PostgresUpdater.php

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<?php
class PostgresUpdater extends DatabaseUpdater {
 
    protected $db;
 
    protected function getCoreUpdateList() {
        return array(
            # rename tables 1.7.3
            # r15791 Change reserved word table names "user" and "text"
            array( 'renameTable', 'user', 'mwuser' ),
            array( 'renameTable', 'text', 'pagecontent' ),
            array( 'renameIndex', 'mwuser', 'user_pkey', 'mwuser_pkey' ),
            array( 'renameIndex', 'mwuser', 'user_user_name_key', 'mwuser_user_name_key' ),
            array( 'renameIndex', 'pagecontent', 'text_pkey', 'pagecontent_pkey' ),
 
            # renamed sequences
            array( 'renameSequence', 'ipblocks_ipb_id_val', 'ipblocks_ipb_id_seq' ),
            array( 'renameSequence', 'rev_rev_id_val', 'revision_rev_id_seq' ),
            array( 'renameSequence', 'text_old_id_val', 'text_old_id_seq' ),
            array( 'renameSequence', 'rc_rc_id_seq', 'recentchanges_rc_id_seq' ),
            array( 'renameSequence', 'log_log_id_seq', 'logging_log_id_seq' ),
            array( 'renameSequence', 'pr_id_val', 'page_restrictions_pr_id_seq' ),
            array( 'renameSequence', 'us_id_seq', 'uploadstash_us_id_seq' ),
 
            # since r58263
            array( 'renameSequence', 'category_id_seq', 'category_cat_id_seq' ),
 
            # new sequences if not renamed above
            array( 'addSequence', 'logging', false, 'logging_log_id_seq' ),
            array( 'addSequence', 'page_restrictions', false, 'page_restrictions_pr_id_seq' ),
            array( 'addSequence', 'filearchive', 'fa_id', 'filearchive_fa_id_seq' ),
            array( 'addSequence', 'archive', false, 'archive_ar_id_seq' ),
            array( 'addSequence', 'externallinks', false, 'externallinks_el_id_seq' ),
 
            # new tables
            array( 'addTable', 'category', 'patch-category.sql' ),
            array( 'addTable', 'page', 'patch-page.sql' ),
            array( 'addTable', 'querycachetwo', 'patch-querycachetwo.sql' ),
            array( 'addTable', 'page_props', 'patch-page_props.sql' ),
            array( 'addTable', 'page_restrictions', 'patch-page_restrictions.sql' ),
            array( 'addTable', 'profiling', 'patch-profiling.sql' ),
            array( 'addTable', 'protected_titles', 'patch-protected_titles.sql' ),
            array( 'addTable', 'redirect', 'patch-redirect.sql' ),
            array( 'addTable', 'updatelog', 'patch-updatelog.sql' ),
            array( 'addTable', 'change_tag', 'patch-change_tag.sql' ),
            array( 'addTable', 'tag_summary', 'patch-tag_summary.sql' ),
            array( 'addTable', 'valid_tag', 'patch-valid_tag.sql' ),
            array( 'addTable', 'user_properties', 'patch-user_properties.sql' ),
            array( 'addTable', 'log_search', 'patch-log_search.sql' ),
            array( 'addTable', 'l10n_cache', 'patch-l10n_cache.sql' ),
            array( 'addTable', 'iwlinks', 'patch-iwlinks.sql' ),
            array( 'addTable', 'msg_resource', 'patch-msg_resource.sql' ),
            array( 'addTable', 'msg_resource_links', 'patch-msg_resource_links.sql' ),
            array( 'addTable', 'module_deps', 'patch-module_deps.sql' ),
            array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
            array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),
            array( 'addTable', 'sites', 'patch-sites.sql' ),
 
            # Needed before new field
            array( 'convertArchive2' ),
 
            # new fields
            array( 'addPgField', 'updatelog', 'ul_value', 'TEXT' ),
            array( 'addPgField', 'archive', 'ar_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'archive', 'ar_len', 'INTEGER' ),
            array( 'addPgField', 'archive', 'ar_page_id', 'INTEGER' ),
            array( 'addPgField', 'archive', 'ar_parent_id', 'INTEGER' ),
            array( 'addPgField', 'archive', 'ar_content_model', 'TEXT' ),
            array( 'addPgField', 'archive', 'ar_content_format', 'TEXT' ),
            array( 'addPgField', 'categorylinks', 'cl_sortkey_prefix', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'categorylinks', 'cl_collation', "TEXT NOT NULL DEFAULT 0" ),
            array( 'addPgField', 'categorylinks', 'cl_type', "TEXT NOT NULL DEFAULT 'page'" ),
            array( 'addPgField', 'image', 'img_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'ipblocks', 'ipb_allow_usertalk', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'ipblocks', 'ipb_anon_only', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'ipblocks', 'ipb_by_text', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'ipblocks', 'ipb_block_email', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'ipblocks', 'ipb_create_account', 'SMALLINT NOT NULL DEFAULT 1' ),
            array( 'addPgField', 'ipblocks', 'ipb_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'ipblocks', 'ipb_enable_autoblock', 'SMALLINT NOT NULL DEFAULT 1' ),
            array( 'addPgField', 'ipblocks', 'ipb_parent_block_id',
                'INTEGER DEFAULT NULL REFERENCES ipblocks(ipb_id) ' .
                'ON DELETE SET NULL DEFERRABLE INITIALLY DEFERRED' ),
            array( 'addPgField', 'filearchive', 'fa_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'filearchive', 'fa_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'logging', 'log_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'logging', 'log_id',
                "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('logging_log_id_seq')" ),
            array( 'addPgField', 'logging', 'log_params', 'TEXT' ),
            array( 'addPgField', 'mwuser', 'user_editcount', 'INTEGER' ),
            array( 'addPgField', 'mwuser', 'user_newpass_time', 'TIMESTAMPTZ' ),
            array( 'addPgField', 'oldimage', 'oi_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'oldimage', 'oi_major_mime', "TEXT NOT NULL DEFAULT 'unknown'" ),
            array( 'addPgField', 'oldimage', 'oi_media_type', 'TEXT' ),
            array( 'addPgField', 'oldimage', 'oi_metadata', "BYTEA NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'oldimage', 'oi_minor_mime', "TEXT NOT NULL DEFAULT 'unknown'" ),
            array( 'addPgField', 'oldimage', 'oi_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'page', 'page_content_model', 'TEXT' ),
            array( 'addPgField', 'page_restrictions', 'pr_id',
                "INTEGER NOT NULL UNIQUE DEFAULT nextval('page_restrictions_pr_id_seq')" ),
            array( 'addPgField', 'profiling', 'pf_memory', 'NUMERIC(18,10) NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'recentchanges', 'rc_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'recentchanges', 'rc_log_action', 'TEXT' ),
            array( 'addPgField', 'recentchanges', 'rc_log_type', 'TEXT' ),
            array( 'addPgField', 'recentchanges', 'rc_logid', 'INTEGER NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'recentchanges', 'rc_new_len', 'INTEGER' ),
            array( 'addPgField', 'recentchanges', 'rc_old_len', 'INTEGER' ),
            array( 'addPgField', 'recentchanges', 'rc_params', 'TEXT' ),
            array( 'addPgField', 'redirect', 'rd_interwiki', 'TEXT NULL' ),
            array( 'addPgField', 'redirect', 'rd_fragment', 'TEXT NULL' ),
            array( 'addPgField', 'revision', 'rev_deleted', 'SMALLINT NOT NULL DEFAULT 0' ),
            array( 'addPgField', 'revision', 'rev_len', 'INTEGER' ),
            array( 'addPgField', 'revision', 'rev_parent_id', 'INTEGER DEFAULT NULL' ),
            array( 'addPgField', 'revision', 'rev_content_model', 'TEXT' ),
            array( 'addPgField', 'revision', 'rev_content_format', 'TEXT' ),
            array( 'addPgField', 'site_stats', 'ss_active_users', "INTEGER DEFAULT '-1'" ),
            array( 'addPgField', 'user_newtalk', 'user_last_timestamp', 'TIMESTAMPTZ' ),
            array( 'addPgField', 'logging', 'log_user_text', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'logging', 'log_page', 'INTEGER' ),
            array( 'addPgField', 'interwiki', 'iw_api', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'interwiki', 'iw_wikiid', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'revision', 'rev_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'archive', 'ar_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'uploadstash', 'us_chunk_inx', "INTEGER NULL" ),
            array( 'addPgField', 'job', 'job_timestamp', "TIMESTAMPTZ" ),
            array( 'addPgField', 'job', 'job_random', "INTEGER NOT NULL DEFAULT 0" ),
            array( 'addPgField', 'job', 'job_attempts', "INTEGER NOT NULL DEFAULT 0" ),
            array( 'addPgField', 'job', 'job_token', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'job', 'job_token_timestamp', "TIMESTAMPTZ" ),
            array( 'addPgField', 'job', 'job_sha1', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'archive', 'ar_id',
                "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('archive_ar_id_seq')" ),
            array( 'addPgField', 'externallinks', 'el_id',
                "INTEGER NOT NULL PRIMARY KEY DEFAULT nextval('externallinks_el_id_seq')" ),
            array( 'addPgField', 'uploadstash', 'us_props', "BYTEA" ),
 
            # type changes
            array( 'changeField', 'archive', 'ar_deleted', 'smallint', '' ),
            array( 'changeField', 'archive', 'ar_minor_edit', 'smallint',
                'ar_minor_edit::smallint DEFAULT 0' ),
            array( 'changeField', 'filearchive', 'fa_deleted', 'smallint', '' ),
            array( 'changeField', 'filearchive', 'fa_height', 'integer', '' ),
            array( 'changeField', 'filearchive', 'fa_metadata', 'bytea', "decode(fa_metadata,'escape')" ),
            array( 'changeField', 'filearchive', 'fa_size', 'integer', '' ),
            array( 'changeField', 'filearchive', 'fa_width', 'integer', '' ),
            array( 'changeField', 'filearchive', 'fa_storage_group', 'text', '' ),
            array( 'changeField', 'filearchive', 'fa_storage_key', 'text', '' ),
            array( 'changeField', 'image', 'img_metadata', 'bytea', "decode(img_metadata,'escape')" ),
            array( 'changeField', 'image', 'img_size', 'integer', '' ),
            array( 'changeField', 'image', 'img_width', 'integer', '' ),
            array( 'changeField', 'image', 'img_height', 'integer', '' ),
            array( 'changeField', 'interwiki', 'iw_local', 'smallint', 'iw_local::smallint' ),
            array( 'changeField', 'interwiki', 'iw_trans', 'smallint', 'iw_trans::smallint DEFAULT 0' ),
            array( 'changeField', 'ipblocks', 'ipb_auto', 'smallint', 'ipb_auto::smallint DEFAULT 0' ),
            array( 'changeField', 'ipblocks', 'ipb_anon_only', 'smallint',
                "CASE WHEN ipb_anon_only=' ' THEN 0 ELSE ipb_anon_only::smallint END DEFAULT 0" ),
            array( 'changeField', 'ipblocks', 'ipb_create_account', 'smallint',
                "CASE WHEN ipb_create_account=' ' THEN 0 ELSE ipb_create_account::smallint END DEFAULT 1" ),
            array( 'changeField', 'ipblocks', 'ipb_enable_autoblock', 'smallint',
                "CASE WHEN ipb_enable_autoblock=' ' THEN 0 ELSE ipb_enable_autoblock::smallint END DEFAULT 1" ),
            array( 'changeField', 'ipblocks', 'ipb_block_email', 'smallint',
                "CASE WHEN ipb_block_email=' ' THEN 0 ELSE ipb_block_email::smallint END DEFAULT 0" ),
            array( 'changeField', 'ipblocks', 'ipb_address', 'text', 'ipb_address::text' ),
            array( 'changeField', 'ipblocks', 'ipb_deleted', 'smallint', 'ipb_deleted::smallint DEFAULT 0' ),
            array( 'changeField', 'mwuser', 'user_token', 'text', '' ),
            array( 'changeField', 'mwuser', 'user_email_token', 'text', '' ),
            array( 'changeField', 'objectcache', 'keyname', 'text', '' ),
            array( 'changeField', 'oldimage', 'oi_height', 'integer', '' ),
            array( 'changeField', 'oldimage', 'oi_metadata', 'bytea', "decode(img_metadata,'escape')" ),
            array( 'changeField', 'oldimage', 'oi_size', 'integer', '' ),
            array( 'changeField', 'oldimage', 'oi_width', 'integer', '' ),
            array( 'changeField', 'page', 'page_is_redirect', 'smallint',
                'page_is_redirect::smallint DEFAULT 0' ),
            array( 'changeField', 'page', 'page_is_new', 'smallint', 'page_is_new::smallint DEFAULT 0' ),
            array( 'changeField', 'querycache', 'qc_value', 'integer', '' ),
            array( 'changeField', 'querycachetwo', 'qcc_value', 'integer', '' ),
            array( 'changeField', 'recentchanges', 'rc_bot', 'smallint', 'rc_bot::smallint DEFAULT 0' ),
            array( 'changeField', 'recentchanges', 'rc_deleted', 'smallint', '' ),
            array( 'changeField', 'recentchanges', 'rc_minor', 'smallint', 'rc_minor::smallint DEFAULT 0' ),
            array( 'changeField', 'recentchanges', 'rc_new', 'smallint', 'rc_new::smallint DEFAULT 0' ),
            array( 'changeField', 'recentchanges', 'rc_type', 'smallint', 'rc_type::smallint DEFAULT 0' ),
            array( 'changeField', 'recentchanges', 'rc_patrolled', 'smallint',
                'rc_patrolled::smallint DEFAULT 0' ),
            array( 'changeField', 'revision', 'rev_deleted', 'smallint', 'rev_deleted::smallint DEFAULT 0' ),
            array( 'changeField', 'revision', 'rev_minor_edit', 'smallint',
                'rev_minor_edit::smallint DEFAULT 0' ),
            array( 'changeField', 'templatelinks', 'tl_namespace', 'smallint', 'tl_namespace::smallint' ),
            array( 'changeField', 'user_newtalk', 'user_ip', 'text', 'host(user_ip)' ),
            array( 'changeField', 'uploadstash', 'us_image_bits', 'smallint', '' ),
            array( 'changeField', 'profiling', 'pf_time', 'float', '' ),
            array( 'changeField', 'profiling', 'pf_memory', 'float', '' ),
 
            # null changes
            array( 'changeNullableField', 'oldimage', 'oi_bits', 'NULL' ),
            array( 'changeNullableField', 'oldimage', 'oi_timestamp', 'NULL' ),
            array( 'changeNullableField', 'oldimage', 'oi_major_mime', 'NULL' ),
            array( 'changeNullableField', 'oldimage', 'oi_minor_mime', 'NULL' ),
            array( 'changeNullableField', 'image', 'img_metadata', 'NOT NULL' ),
            array( 'changeNullableField', 'filearchive', 'fa_metadata', 'NOT NULL' ),
            array( 'changeNullableField', 'recentchanges', 'rc_cur_id', 'NULL' ),
            array( 'changeNullableField', 'recentchanges', 'rc_cur_time', 'NULL' ),
 
            array( 'checkOiDeleted' ),
 
            # New indexes
            array( 'addPgIndex', 'archive', 'archive_user_text', '(ar_user_text)' ),
            array( 'addPgIndex', 'image', 'img_sha1', '(img_sha1)' ),
            array( 'addPgIndex', 'ipblocks', 'ipb_parent_block_id', '(ipb_parent_block_id)' ),
            array( 'addPgIndex', 'oldimage', 'oi_sha1', '(oi_sha1)' ),
            array( 'addPgIndex', 'page', 'page_mediawiki_title', '(page_title) WHERE page_namespace = 8' ),
            array( 'addPgIndex', 'pagelinks', 'pagelinks_title', '(pl_title)' ),
            array( 'addPgIndex', 'page_props', 'pp_propname_page', '(pp_propname, pp_page)' ),
            array( 'addPgIndex', 'revision', 'rev_text_id_idx', '(rev_text_id)' ),
            array( 'addPgIndex', 'recentchanges', 'rc_timestamp_bot', '(rc_timestamp) WHERE rc_bot = 0' ),
            array( 'addPgIndex', 'templatelinks', 'templatelinks_from', '(tl_from)' ),
            array( 'addPgIndex', 'watchlist', 'wl_user', '(wl_user)' ),
            array( 'addPgIndex', 'logging', 'logging_user_type_time',
                '(log_user, log_type, log_timestamp)' ),
            array( 'addPgIndex', 'logging', 'logging_page_id_time', '(log_page,log_timestamp)' ),
            array( 'addPgIndex', 'iwlinks', 'iwl_prefix_from_title', '(iwl_prefix, iwl_from, iwl_title)' ),
            array( 'addPgIndex', 'iwlinks', 'iwl_prefix_title_from', '(iwl_prefix, iwl_title, iwl_from)' ),
            array( 'addPgIndex', 'job', 'job_timestamp_idx', '(job_timestamp)' ),
            array( 'addPgIndex', 'job', 'job_sha1', '(job_sha1)' ),
            array( 'addPgIndex', 'job', 'job_cmd_token', '(job_cmd, job_token, job_random)' ),
            array( 'addPgIndex', 'job', 'job_cmd_token_id', '(job_cmd, job_token, job_id)' ),
            array( 'addPgIndex', 'filearchive', 'fa_sha1', '(fa_sha1)' ),
            array( 'addPgIndex', 'logging', 'logging_user_text_type_time',
                '(log_user_text, log_type, log_timestamp)' ),
            array( 'addPgIndex', 'logging', 'logging_user_text_time', '(log_user_text, log_timestamp)' ),
 
            array( 'checkIndex', 'pagelink_unique', array(
                array( 'pl_from', 'int4_ops', 'btree', 0 ),
                array( 'pl_namespace', 'int2_ops', 'btree', 0 ),
                array( 'pl_title', 'text_ops', 'btree', 0 ),
            ),
                'CREATE UNIQUE INDEX pagelink_unique ON pagelinks (pl_from,pl_namespace,pl_title)' ),
            array( 'checkIndex', 'cl_sortkey', array(
                array( 'cl_to', 'text_ops', 'btree', 0 ),
                array( 'cl_sortkey', 'text_ops', 'btree', 0 ),
                array( 'cl_from', 'int4_ops', 'btree', 0 ),
            ),
                'CREATE INDEX cl_sortkey ON "categorylinks" ' .
                    'USING "btree" ("cl_to", "cl_sortkey", "cl_from")' ),
            array( 'checkIndex', 'iwl_prefix_title_from', array(
                array( 'iwl_prefix', 'text_ops', 'btree', 0 ),
                array( 'iwl_title', 'text_ops', 'btree', 0 ),
                array( 'iwl_from', 'int4_ops', 'btree', 0 ),
            ),
            'CREATE INDEX iwl_prefix_title_from ON "iwlinks" ' .
                'USING "btree" ("iwl_prefix", "iwl_title", "iwl_from")' ),
            array( 'checkIndex', 'logging_times', array(
                array( 'log_timestamp', 'timestamptz_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "logging_times" ON "logging" USING "btree" ("log_timestamp")' ),
            array( 'dropIndex', 'oldimage', 'oi_name' ),
            array( 'checkIndex', 'oi_name_archive_name', array(
                array( 'oi_name', 'text_ops', 'btree', 0 ),
                array( 'oi_archive_name', 'text_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "oi_name_archive_name" ON "oldimage" ' .
                'USING "btree" ("oi_name", "oi_archive_name")' ),
            array( 'checkIndex', 'oi_name_timestamp', array(
                array( 'oi_name', 'text_ops', 'btree', 0 ),
                array( 'oi_timestamp', 'timestamptz_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "oi_name_timestamp" ON "oldimage" ' .
                'USING "btree" ("oi_name", "oi_timestamp")' ),
            array( 'checkIndex', 'page_main_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_main_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 0)' ),
            array( 'checkIndex', 'page_mediawiki_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_mediawiki_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") WHERE ("page_namespace" = 8)' ),
            array( 'checkIndex', 'page_project_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_project_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") ' .
                'WHERE ("page_namespace" = 4)' ),
            array( 'checkIndex', 'page_talk_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_talk_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") ' .
                'WHERE ("page_namespace" = 1)' ),
            array( 'checkIndex', 'page_user_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_user_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") WHERE ' .
                '("page_namespace" = 2)' ),
            array( 'checkIndex', 'page_utalk_title', array(
                array( 'page_title', 'text_pattern_ops', 'btree', 0 ),
            ),
            'CREATE INDEX "page_utalk_title" ON "page" ' .
                'USING "btree" ("page_title" "text_pattern_ops") ' .
                'WHERE ("page_namespace" = 3)' ),
            array( 'checkIndex', 'ts2_page_text', array(
                array( 'textvector', 'tsvector_ops', 'gist', 0 ),
            ),
            'CREATE INDEX "ts2_page_text" ON "pagecontent" USING "gist" ("textvector")' ),
            array( 'checkIndex', 'ts2_page_title', array(
                array( 'titlevector', 'tsvector_ops', 'gist', 0 ),
            ),
            'CREATE INDEX "ts2_page_title" ON "page" USING "gist" ("titlevector")' ),
 
            array( 'checkOiNameConstraint' ),
            array( 'checkPageDeletedTrigger' ),
            array( 'checkRevUserFkey' ),
            array( 'dropIndex', 'ipblocks', 'ipb_address' ),
            array( 'checkIndex', 'ipb_address_unique', array(
                array( 'ipb_address', 'text_ops', 'btree', 0 ),
                array( 'ipb_user', 'int4_ops', 'btree', 0 ),
                array( 'ipb_auto', 'int2_ops', 'btree', 0 ),
                array( 'ipb_anon_only', 'int2_ops', 'btree', 0 ),
            ),
            'CREATE UNIQUE INDEX ipb_address_unique ' .
                'ON ipblocks (ipb_address,ipb_user,ipb_auto,ipb_anon_only)' ),
 
            array( 'checkIwlPrefix' ),
 
            # All FK columns should be deferred
            array( 'changeFkeyDeferrable', 'archive', 'ar_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'categorylinks', 'cl_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'externallinks', 'el_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'filearchive', 'fa_deleted_user',
                'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'filearchive', 'fa_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'image', 'img_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'imagelinks', 'il_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'ipblocks', 'ipb_by', 'mwuser(user_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'ipblocks', 'ipb_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'ipblocks', 'ipb_parent_block_id',
                'ipblocks(ipb_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'langlinks', 'll_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'logging', 'log_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'oldimage', 'oi_name',
                'image(img_name) ON DELETE CASCADE ON UPDATE CASCADE' ),
            array( 'changeFkeyDeferrable', 'oldimage', 'oi_user', 'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'pagelinks', 'pl_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'page_props', 'pp_page', 'page (page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'page_restrictions', 'pr_page',
                'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'protected_titles', 'pt_user',
                'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'recentchanges', 'rc_cur_id',
                'page(page_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'recentchanges', 'rc_user',
                'mwuser(user_id) ON DELETE SET NULL' ),
            array( 'changeFkeyDeferrable', 'redirect', 'rd_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'revision', 'rev_page', 'page (page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'revision', 'rev_user', 'mwuser(user_id) ON DELETE RESTRICT' ),
            array( 'changeFkeyDeferrable', 'templatelinks', 'tl_from', 'page(page_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'user_groups', 'ug_user', 'mwuser(user_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'user_newtalk', 'user_id', 'mwuser(user_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'user_properties', 'up_user',
                'mwuser(user_id) ON DELETE CASCADE' ),
            array( 'changeFkeyDeferrable', 'watchlist', 'wl_user', 'mwuser(user_id) ON DELETE CASCADE' ),
 
            # r81574
            array( 'addInterwikiType' ),
            # end
            array( 'tsearchFixes' ),
 
            // 1.23
            array( 'addPgField', 'recentchanges', 'rc_source', "TEXT NOT NULL DEFAULT ''" ),
            array( 'addPgField', 'page', 'page_links_updated', "TIMESTAMPTZ NULL" ),
            array( 'addPgField', 'mwuser', 'user_password_expires', 'TIMESTAMPTZ NULL' ),
            array( 'changeFieldPurgeTable', 'l10n_cache', 'lc_value', 'bytea', "replace(lc_value,'\','\\\\')::bytea" ),
        );
    }
 
    protected function getOldGlobalUpdates() {
        global $wgExtNewTables, $wgExtPGNewFields, $wgExtPGAlteredFields, $wgExtNewIndexes;
 
        $updates = array();
 
        # Add missing extension tables
        foreach ( $wgExtNewTables as $tableRecord ) {
            $updates[] = array(
                'addTable', $tableRecord[0], $tableRecord[1], true
            );
        }
 
        # Add missing extension fields
        foreach ( $wgExtPGNewFields as $fieldRecord ) {
            $updates[] = array(
                'addPgField', $fieldRecord[0], $fieldRecord[1],
                $fieldRecord[2]
            );
        }
 
        # Change altered columns
        foreach ( $wgExtPGAlteredFields as $fieldRecord ) {
            $updates[] = array(
                'changeField', $fieldRecord[0], $fieldRecord[1],
                $fieldRecord[2]
            );
        }
 
        # Add missing extension indexes
        foreach ( $wgExtNewIndexes as $fieldRecord ) {
            $updates[] = array(
                'addPgExtIndex', $fieldRecord[0], $fieldRecord[1],
                $fieldRecord[2]
            );
        }
 
        return $updates;
    }
 
    protected function describeTable( $table ) {
        $q = <<<END
SELECT attname, attnum FROM pg_namespace, pg_class, pg_attribute
    WHERE pg_class.relnamespace = pg_namespace.oid
      AND attrelid=pg_class.oid AND attnum > 0
      AND relname=%s AND nspname=%s
END;
        $res = $this->db->query( sprintf( $q,
            $this->db->addQuotes( $table ),
            $this->db->addQuotes( $this->db->getCoreSchema() ) ) );
        if ( !$res ) {
            return null;
        }
 
        $cols = array();
        foreach ( $res as $r ) {
            $cols[] = array(
                "name" => $r[0],
                "ord" => $r[1],
            );
        }
 
        return $cols;
    }
 
    function describeIndex( $idx ) {
        // first fetch the key (which is a list of columns ords) and
        // the table the index applies to (an oid)
        $q = <<<END
SELECT indkey, indrelid FROM pg_namespace, pg_class, pg_index
    WHERE nspname=%s
      AND pg_class.relnamespace = pg_namespace.oid
      AND relname=%s
      AND indexrelid=pg_class.oid
END;
        $res = $this->db->query(
            sprintf(
                $q,
                $this->db->addQuotes( $this->db->getCoreSchema() ),
                $this->db->addQuotes( $idx )
            )
        );
        if ( !$res ) {
            return null;
        }
        if ( !( $r = $this->db->fetchRow( $res ) ) ) {
            return null;
        }
 
        $indkey = $r[0];
        $relid = intval( $r[1] );
        $indkeys = explode( ' ', $indkey );
 
        $colnames = array();
        foreach ( $indkeys as $rid ) {
            $query = <<<END
SELECT attname FROM pg_class, pg_attribute
    WHERE attrelid=$relid
      AND attnum=%d
      AND attrelid=pg_class.oid
END;
            $r2 = $this->db->query( sprintf( $query, $rid ) );
            if ( !$r2 ) {
                return null;
            }
            if ( !( $row2 = $this->db->fetchRow( $r2 ) ) ) {
                return null;
            }
            $colnames[] = $row2[0];
        }
 
        return $colnames;
    }
 
    function fkeyDeltype( $fkey ) {
        $q = <<<END
SELECT confdeltype FROM pg_constraint, pg_namespace
    WHERE connamespace=pg_namespace.oid
      AND nspname=%s
      AND conname=%s;
END;
        $r = $this->db->query(
            sprintf(
                $q,
                $this->db->addQuotes( $this->db->getCoreSchema() ),
                $this->db->addQuotes( $fkey )
            )
        );
        if ( !( $row = $this->db->fetchRow( $r ) ) ) {
            return null;
        }
 
        return $row[0];
    }
 
    function ruleDef( $table, $rule ) {
        $q = <<<END
SELECT definition FROM pg_rules
    WHERE schemaname = %s
      AND tablename = %s
      AND rulename = %s
END;
        $r = $this->db->query(
            sprintf(
                $q,
                $this->db->addQuotes( $this->db->getCoreSchema() ),
                $this->db->addQuotes( $table ),
                $this->db->addQuotes( $rule )
            )
        );
        $row = $this->db->fetchRow( $r );
        if ( !$row ) {
            return null;
        }
        $d = $row[0];
 
        return $d;
    }
 
    protected function addSequence( $table, $pkey, $ns ) {
        if ( !$this->db->sequenceExists( $ns ) ) {
            $this->output( "Creating sequence $ns\n" );
            $this->db->query( "CREATE SEQUENCE $ns" );
            if ( $pkey !== false ) {
                $this->setDefault( $table, $pkey, '"nextval"(\'"' . $ns . '"\'::"regclass")' );
            }
        }
    }
 
    protected function renameSequence( $old, $new ) {
        if ( $this->db->sequenceExists( $new ) ) {
            $this->output( "...sequence $new already exists.\n" );
 
            return;
        }
        if ( $this->db->sequenceExists( $old ) ) {
            $this->output( "Renaming sequence $old to $new\n" );
            $this->db->query( "ALTER SEQUENCE $old RENAME TO $new" );
        }
    }
 
    protected function renameTable( $old, $new, $patch = false ) {
        if ( $this->db->tableExists( $old ) ) {
            $this->output( "Renaming table $old to $new\n" );
            $old = $this->db->realTableName( $old, "quoted" );
            $new = $this->db->realTableName( $new, "quoted" );
            $this->db->query( "ALTER TABLE $old RENAME TO $new" );
            if ( $patch !== false ) {
                $this->applyPatch( $patch );
            }
        }
    }
 
    protected function renameIndex(
        $table, $old, $new, $skipBothIndexExistWarning = false, $a = false, $b = false
    ) {
        // First requirement: the table must exist
        if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
            $this->output( "...skipping: '$table' table doesn't exist yet.\n" );
 
            return;
        }
 
        // Second requirement: the new index must be missing
        if ( $this->db->indexExists( $table, $new, __METHOD__ ) ) {
            $this->output( "...index $new already set on $table table.\n" );
            if ( !$skipBothIndexExistWarning
                && $this->db->indexExists( $table, $old, __METHOD__ )
            ) {
                $this->output( "...WARNING: $old still exists, despite it has been " .
                    "renamed into $new (which also exists).\n" .
                    "            $old should be manually removed if not needed anymore.\n" );
            }
 
            return;
        }
 
        // Third requirement: the old index must exist
        if ( !$this->db->indexExists( $table, $old, __METHOD__ ) ) {
            $this->output( "...skipping: index $old doesn't exist.\n" );
 
            return;
        }
 
        $this->db->query( "ALTER INDEX $old RENAME TO $new" );
    }
 
    protected function addPgField( $table, $field, $type ) {
        $fi = $this->db->fieldInfo( $table, $field );
        if ( !is_null( $fi ) ) {
            $this->output( "...column '$table.$field' already exists\n" );
 
            return;
        } else {
            $this->output( "Adding column '$table.$field'\n" );
            $this->db->query( "ALTER TABLE $table ADD $field $type" );
        }
    }
 
    protected function changeField( $table, $field, $newtype, $default ) {
        $fi = $this->db->fieldInfo( $table, $field );
        if ( is_null( $fi ) ) {
            $this->output( "...ERROR: expected column $table.$field to exist\n" );
            exit( 1 );
        }
 
        if ( $fi->type() === $newtype ) {
            $this->output( "...column '$table.$field' is already of type '$newtype'\n" );
        } else {
            $this->output( "Changing column type of '$table.$field' from '{$fi->type()}' to '$newtype'\n" );
            $sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
            if ( strlen( $default ) ) {
                $res = array();
                if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
                    $sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
                    $this->db->query( $sqldef );
                    $default = preg_replace( '/\s*DEFAULT .+/', '', $default );
                }
                $sql .= " USING $default";
            }
            $this->db->query( $sql );
        }
    }
 
    protected function changeFieldPurgeTable( $table, $field, $newtype, $default ) {
        ## For a cache table, empty it if the field needs to be changed, because the old contents
        ## may be corrupted.  If the column is already the desired type, refrain from purging.
        $fi = $this->db->fieldInfo( $table, $field );
        if ( is_null( $fi ) ) {
            $this->output( "...ERROR: expected column $table.$field to exist\n" );
            exit( 1 );
        }
 
        if ( $fi->type() === $newtype ) {
            $this->output( "...column '$table.$field' is already of type '$newtype'\n" );
        } else {
            $this->output( "Purging data from cache table '$table'\n" );
            $this->db->query("DELETE from $table" );
            $this->output( "Changing column type of '$table.$field' from '{$fi->type()}' to '$newtype'\n" );
            $sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
            if ( strlen( $default ) ) {
                $res = array();
                if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
                    $sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
                    $this->db->query( $sqldef );
                    $default = preg_replace( '/\s*DEFAULT .+/', '', $default );
                }
                $sql .= " USING $default";
            }
            $this->db->query( $sql );
        }
    }
 
    protected function setDefault( $table, $field, $default ) {
 
        $info = $this->db->fieldInfo( $table, $field );
        if ( $info->defaultValue() !== $default ) {
            $this->output( "Changing '$table.$field' default value\n" );
            $this->db->query( "ALTER TABLE $table ALTER $field SET DEFAULT " . $default );
        }
    }
 
    protected function changeNullableField( $table, $field, $null ) {
        $fi = $this->db->fieldInfo( $table, $field );
        if ( is_null( $fi ) ) {
            $this->output( "...ERROR: expected column $table.$field to exist\n" );
            exit( 1 );
        }
        if ( $fi->isNullable() ) {
            # # It's NULL - does it need to be NOT NULL?
            if ( 'NOT NULL' === $null ) {
                $this->output( "Changing '$table.$field' to not allow NULLs\n" );
                $this->db->query( "ALTER TABLE $table ALTER $field SET NOT NULL" );
            } else {
                $this->output( "...column '$table.$field' is already set as NULL\n" );
            }
        } else {
            # # It's NOT NULL - does it need to be NULL?
            if ( 'NULL' === $null ) {
                $this->output( "Changing '$table.$field' to allow NULLs\n" );
                $this->db->query( "ALTER TABLE $table ALTER $field DROP NOT NULL" );
            } else {
                $this->output( "...column '$table.$field' is already set as NOT NULL\n" );
            }
        }
    }
 
    public function addPgIndex( $table, $index, $type ) {
        if ( $this->db->indexExists( $table, $index ) ) {
            $this->output( "...index '$index' on table '$table' already exists\n" );
        } else {
            $this->output( "Creating index '$index' on table '$table' $type\n" );
            $this->db->query( "CREATE INDEX $index ON $table $type" );
        }
    }
 
    public function addPgExtIndex( $table, $index, $type ) {
        if ( $this->db->indexExists( $table, $index ) ) {
            $this->output( "...index '$index' on table '$table' already exists\n" );
        } else {
            if ( preg_match( '/^\(/', $type ) ) {
                $this->output( "Creating index '$index' on table '$table'\n" );
                $this->db->query( "CREATE INDEX $index ON $table $type" );
            } else {
                $this->applyPatch( $type, true, "Creating index '$index' on table '$table'" );
            }
        }
    }
 
    protected function changeFkeyDeferrable( $table, $field, $clause ) {
        $fi = $this->db->fieldInfo( $table, $field );
        if ( is_null( $fi ) ) {
            $this->output( "WARNING! Column '$table.$field' does not exist but it should! " .
                "Please report this.\n" );
 
            return;
        }
        if ( $fi->is_deferred() && $fi->is_deferrable() ) {
            return;
        }
        $this->output( "Altering column '$table.$field' to be DEFERRABLE INITIALLY DEFERRED\n" );
        $conname = $fi->conname();
        if ( $fi->conname() ) {
            $conclause = "CONSTRAINT \"$conname\"";
            $command = "ALTER TABLE $table DROP CONSTRAINT $conname";
            $this->db->query( $command );
        } else {
            $this->output( "Column '$table.$field' does not have a foreign key " .
                "constraint, will be added\n" );
            $conclause = "";
        }
        $command =
            "ALTER TABLE $table ADD $conclause " .
            "FOREIGN KEY ($field) REFERENCES $clause DEFERRABLE INITIALLY DEFERRED";
        $this->db->query( $command );
    }
 
    protected function convertArchive2() {
        if ( $this->db->tableExists( "archive2" ) ) {
            if ( $this->db->ruleExists( 'archive', 'archive_insert' ) ) {
                $this->output( "Dropping rule 'archive_insert'\n" );
                $this->db->query( 'DROP RULE archive_insert ON archive' );
            }
            if ( $this->db->ruleExists( 'archive', 'archive_delete' ) ) {
                $this->output( "Dropping rule 'archive_delete'\n" );
                $this->db->query( 'DROP RULE archive_delete ON archive' );
            }
            $this->applyPatch(
                'patch-remove-archive2.sql',
                false,
                "Converting 'archive2' back to normal archive table"
            );
        } else {
            $this->output( "...obsolete table 'archive2' does not exist\n" );
        }
    }
 
    protected function checkOiDeleted() {
        if ( $this->db->fieldInfo( 'oldimage', 'oi_deleted' )->type() !== 'smallint' ) {
            $this->output( "Changing 'oldimage.oi_deleted' to type 'smallint'\n" );
            $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted DROP DEFAULT" );
            $this->db->query(
                "ALTER TABLE oldimage ALTER oi_deleted TYPE SMALLINT USING (oi_deleted::smallint)" );
            $this->db->query( "ALTER TABLE oldimage ALTER oi_deleted SET DEFAULT 0" );
        } else {
            $this->output( "...column 'oldimage.oi_deleted' is already of type 'smallint'\n" );
        }
    }
 
    protected function checkOiNameConstraint() {
        if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascaded" ) ) {
            $this->output( "...table 'oldimage' has correct cascading delete/update " .
                "foreign key to image\n" );
        } else {
            if ( $this->db->hasConstraint( "oldimage_oi_name_fkey" ) ) {
                $this->db->query(
                    "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey" );
            }
            if ( $this->db->hasConstraint( "oldimage_oi_name_fkey_cascade" ) ) {
                $this->db->query(
                    "ALTER TABLE oldimage DROP CONSTRAINT oldimage_oi_name_fkey_cascade" );
            }
            $this->output( "Making foreign key on table 'oldimage' (to image) a cascade delete/update\n" );
            $this->db->query(
                "ALTER TABLE oldimage ADD CONSTRAINT oldimage_oi_name_fkey_cascaded " .
                "FOREIGN KEY (oi_name) REFERENCES image(img_name) " .
                "ON DELETE CASCADE ON UPDATE CASCADE" );
        }
    }
 
    protected function checkPageDeletedTrigger() {
        if ( !$this->db->triggerExists( 'page', 'page_deleted' ) ) {
            $this->applyPatch(
                'patch-page_deleted.sql',
                false,
                "Adding function and trigger 'page_deleted' to table 'page'"
            );
        } else {
            $this->output( "...table 'page' has 'page_deleted' trigger\n" );
        }
    }
 
    protected function dropIndex( $table, $index, $patch = '', $fullpath = false ) {
        if ( $this->db->indexExists( $table, $index ) ) {
            $this->output( "Dropping obsolete index '$index'\n" );
            $this->db->query( "DROP INDEX \"" . $index . "\"" );
        }
    }
 
    protected function checkIndex( $index, $should_be, $good_def ) {
        $pu = $this->db->indexAttributes( $index );
        if ( !empty( $pu ) && $pu != $should_be ) {
            $this->output( "Dropping obsolete version of index '$index'\n" );
            $this->db->query( "DROP INDEX \"" . $index . "\"" );
            $pu = array();
        } else {
            $this->output( "...no need to drop index '$index'\n" );
        }
 
        if ( empty( $pu ) ) {
            $this->output( "Creating index '$index'\n" );
            $this->db->query( $good_def );
        } else {
            $this->output( "...index '$index' exists\n" );
        }
    }
 
    protected function checkRevUserFkey() {
        if ( $this->fkeyDeltype( 'revision_rev_user_fkey' ) == 'r' ) {
            $this->output( "...constraint 'revision_rev_user_fkey' is ON DELETE RESTRICT\n" );
        } else {
            $this->applyPatch(
                'patch-revision_rev_user_fkey.sql',
                false,
                "Changing constraint 'revision_rev_user_fkey' to ON DELETE RESTRICT"
            );
        }
    }
 
    protected function checkIwlPrefix() {
        if ( $this->db->indexExists( 'iwlinks', 'iwl_prefix' ) ) {
            $this->applyPatch(
                'patch-rename-iwl_prefix.sql',
                false,
                "Replacing index 'iwl_prefix' with 'iwl_prefix_title_from'"
            );
        }
    }
 
    protected function addInterwikiType() {
        $this->applyPatch( 'patch-add_interwiki.sql', false, "Refreshing add_interwiki()" );
    }
 
    protected function tsearchFixes() {
        # Tweak the page_title tsearch2 trigger to filter out slashes
        # This is create or replace, so harmless to call if not needed
        $this->applyPatch( 'patch-ts2pagetitle.sql', false, "Refreshing ts2_page_title()" );
 
        # If the server is 8.3 or higher, rewrite the tsearch2 triggers
        # in case they have the old 'default' versions
        # Gather version numbers in case we need them
        if ( $this->db->getServerVersion() >= 8.3 ) {
            $this->applyPatch( 'patch-tsearch2funcs.sql', false, "Rewriting tsearch2 triggers" );
        }
    }
}