MssqlUpdater.php

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<?php
class MssqlUpdater extends DatabaseUpdater {

    protected $db;

    protected function getCoreUpdateList() {
        return [
            // 1.23
            [ 'addField', 'mwuser', 'user_password_expires', 'patch-user_password_expires.sql' ],

            // 1.24
            [ 'addField', 'page', 'page_lang', 'patch-page_page_lang.sql' ],

            // 1.25
            [ 'dropTable', 'hitcounter' ],
            [ 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ],
            [ 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ],
            // scripts were updated in 1.27 due to SQL errors; retaining old updatekeys so that people
            // updating from 1.23->1.25->1.27 do not execute these scripts twice even though the
            // updatekeys no longer make sense as they are.
            [ 'updateSchema', 'categorylinks', 'cl_type-category_types-ck',
                'patch-categorylinks-constraints.sql' ],
            [ 'updateSchema', 'filearchive', 'fa_major_mime-major_mime-ck',
                'patch-filearchive-constraints.sql' ],
            [ 'updateSchema', 'oldimage', 'oi_major_mime-major_mime-ck',
                'patch-oldimage-constraints.sql' ],
            [ 'updateSchema', 'image', 'img_major_mime-major_mime-ck', 'patch-image-constraints.sql' ],
            [ 'updateSchema', 'uploadstash', 'us_media_type-media_type-ck',
                'patch-uploadstash-constraints.sql' ],

            [ 'modifyField', 'image', 'img_major_mime',
                'patch-img_major_mime-chemical.sql' ],
            [ 'modifyField', 'oldimage', 'oi_major_mime',
                'patch-oi_major_mime-chemical.sql' ],
            [ 'modifyField', 'filearchive', 'fa_major_mime',
                'patch-fa_major_mime-chemical.sql' ],

            // 1.27
            [ 'dropTable', 'msg_resource_links' ],
            [ 'dropTable', 'msg_resource' ],
            [ 'addField', 'watchlist', 'wl_id', 'patch-watchlist-wl_id.sql' ],
            [ 'dropField', 'mwuser', 'user_options', 'patch-drop-user_options.sql' ],
            [ 'addTable', 'bot_passwords', 'patch-bot_passwords.sql' ],
            [ 'addField', 'pagelinks', 'pl_from_namespace', 'patch-pl_from_namespace.sql' ],
            [ 'addField', 'templatelinks', 'tl_from_namespace', 'patch-tl_from_namespace.sql' ],
            [ 'addField', 'imagelinks', 'il_from_namespace', 'patch-il_from_namespace.sql' ],
            [ 'dropIndex', 'categorylinks', 'cl_collation', 'patch-kill-cl_collation_index.sql' ],
            [ 'addIndex', 'categorylinks', 'cl_collation_ext',
                'patch-add-cl_collation_ext_index.sql' ],
            [ 'dropField', 'recentchanges', 'rc_cur_time', 'patch-drop-rc_cur_time.sql' ],
            [ 'addField', 'page_props', 'pp_sortkey', 'patch-pp_sortkey.sql' ],
            [ 'updateSchema', 'oldimage', 'oldimage varchar', 'patch-oldimage-schema.sql' ],
            [ 'updateSchema', 'filearchive', 'filearchive varchar', 'patch-filearchive-schema.sql' ],
            [ 'updateSchema', 'image', 'image varchar', 'patch-image-schema.sql' ],
            [ 'updateSchema', 'recentchanges', 'recentchanges-drop-fks',
                'patch-recentchanges-drop-fks.sql' ],
            [ 'updateSchema', 'logging', 'logging-drop-fks', 'patch-logging-drop-fks.sql' ],
            [ 'updateSchema', 'archive', 'archive-drop-fks', 'patch-archive-drop-fks.sql' ],

            // 1.28
            [ 'addIndex', 'recentchanges', 'rc_name_type_patrolled_timestamp',
                'patch-add-rc_name_type_patrolled_timestamp_index.sql' ],
            [ 'addField', 'change_tag', 'ct_id', 'patch-change_tag-ct_id.sql' ],
            [ 'addField', 'tag_summary', 'ts_id', 'patch-tag_summary-ts_id.sql' ],
        ];
    }

    protected function applyPatch( $path, $isFullPath = false, $msg = null ) {
        $prevScroll = $this->db->scrollableCursor( false );
        $prevPrep = $this->db->prepareStatements( false );
        parent::applyPatch( $path, $isFullPath, $msg );
        $this->db->scrollableCursor( $prevScroll );
        $this->db->prepareStatements( $prevPrep );
    }

    protected function updateSchema( $table, $updatekey, $patch, $fullpath = false ) {
        if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
            $this->output( "...$table table does not exist, skipping schema update patch.\n" );
        } elseif ( $this->updateRowExists( $updatekey ) ) {
            $this->output( "...$table already had schema updated by $patch.\n" );
        } else {
            $this->insertUpdateRow( $updatekey );

            return $this->applyPatch( $patch, $fullpath, "Updating schema of table $table" );
        }

        return true;
    }
}