gnu-social/classes/Schema_version.php
Alexei Sorokin 9a515b9234 [SCHEMA] Improve timestamp storage
Avoid the use of deprecated MariaDB "zero dates" globally. If they're present
as attribute defaults somewhere, they will be replaced with NULL implicitly.
The existing "zero dates" in MariaDB storage will be left intact and this
should not present any issues.

The "timestamp" type in table definitions now corresponds to DATETIME in
MariaDB with "DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP", which
should be close enough to the original behaviour for compatibility purposes.
It is now the recommended type for "modified" attributes, because of the
update trigger on MariaDB. But there is no such trigger implemented on
PostgreSQL as of this moment.
2020-06-29 01:41:46 +03:00

49 lines
2.2 KiB
PHP

<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* Table Definition for schema_version
*/
defined('GNUSOCIAL') || die();
class Schema_version extends Managed_DataObject
{
###START_AUTOCODE
/* the code below is auto generated do not remove the above tag */
public $__table = 'schema_version'; // table name
public $table_name; // varchar(64) primary_key not_null
public $checksum; // varchar(64) not_null
public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
/* the code above is auto generated do not remove the tag below */
###END_AUTOCODE
public static function schemaDef()
{
return array(
'description' => 'To avoid checking database structure all the time, we store a checksum of the expected schema info for each table here. If it has not changed since the last time we checked the table, we can leave it as is.',
'fields' => array(
'table_name' => array('type' => 'varchar', 'length' => '64', 'not null' => true, 'description' => 'Table name'),
'checksum' => array('type' => 'varchar', 'length' => '64', 'not null' => true, 'description' => 'Checksum of schema array; a mismatch indicates we should check the table more thoroughly.'),
'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
),
'primary key' => array('table_name'),
);
}
}