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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
* @ingroup RevisionDelete
*/
use MediaWiki\HookContainer\HookContainer;
use MediaWiki\HookContainer\HookRunner;
use MediaWiki\MediaWikiServices;
use MediaWiki\Page\PageIdentity;
use MediaWiki\Revision\RevisionRecord;
use MediaWiki\Revision\RevisionStore;
use Wikimedia\Rdbms\FakeResultWrapper;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\LBFactory;
/**
* List for revision table items
*
* This will check both the 'revision' table for live revisions and the
* 'archive' table for traditionally-deleted revisions that have an
* ar_rev_id saved.
*
* See RevDelRevisionItem and RevDelArchivedRevisionItem for items.
*/
class RevDelRevisionList extends RevDelList {
/** @var LBFactory */
private $lbFactory;
/** @var HookRunner */
private $hookRunner;
/** @var HtmlCacheUpdater */
private $htmlCacheUpdater;
/** @var RevisionStore */
private $revisionStore;
/** @var WANObjectCache */
private $wanObjectCache;
/** @var int */
public $currentRevId;
/**
* @param IContextSource $context
* @param PageIdentity $page
* @param array $ids
* @param LBFactory $lbFactory
* @param HookContainer $hookContainer
* @param HtmlCacheUpdater $htmlCacheUpdater
* @param RevisionStore $revisionStore
* @param WANObjectCache $wanObjectCache
*/
public function __construct(
IContextSource $context,
PageIdentity $page,
array $ids,
LBFactory $lbFactory,
HookContainer $hookContainer,
HtmlCacheUpdater $htmlCacheUpdater,
RevisionStore $revisionStore,
WANObjectCache $wanObjectCache
) {
parent::__construct( $context, $page, $ids, $lbFactory );
$this->lbFactory = $lbFactory;
$this->hookRunner = new HookRunner( $hookContainer );
$this->htmlCacheUpdater = $htmlCacheUpdater;
$this->revisionStore = $revisionStore;
$this->wanObjectCache = $wanObjectCache;
}
public function getType() {
return 'revision';
}
public static function getRelationType() {
return 'rev_id';
}
public static function getRestriction() {
return 'deleterevision';
}
public static function getRevdelConstant() {
return RevisionRecord::DELETED_TEXT;
}
public static function suggestTarget( $target, array $ids ) {
$revisionRecord = MediaWikiServices::getInstance()
->getRevisionLookup()
->getRevisionById( $ids[0] );
if ( $revisionRecord ) {
return Title::newFromLinkTarget( $revisionRecord->getPageAsLinkTarget() );
}
return $target;
}
/**
* @param IDatabase $db
* @return mixed
*/
public function doQuery( $db ) {
$ids = array_map( 'intval', $this->ids );
$revQuery = $this->revisionStore->getQueryInfo( [ 'page', 'user' ] );
$queryInfo = [
'tables' => $revQuery['tables'],
'fields' => $revQuery['fields'],
'conds' => [
'rev_page' => $this->page->getId(),
'rev_id' => $ids,
],
'options' => [
'ORDER BY' => 'rev_id DESC',
'USE INDEX' => [ 'revision' => 'PRIMARY' ] // workaround for MySQL bug (T104313)
],
'join_conds' => $revQuery['joins'],
];
ChangeTags::modifyDisplayQuery(
$queryInfo['tables'],
$queryInfo['fields'],
$queryInfo['conds'],
$queryInfo['join_conds'],
$queryInfo['options'],
''
);
$live = $db->select(
$queryInfo['tables'],
$queryInfo['fields'],
$queryInfo['conds'],
__METHOD__,
$queryInfo['options'],
$queryInfo['join_conds']
);
if ( $live->numRows() >= count( $ids ) ) {
// All requested revisions are live, keeps things simple!
return $live;
}
$arQuery = $this->revisionStore->getArchiveQueryInfo();
$archiveQueryInfo = [
'tables' => $arQuery['tables'],
'fields' => $arQuery['fields'],
'conds' => [
'ar_rev_id' => $ids,
],
'options' => [ 'ORDER BY' => 'ar_rev_id DESC' ],
'join_conds' => $arQuery['joins'],
];
ChangeTags::modifyDisplayQuery(
$archiveQueryInfo['tables'],
$archiveQueryInfo['fields'],
$archiveQueryInfo['conds'],
$archiveQueryInfo['join_conds'],
$archiveQueryInfo['options'],
''
);
// Check if any requested revisions are available fully deleted.
$archived = $db->select(
$archiveQueryInfo['tables'],
$archiveQueryInfo['fields'],
$archiveQueryInfo['conds'],
__METHOD__,
$archiveQueryInfo['options'],
$archiveQueryInfo['join_conds']
);
if ( $archived->numRows() == 0 ) {
return $live;
} elseif ( $live->numRows() == 0 ) {
return $archived;
} else {
// Combine the two! Whee
$rows = [];
foreach ( $live as $row ) {
$rows[$row->rev_id] = $row;
}
foreach ( $archived as $row ) {
$rows[$row->ar_rev_id] = $row;
}
krsort( $rows );
return new FakeResultWrapper( array_values( $rows ) );
}
}
public function newItem( $row ) {
if ( isset( $row->rev_id ) ) {
return new RevDelRevisionItem( $this, $row );
} elseif ( isset( $row->ar_rev_id ) ) {
return new RevDelArchivedRevisionItem( $this, $row );
} else {
// This shouldn't happen. :)
throw new MWException( 'Invalid row type in RevDelRevisionList' );
}
}
public function getCurrent() {
if ( $this->currentRevId === null ) {
$dbw = $this->lbFactory->getMainLB()->getConnectionRef( DB_PRIMARY );
$this->currentRevId = $dbw->selectField(
'page',
'page_latest',
[ 'page_namespace' => $this->page->getNamespace(), 'page_title' => $this->page->getDBkey() ],
__METHOD__
);
}
return $this->currentRevId;
}
public function getSuppressBit() {
return RevisionRecord::DELETED_RESTRICTED;
}
public function doPreCommitUpdates() {
Title::castFromPageIdentity( $this->page )->invalidateCache();
return Status::newGood();
}
public function doPostCommitUpdates( array $visibilityChangeMap ) {
$this->htmlCacheUpdater->purgeTitleUrls(
$this->page,
HtmlCacheUpdater::PURGE_INTENT_TXROUND_REFLECTED
);
// Extensions that require referencing previous revisions may need this
$this->hookRunner->onArticleRevisionVisibilitySet(
// @phan-suppress-next-line PhanTypeMismatchArgumentNullable castFrom does not return null here
Title::castFromPageIdentity( $this->page ),
$this->ids,
$visibilityChangeMap
);
$this->wanObjectCache->touchCheckKey(
"RevDelRevisionList:page:{$this->page->getID()}}"
);
return Status::newGood();
}
}
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