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80 lines
2.9 KiB
PHP
80 lines
2.9 KiB
PHP
<?php //$Id$
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//
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// This file keeps track of upgrades to Moodle's
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// backup/restore utility.
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//
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// Sometimes, changes between versions involve
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// alterations to database structures and other
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// major things that may break installations.
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//
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// The upgrade function in this file will attempt
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// to perform all the necessary actions to upgrade
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// your older installtion to the current version.
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//
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// If there's something it cannot do itself, it
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// will tell you what you need to do.
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//
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// Versions are defined by backup_version.php
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//
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function backup_upgrade($oldversion=0) {
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global $CFG;
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$result = true;
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if ($oldversion < 2006011600 and $result) {
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$result = execute_sql("DROP TABLE {$CFG->prefix}backup_files");
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if ($result) {
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$result = execute_sql("CREATE TABLE {$CFG->prefix}backup_files (
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id SERIAL PRIMARY KEY,
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backup_code integer NOT NULL default '0',
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file_type varchar(10) NOT NULL default '',
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path varchar(255) NOT NULL default '',
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old_id integer default NULL,
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new_id integer default NULL,
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CONSTRAINT {$CFG->prefix}backup_files_uk UNIQUE (backup_code, file_type, path))");
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}
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if ($result) {
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$result = execute_sql("DROP TABLE {$CFG->prefix}backup_ids");
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}
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if ($result) {
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$result = execute_sql("CREATE TABLE {$CFG->prefix}backup_ids (
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id SERIAL PRIMARY KEY,
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backup_code integer NOT NULL default '0',
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table_name varchar(30) NOT NULL default '',
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old_id integer NOT NULL default '0',
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new_id integer default NULL,
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info text,
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CONSTRAINT {$CFG->prefix}backup_ids_uk UNIQUE (backup_code, table_name, old_id))");
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}
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}
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if ($oldversion < 2006042801) {
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modify_database('', 'ALTER TABLE prefix_backup_log
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ALTER COLUMN "time" TYPE integer,
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ALTER COLUMN "time" SET DEFAULT 0,
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ALTER COLUMN laststarttime TYPE integer,
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ALTER COLUMN laststarttime SET DEFAULT 0,
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ALTER COLUMN courseid TYPE integer,
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ALTER COLUMN courseid SET DEFAULT 0');
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modify_database('', 'ALTER TABLE mdl_backup_courses
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ALTER COLUMN lastendtime TYPE integer,
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ALTER COLUMN lastendtime SET DEFAULT 0,
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ALTER COLUMN laststarttime TYPE integer,
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ALTER COLUMN laststarttime SET DEFAULT 0,
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ALTER COLUMN courseid TYPE integer,
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ALTER COLUMN courseid SET DEFAULT 0,
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ALTER COLUMN nextstarttime TYPE integer,
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ALTER COLUMN nextstarttime SET DEFAULT 0');
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}
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//Finally, return result
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return $result;
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}
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?>
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