includes/installer/PostgresUpdater.php
<?php
/**
* PostgreSQL-specific updater.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Installer
*/
namespace MediaWiki\Installer;
use FixInconsistentRedirects;
use MigrateExternallinks;
use MigrateRevisionActorTemp;
use MigrateRevisionCommentTemp;
use PopulateUserIsTemp;
use UpdateRestrictions;
use Wikimedia\Rdbms\DatabasePostgres;
/**
* Class for handling updates to Postgres databases.
*
* @ingroup Installer
* @since 1.17
*/
class PostgresUpdater extends DatabaseUpdater {
/**
* @var DatabasePostgres
*/
protected $db;
/**
* @return array
*/
protected function getCoreUpdateList() {
return [
// Exception to the sequential updates. Renaming pagecontent and mwuser.
// Introduced in 1.36.
[ 'renameTable', 'pagecontent', 'text' ],
// Introduced in 1.37.
[ 'renameTable', 'mwuser', 'user' ],
// 1.36
[ 'setDefault', 'bot_passwords', 'bp_token', '' ],
[ 'changeField', 'comment', 'comment_id', 'BIGINT', '' ],
[ 'changeField', 'slots', 'slot_revision_id', 'BIGINT', '' ],
[ 'changeField', 'slots', 'slot_content_id', 'BIGINT', '' ],
[ 'changeField', 'slots', 'slot_origin', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_total_edits', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_good_articles', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_total_pages', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_users', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_active_users', 'BIGINT', '' ],
[ 'changeField', 'site_stats', 'ss_images', 'BIGINT', '' ],
[ 'dropFkey', 'user_properties', 'up_user' ],
[ 'addIndex', 'user_properties', 'user_properties_pkey', 'patch-user_properties-pk.sql' ],
[ 'changeField', 'log_search', 'ls_value', 'VARCHAR(255)', '' ],
[ 'changeField', 'content', 'content_id', 'BIGINT', '' ],
[ 'changeField', 'l10n_cache', 'lc_value', 'TEXT', '' ],
[ 'changeField', 'l10n_cache', 'lc_key', 'VARCHAR(255)', '' ],
[ 'addIndex', 'l10n_cache', 'l10n_cache_pkey', 'patch-l10n_cache-pk.sql' ],
[ 'addIndex', 'module_deps', 'module_deps_pkey', 'patch-module_deps-pk.sql' ],
[ 'changeField', 'redirect', 'rd_namespace', 'INT', 'rd_namespace::INT DEFAULT 0' ],
[ 'setDefault', 'redirect', 'rd_title', '' ],
[ 'setDefault', 'redirect', 'rd_from', 0 ],
[ 'dropFkey', 'redirect', 'rd_from' ],
[ 'changeField', 'redirect', 'rd_interwiki', 'VARCHAR(32)', '' ],
[ 'dropFkey', 'pagelinks', 'pl_from' ],
[ 'changeField', 'pagelinks', 'pl_namespace', 'INT', 'pl_namespace::INT DEFAULT 0' ],
[ 'setDefault', 'pagelinks', 'pl_title', '' ],
[ 'addPgIndex', 'pagelinks', 'pl_namespace', '(pl_namespace,pl_title,pl_from)' ],
[ 'addPgIndex', 'pagelinks', 'pl_backlinks_namespace',
'(pl_from_namespace,pl_namespace,pl_title,pl_from)' ],
[ 'dropPgIndex', 'pagelinks', 'pagelink_unique' ],
[ 'dropPgIndex', 'pagelinks', 'pagelinks_title' ],
[ 'dropFkey', 'templatelinks', 'tl_from' ],
[ 'dropPgIndex', 'templatelinks', 'templatelinks_unique' ],
[ 'dropPgIndex', 'templatelinks', 'templatelinks_from' ],
[ 'dropFkey', 'imagelinks', 'il_from' ],
[ 'setDefault', 'imagelinks', 'il_to', '' ],
[ 'addPgIndex', 'imagelinks', 'il_to', '(il_to, il_from)' ],
[ 'addPgIndex', 'imagelinks', 'il_backlinks_namespace',
'(il_from_namespace, il_to, il_from)' ],
[ 'dropPgIndex', 'imagelinks', 'il_from' ],
[ 'dropFkey', 'langlinks', 'll_from' ],
[ 'addIndex', 'langlinks', 'langlinks_pkey', 'patch-langlinks-pk.sql' ],
[ 'renameIndex', 'langlinks', 'langlinks_lang_title', 'll_lang' ],
[ 'setDefault', 'langlinks', 'll_lang', '' ],
[ 'setDefault', 'langlinks', 'll_from', 0 ],
[ 'setDefault', 'langlinks', 'll_title', '' ],
[ 'changeNullableField', 'langlinks', 'll_lang', 'NOT NULL', true ],
[ 'changeNullableField', 'langlinks', 'll_title', 'NOT NULL', true ],
[ 'addIndex', 'iwlinks', 'iwlinks_pkey', 'patch-iwlinks-pk.sql' ],
[ 'renameIndex', 'category', 'category_title', 'cat_title' ],
[ 'renameIndex', 'category', 'category_pages', 'cat_pages' ],
[ 'dropSequence', 'watchlist_expiry', 'watchlist_expiry_we_item_seq' ],
[ 'changeField', 'change_tag_def', 'ctd_count', 'BIGINT', 'ctd_count::BIGINT DEFAULT 0' ],
[ 'dropDefault', 'change_tag_def', 'ctd_user_defined' ],
[ 'dropFkey', 'ipblocks_restrictions', 'ir_ipb_id' ],
[ 'setDefault', 'querycache', 'qc_value', 0 ],
[ 'changeField', 'querycache', 'qc_namespace', 'INT', 'qc_namespace::INT DEFAULT 0' ],
[ 'setDefault', 'querycache', 'qc_title', '' ],
[ 'renameIndex', 'querycache', 'querycache_type_value', 'qc_type' ],
[ 'renameIndex', 'querycachetwo', 'querycachetwo_type_value', 'qcc_type' ],
[ 'renameIndex', 'querycachetwo', 'querycachetwo_title', 'qcc_title' ],
[ 'renameIndex', 'querycachetwo', 'querycachetwo_titletwo', 'qcc_titletwo' ],
[ 'dropFkey', 'page_restrictions', 'pr_page' ],
[ 'addPgIndex', 'page_restrictions', 'pr_pagetype', '(pr_page, pr_type)', true ],
[ 'addPgIndex', 'page_restrictions', 'pr_typelevel', '(pr_type, pr_level)' ],
[ 'addPgIndex', 'page_restrictions', 'pr_level', '(pr_level)' ],
[ 'addPgIndex', 'page_restrictions', 'pr_cascade', '(pr_cascade)' ],
[ 'changePrimaryKey', 'page_restrictions', [ 'pr_id' ], 'page_restrictions_pk' ],
[ 'changeNullableField', 'page_restrictions', 'pr_page', 'NOT NULL', true ],
[ 'dropFkey', 'user_groups', 'ug_user' ],
[ 'setDefault', 'user_groups', 'ug_user', 0 ],
[ 'setDefault', 'user_groups', 'ug_group', '' ],
[ 'renameIndex', 'user_groups', 'user_groups_group', 'ug_group' ],
[ 'renameIndex', 'user_groups', 'user_groups_expiry', 'ug_expiry' ],
[ 'setDefault', 'querycache_info', 'qci_type', '' ],
[ 'setDefault', 'querycache_info', 'qci_timestamp', '1970-01-01 00:00:00+00' ],
[ 'changeNullableField', 'querycache_info', 'qci_type', 'NOT NULL', true ],
[ 'changeNullableField', 'querycache_info', 'qci_timestamp', 'NOT NULL', true ],
[ 'addIndex', 'querycache_info', 'querycache_info_pkey', 'patch-querycache_info-pk.sql' ],
[ 'setDefault', 'watchlist', 'wl_title', '' ],
[ 'changeField', 'watchlist', 'wl_namespace', 'INT', 'wl_namespace::INT DEFAULT 0' ],
[ 'dropFkey', 'watchlist', 'wl_user' ],
[ 'dropPgIndex', 'watchlist', 'wl_user_namespace_title' ],
[ 'addPgIndex', 'watchlist', 'namespace_title', '(wl_namespace, wl_title)' ],
[ 'checkIndex', 'wl_user', [
[ 'wl_user', 'text_ops', 'btree', 1 ],
[ 'wl_namespace', 'int4_ops', 'btree', 1 ],
[ 'wl_title', 'text_ops', 'btree', 1 ],
],
'CREATE UNIQUE INDEX "wl_user" ON "watchlist" (wl_user, wl_namespace, wl_title)'
],
[ 'changeField', 'sites', 'site_domain', 'VARCHAR(255)', '' ],
[ 'renameIndex', 'sites', 'site_global_key', 'sites_global_key' ],
[ 'renameIndex', 'sites', 'site_type', 'sites_type' ],
[ 'renameIndex', 'sites', 'site_group', 'sites_group' ],
[ 'renameIndex', 'sites', 'site_source', 'sites_source' ],
[ 'renameIndex', 'sites', 'site_language', 'sites_language' ],
[ 'renameIndex', 'sites', 'site_protocol', 'sites_protocol' ],
[ 'renameIndex', 'sites', 'site_domain', 'sites_domain' ],
[ 'renameIndex', 'sites', 'site_forward', 'sites_forward' ],
[ 'dropFkey', 'user_newtalk', 'user_id' ],
[ 'renameIndex', 'user_newtalk', 'user_newtalk_id', 'un_user_id' ],
[ 'renameIndex', 'user_newtalk', 'user_newtalk_ip', 'un_user_ip' ],
[ 'changeField', 'interwiki', 'iw_prefix', 'VARCHAR(32)', '' ],
[ 'changeField', 'interwiki', 'iw_wikiid', 'VARCHAR(64)', '' ],
[ 'dropFkey', 'protected_titles', 'pt_user' ],
[ 'changeNullableField', 'protected_titles', 'pt_user', 'NOT NULL', true ],
[ 'changeNullableField', 'protected_titles', 'pt_expiry', 'NOT NULL', true ],
[ 'changeField', 'protected_titles', 'pt_reason_id', 'BIGINT', '' ],
[ 'dropDefault', 'protected_titles', 'pt_create_perm' ],
[ 'dropFkey', 'externallinks', 'el_from' ],
[ 'renameIndex', 'externallinks', 'externallinks_from_to', 'el_from' ],
[ 'renameIndex', 'externallinks', 'externallinks_index', 'el_index' ],
[ 'dropSequence', 'ip_changes', 'ip_changes_ipc_rev_id_seq' ],
[ 'changeField', 'ip_changes', 'ipc_hex', 'TEXT', "ipc_hex::TEXT DEFAULT ''" ],
[ 'setDefault', 'ip_changes', 'ipc_rev_id', 0 ],
[ 'renameIndex', 'watchlist', 'namespace_title', 'wl_namespace_title' ],
[ 'dropFkey', 'page_props', 'pp_page' ],
// page_props primary key change moved from the Schema SQL file to here in 1.36
[ 'changePrimaryKey', 'page_props', [ 'pp_page', 'pp_propname' ], 'page_props_pk' ],
[ 'setDefault', 'job', 'job_cmd', '' ],
[ 'changeField', 'job', 'job_namespace', 'INTEGER', '' ],
[ 'dropPgIndex', 'job', 'job_cmd_namespace_title' ],
[ 'addPgIndex', 'job', 'job_cmd', '(job_cmd, job_namespace, job_title, job_params)' ],
[ 'renameIndex', 'job', 'job_timestamp_idx', 'job_timestamp' ],
[ 'changeField', 'slot_roles', 'role_id', 'INTEGER', '' ],
[ 'changeField', 'content_models', 'model_id', 'INTEGER', '' ],
[ 'renameIndex', 'page', 'page_len_idx', 'page_len' ],
[ 'renameIndex', 'page', 'page_random_idx', 'page_random' ],
[ 'renameIndex', 'page', 'page_unique_name', 'page_name_title' ],
[ 'addPGIndex', 'page', 'page_redirect_namespace_len', '(page_is_redirect, page_namespace, page_len)' ],
[ 'dropFkey', 'categorylinks', 'cl_from' ],
[ 'setDefault', 'categorylinks', 'cl_from', 0 ],
[ 'setDefault', 'categorylinks', 'cl_to', '' ],
[ 'setDefault', 'categorylinks', 'cl_sortkey', '' ],
[ 'setDefault', 'categorylinks', 'cl_collation', '' ],
[ 'changeNullableField', 'categorylinks', 'cl_sortkey', 'NOT NULL', true ],
[ 'addIndex', 'categorylinks', 'categorylinks_pkey', 'patch-categorylinks-pk.sql' ],
[ 'addPgIndex', 'categorylinks', 'cl_timestamp', '(cl_to, cl_timestamp)' ],
[ 'addPgIndex', 'categorylinks', 'cl_collation_ext', '(cl_collation, cl_to, cl_type, cl_from)' ],
[ 'checkIndex', 'cl_sortkey', [
[ 'cl_to', 'text_ops', 'btree', 1 ],
[ 'cl_type', 'text_ops', 'btree', 1 ],
[ 'cl_sortkey', 'text_ops', 'btree', 1 ],
[ 'cl_from', 'text_ops', 'btree', 1 ],
],
'CREATE INDEX cl_sortkey ON categorylinks (cl_to, cl_type, cl_sortkey, cl_from)'
],
[ 'renameIndex', 'logging', 'logging_type_name', 'type_time' ],
[ 'renameIndex', 'logging', 'logging_actor_time_backwards', 'actor_time' ],
[ 'renameIndex', 'logging', 'logging_page_time', 'page_time' ],
[ 'renameIndex', 'logging', 'logging_times', 'times' ],
[ 'renameIndex', 'logging', 'logging_actor_type_time', 'log_actor_type_time' ],
[ 'renameIndex', 'logging', 'logging_page_id_time', 'log_page_id_time' ],
[ 'renameIndex', 'logging', 'logging_type_action', 'log_type_action' ],
[ 'changeNullableField', 'logging', 'log_params', 'NOT NULL', true ],
[ 'setDefault', 'logging', 'log_action', '' ],
[ 'setDefault', 'logging', 'log_type', '' ],
[ 'setDefault', 'logging', 'log_title', '' ],
[ 'setDefault', 'logging', 'log_timestamp', '1970-01-01 00:00:00+00' ],
[ 'changeField', 'logging', 'log_actor', 'BIGINT', '' ],
[ 'changeField', 'logging', 'log_comment_id', 'BIGINT', '' ],
[ 'changeField', 'logging', 'log_namespace', 'INT', 'log_namespace::INT DEFAULT 0' ],
[ 'dropPgIndex', 'logging', 'logging_actor_time' ],
[ 'changeField', 'uploadstash', 'us_key', 'VARCHAR(255)', '' ],
[ 'changeField', 'uploadstash', 'us_orig_path', 'VARCHAR(255)', '' ],
[ 'changeField', 'uploadstash', 'us_path', 'VARCHAR(255)', '' ],
[ 'changeField', 'uploadstash', 'us_source_type', 'VARCHAR(50)', '' ],
[ 'changeField', 'uploadstash', 'us_props', 'TEXT', '' ],
[ 'changeField', 'uploadstash', 'us_status', 'VARCHAR(50)', '' ],
[ 'changeField', 'uploadstash', 'us_sha1', 'VARCHAR(31)', '' ],
[ 'changeField', 'uploadstash', 'us_mime', 'VARCHAR(255)', '' ],
[ 'changeNullableField', 'uploadstash', 'us_key', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_user', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_orig_path', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_path', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_timestamp', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_status', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_size', 'NOT NULL', true ],
[ 'changeNullableField', 'uploadstash', 'us_sha1', 'NOT NULL', true ],
[ 'renameIndex', 'uploadstash', 'us_user_idx', 'us_user' ],
[ 'renameIndex', 'uploadstash', 'us_key_idx', 'us_key' ],
[ 'renameIndex', 'uploadstash', 'us_timestamp_idx', 'us_timestamp' ],
[ 'renameIndex', 'user_properties', 'user_properties_property', 'up_property' ],
[ 'renameIndex', 'sites', 'sites_global_key', 'site_global_key' ],
[ 'renameIndex', 'sites', 'sites_type', 'site_type' ],
[ 'renameIndex', 'sites', 'sites_group, ', 'site_group' ],
[ 'renameIndex', 'sites', 'sites_source', 'site_source' ],
[ 'renameIndex', 'sites', 'sites_language', 'site_language' ],
[ 'renameIndex', 'sites', 'sites_protocol', 'site_protocol' ],
[ 'renameIndex', 'sites', 'sites_domain', 'site_domain' ],
[ 'renameIndex', 'sites', 'sites_forward', 'site_forward' ],
[ 'renameIndex', 'logging', 'type_name', 'log_type_time' ],
[ 'renameIndex', 'logging', 'actor_time', 'log_actor_time' ],
[ 'renameIndex', 'logging', 'page_time', 'log_page_time' ],
[ 'renameIndex', 'logging', 'times', 'log_times' ],
[ 'setDefault', 'filearchive', 'fa_name', '' ],
[ 'setDefault', 'filearchive', 'fa_archive_name', '' ],
[ 'setDefault', 'filearchive', 'fa_storage_key', '' ],
[ 'dropFkey', 'filearchive', 'fa_deleted_user' ],
[ 'changeField', 'filearchive', 'fa_deleted_reason_id', 'BIGINT', '' ],
[ 'changeField', 'filearchive', 'fa_metadata', 'TEXT', '' ],
[ 'changeField', 'filearchive', 'fa_bits', 'INTEGER', '' ],
[ 'changeField', 'filearchive', 'fa_description_id', 'BIGINT', '' ],
[ 'changeField', 'filearchive', 'fa_actor', 'BIGINT', '' ],
[ 'renameIndex', 'filearchive', 'fa_name_time', 'fa_name' ],
[ 'renameIndex', 'filearchive', 'fa_dupe', 'fa_storage_group' ],
[ 'renameIndex', 'filearchive', 'fa_notime', 'fa_deleted_timestamp' ],
[ 'dropPgIndex', 'filearchive', 'fa_nouser' ],
[ 'addPgIndex', 'filearchive', 'fa_actor_timestamp', '(fa_actor, fa_timestamp)' ],
[ 'addPgIndex', 'ipblocks', 'ipb_expiry', '(ipb_expiry)' ],
[ 'addPgIndex', 'ipblocks', 'ipb_timestamp', '(ipb_timestamp)' ],
[ 'renameIndex', 'text', 'pagecontent_pkey', 'text_pkey' ],
[ 'changeNullableField', 'text', 'old_text', 'NOT NULL', true ],
[ 'changeNullableField', 'text', 'old_flags', 'NOT NULL', true ],
[ 'setDefault', 'oldimage', 'oi_name', '' ],
[ 'setDefault', 'oldimage', 'oi_archive_name', '' ],
[ 'setDefault', 'oldimage', 'oi_size', 0 ],
[ 'setDefault', 'oldimage', 'oi_width', 0 ],
[ 'setDefault', 'oldimage', 'oi_height', 0 ],
[ 'setDefault', 'oldimage', 'oi_bits', 0 ],
[ 'setDefault', 'oldimage', 'oi_name', '' ],
[ 'changeField', 'oldimage', 'oi_bits', 'INTEGER', '' ],
[ 'changeField', 'oldimage', 'oi_description_id', 'BIGINT', '' ],
[ 'changeField', 'oldimage', 'oi_actor', 'BIGINT', '' ],
[ 'changeField', 'oldimage', 'oi_metadata', 'TEXT', '' ],
[ 'dropDefault', 'oldimage', 'oi_metadata' ],
[ 'changeNullableField', 'oldimage', 'oi_minor_mime', 'NOT NULL', true ],
[ 'changeNullableField', 'oldimage', 'oi_minor_mime', 'NOT NULL', true ],
[ 'dropFkey', 'oldimage', 'oi_name' ],
[ 'addPgIndex', 'oldimage', 'oi_actor_timestamp', '(oi_actor, oi_timestamp)' ],
[ 'dropPgIndex', 'recentchanges', 'rc_timestamp_bot' ],
[ 'addPgIndex', 'recentchanges', 'rc_ns_actor', '(rc_namespace, rc_actor)' ],
[ 'addPgIndex', 'recentchanges', 'rc_actor', '(rc_actor, rc_timestamp)' ],
[ 'dropIndex', 'objectcache', 'keyname', 'patch-objectcache_keyname-pk.sql' ],
[ 'changeField', 'objectcache', 'value', 'TEXT', '' ],
[ 'changeNullableField', 'objectcache', 'value', 'NULL', true ],
[ 'dropFkey', 'ipblocks', 'ipb_user' ],
[ 'dropFkey', 'ipblocks', 'ipb_parent_block_id' ],
[ 'setDefault', 'ipblocks', 'ipb_user', 0 ],
[ 'changeNullableField', 'ipblocks', 'ipb_user', 'NOT NULL', true ],
[ 'changeNullableField', 'ipblocks', 'ipb_range_start', 'NOT NULL', true ],
[ 'changeNullableField', 'ipblocks', 'ipb_range_end', 'NOT NULL', true ],
[ 'changeField', 'ipblocks', 'ipb_by_actor', 'BIGINT', '' ],
[ 'changeField', 'ipblocks', 'ipb_reason_id', 'BIGINT', '' ],
[ 'renameIndex', 'archive', 'archive_name_title_timestamp', 'ar_name_title_timestamp' ],
[ 'dropPgIndex', 'archive', 'archive_actor' ],
[ 'addPgIndex', 'archive', 'ar_actor_timestamp', '(ar_actor,ar_timestamp)' ],
[ 'setDefault', 'image', 'img_name', '' ],
[ 'setDefault', 'image', 'img_size', 0 ],
[ 'setDefault', 'image', 'img_width', 0 ],
[ 'setDefault', 'image', 'img_height', 0 ],
[ 'setDefault', 'image', 'img_bits', 0 ],
[ 'changeField', 'image', 'img_bits', 'INTEGER', '' ],
[ 'changeField', 'image', 'img_description_id', 'BIGINT', '' ],
[ 'changeField', 'image', 'img_actor', 'BIGINT', '' ],
[ 'changeField', 'image', 'img_metadata', 'TEXT', '' ],
[ 'dropDefault', 'image', 'img_metadata' ],
[ 'changeNullableField', 'image', 'img_major_mime', 'NOT NULL', true ],
[ 'changeNullableField', 'image', 'img_minor_mime', 'NOT NULL', true ],
[ 'changeNullableField', 'image', 'img_timestamp', 'NOT NULL', true ],
[ 'renameIndex', 'image', 'img_size_idx', 'img_size' ],
[ 'renameIndex', 'image', 'img_timestamp_idx', 'img_timestamp' ],
[ 'addPgIndex', 'image', 'img_actor_timestamp', '(img_actor, img_timestamp)' ],
[ 'addPgIndex', 'image', 'img_media_mime', '(img_media_type, img_major_mime, img_minor_mime)' ],
[ 'renameIndex', 'site_identifiers', 'site_ids_site', 'si_site' ],
[ 'renameIndex', 'site_identifiers', 'site_ids_key', 'si_key' ],
[ 'changeField', 'recentchanges', 'rc_actor', 'BIGINT', '' ],
[ 'changeField', 'recentchanges', 'rc_comment_id', 'BIGINT', '' ],
[ 'changeField', 'recentchanges', 'rc_ip', 'TEXT', '' ],
[ 'changeField', 'recentchanges', 'rc_namespace', 'INTEGER', '' ],
[ 'setDefault', 'recentchanges', 'rc_title', '' ],
[ 'setDefault', 'recentchanges', 'rc_source', '' ],
[ 'setDefault', 'recentchanges', 'rc_ip', '' ],
[ 'setDefault', 'recentchanges', 'rc_namespace', 0 ],
[ 'setDefault', 'recentchanges', 'rc_cur_id', 0 ],
[ 'setDefault', 'recentchanges', 'rc_this_oldid', 0 ],
[ 'setDefault', 'recentchanges', 'rc_last_oldid', 0 ],
[ 'changeNullableField', 'recentchanges', 'rc_cur_id', 'NOT NULL', true ],
[ 'changeNullableField', 'recentchanges', 'rc_ip', 'NOT NULL', true ],
[ 'renameIndex', 'recentchanges', 'new_name_timestamp', 'rc_new_name_timestamp', false,
'patch-recentchanges-rc_new_name_timestamp.sql' ],
[ 'changeField', 'archive', 'ar_namespace', 'INTEGER', '' ],
[ 'setDefault', 'archive', 'ar_namespace', 0 ],
[ 'setDefault', 'archive', 'ar_title', '' ],
[ 'changeField', 'archive', 'ar_comment_id', 'BIGINT', '' ],
[ 'changeField', 'archive', 'ar_actor', 'BIGINT', '' ],
[ 'renameIndex', 'user', 'user_email_token_idx', 'user_email_token' ],
[ 'addPgIndex', 'user', 'user_email', '(user_email)' ],
[ 'addPgIndex', 'user', 'user_name', '(user_name)', true ],
[ 'changeField', 'page', 'page_namespace', 'INTEGER', '' ],
[ 'changeNullableField', 'page', 'page_touched', 'NOT NULL', true ],
[ 'changeField', 'page', 'page_random', 'FLOAT', '' ],
[ 'renameIndex', 'revision', 'revision_unique', 'rev_page_id' ],
[ 'renameIndex', 'revision', 'rev_timestamp_idx', 'rev_timestamp' ],
[ 'addPgIndex', 'revision', 'rev_page_timestamp', '(rev_page,rev_timestamp)' ],
[ 'changeNullableField', 'user', 'user_touched', 'NOT NULL', true ],
// 1.37
[ 'setDefault', 'user', 'user_name', '' ],
[ 'setDefault', 'user', 'user_token', '' ],
[ 'setDefault', 'user', 'user_real_name', '' ],
[ 'setDefault', 'user', 'user_email', '' ],
[ 'setDefault', 'user', 'user_newpassword', '' ],
[ 'setDefault', 'user', 'user_password', '' ],
[ 'changeNullableField', 'user', 'user_token', 'NOT NULL', true ],
[ 'changeNullableField', 'user', 'user_real_name', 'NOT NULL', true ],
[ 'changeNullableField', 'user', 'user_email', 'NOT NULL', true ],
[ 'changeNullableField', 'user', 'user_newpassword', 'NOT NULL', true ],
[ 'changeNullableField', 'user', 'user_password', 'NOT NULL', true ],
[ 'dropDefault', 'user', 'user_email' ],
[ 'dropDefault', 'user', 'user_newpassword' ],
[ 'dropDefault', 'user', 'user_password' ],
[ 'dropConstraint', 'user', 'user_name', 'unique' ],
[ 'addField', 'objectcache', 'modtoken', 'patch-objectcache-modtoken.sql' ],
[ 'dropFkey', 'revision', 'rev_page' ],
[ 'changeNullableField', 'revision', 'rev_page', 'NOT NULL', true ],
[ 'changeField', 'revision', 'rev_comment_id', 'BIGINT', 'rev_comment_id::BIGINT DEFAULT 0' ],
[ 'changeField', 'revision', 'rev_actor', 'BIGINT', 'rev_actor::BIGINT DEFAULT 0' ],
[ 'checkIndex', 'rev_page_id', [
[ 'rev_page', 'int4_ops', 'btree', 1 ],
[ 'rev_id', 'int4_ops', 'btree', 1 ],
],
'CREATE INDEX rev_page_id ON revision (rev_page,rev_id)'
],
[ 'addTable', 'searchindex', 'patch-searchindex-table.sql' ],
[ 'addPgIndex', 'oldimage', 'oi_timestamp', '(oi_timestamp)' ],
[ 'renameIndex', 'page', 'name_title', 'page_name_title' ],
[ 'renameIndex', 'change_tag', 'change_tag_rc_tag_id', 'ct_rc_tag_id' ],
[ 'renameIndex', 'change_tag', 'change_tag_log_tag_id', 'ct_log_tag_id' ],
[ 'renameIndex', 'change_tag', 'change_tag_rev_tag_id', 'ct_rev_tag_id' ],
[ 'renameIndex', 'change_tag', 'change_tag_tag_id_id', 'ct_tag_id_id' ],
// 1.38
[ 'doConvertDjvuMetadata' ],
[ 'dropPgField', 'page_restrictions', 'pr_user' ],
[ 'addTable', 'linktarget', 'patch-linktarget.sql' ],
[ 'dropIndex', 'revision', 'rev_page_id', 'patch-drop-rev_page_id.sql' ],
[ 'addField', 'templatelinks', 'tl_target_id', 'patch-templatelinks-target_id.sql' ],
// 1.39
[ 'addTable', 'user_autocreate_serial', 'patch-user_autocreate_serial.sql' ],
[ 'runMaintenance', MigrateRevisionActorTemp::class, 'maintenance/migrateRevisionActorTemp.php' ],
[ 'dropTable', 'revision_actor_temp' ],
[ 'runMaintenance', UpdateRestrictions::class, 'maintenance/updateRestrictions.php' ],
[ 'dropPgField', 'page', 'page_restrictions' ],
[ 'migrateTemplatelinks' ],
[ 'changeNullableField', 'templatelinks', 'tl_target_id', 'NOT NULL', true ],
[ 'changePrimaryKey', 'templatelinks', [ 'tl_from', 'tl_target_id' ] ],
[ 'dropField', 'templatelinks', 'tl_title', 'patch-templatelinks-drop-tl_title.sql' ],
// 1.40
[ 'addField', 'externallinks', 'el_to_path', 'patch-externallinks-el_to_path.sql' ],
// 1.41
[ 'addField', 'user', 'user_is_temp', 'patch-user-user_is_temp.sql' ],
[ 'runMaintenance', MigrateRevisionCommentTemp::class, 'maintenance/migrateRevisionCommentTemp.php' ],
[ 'dropTable', 'revision_comment_temp' ],
[ 'runMaintenance', MigrateExternallinks::class, 'maintenance/migrateExternallinks.php' ],
[ 'modifyField', 'externallinks', 'el_to', 'patch-externallinks-el_to_default.sql' ],
[ 'addField', 'pagelinks', 'pl_target_id', 'patch-pagelinks-target_id.sql' ],
[ 'dropField', 'externallinks', 'el_to', 'patch-externallinks-drop-el_to.sql' ],
[ 'runMaintenance', FixInconsistentRedirects::class, 'maintenance/fixInconsistentRedirects.php' ],
[ 'modifyField', 'image', 'img_size', 'patch-image-img_size_to_bigint.sql' ],
[ 'modifyField', 'filearchive', 'fa_size', 'patch-filearchive-fa_size_to_bigint.sql' ],
[ 'modifyField', 'oldimage', 'oi_size', 'patch-oldimage-oi_size_to_bigint.sql' ],
[ 'modifyField', 'uploadstash', 'us_size', 'patch-uploadstash-us_size_to_bigint.sql' ],
// 1.42
[ 'addField', 'user_autocreate_serial', 'uas_year', 'patch-user_autocreate_serial-uas_year.sql' ],
[ 'addTable', 'block_target', 'patch-block_target.sql' ],
[ 'dropIndex', 'categorylinks', 'cl_collation_ext', 'patch-drop-cl_collation_ext.sql' ],
[ 'runMaintenance', PopulateUserIsTemp::class, 'maintenance/populateUserIsTemp.php' ],
[ 'dropIndex', 'sites', 'site_type', 'patch-sites-drop_indexes.sql' ],
[ 'dropIndex', 'iwlinks', 'iwl_prefix_from_title', 'patch-iwlinks-drop-iwl_prefix_from_title.sql' ],
// 1.43
[ 'migratePagelinks' ],
[ 'dropDefault', 'revision', 'rev_actor' ],
[ 'dropDefault', 'revision', 'rev_comment_id' ],
[ 'changeField', 'revision', 'rev_id', 'BIGINT', '' ],
[ 'changeField', 'revision', 'rev_parent_id', 'BIGINT', '' ],
[ 'changeField', 'recentchanges', 'rc_id', 'BIGINT', '' ],
[ 'changeField', 'change_tag', 'ct_rc_id', 'BIGINT', '' ],
[ 'runMaintenance', \MigrateBlocks::class, 'maintenance/migrateBlocks.php' ],
[ 'dropTable', 'ipblocks' ],
];
}
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( $this->db->getCoreSchema() )
),
__METHOD__
);
if ( !$res ) {
return null;
}
$cols = [];
foreach ( $res as $r ) {
$cols[] = [
"name" => $r[0],
"ord" => $r[1],
];
}
return $cols;
}
protected 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( $idx )
),
__METHOD__
);
if ( !$res ) {
return null;
}
$r = $res->fetchRow();
if ( !$r ) {
return null;
}
$indkey = $r[0];
$relid = intval( $r[1] );
$indkeys = explode( ' ', $indkey );
$colnames = [];
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, $rid ), __METHOD__ );
if ( !$r2 ) {
return null;
}
$row2 = $r2->fetchRow();
if ( !$row2 ) {
return null;
}
$colnames[] = $row2[0];
}
return $colnames;
}
protected 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 )
),
__METHOD__
);
$row = $r->fetchRow();
return $row ? $row[0] : null;
}
protected 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 )
),
__METHOD__
);
$row = $r->fetchRow();
if ( !$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" );
if ( $pkey !== false ) {
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "CREATE SEQUENCE $ns OWNED BY $table.$pkey", __METHOD__ );
$this->setDefault( $table, $pkey, '"nextval"(\'"' . $ns . '"\'::"regclass")' );
} else {
$this->db->query( "CREATE SEQUENCE $ns", __METHOD__ );
}
}
}
protected function dropSequence( $table, $ns ) {
if ( $this->db->sequenceExists( $ns ) ) {
$this->output( "Dropping sequence $ns\n" );
$this->db->query( "DROP SEQUENCE $ns CASCADE", __METHOD__ );
}
}
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", __METHOD__ );
}
}
protected function setSequenceOwner( $table, $pkey, $seq ) {
if ( $this->db->sequenceExists( $seq ) ) {
$this->output( "Setting sequence $seq owner to $table.$pkey\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER SEQUENCE $seq OWNED BY $table.$pkey", __METHOD__ );
}
}
protected function renameTable( $old, $new, $patch = false ) {
if ( $this->db->tableExists( $old, __METHOD__ ) ) {
$this->output( "Renaming table $old to $new\n" );
$old = $this->db->addIdentifierQuotes( $old );
$new = $this->db->addIdentifierQuotes( $new );
$this->db->query( "ALTER TABLE $old RENAME TO $new", __METHOD__ );
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 true;
}
// 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" .
" $old should be manually removed if not needed anymore.\n" );
}
return true;
}
// Third requirement: the old index must exist
if ( !$this->db->indexExists( $table, $old, __METHOD__ ) ) {
$this->output( "...skipping: index $old doesn't exist.\n" );
return true;
}
$this->db->query( "ALTER INDEX $old RENAME TO $new", __METHOD__ );
return true;
}
protected function dropPgField( $table, $field ) {
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi === null ) {
$this->output( "...$table table does not contain $field field.\n" );
} else {
$this->output( "Dropping column '$table.$field'\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER TABLE $table DROP COLUMN $field", __METHOD__ );
}
}
protected function addPgField( $table, $field, $type ) {
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi !== null ) {
$this->output( "...column '$table.$field' already exists\n" );
} else {
$this->output( "Adding column '$table.$field'\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER TABLE $table ADD $field $type", __METHOD__ );
}
}
protected function changeField( $table, $field, $newtype, $default ) {
if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
$this->output( "...$table table does not exist, skipping default change.\n" );
return;
}
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi === null ) {
$this->output( "...ERROR: expected column $table.$field to exist\n" );
exit( 1 );
}
if ( $fi->type() === strtolower( $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" );
$table = $this->db->addIdentifierQuotes( $table );
$sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
if ( strlen( $default ) ) {
$res = [];
if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
$sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
$this->db->query( $sqldef, __METHOD__ );
$default = preg_replace( '/\s*DEFAULT .+/', '', $default );
}
$sql .= " USING $default";
}
$this->db->query( $sql, __METHOD__ );
}
}
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 ( $fi === null ) {
$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" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "DELETE from $table", __METHOD__ );
$this->output( "Changing column type of '$table.$field' from '{$fi->type()}' to '$newtype'\n" );
$sql = "ALTER TABLE $table ALTER $field TYPE $newtype";
if ( strlen( $default ) ) {
$res = [];
if ( preg_match( '/DEFAULT (.+)/', $default, $res ) ) {
$sqldef = "ALTER TABLE $table ALTER $field SET DEFAULT $res[1]";
$this->db->query( $sqldef, __METHOD__ );
$default = preg_replace( '/\s*DEFAULT .+/', '', $default );
}
$sql .= " USING $default";
}
$this->db->query( $sql, __METHOD__ );
}
}
protected function setDefault( $table, $field, $default ) {
if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
$this->output( "...$table table does not exist, skipping default change.\n" );
return;
}
$info = $this->db->fieldInfo( $table, $field );
if ( $info && $info->defaultValue() !== $default ) {
$this->output( "Changing '$table.$field' default value\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER TABLE $table ALTER $field SET DEFAULT "
. $this->db->addQuotes( $default ), __METHOD__ );
}
}
/**
* Drop a default value from a field
* @since 1.32
* @param string $table
* @param string $field
*/
protected function dropDefault( $table, $field ) {
$info = $this->db->fieldInfo( $table, $field );
if ( $info->defaultValue() !== false ) {
$this->output( "Removing '$table.$field' default value\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER TABLE $table ALTER $field DROP DEFAULT", __METHOD__ );
}
}
protected function changeNullableField( $table, $field, $null, $update = false ) {
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi === null ) {
return;
}
if ( $fi->isNullable() ) {
# # It's NULL - does it need to be NOT NULL?
if ( $null === 'NOT NULL' ) {
$this->output( "Changing '$table.$field' to not allow NULLs\n" );
$table = $this->db->addIdentifierQuotes( $table );
if ( $update ) {
$this->db->query( "UPDATE $table SET $field = DEFAULT WHERE $field IS NULL", __METHOD__ );
}
$this->db->query( "ALTER TABLE $table ALTER $field SET NOT NULL", __METHOD__ );
} 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" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "ALTER TABLE $table ALTER $field DROP NOT NULL", __METHOD__ );
} else {
$this->output( "...column '$table.$field' is already set as NOT NULL\n" );
}
}
}
protected function addPgIndex( $table, $index, $type, $unique = false ) {
if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
$this->output( "...$table table does not exist, skipping index.\n" );
} elseif ( $this->db->indexExists( $table, $index, __METHOD__ ) ) {
$this->output( "...index '$index' on table '$table' already exists\n" );
} else {
$this->output( "Creating index '$index' on table '$table' $type\n" );
$table = $this->db->addIdentifierQuotes( $table );
$unique = $unique ? 'UNIQUE' : '';
$this->db->query( "CREATE $unique INDEX $index ON $table $type", __METHOD__ );
}
}
protected function addPgExtIndex( $table, $index, $type ) {
if ( $this->db->indexExists( $table, $index, __METHOD__ ) ) {
$this->output( "...index '$index' on table '$table' already exists\n" );
} elseif ( preg_match( '/^\(/', $type ) ) {
$this->output( "Creating index '$index' on table '$table'\n" );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query( "CREATE INDEX $index ON $table $type", __METHOD__ );
} else {
$this->applyPatch( $type, true, "Creating index '$index' on table '$table'" );
}
}
protected function dropFkey( $table, $field ) {
if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
$this->output( "...$table table does not exist, skipping constraint change.\n" );
return;
}
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi === null ) {
$this->output( "WARNING! Column '$table.$field' does not exist but it should! " .
"Please report this.\n" );
return;
}
if ( $this->dropConstraint( $table, $field, 'foreignkey', $fi->conname() ) ) {
$this->output( "Dropping foreign key constraint on '$table.$field'\n" );
} else {
$this->output( "...foreign key constraint on '$table.$field' already does not exist\n" );
}
}
protected function changeFkeyDeferrable( $table, $field, $clause ) {
$fi = $this->db->fieldInfo( $table, $field );
if ( $fi === null ) {
$this->output( "WARNING! Column '$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();
$conclause = "CONSTRAINT \"$conname\"";
if ( !$this->dropConstraint( $table, $field, 'foreignkey', $conname ) ) {
$this->output( "Column '$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, __METHOD__ );
}
protected function dropPgIndex( $table, $index ) {
if ( $this->db->indexExists( $table, $index, __METHOD__ ) ) {
$this->output( "Dropping obsolete index '$index'\n" );
$this->db->query( "DROP INDEX \"" . $index . "\"", __METHOD__ );
}
}
protected function checkIndex( $index, $should_be, $good_def ) {
$pu = $this->db->indexAttributes( $index );
if ( $pu && $pu != $should_be ) {
$this->output( "Dropping obsolete version of index '$index'\n" );
$this->db->query( "DROP INDEX \"" . $index . "\"", __METHOD__ );
$pu = [];
} else {
$this->output( "...no need to drop index '$index'\n" );
}
if ( !$pu ) {
$this->output( "Creating index '$index'\n" );
$this->db->query( $good_def, __METHOD__ );
} else {
$this->output( "...index '$index' exists\n" );
}
}
protected function changePrimaryKey( $table, $shouldBe, $constraintName = null ) {
// https://wiki.postgresql.org/wiki/Retrieve_primary_key_columns
$result = $this->db->query(
"SELECT a.attname as column " .
"FROM pg_index i " .
"JOIN pg_attribute a ON a.attrelid = i.indrelid " .
"AND a.attnum = ANY(i.indkey) " .
"WHERE i.indrelid = '\"$table\"'::regclass " .
"AND i.indisprimary",
__METHOD__
);
$currentColumns = [];
foreach ( $result as $row ) {
$currentColumns[] = $row->column;
}
if ( $currentColumns == $shouldBe ) {
$this->output( "...no need to change primary key of '$table'\n" );
return true;
}
$this->dropConstraint( $table, '', 'primary', $constraintName );
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query(
"ALTER TABLE $table" .
" ADD PRIMARY KEY (" . implode( ',', $shouldBe ) . ');',
__METHOD__
);
}
/**
* Drop generic constraint. If the constraint was created with a custom name,
* then the name must be queried and supplied as $conname, otherwise standard
* system suffixes and format would be assumed.
*
* @param string $table
* @param string $field
* @param string $type
* @param string|null $conname
* @return bool
*/
protected function dropConstraint( $table, $field, $type, $conname = null ) {
if ( $conname === null ) {
if ( $type == 'primary' ) {
$conname = "{$table}_pkey";
} else {
$map = [ 'unique' => 'key', 'check' => 'check', 'foreignkey' => 'fkey' ];
$conname = "{$table}_{$field}_{$map[$type]}";
}
}
if ( $this->db->constraintExists( $table, $conname ) ) {
$table = $this->db->addIdentifierQuotes( $table );
$this->db->query(
"ALTER TABLE $table DROP CONSTRAINT $conname;",
__METHOD__
);
return true;
}
return false;
}
}