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Diffstat (limited to 'www/wiki/includes/revisiondelete/RevDelRevisionList.php')
| -rw-r--r-- | www/wiki/includes/revisiondelete/RevDelRevisionList.php | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/www/wiki/includes/revisiondelete/RevDelRevisionList.php b/www/wiki/includes/revisiondelete/RevDelRevisionList.php new file mode 100644 index 00000000..07362c42 --- /dev/null +++ b/www/wiki/includes/revisiondelete/RevDelRevisionList.php @@ -0,0 +1,184 @@ +<?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 Wikimedia\Rdbms\FakeResultWrapper; +use Wikimedia\Rdbms\IDatabase; + +/** + * 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 int */ + public $currentRevId; + + public function getType() { + return 'revision'; + } + + public static function getRelationType() { + return 'rev_id'; + } + + public static function getRestriction() { + return 'deleterevision'; + } + + public static function getRevdelConstant() { + return Revision::DELETED_TEXT; + } + + public static function suggestTarget( $target, array $ids ) { + $rev = Revision::newFromId( $ids[0] ); + return $rev ? $rev->getTitle() : $target; + } + + /** + * @param IDatabase $db + * @return mixed + */ + public function doQuery( $db ) { + $ids = array_map( 'intval', $this->ids ); + $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] ); + $queryInfo = [ + 'tables' => $revQuery['tables'], + 'fields' => $revQuery['fields'], + 'conds' => [ + 'rev_page' => $this->title->getArticleID(), + '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 = Revision::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 ( is_null( $this->currentRevId ) ) { + $dbw = wfGetDB( DB_MASTER ); + $this->currentRevId = $dbw->selectField( + 'page', 'page_latest', $this->title->pageCond(), __METHOD__ ); + } + return $this->currentRevId; + } + + public function getSuppressBit() { + return Revision::DELETED_RESTRICTED; + } + + public function doPreCommitUpdates() { + $this->title->invalidateCache(); + return Status::newGood(); + } + + public function doPostCommitUpdates( array $visibilityChangeMap ) { + $this->title->purgeSquid(); + // Extensions that require referencing previous revisions may need this + Hooks::run( 'ArticleRevisionVisibilitySet', [ $this->title, $this->ids, $visibilityChangeMap ] ); + return Status::newGood(); + } +} |