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<?php /** * Efficient concatenated text storage. * * 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 */ use MediaWiki\MediaWikiServices; /** * To speed up conversion from 1.4 to 1.5 schema, text rows can refer to the * leftover cur table as the backend. This avoids expensively copying hundreds * of megabytes of data during the conversion downtime. */ class HistoryBlobCurStub { /** @var int */ public $mCurId; /** * @param int $curid The cur_id pointed to */ public function __construct( $curid = 0 ) { $this->mCurId = $curid; } /** * Sets the location (cur_id) of the main object to which this object * points * * @param int $id */ public function setLocation( $id ) { $this->mCurId = $id; } /** * @return string|false */ public function getText() { $dbr = MediaWikiServices::getInstance()->getConnectionProvider()->getReplicaDatabase(); $row = $dbr->newSelectQueryBuilder() ->select( [ 'cur_text' ] ) ->from( 'cur' ) ->where( [ 'cur_id' => $this->mCurId ] ) ->caller( __METHOD__ )->fetchRow(); return $row ? $row->cur_text : false; } } // Blobs generated by MediaWiki < 1.5 on PHP 4 were serialized with the // class name coerced to lowercase. We can improve efficiency by adding // autoload entries for the lowercase variants of these classes (T166759). // The code below is never executed, but it is picked up by the AutoloadGenerator // parser, which scans for class_alias() calls. /* class_alias( HistoryBlobCurStub::class, 'historyblobcurstub' ); */
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