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