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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | * @ingroup RevisionDelete |
| 20 | */ |
| 21 | |
| 22 | use MediaWiki\Cache\HTMLCacheUpdater; |
| 23 | use MediaWiki\Context\IContextSource; |
| 24 | use MediaWiki\HookContainer\HookContainer; |
| 25 | use MediaWiki\HookContainer\HookRunner; |
| 26 | use MediaWiki\MediaWikiServices; |
| 27 | use MediaWiki\Page\PageIdentity; |
| 28 | use MediaWiki\Revision\RevisionRecord; |
| 29 | use MediaWiki\Revision\RevisionStore; |
| 30 | use MediaWiki\Status\Status; |
| 31 | use MediaWiki\Title\Title; |
| 32 | use Wikimedia\Rdbms\FakeResultWrapper; |
| 33 | use Wikimedia\Rdbms\IResultWrapper; |
| 34 | use Wikimedia\Rdbms\LBFactory; |
| 35 | |
| 36 | /** |
| 37 | * List for revision table items |
| 38 | * |
| 39 | * This will check both the 'revision' table for live revisions and the |
| 40 | * 'archive' table for traditionally-deleted revisions that have an |
| 41 | * ar_rev_id saved. |
| 42 | * |
| 43 | * See RevDelRevisionItem and RevDelArchivedRevisionItem for items. |
| 44 | */ |
| 45 | class RevDelRevisionList extends RevDelList { |
| 46 | |
| 47 | /** @var LBFactory */ |
| 48 | private $lbFactory; |
| 49 | |
| 50 | /** @var HookRunner */ |
| 51 | private $hookRunner; |
| 52 | |
| 53 | /** @var HTMLCacheUpdater */ |
| 54 | private $htmlCacheUpdater; |
| 55 | |
| 56 | /** @var RevisionStore */ |
| 57 | private $revisionStore; |
| 58 | |
| 59 | /** @var int */ |
| 60 | public $currentRevId; |
| 61 | |
| 62 | /** |
| 63 | * @param IContextSource $context |
| 64 | * @param PageIdentity $page |
| 65 | * @param array $ids |
| 66 | * @param LBFactory $lbFactory |
| 67 | * @param HookContainer $hookContainer |
| 68 | * @param HTMLCacheUpdater $htmlCacheUpdater |
| 69 | * @param RevisionStore $revisionStore |
| 70 | */ |
| 71 | public function __construct( |
| 72 | IContextSource $context, |
| 73 | PageIdentity $page, |
| 74 | array $ids, |
| 75 | LBFactory $lbFactory, |
| 76 | HookContainer $hookContainer, |
| 77 | HTMLCacheUpdater $htmlCacheUpdater, |
| 78 | RevisionStore $revisionStore |
| 79 | ) { |
| 80 | parent::__construct( $context, $page, $ids, $lbFactory ); |
| 81 | $this->lbFactory = $lbFactory; |
| 82 | $this->hookRunner = new HookRunner( $hookContainer ); |
| 83 | $this->htmlCacheUpdater = $htmlCacheUpdater; |
| 84 | $this->revisionStore = $revisionStore; |
| 85 | } |
| 86 | |
| 87 | public function getType() { |
| 88 | return 'revision'; |
| 89 | } |
| 90 | |
| 91 | public static function getRelationType() { |
| 92 | return 'rev_id'; |
| 93 | } |
| 94 | |
| 95 | public static function getRestriction() { |
| 96 | return 'deleterevision'; |
| 97 | } |
| 98 | |
| 99 | public static function getRevdelConstant() { |
| 100 | return RevisionRecord::DELETED_TEXT; |
| 101 | } |
| 102 | |
| 103 | public static function suggestTarget( $target, array $ids ) { |
| 104 | $revisionRecord = MediaWikiServices::getInstance() |
| 105 | ->getRevisionLookup() |
| 106 | ->getRevisionById( $ids[0] ); |
| 107 | |
| 108 | if ( $revisionRecord ) { |
| 109 | return Title::newFromLinkTarget( $revisionRecord->getPageAsLinkTarget() ); |
| 110 | } |
| 111 | return $target; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * @param \Wikimedia\Rdbms\IReadableDatabase $db |
| 116 | * @return IResultWrapper |
| 117 | */ |
| 118 | public function doQuery( $db ) { |
| 119 | $ids = array_map( 'intval', $this->ids ); |
| 120 | $queryBuilder = $this->revisionStore->newSelectQueryBuilder( $db ) |
| 121 | ->joinComment() |
| 122 | ->joinUser() |
| 123 | ->joinPage() |
| 124 | ->where( [ 'rev_page' => $this->page->getId(), 'rev_id' => $ids ] ) |
| 125 | ->orderBy( 'rev_id', \Wikimedia\Rdbms\SelectQueryBuilder::SORT_DESC ) |
| 126 | // workaround for MySQL bug (T104313) |
| 127 | ->useIndex( [ 'revision' => 'PRIMARY' ] ); |
| 128 | |
| 129 | MediaWikiServices::getInstance()->getChangeTagsStore()->modifyDisplayQueryBuilder( $queryBuilder, 'revision' ); |
| 130 | |
| 131 | $live = $queryBuilder->caller( __METHOD__ )->fetchResultSet(); |
| 132 | if ( $live->numRows() >= count( $ids ) ) { |
| 133 | // All requested revisions are live, keeps things simple! |
| 134 | return $live; |
| 135 | } |
| 136 | |
| 137 | $queryBuilder = $this->revisionStore->newArchiveSelectQueryBuilder( $db ) |
| 138 | ->joinComment() |
| 139 | ->where( [ 'ar_rev_id' => $ids ] ) |
| 140 | ->orderBy( 'ar_rev_id', \Wikimedia\Rdbms\SelectQueryBuilder::SORT_DESC ); |
| 141 | |
| 142 | MediaWikiServices::getInstance()->getChangeTagsStore()->modifyDisplayQueryBuilder( $queryBuilder, 'archive' ); |
| 143 | |
| 144 | // Check if any requested revisions are available fully deleted. |
| 145 | $archived = $queryBuilder->caller( __METHOD__ )->fetchResultSet(); |
| 146 | |
| 147 | if ( $archived->numRows() == 0 ) { |
| 148 | return $live; |
| 149 | } elseif ( $live->numRows() == 0 ) { |
| 150 | return $archived; |
| 151 | } else { |
| 152 | // Combine the two! Whee |
| 153 | $rows = []; |
| 154 | foreach ( $live as $row ) { |
| 155 | $rows[$row->rev_id] = $row; |
| 156 | } |
| 157 | foreach ( $archived as $row ) { |
| 158 | $rows[$row->ar_rev_id] = $row; |
| 159 | } |
| 160 | krsort( $rows ); |
| 161 | return new FakeResultWrapper( array_values( $rows ) ); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | public function newItem( $row ) { |
| 166 | if ( isset( $row->rev_id ) ) { |
| 167 | return new RevDelRevisionItem( $this, $row ); |
| 168 | } elseif ( isset( $row->ar_rev_id ) ) { |
| 169 | return new RevDelArchivedRevisionItem( $this, $row, $this->lbFactory ); |
| 170 | } else { |
| 171 | // This shouldn't happen. :) |
| 172 | throw new InvalidArgumentException( 'Invalid row type in RevDelRevisionList' ); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | public function getCurrent() { |
| 177 | if ( $this->currentRevId === null ) { |
| 178 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 179 | $this->currentRevId = $dbw->newSelectQueryBuilder() |
| 180 | ->select( 'page_latest' ) |
| 181 | ->from( 'page' ) |
| 182 | ->where( [ 'page_namespace' => $this->page->getNamespace(), 'page_title' => $this->page->getDBkey() ] ) |
| 183 | ->caller( __METHOD__ )->fetchField(); |
| 184 | } |
| 185 | return $this->currentRevId; |
| 186 | } |
| 187 | |
| 188 | public function doPreCommitUpdates() { |
| 189 | Title::newFromPageIdentity( $this->page )->invalidateCache(); |
| 190 | return Status::newGood(); |
| 191 | } |
| 192 | |
| 193 | public function doPostCommitUpdates( array $visibilityChangeMap ) { |
| 194 | $this->htmlCacheUpdater->purgeTitleUrls( |
| 195 | $this->page, |
| 196 | HTMLCacheUpdater::PURGE_INTENT_TXROUND_REFLECTED |
| 197 | ); |
| 198 | // Extensions that require referencing previous revisions may need this |
| 199 | $this->hookRunner->onArticleRevisionVisibilitySet( |
| 200 | Title::newFromPageIdentity( $this->page ), |
| 201 | $this->ids, |
| 202 | $visibilityChangeMap |
| 203 | ); |
| 204 | |
| 205 | return Status::newGood(); |
| 206 | } |
| 207 | } |