RevisionStoreCacheRecord.php

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<?php
namespace MediaWiki\Revision;
 
use MediaWiki\CommentStore\CommentStoreComment;
use MediaWiki\Page\PageIdentity;
use MediaWiki\Permissions\Authority;
use MediaWiki\User\UserIdentity;
 
class RevisionStoreCacheRecord extends RevisionStoreRecord {
 
    private $mCallback;
 
    public function __construct(
        callable $callback,
        PageIdentity $page,
        UserIdentity $user,
        CommentStoreComment $comment,
        $row,
        RevisionSlots $slots,
        $wikiID = self::LOCAL
    ) {
        parent::__construct( $page, $user, $comment, $row, $slots, $wikiID );
        $this->mCallback = $callback;
    }
 
    public function getVisibility() {
        if ( $this->mCallback ) {
            $this->loadFreshRow();
        }
        return parent::getVisibility();
    }
 
    public function getUser( $audience = self::FOR_PUBLIC, Authority $performer = null ) {
        if ( $this->mCallback ) {
            $this->loadFreshRow();
        }
        return parent::getUser( $audience, $performer );
    }
 
    private function loadFreshRow() {
        [ $freshRevDeleted, $freshUser ] = call_user_func( $this->mCallback, $this->mId );
 
        // Set to null to ensure we do not make unnecessary queries for subsequent getter calls,
        // and to allow the closure to be freed.
        $this->mCallback = null;
 
        if ( $freshRevDeleted !== null && $freshUser !== null ) {
            $this->mDeleted = intval( $freshRevDeleted );
            $this->mUser = $freshUser;
        } else {
            throw new RevisionAccessException(
                'Unable to load fresh row for rev_id: {rev_id}',
                [ 'rev_id' => $this->mId ]
            );
        }
    }
 
}