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<?php
/**
* 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
*/
namespace Wikimedia\Rdbms;
use Stringable;
/**
* Class used for token representing identifiers for atomic transactions from IDatabase instances
*
* @ingroup Database
* @internal
*/
class TransactionIdentifier implements Stringable {
/** @var string Application-side ID of the active transaction or an empty string otherwise */
private $id = '';
public function __construct() {
static $nextId;
$nextId = ( $nextId !== null ? $nextId++ : mt_rand() ) % 0xffff;
$this->id = sprintf( '%06x', mt_rand( 0, 0xffffff ) ) . sprintf( '%04x', $nextId );
}
public function __toString() {
return $this->id;
}
}
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