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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 MediaWiki\Revision;
use Wikimedia\Rdbms\IReadableDatabase;
use Wikimedia\Rdbms\SelectQueryBuilder;
/**
* Help and centralize querying revision table.
*
* @since 1.41
*/
class RevisionSelectQueryBuilder extends SelectQueryBuilder {
/**
* @internal use RevisionStore::newSelectQueryBuilder() instead.
* @param IReadableDatabase $db
*/
public function __construct( IReadableDatabase $db ) {
parent::__construct( $db );
$this->select( [
'rev_id',
'rev_page',
'rev_timestamp',
'rev_minor_edit',
'rev_deleted',
'rev_len',
'rev_parent_id',
'rev_sha1',
'rev_user' => 'actor_rev_user.actor_user',
'rev_user_text' => 'actor_rev_user.actor_name',
'rev_actor' => 'rev_actor'
] )
->from( 'revision' )
->join( 'actor', 'actor_rev_user', 'actor_rev_user.actor_id = rev_actor' );
}
/**
* Join the query with user table and add user_name field.
*
* @return $this
*/
public function joinUser() {
$this->field( 'user_name' )
->leftJoin(
'user',
null,
[ $this->db->expr( 'actor_rev_user.actor_user', '!=', 0 ), "user_id = actor_rev_user.actor_user" ]
);
return $this;
}
/**
* Join the query with page table and several fields to allow easier query.
*
* @return $this
*/
public function joinPage() {
$this->fields( [
'page_namespace',
'page_title',
'page_id',
'page_latest',
'page_is_redirect',
'page_len',
] )
->join( 'page', null, 'page_id = rev_page' );
return $this;
}
/**
* Join the query with comment table and several fields to allow easier query.
*
* @return $this
*/
public function joinComment() {
$this->fields( [
'rev_comment_text' => 'comment_rev_comment.comment_text',
'rev_comment_data' => 'comment_rev_comment.comment_data',
'rev_comment_cid' => 'comment_rev_comment.comment_id',
] );
$this->join( 'comment', "comment_rev_comment", 'comment_rev_comment.comment_id = rev_comment_id' );
return $this;
}
}
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