RevisionStoreCacheRecord.php

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<?php
namespace MediaWiki\Revision;
 
use MediaWiki\User\UserIdentity;
use MediaWiki\User\UserIdentityValue;
use CommentStoreComment;
use InvalidArgumentException;
use Title;
use User;
 
class RevisionStoreCacheRecord extends RevisionStoreRecord {
 
    private $mCallback;
 
    function __construct(
        $callback,
        Title $title,
        UserIdentity $user,
        CommentStoreComment $comment,
        $row,
        RevisionSlots $slots,
        $dbDomain = false
    ) {
        parent::__construct( $title, $user, $comment, $row, $slots, $dbDomain );
        $this->mCallback = $callback;
    }
 
    public function getVisibility() {
        if ( $this->mCallback ) {
            $this->loadFreshRow();
        }
        return parent::getVisibility();
    }
 
    public function getUser( $audience = self::FOR_PUBLIC, User $user = null ) {
        if ( $this->mCallback ) {
            $this->loadFreshRow();
        }
        return parent::getUser( $audience, $user );
    }
 
    private function loadFreshRow() {
        $freshRow = 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 ( $freshRow ) {
            $this->mDeleted = intval( $freshRow->rev_deleted );
 
            try {
                $this->mUser = User::newFromAnyId(
                    $freshRow->rev_user ?? null,
                    $freshRow->rev_user_text ?? null,
                    $freshRow->rev_actor ?? null
                );
            } catch ( InvalidArgumentException $ex ) {
                wfWarn(
                    __METHOD__
                    . ': '
                    . $this->mTitle->getPrefixedDBkey()
                    . ': '
                    . $ex->getMessage()
                );
                $this->mUser = new UserIdentityValue( 0, 'Unknown user', 0 );
            }
        } else {
            throw new RevisionAccessException(
                'Unable to load fresh row for rev_id: ' . $this->mId
            );
        }
    }
 
}