( 'changeField', 'archive',       'ar_deleted',      'smallint', '' ),
 143                         array( 'changeField', 'archive',       'ar_minor_edit',   'smallint', 'ar_minor_edit::smallint DEFAULT 0' ),
 144                         array( 'changeField', 'filearchive',   'fa_deleted',      'smallint', '' ),
 145                         array( 'changeField', 'filearchive',   'fa_height',       'integer',  '' ),
 146                         array( 'changeField', 'filearchive',   'fa_metadata',     'bytea',    "decode(fa_metadata,'escape')" ),
 147                         array( 'changeField', 'filearchive',   'fa_size',         'integer',  '' ),
 148                         array( 'changeField', 'filearchive',   'fa_width',        'integer',  '' ),
 149                         array( 'changeField', 'filearchive',   'fa_storage_group', 'text',     '' ),
 150                         array( 'changeField', 'filearchive',   'fa_storage_key',  'text',     '' ),
 151                         array( 'changeField', 'image',         'img_metadata',    'bytea',    "decode(img_metadata,'escape')" ),
 152                         array( 'changeField', 'image',         'img_size',        'integer',  '' ),
 153                         array( 'changeField', 'image',         'img_width',       'integer',  '' ),
 154                         array( 'changeField', 'image',         'img_height',      'integer',  '' ),
 155                         array( 'changeField', 'interwiki',     'iw_local',        'smallint', 'iw_local::smallint DEFAULT 0' ),
 156                         array( 'changeField', 'interwiki',     'iw_trans',        'smallint', 'iw_trans::smallint DEFAULT 0' ),
 157                         array( 'changeField', 'ipblocks',      'ipb_auto',        'smallint', 'ipb_auto::smallint DEFAULT 0' ),
 158                         array( 'changeField', 'ipblocks',      'ipb_anon_only',   'smallint', "CASE WHEN ipb_anon_only=' ' THEN 0 ELSE ipb_anon_only::smallint END DEFAULT 0" ),
 159                         array( 'changeField', 'ipblocks',      'ipb_create_account', 'smallint', "CASE WHEN ipb_create_account=' ' THEN 0 ELSE ipb_create_account::smallint END DEFAULT 1" ),
 160                         array( 'changeField', 'ipblocks',      'ipb_enable_autoblock', 'smallint', "CASE WHEN ipb_enable_autoblock=' ' THEN 0 ELSE ipb_enable_autoblock::smallint END DEFAULT 1" ),
 161                         array( 'changeField', 'ipblocks',      'ipb_block_email', 'smallint', "CASE WHEN ipb_block_email=' ' THEN 0 ELSE ipb_block_email::smallint END DEFAULT 0" ),
 162                         array( 'changeField', 'ipblocks',      'ipb_address',     'text',     'ipb_address::text' ),
 163                         array( 'changeField', 'ipblocks',      'ipb_deleted',     'smallint', 'ipb_deleted::smallint DEFAULT 0' ),
 164                         array( 'changeField', 'mwuser',        'user_token',      'text',     '' ),
 165                         array( 'changeField', 'mwuser',        'user_email_token', 'text',     '' ),
 166                         array( 'changeField', 'objectcache',   'keyname',         'text',     '' ),
 167                         array( 'changeField', 'oldimage',      'oi_height',       'integer',  '' ),
 168                         array( 'changeField', 'oldimage',      'oi_metadata',     'bytea',    "decode(img_metadata,'escape')" ),
 169                         array( 'changeField', 'oldimage',      'oi_size',         'integer',  '' ),
 170                         array( 'changeField', 'oldimage',      'oi_width',        'integer',  '' ),
 171                         array( 'changeField', 'page',          'page_is_redirect', 'smallint', 'page_is_redirect::smallint DEFAULT 0' ),
 172                         array( 'changeField', 'page',          'page_is_new',     'smallint', 'page_is_new::smallint DEFAULT 0' ),
 173                         array( 'changeField', 'querycache',    'qc_value',        'integer',  '' ),
 174                         array( 'changeField', 'querycachetwo', 'qcc_value',       'integer',  '' ),
 175                         array( 'changeField', 'recentchanges', 'rc_bot',          'smallint', 'rc_bot::smallint DEFAULT 0' ),
 176                         array( 'changeField', 'recentchanges', 'rc_deleted',      'smallint', '' ),
 177                         array( 'changeField', 'recentchanges', 'rc_minor',        'smallint', 'rc_minor::smallint DEFAULT 0' ),
 178                         array( 'changeField', 'recentchanges', 'rc_new',          'smallint', 'rc_new::smallint DEFAULT 0' ),
 179                         array( 'changeField', 'recentchanges', 'rc_type',         'smallint', 'rc_type::smallint DEFAULT 0' ),
 180                         array( 'changeField', 'recentchanges', 'rc_patrolled',    'smallint', 'rc_patrolled::smallint DEFAULT 0' ),
 181                         array( 'changeField', 'revision',      'rev_deleted',     'smallint', 'rev_deleted::smallint DEFAULT 0' ),
 182                         array( 'changeField', 'revision',      'rev_minor_edit',  'smallint', 'rev_minor_edit::smallint DEFAULT 0' ),
 183                         array( 'changeField', 'templatelinks', 'tl_namespace',    'smallint', 'tl_namespace::smallint' ),
 184                         array( 'changeField', 'user_newtalk',  'user_ip',         'text',     'host(user_ip)' ),
 185                         array( 'changeField', 'uploadstash',   'us_image_bits',   'smallint', '' ),
 186
 187                         # null changes
 188                         array( 'changeNullableField', 'oldimage', 'oi_bits',       'NULL' ),
 189                         array( 'changeNullableField', 'oldimage', 'oi_timestamp',  'NULL' ),
 190                         array( 'changeNullableField', 'oldimage', 'oi_major_mime', 'NULL' ),
 191                         array( 'changeNullableField', 'oldimage', 'oi_minor_mime', 'NULL' ),
 192                         array( 'setDefault', 'image', 'img_metadata', '\'\x\'::bytea'),
 193                         array( 'changeNullableField', 'image', 'img_metadata', 'NOT NULL'),
 194                         array( 'setDefault', 'filearchive', 'fa_metadata', '\'\x\'::bytea'),
 195                         array( 'changeNullableField', 'filearchive', 'fa_metadata', 'NOT NULL'),
 196                         array( 'changeNullableField', 'recentchanges', 'rc_cur_id', 'NULL' ),
 197
 198                         array( 'checkOiDeleted' ),
 199
 200                         # New indexes
 201                         array( 'addPgIndex', 'archive',       'archive_user_text',      '(ar_user_text)' ),
 202                         array( 'addPgIndex', 'image',         'img_sha1',               '(img_sha1)' ),
 203                         array( 'addPgIndex', 'oldimage',      'oi_sha1',                '(oi_sha1)' ),
 204                         array( 'addPgIndex', 'page',          'page_mediawiki_title',   '(page_title) WHERE page_namespace = 8' ),
 205                         array( 'addPgIndex', 'pagelinks',     'pagelinks_title',        '(pl_title)' ),
 206                         array( 'addPgIndex', 'revision',      'rev_text_id_idx',        '(rev_text_id)' ),
 207                         array( 'addPgIndex', 'recentchanges', 'rc_timestamp_bot',       '(rc_timestamp) WHERE rc_bot = 0' ),
 208                         array( 'addPgIndex', 'templatelinks', 'templatelinks_from',     '(tl_from)' ),
 209                         array( 'addPgIndex', 'watchlist',     'wl_user',                '(wl_user)' ),
 210                         array( 'addPgIndex', 'logging',       'logging_user_type_time', '(log_user, log_type, log_timestamp)' ),
 211                         array( 'addPgIndex', 'logging',       'logging_page_id_time',   '(log_page,log_timestamp)' ),
 212                         array( 'addPgIndex', 'iwlinks',       'iwl_prefix_title_from',  '(iwl_prefix, iwl_title, iwl_from)' ),
 213                         array( 'addPgIndex', 'job',           'job_timestamp_idx',      '(job_timestamp)' ),
 214
 215                         array( 'checkIndex', 'pagelink_unique', array(
 216                                 array('pl_from', 'int4_ops', 'btree', 0),
 217                                 array('pl_namespace', 'int2_ops', 'btree', 0),
 218                                 array('pl_title', 'text_ops', 'btree', 0),
 219                         ),
 220                         'CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title)' ),
 221                         array( 'checkIndex', 'cl_sortkey', array(
 222                                 array('cl_to', 'text_ops', 'btree', 0),
 223                                 array('cl_sortkey', 'text_ops', 'btree', 0),
 224                                 array('cl_from', 'int4_ops', 'btree', 0),
 225                         ),
 226                         'CREATE INDEX cl_sortkey ON "categorylinks" USING "btree" ("cl_to", "cl_sortkey", "cl_from")' ),
 227                         array( 'checkIndex', 'logging_times', array(
 228                                 array('log_timestamp', 'timestamptz_ops', 'btree', 0),
 229                         ),
 230                         'CREATE INDEX "logging_times" ON "logging" USING "btree" ("log_timestamp")' ),
 231                         array( 'dropIndex', 'oldimage', 'oi_name' ),
 232                         array( 'checkIndex', 'oi_name_archive_name', array(
 233                                 array('oi_name', 'text_ops', 'btree', 0),
 234                                 array('oi_archive_name', 'text_ops', 'btree', 0),
 235                         ),
 236                         'CREATE INDEX "oi_name_archive_name" ON "oldimage" USING "btree" ("oi_name", "oi_archive_name")' ),
 237                         array( 'checkIndex', 'oi_name_timestamp', array(
 238                                 array('oi_name', 'text_ops', 'btree', 0),
 239                                 array('oi_timestamp', 'timestamptz_ops', 'btree', 0),
 240                         ),
 241                         'CREATE INDEX "oi_name_timestamp" ON "oldimage" USING "btree" ("oi_name", "oi_timestamp")' ),
 242                         array( 'checkIndex', 'page_main_title', array(
 243                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 244                         ),
 245                         'CREATE INDEX "page_main_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 0)' ),
 246                         array( 'checkIndex', 'page_mediawiki_title', array(
 247                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 248                         ),
 249                         'CREATE INDEX "page_mediawiki_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 8)' ),
 250                         array( 'checkIndex', 'page_project_title', array(
 251                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 252                         ),
 253                         'CREATE INDEX "page_project_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 4)' ),
 254                         array( 'checkIndex', 'page_talk_title', array(
 255                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 256                         ),
 257                         'CREATE INDEX "page_talk_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 1)' ),
 258                         array( 'checkIndex', 'page_user_title', array(
 259                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 260                         ),
 261                         'CREATE INDEX "page_user_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 2)' ),
 262                         array( 'checkIndex', 'page_utalk_title', array(
 263                                 array('page_title', 'text_pattern_ops', 'btree', 0),
 264                         ),
 265                         'CREATE INDEX "page_utalk_title" ON "page" USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 3)' ),
 266                         array( 'checkIndex', 'ts2_page_text', array(
 267                                 array('textvector', 'tsvector_ops', 'gist', 0),
 268                         ),
 269                         'CREATE INDEX "ts2_page_text" ON "pagecontent" USING "gist" ("textvector")' ),
 270                         array( 'checkIndex', 'ts2_page_title', array(
 271                                 array('titlevector', 'tsvector_ops', 'gist', 0),
 272                         ),
 273                         'CREATE INDEX "ts2_page_title" ON "page" USING "gist" ("titlevector")' ),
 274
 275                         array( 'checkOiNameConstraint' ),
 276                         array( 'checkPageDeletedTrigger' ),
 277                         array( 'checkRevUserFkey' ),
 278                         array( 'dropIndex', 'ipblocks', 'ipb_address'),
 279                         array( 'checkIndex', 'ipb_address_unique', array(
 280                                 array('ipb_address', 'text_ops', 'btree', 0),
 281                                 array('ipb_user',    'int4_ops', 'btree', 0),
 282                                 array('ipb_auto',    'int2_ops', 'btree', 0),
 283                                 array('ipb_anon_only', 'int2_ops', 'btree', 0),
 284                         ),
 285                         'CREATE UNIQUE INDEX ipb_address_unique ON ipblocks (ipb_address,ipb_user,ipb_auto,ipb_anon_only)' ),
 286
 287                         array( 'checkIwlPrefix' ),
 288
 289                         # All FK columns should be deferred
 290                         array( 'changeFkeyDeferrable', 'archive',          'ar_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 291                         array( 'changeFkeyDeferrable', 'categorylinks',    'cl_from',         'page(page_id) ON DELETE CASCADE' ),
 292                         array( 'changeFkeyDeferrable', 'externallinks',    'el_from',         'page(page_id) ON DELETE CASCADE' ),
 293                         array( 'changeFkeyDeferrable', 'filearchive',      'fa_deleted_user', 'mwuser(user_id) ON DELETE SET NULL' ),
 294                         array( 'changeFkeyDeferrable', 'filearchive',      'fa_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 295                         array( 'changeFkeyDeferrable', 'image',            'img_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 296                         array( 'changeFkeyDeferrable', 'imagelinks',       'il_from',         'page(page_id) ON DELETE CASCADE' ),
 297                         array( 'changeFkeyDeferrable', 'ipblocks',         'ipb_by',          'mwuser(user_id) ON DELETE CASCADE' ),
 298                         array( 'changeFkeyDeferrable', 'ipblocks',         'ipb_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 299                         array( 'changeFkeyDeferrable', 'langlinks',        'll_from',         'page(page_id) ON DELETE CASCADE' ),
 300                         array( 'changeFkeyDeferrable', 'logging',          'log_user',        'mwuser(user_id) ON DELETE SET NULL' ),
 301                         array( 'changeFkeyDeferrable', 'oldimage',         'oi_name',         'image(img_name) ON DELETE CASCADE ON UPDATE CASCADE' ),
 302                         array( 'changeFkeyDeferrable', 'oldimage',         'oi_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 303                         array( 'changeFkeyDeferrable', 'pagelinks',        'pl_from',         'page(page_id) ON DELETE CASCADE' ),
 304                         array( 'changeFkeyDeferrable', 'page_props',       'pp_page',         'page (page_id) ON DELETE CASCADE' ),
 305                         array( 'changeFkeyDeferrable', 'page_restrictions', 'pr_page',         'page(page_id) ON DELETE CASCADE' ),
 306                         array( 'changeFkeyDeferrable', 'protected_titles', 'pt_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 307                         array( 'changeFkeyDeferrable', 'recentchanges',    'rc_cur_id',       'page(page_id) ON DELETE SET NULL' ),
 308                         array( 'changeFkeyDeferrable', 'recentchanges',    'rc_user',         'mwuser(user_id) ON DELETE SET NULL' ),
 309                         array( 'changeFkeyDeferrable', 'redirect',         'rd_from',         'page(page_id) ON DELETE CASCADE' ),
 310                         array( 'changeFkeyDeferrable', 'revision',         'rev_page',        'page (page_id) ON DELETE CASCADE' ),
 311                         array( 'changeFkeyDeferrable', 'revision',         'rev_user',        'mwuser(user_id) ON DELETE RESTRICT' ),
 312                         array( 'changeFkeyDeferrable', 'templatelinks',    'tl_from',         'page(page_id) ON DELETE CASCADE' ),
 313                         array( 'changeFkeyDeferrable', 'user_groups',      'ug_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 314                         array( 'changeFkeyDeferrable', 'user_newtalk',     'user_id',         'mwuser(user_id) ON DELETE CASCADE' ),
 315                         array( 'changeFkeyDeferrable', 'user_properties',  'up_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 316                         array( 'changeFkeyDeferrable', 'watchlist',        'wl_user',         'mwuser(user_id) ON DELETE CASCADE' ),
 317
 318                         # r81574
 319                         array( 'addInterwikiType' ),
 320                         # end
 321                         array( 'tsearchFixes' ),
 322                 );
 323         }
 324
 325         protected function getOldGlobalUpdates() {
 326                 global $wgExtNewTables, $wgExtPGNewFields, $wgExtPGAlteredFields, $wgExtNewIndexes;
 327
 328                 $updates = array();
 329
 330                 # Add missing extension tables
 331                 foreach ( $wgExtNewTables as $tableRecord ) {
 332                         $updates[] = array(
 333                                 'addTable', $tableRecord[0], $tableRecord[1], true
 334                         );
 335                 }
 336
 337                 # Add missing extension fields
 338                 foreach ( $wgExtPGNewFields as $fieldRecord ) {
 339                         $updates[] = array(
 340                                         'addPgField', $fieldRecord[0], $fieldRecord[1],
 341                                         $fieldRecord[2]
 342                                 );
 343                 }
 344
 345                 # Change altered columns
 346                 foreach ( $wgExtPGAlteredFields as $fieldRecord ) {
 347                         $updates[] = array(
 348                                         'changeField', $fieldRecord[0], $fieldRecord[1],
 349                                         $fieldRecord[2]
 350                                 );
 351                 }
 352
 353                 # Add missing extension indexes
 354                 foreach ( $wgExtNewIndexes as $fieldRecord ) {
 355                         $updates[] = array(
 356                                         'addPgExtIndex', $fieldRecord[0], $fieldRecord[1],
 357                                         $fieldRecord[2]
 358                                 );
 359                 }
 360
 361                 return $updates;
 362         }
 363
 364         protected function describeTable( $table ) {
 365                 $q = <<<END
 366 SELECT attname, attnum FROM pg_namespace, pg_class, pg_attribute
 367         WHERE pg_class.relnamespace = pg_namespace.oid
 368           AND attrelid=pg_class.oid AND attnum > 0
 369           AND relname=%s AND nspname=%s
 370 END;
 371                 $res = $this->db->query( sprintf( $q,
 372                                 $this->db->addQuotes( $table ),
 373                                 $this->db->addQuotes( $this->db->getCoreSchema() ) ) );
 374                 if ( !$res ) {
 375                         return null;
 376                 }
 377
 378                 $cols = array();
 379                 foreach ( $res as $r ) {
 380                         $cols[] = array(
 381                                         "name" => $r[0],
 382                                         "ord" => $r[1],
 383                                 );
 384                 }
 385                 return $cols;
 386         }
 387
 388         function describeIndex( $idx ) {
 389                 // first fetch the key (which is a list of columns ords) and
 390                 // the table the index applies to (an oid)
 391                 $q = <<<END
 392 SELECT indkey, indrelid FROM pg_namespace, pg_class, pg_index
 393         WHERE nspname=%s
 394           AND pg_class.relnamespace = pg_namespace.oid
 395           AND relname=%s
 396           AND indexrelid=pg_class.oid
 397 END;
 398                 $res = $this->db->query(
 399                         sprintf(
 400                                 $q,
 401                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 402                                 $this->db->addQuotes( $idx )
 403                         )
 404                 );
 405                 if ( !$res ) {
 406                         return null;
 407                 }
 408                 if ( !( $r = $this->db->fetchRow( $res ) ) ) {
 409                         return null;
 410                 }
 411
 412                 $indkey = $r[0];
 413                 $relid = intval( $r[1] );
 414                 $indkeys = explode( ' ', $indkey );
 415
 416                 $colnames = array();
 417                 foreach ( $indkeys as $rid ) {
 418                         $query = <<<END
 419 SELECT attname FROM pg_class, pg_attribute
 420         WHERE attrelid=$relid
 421           AND attnum=%d
 422           AND attrelid=pg_class.oid
 423 END;
 424                         $r2 = $this->db->query( sprintf( $query, $rid ) );
 425                         if ( !$r2 ) {
 426                                 return null;
 427                         }
 428                         if ( !( $row2 = $this->db->fetchRow( $r2 ) ) ) {
 429                                 return null;
 430                         }
 431                         $colnames[] = $row2[0];
 432                 }
 433
 434                 return $colnames;
 435         }
 436
 437         function fkeyDeltype( $fkey ) {
 438                 $q = <<<END
 439 SELECT confdeltype FROM pg_constraint, pg_namespace
 440         WHERE connamespace=pg_namespace.oid
 441           AND nspname=%s
 442           AND conname=%s;
 443 END;
 444                 $r = $this->db->query(
 445                         sprintf(
 446                                 $q,
 447                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 448                                 $this->db->addQuotes( $fkey )
 449                         )
 450                 );
 451                 if ( !( $row = $this->db->fetchRow( $r ) ) ) {
 452                         return null;
 453                 }
 454                 return $row[0];
 455         }
 456
 457         function ruleDef( $table, $rule ) {
 458         $q = <<<END
 459 SELECT definition FROM pg_rules
 460         WHERE schemaname = %s
 461           AND tablename = %s
 462           AND rulename = %s
 463 END;
 464                 $r = $this->db->query(
 465                         sprintf(
 466                                 $q,
 467                                 $this->db->addQuotes( $this->db->getCoreSchema() ),
 468                                 $this->db->addQuotes( $table ),
 469                                 $this->db->addQuotes( $rule )
 470                         )
 471                 );
 472                 $row = $this->db->fetchRow( $r );
 473                 if ( !$row ) {
 474                         return null;
 475                 }
 476                 $d = $row[0];
 477                 return $d;
 478         }
 479
 480         protected function addSequence( $table, $pkey, $ns ) {
 481                 if ( !$this->db->sequenceExists( $ns ) ) {
 482                         $this->output( "Creating sequence $ns\n" );
 483                         $this->db->query( "CREATE SEQUENCE $ns" );
 484                         if( $pkey !== false ) {
 485                                 $this->setDefault( $table,  $pkey, '"nextval"(\'"' . $ns . '"\'::"regclass")' );
 486                         }
 487                 }
 488         }
 489
 490         protected function renameSequence( $old, $new ) {
 491                 if ( $this->db->sequenceExists( $new ) ) {
 492                         $this->output( "...sequence $new already exists.\n" );
 493                         return;
 494                 }
 495                 if ( $this->db->sequenceExists( $old ) ) {
 496                         $this->output( "Renaming sequence $old to $new\n" );
 497                         $this->db->query( "ALTER SEQUENCE $old RENAME TO $new" );
 498                 }
 499         }
 500
 501         protected function renameTable( $old, $new, $patch = false ) {
 502                 if ( $this->db->tableExists( $old ) ) {
 503                         $this->output( "Renaming table $old to $new\n" );
 504                         $old = $this->db->realTableName( $old, "quoted" );
 505                         $new = $this->db->realTableName( $new, "quoted" );
 506                         $this->db->query( "ALTER TABLE $old RENAME TO $new" );
 507                         if( $patch !== false ) {
 508                                 $this->applyPatch( $patch );
 509                         }
 510                 }
 511         }
 512
 513         protected function renameIndex( $table, $old, $new ) {
 514                 if ( $this->db->indexExists( $table, $old ) ) {
 515                         $this->output( "Renaming index $old to $new\n" );
 516                         $this->db->query( "ALTER INDEX $old RENAME TO $new" );
 517                 }
 518         }
 519
 520         protected function addPgField( $table, $field, $type ) {
 521                 $fi = $this->db->fieldInfo( $table, $field );
 522                 if ( !is_null( $fi ) ) {
 523                         $this->output( "...column '$table.$field' already exists\n" );
 524                         return;
 525                 } else {
 526                         $this->output( "Adding column '$table.$field'\n" );
 527                         $this->db->query( "ALTER TABLE $table ADD $field $type" );
 528                 }
 529         }
 530
 531         protected function changeField( $table, $field, $newtype, $default ) {
 532                 $fi = $this->db->fieldInfo( $table, $field );
 533                 if ( is_null( $fi ) ) {
 534                         $this->output( "...ERROR: expected column $table.$field to exist\n" );
 535                         exit( 1 );
 536                 }
 537
 538                 if ( $fi->type() === $newtype )
 539                         $this->output( "...column '$table.$field' is already of type '$newtype'\n" );
 540                 else {
 541                         $this->output( "Changing column type of '$table.$field' from '{$fi->type()}' to '$newtype'\n" );
 542                         $sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
 543                         if ( strlen( $default ) ) {
 544                                 $res = array();
 545                                 if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
 546                                         $sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
 547                                         $this->db->query( $sqldef );
 548                                         $default = preg_replace( '/\s*DEFAULT .+/', '', $default );
 549                                 }
 550                                 $sql .= " USING $default";
 551                         }
 552                         $this->db->query( $sql );
 553                 }
 554         }
 555
 556         protected function setDefault( $table, $field, $default ) {
 557
 558                 $info = $this->db->fieldInfo( $table, $field );
 559                 if ( $info->defaultValue() !== $default ) {
 560                         $this->output( "Changing '$table.$field' default value\n" );
 561                         $this->db->query( "ALTER TABLE $table ALTER $field SET DEFAULT " . $default );
 562                 }
 563         }
 564
 565         protected function changeNullableField( $table, $field, $null) {
 566                 $fi = $this->db->fieldInfo( $table, $field );
 567                 if ( is_null( $fi ) ) {
 568                         $this->output( "...ERROR: expected column $table.$field to exist\n" );
 569                         exit( 1 );
 570                 }
 571                 if ( $fi->isNullable() ) {
 572                         # # It's NULL - does it need to be NOT NULL?
 573                         if ( 'NOT NULL' === $null ) {
 574                                 $this->output( "Changing '$table.$field' to not allow NULLs\n" );
 575                                 $this->db->query( "ALTER TABLE $table ALTER $field SET NOT NULL" );
 576                         } else {
 577                                 $this->output( "...column '$table.$field' is already set as NULL\n" );
 578                         }
 579                 } else {
 580                         # # It's NOT NULL - does it need to be NULL?
 581                         if ( 'NULL' === $null ) {
 582                                 $this->output( "Changing '$table.$field' to allow NULLs\n" );
 583                                 $this->db->query( "ALTER TABLE $table ALTER $field DROP NOT NULL" );
 584                         }
 585                         else {
 586                                 $this->output( "...column '$table.$field' is already set as NOT NULL\n" );
 587                         }
 588                 }
 589         }
 590
 591         public function addPgIndex( $table, $index, $type ) {
 592                 if ( $this->db->indexExists( $table, $index ) ) {
 593                         $this->output( "...index '$index' on table '$table' already exists\n" );
 594                 } else {
 595                         $this->output( "Creating index '$index' on table '$table' $type\n" );
 596                         $this->db->query( "CREATE INDEX $index ON $table $type" );
 597                 }
 598         }
 599
 600         public function addPgExtIndex( $table, $index, $type ) {
 601                 if ( $this->db->indexExists( $table, $index ) ) {
 602                         $this->output( "...index '$index' on table '$table' already exists\n" );
 603                 } else {
 604                         $this->output( "Creating index '$index' on table '$table'\n" );
 605                         if ( preg_match( '/^\(/', $type ) ) {
 606                                 $this->db->query( "CREATE INDEX $index ON $table $type" );
 607                         } else {
 608                                 $this->applyPatch( $type, true );
 609                         }
 610                 }
 611         }
 612
 613         protected function changeFkeyDeferrable( $table, $field, $clause ) {
 614                 $fi = $this->db->fieldInfo( $table, $field );
 615                 if ( is_null( $fi ) ) {
 616                         $this->output( "WARNING! Column '$table.$field' does not exist but it should! Please report this.\n" );
 617                         return;
 618                 }
 619                 if ( $fi->is_deferred() && $fi->is_deferrable() ) {
 620                         return;
 621                 }
 622                 $this->output( "Altering column '$table.$field' to be DEFERRABLE INITIALLY DEFERRED\n" );
 623                 $conname = $fi->conname();
 624                 if ( $fi->conname() ) {
 625                         $conclause = "CONSTRAINT \"$conname\"";
 626                         $command = "ALTER TABLE $table DROP CONSTRAINT $conname";
 627                         $this->db->query( $command );
 628                 } else {
 629                         $this->output( "Column '$table.$field' does not have a foreign key constraint, will be added\n" );
 630                         $conclause = "";
 631                 }
 632                 $command = "ALTER TABLE $table ADD $conclause FOREIGN KEY ($field) REFERENCES $clause DEFERRABLE INITIALLY DEFERRED";
 633                 $this->db->query( $command );
 634         }
 635
 636         protected function convertArchive2() {
 637                 if ( $this->db->tableExists( "archive2" ) ) {
 638                         $this->output( "Converting 'archive2' back to normal archive table\n" );
 639                         if ( $this->db->ruleExists( 'archive', 'archive_insert' ) ) {
 640                                 $this->output( "Dropping rule 'archive_insert'\n" );
 641                                 $this->db->query( 'DROP RULE archive_insert ON archive' );
 642                         }
 643                         if ( $this->db->ruleExists( 'archive', 'archive_delete' ) ) {
 644                                 $this->output( "Dropping rule 'archive_delete'\n" );
 645                                 $this->db->query( 'DROP RULE archive_delete ON archive' );
 646                         }
 647                         $this->applyPatch( 'patch-remove-archive2.sql' );
 648                 } else {
 649                         $this->output( "...obsolete table 'archive2' does not exist\n" );
 650                 }
 651         }
 652
 653         protected function checkOiDeleted() {
 654                 if ( $this->db->fieldInfo( 'oldimage', 'oi_deleted' )->type() !== 'smallint' ) {
 655                         $this->output( "Changing 'oldimage.oi_deleted' to type 'smallint'\n" );
 656                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted DROP DEFAULT" );
 657                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted TYPE SMALLINT USING (oi_deleted::smallint)" );
 658                         $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted SET DEFAULT 0" );
 659                 } else {
 660                         $this->output( "...column 'oldimage.oi_deleted' is already of type 'smallint'\n" );
 661                 }
 662         }
 663
 664         protected function checkOiNameConstraint() {
 665                 if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascaded" ) ) {
 666                         $this->output( "...table 'oldimage' has correct cascading delete/update foreign key to image\n" );
 667                 } else {
 668                         if ( $this->db->hasConstraint( "oldimage_oi_name_fkey" ) ) {
 669                                 $this->db->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey" );
 670                         }
 671                         if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascade" ) ) {
 672                                 $this->db->query( "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey_cascade" );
 673                         }
 674                         $this->output( "Making foreign key on table 'oldimage' (to image) a cascade delete/update\n" );
 675                         $this->db->query( "ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascaded " .
 676                                 "FOREIGN KEY (oi_name) REFERENCES image(img_name) ON DELETE CASCADE ON UPDATE CASCADE" );
 677                 }
 678         }
 679
 680         protected function checkPageDeletedTrigger() {
 681                 if ( !$this->db->triggerExists( 'page', 'page_deleted' ) ) {
 682                         $this->output( "Adding function and trigger 'page_deleted' to table 'page'\n" );
 683                         $this->applyPatch( 'patch-page_deleted.sql' );
 684                 } else {
 685                         $this->output( "...table 'page' has 'page_deleted' trigger\n" );
 686                 }
 687         }
 688
 689         protected function dropIndex( $table, $index ) {
 690                 if ( $this->db->indexExists( $table, $index ) ) {
 691                         $this->output( "Dropping obsolete index '$index'\n" );
 692                         $this->db->query( "DROP INDEX \"". $index ."\"" );
 693                 }
 694         }
 695
 696         protected function checkIndex( $index, $should_be, $good_def ) {
 697                 $pu = $this->db->indexAttributes( $index );
 698                 if ( !empty( $pu ) && $pu != $should_be ) {
 699                         $this->output( "Dropping obsolete version of index '$index'\n" );
 700                         $this->db->query( "DROP INDEX \"". $index ."\"" );
 701                         $pu = array();
 702                 } else {
 703                         $this->output( "...no need to drop index '$index'\n" );
 704                 }
 705
 706                 if ( empty( $pu ) ) {
 707                         $this->output( "Creating index '$index'\n" );
 708                         $this->db->query( $good_def );
 709                 } else {
 710                         $this->output( "...index '$index' exists\n" );
 711                 }
 712         }
 713
 714         protected function checkRevUserFkey() {
 715                 if ( $this->fkeyDeltype( 'revision_rev_user_fkey' ) == 'r' ) {
 716                         $this->output( "...constraint 'revision_rev_user_fkey' is ON DELETE RESTRICT\n" );
 717                 } else {
 718                         $this->output( "Changing constraint 'revision_rev_user_fkey' to ON DELETE RESTRICT\n" );
 719                         $this->applyPatch( 'patch-revision_rev_user_fkey.sql' );
 720                 }
 721         }
 722
 723         protected function checkIwlPrefix() {
 724                 if ( $this->db->indexExists( 'iwlinks', 'iwl_prefix' ) ) {
 725                         $this->output( "Replacing index 'iwl_prefix' with 'iwl_prefix_from_title'...\n" );
 726                         $this->applyPatch( 'patch-rename-iwl_prefix.sql' );
 727                 }
 728         }
 729
 730         protected function addInterwikiType() {
 731                 $this->output( "Refreshing add_interwiki()...\n" );
 732                 $this->applyPatch( 'patch-add_interwiki.sql' );
 733         }
 734
 735         protected function tsearchFixes() {
 736                 # Tweak the page_title tsearch2 trigger to filter out slashes
 737                 # This is create or replace, so harmless to call if not needed
 738                 $this->output( "Refreshing ts2_page_title()...\n" );
 739                 $this->applyPatch( 'patch-ts2pagetitle.sql' );
 740
 741                 # If the server is 8.3 or higher, rewrite the tsearch2 triggers
 742                 # in case they have the old 'default' versions
 743                 # Gather version numbers in case we need them
 744                 if ( $this->db->getServerVersion() >= 8.3 ) {
 745                         $this->output( "Rewriting tsearch2 triggers...\n" );
 746                         $this->applyPatch( 'patch-tsearch2funcs.sql' );
 747                 }
 748         }
 749 }